./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:28:29,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:28:29,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:28:29,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:28:29,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:28:29,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:28:29,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:28:29,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:28:29,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:28:29,525 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:28:29,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:28:29,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:28:29,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:28:29,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:28:29,528 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:28:29,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:28:29,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:28:29,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:28:29,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:28:29,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:28:29,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:28:29,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:28:29,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:28:29,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:28:29,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:28:29,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:28:29,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:28:29,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:28:29,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:28:29,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:28:29,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:28:29,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:28:29,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:28:29,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:28:29,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:28:29,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:28:29,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:28:29,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:28:29,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:28:29,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:28:29,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:28:29,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:28:29,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:28:29,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:28:29,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:28:29,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:28:29,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:28:29,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:28:29,771 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:28:29,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:28:30,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:28:31,187 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:28:31,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:28:31,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af7de334/6df6770a8b88437b98408ff613a6cda7/FLAG164b29ca1 [2024-06-28 03:28:31,223 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af7de334/6df6770a8b88437b98408ff613a6cda7 [2024-06-28 03:28:31,226 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:28:31,226 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:28:31,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 03:28:31,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:28:31,391 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:28:31,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:28:31,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:28:31,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:28:31,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:28:31" (1/2) ... [2024-06-28 03:28:31,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23532c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:28:31, skipping insertion in model container [2024-06-28 03:28:31,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:28:31" (1/2) ... [2024-06-28 03:28:31,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5801f0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:28:31, skipping insertion in model container [2024-06-28 03:28:31,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:28:31" (2/2) ... [2024-06-28 03:28:31,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23532c2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:31, skipping insertion in model container [2024-06-28 03:28:31,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:28:31" (2/2) ... [2024-06-28 03:28:31,405 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:28:31,476 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:28:31,478 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:28:31,478 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:28:31,478 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:28:31,479 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-28 03:28:31,526 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:28:31,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:28:31,927 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:28:32,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:28:32,117 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:28:32,117 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32 WrapperNode [2024-06-28 03:28:32,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:28:32,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:28:32,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:28:32,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:28:32,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,169 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-28 03:28:32,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:28:32,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:28:32,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:28:32,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:28:32,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,199 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:28:32,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:28:32,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:28:32,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:28:32,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:28:32,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (1/1) ... [2024-06-28 03:28:32,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:28:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:28:32,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:28:32,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:28:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:28:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:28:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:28:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:28:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:28:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:28:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:28:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:28:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:28:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:28:32,295 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:28:32,452 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:28:32,454 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:28:32,779 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:28:32,779 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:28:32,983 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:28:32,983 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:28:32,985 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:28:32 BoogieIcfgContainer [2024-06-28 03:28:32,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:28:32,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:28:32,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:28:32,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:28:32,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:28:31" (1/4) ... [2024-06-28 03:28:32,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3076aff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:28:32, skipping insertion in model container [2024-06-28 03:28:32,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:28:31" (2/4) ... [2024-06-28 03:28:32,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3076aff0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:28:32, skipping insertion in model container [2024-06-28 03:28:32,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:28:32" (3/4) ... [2024-06-28 03:28:32,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3076aff0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:28:32, skipping insertion in model container [2024-06-28 03:28:32,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:28:32" (4/4) ... [2024-06-28 03:28:33,000 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:28:33,016 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:28:33,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:28:33,017 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:28:33,056 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:28:33,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:28:33,129 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 03:28:33,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:28:33,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:28:33,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:28:33,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 03:28:33,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:28:33,160 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;@3212b66b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:28:33,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:28:33,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:28:33,167 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:28:33,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:28:33,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:33,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:28:33,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:33,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-28 03:28:33,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:33,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232917071] [2024-06-28 03:28:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:34,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232917071] [2024-06-28 03:28:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232917071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:34,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:34,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:28:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992607802] [2024-06-28 03:28:34,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:28:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:28:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:28:34,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:28:34,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:34,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:34,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:28:34,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:34,259 INFO L124 PetriNetUnfolderBase]: 162/320 cut-off events. [2024-06-28 03:28:34,260 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:28:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 320 events. 162/320 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1209 event pairs, 97 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 620. Up to 288 conditions per place. [2024-06-28 03:28:34,265 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:28:34,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-28 03:28:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:28:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:28:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-28 03:28:34,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-28 03:28:34,278 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-28 03:28:34,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-28 03:28:34,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:28:34,282 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 03:28:34,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 03:28:34,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 03:28:34,287 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 03:28:34,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:34,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:34,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:28:34,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:34,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-28 03:28:34,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:34,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641745700] [2024-06-28 03:28:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:34,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:34,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641745700] [2024-06-28 03:28:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641745700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:34,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:28:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40312213] [2024-06-28 03:28:34,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:34,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:28:34,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:28:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:28:35,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 03:28:35,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:35,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:35,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 03:28:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:35,132 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-28 03:28:35,133 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-28 03:28:35,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1262 event pairs, 94 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-28 03:28:35,136 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 03:28:35,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 03:28:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:28:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:28:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-28 03:28:35,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-28 03:28:35,138 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-28 03:28:35,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 03:28:35,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:28:35,140 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 03:28:35,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 03:28:35,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 03:28:35,142 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 03:28:35,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:35,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:35,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:35,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:28:35,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:35,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-28 03:28:35,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:35,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460410489] [2024-06-28 03:28:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:35,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:35,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460410489] [2024-06-28 03:28:35,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460410489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:35,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:35,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:28:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631135061] [2024-06-28 03:28:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:28:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:28:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:28:35,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 03:28:35,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:35,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:35,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 03:28:35,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:35,905 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-28 03:28:35,906 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-28 03:28:35,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1230 event pairs, 52 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-28 03:28:35,910 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 03:28:35,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-28 03:28:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:28:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:28:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-28 03:28:35,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-28 03:28:35,914 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-28 03:28:35,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-28 03:28:35,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:28:35,916 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 03:28:35,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 03:28:35,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 03:28:35,918 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 03:28:35,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:35,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:35,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:28:35,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:35,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-28 03:28:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:35,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218744204] [2024-06-28 03:28:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:35,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:37,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:37,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218744204] [2024-06-28 03:28:37,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218744204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:37,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:37,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:28:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527321245] [2024-06-28 03:28:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:28:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:28:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:28:37,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 03:28:37,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:37,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:37,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 03:28:37,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:37,401 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-28 03:28:37,401 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-06-28 03:28:37,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1159 event pairs, 30 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-28 03:28:37,404 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 03:28:37,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-28 03:28:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:28:37,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:28:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:28:37,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-28 03:28:37,409 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:28:37,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-28 03:28:37,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:37,412 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-28 03:28:37,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-28 03:28:37,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 03:28:37,413 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-28 03:28:37,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:37,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:37,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:37,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:28:37,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:37,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-28 03:28:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:37,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254383998] [2024-06-28 03:28:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:37,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:38,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254383998] [2024-06-28 03:28:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254383998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:38,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:38,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:28:38,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39347665] [2024-06-28 03:28:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:38,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:28:38,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:38,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:28:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:28:38,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:28:38,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:38,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:38,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:28:38,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:38,217 INFO L124 PetriNetUnfolderBase]: 147/297 cut-off events. [2024-06-28 03:28:38,217 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-28 03:28:38,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 297 events. 147/297 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1091 event pairs, 90 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 807. Up to 259 conditions per place. [2024-06-28 03:28:38,220 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-28 03:28:38,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 206 flow [2024-06-28 03:28:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:28:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:28:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 03:28:38,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:28:38,221 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 6 states and 71 transitions. [2024-06-28 03:28:38,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 206 flow [2024-06-28 03:28:38,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 184 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:38,224 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 140 flow [2024-06-28 03:28:38,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-28 03:28:38,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-28 03:28:38,225 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 140 flow [2024-06-28 03:28:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:38,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:38,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:28:38,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:38,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash 29843198, now seen corresponding path program 1 times [2024-06-28 03:28:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442782906] [2024-06-28 03:28:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:38,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:38,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442782906] [2024-06-28 03:28:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442782906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:38,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:28:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235377954] [2024-06-28 03:28:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:28:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:28:38,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:28:38,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:38,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:38,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:38,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:38,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:39,041 INFO L124 PetriNetUnfolderBase]: 172/332 cut-off events. [2024-06-28 03:28:39,041 INFO L125 PetriNetUnfolderBase]: For 605/605 co-relation queries the response was YES. [2024-06-28 03:28:39,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 332 events. 172/332 cut-off events. For 605/605 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1200 event pairs, 106 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 965. Up to 298 conditions per place. [2024-06-28 03:28:39,044 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2024-06-28 03:28:39,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 232 flow [2024-06-28 03:28:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:28:39,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:28:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-28 03:28:39,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:28:39,046 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 140 flow. Second operand 6 states and 68 transitions. [2024-06-28 03:28:39,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 232 flow [2024-06-28 03:28:39,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 219 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:39,048 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 162 flow [2024-06-28 03:28:39,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-28 03:28:39,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 03:28:39,050 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 162 flow [2024-06-28 03:28:39,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:39,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:39,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:28:39,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:39,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash -940589495, now seen corresponding path program 1 times [2024-06-28 03:28:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021956765] [2024-06-28 03:28:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:39,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:39,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021956765] [2024-06-28 03:28:39,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021956765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:39,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:39,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:28:39,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620961562] [2024-06-28 03:28:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:39,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:28:39,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:28:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:28:39,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:39,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:39,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:39,843 INFO L124 PetriNetUnfolderBase]: 192/359 cut-off events. [2024-06-28 03:28:39,844 INFO L125 PetriNetUnfolderBase]: For 980/980 co-relation queries the response was YES. [2024-06-28 03:28:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 359 events. 192/359 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1283 event pairs, 104 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1148. Up to 316 conditions per place. [2024-06-28 03:28:39,847 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 32 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2024-06-28 03:28:39,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 296 flow [2024-06-28 03:28:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 03:28:39,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 03:28:39,848 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 162 flow. Second operand 7 states and 81 transitions. [2024-06-28 03:28:39,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 296 flow [2024-06-28 03:28:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 277 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:39,851 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 205 flow [2024-06-28 03:28:39,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-28 03:28:39,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-28 03:28:39,852 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 205 flow [2024-06-28 03:28:39,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:39,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:39,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:39,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:28:39,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:39,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash 703280241, now seen corresponding path program 2 times [2024-06-28 03:28:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:39,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484592454] [2024-06-28 03:28:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484592454] [2024-06-28 03:28:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484592454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:40,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:40,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:28:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854322708] [2024-06-28 03:28:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:40,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:28:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:28:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:28:40,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:40,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:40,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:40,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:40,668 INFO L124 PetriNetUnfolderBase]: 195/364 cut-off events. [2024-06-28 03:28:40,668 INFO L125 PetriNetUnfolderBase]: For 1308/1308 co-relation queries the response was YES. [2024-06-28 03:28:40,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 364 events. 195/364 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1296 event pairs, 104 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1263. Up to 318 conditions per place. [2024-06-28 03:28:40,671 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-28 03:28:40,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 323 flow [2024-06-28 03:28:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:28:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:28:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 03:28:40,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:28:40,673 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 205 flow. Second operand 6 states and 71 transitions. [2024-06-28 03:28:40,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 323 flow [2024-06-28 03:28:40,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 298 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:40,676 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 230 flow [2024-06-28 03:28:40,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-28 03:28:40,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-28 03:28:40,684 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 230 flow [2024-06-28 03:28:40,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:40,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:40,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:40,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:28:40,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:40,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 697923441, now seen corresponding path program 3 times [2024-06-28 03:28:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368460234] [2024-06-28 03:28:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:40,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368460234] [2024-06-28 03:28:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368460234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:41,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:28:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212344739] [2024-06-28 03:28:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:41,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:28:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:28:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:28:41,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:41,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:41,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:41,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:41,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:41,559 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2024-06-28 03:28:41,560 INFO L125 PetriNetUnfolderBase]: For 1657/1657 co-relation queries the response was YES. [2024-06-28 03:28:41,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 361 events. 193/361 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1293 event pairs, 107 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1326. Up to 309 conditions per place. [2024-06-28 03:28:41,563 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 27 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2024-06-28 03:28:41,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 357 flow [2024-06-28 03:28:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:28:41,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:28:41,565 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 230 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:28:41,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 357 flow [2024-06-28 03:28:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 321 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:41,569 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 264 flow [2024-06-28 03:28:41,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-06-28 03:28:41,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 03:28:41,570 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 264 flow [2024-06-28 03:28:41,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:41,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:41,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:41,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:28:41,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:41,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-28 03:28:41,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395617524] [2024-06-28 03:28:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:41,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395617524] [2024-06-28 03:28:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395617524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070643705] [2024-06-28 03:28:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:42,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:42,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:42,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:42,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:42,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:42,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:42,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:42,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:42,477 INFO L124 PetriNetUnfolderBase]: 178/338 cut-off events. [2024-06-28 03:28:42,477 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2024-06-28 03:28:42,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 338 events. 178/338 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1201 event pairs, 101 based on Foata normal form. 1/339 useless extension candidates. Maximal degree in co-relation 1219. Up to 306 conditions per place. [2024-06-28 03:28:42,480 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-28 03:28:42,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 386 flow [2024-06-28 03:28:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:28:42,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:28:42,482 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 264 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:28:42,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 386 flow [2024-06-28 03:28:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 356 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:42,487 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 275 flow [2024-06-28 03:28:42,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=275, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-06-28 03:28:42,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-28 03:28:42,490 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 275 flow [2024-06-28 03:28:42,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:42,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:42,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:28:42,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:42,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1399700031, now seen corresponding path program 1 times [2024-06-28 03:28:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193051399] [2024-06-28 03:28:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193051399] [2024-06-28 03:28:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193051399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:43,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:43,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:43,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546472917] [2024-06-28 03:28:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:43,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:43,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:43,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:43,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:43,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:43,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:43,370 INFO L124 PetriNetUnfolderBase]: 198/369 cut-off events. [2024-06-28 03:28:43,371 INFO L125 PetriNetUnfolderBase]: For 1960/1961 co-relation queries the response was YES. [2024-06-28 03:28:43,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 369 events. 198/369 cut-off events. For 1960/1961 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1333 event pairs, 53 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 1396. Up to 299 conditions per place. [2024-06-28 03:28:43,373 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2024-06-28 03:28:43,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 471 flow [2024-06-28 03:28:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:28:43,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:28:43,376 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 275 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:28:43,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 471 flow [2024-06-28 03:28:43,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 446 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:43,380 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 342 flow [2024-06-28 03:28:43,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-28 03:28:43,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-28 03:28:43,381 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 342 flow [2024-06-28 03:28:43,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:43,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:43,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:43,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:28:43,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:43,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash 898968699, now seen corresponding path program 2 times [2024-06-28 03:28:43,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:43,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79984848] [2024-06-28 03:28:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79984848] [2024-06-28 03:28:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79984848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:43,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:43,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491785505] [2024-06-28 03:28:43,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:43,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:44,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:44,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:44,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:44,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:44,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:44,252 INFO L124 PetriNetUnfolderBase]: 213/395 cut-off events. [2024-06-28 03:28:44,253 INFO L125 PetriNetUnfolderBase]: For 2465/2465 co-relation queries the response was YES. [2024-06-28 03:28:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 395 events. 213/395 cut-off events. For 2465/2465 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1450 event pairs, 50 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 1647. Up to 317 conditions per place. [2024-06-28 03:28:44,256 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 47 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2024-06-28 03:28:44,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 564 flow [2024-06-28 03:28:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:28:44,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:28:44,258 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 342 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:28:44,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 564 flow [2024-06-28 03:28:44,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 534 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:44,263 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 429 flow [2024-06-28 03:28:44,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=429, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-28 03:28:44,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-28 03:28:44,264 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 429 flow [2024-06-28 03:28:44,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:44,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:44,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:44,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:28:44,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:44,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 358607501, now seen corresponding path program 1 times [2024-06-28 03:28:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:44,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639241707] [2024-06-28 03:28:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:44,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639241707] [2024-06-28 03:28:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639241707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964392678] [2024-06-28 03:28:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:44,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:44,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:44,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:44,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:44,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:44,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:44,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:45,122 INFO L124 PetriNetUnfolderBase]: 230/416 cut-off events. [2024-06-28 03:28:45,123 INFO L125 PetriNetUnfolderBase]: For 2978/2978 co-relation queries the response was YES. [2024-06-28 03:28:45,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 416 events. 230/416 cut-off events. For 2978/2978 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1507 event pairs, 82 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1828. Up to 386 conditions per place. [2024-06-28 03:28:45,126 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-06-28 03:28:45,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 607 flow [2024-06-28 03:28:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 03:28:45,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-28 03:28:45,128 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 429 flow. Second operand 8 states and 83 transitions. [2024-06-28 03:28:45,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 607 flow [2024-06-28 03:28:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 573 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:45,134 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 446 flow [2024-06-28 03:28:45,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-28 03:28:45,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 03:28:45,135 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 446 flow [2024-06-28 03:28:45,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:45,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:45,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:28:45,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:45,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash 906238509, now seen corresponding path program 3 times [2024-06-28 03:28:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638214612] [2024-06-28 03:28:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:45,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:45,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638214612] [2024-06-28 03:28:45,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638214612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:45,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:45,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134656917] [2024-06-28 03:28:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:45,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:45,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:45,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:45,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:45,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:46,023 INFO L124 PetriNetUnfolderBase]: 229/420 cut-off events. [2024-06-28 03:28:46,023 INFO L125 PetriNetUnfolderBase]: For 3644/3644 co-relation queries the response was YES. [2024-06-28 03:28:46,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 420 events. 229/420 cut-off events. For 3644/3644 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1547 event pairs, 50 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1926. Up to 321 conditions per place. [2024-06-28 03:28:46,027 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 27 changer transitions 0/79 dead transitions. [2024-06-28 03:28:46,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 698 flow [2024-06-28 03:28:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 03:28:46,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 03:28:46,028 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 446 flow. Second operand 8 states and 98 transitions. [2024-06-28 03:28:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 698 flow [2024-06-28 03:28:46,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 663 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:46,036 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 514 flow [2024-06-28 03:28:46,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-06-28 03:28:46,037 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:28:46,037 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 514 flow [2024-06-28 03:28:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:46,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:46,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:46,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:28:46,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:46,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 10610739, now seen corresponding path program 4 times [2024-06-28 03:28:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39742529] [2024-06-28 03:28:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:46,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:46,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:46,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39742529] [2024-06-28 03:28:46,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39742529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:46,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:46,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916639024] [2024-06-28 03:28:46,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:46,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:46,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:46,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:46,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:46,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:46,935 INFO L124 PetriNetUnfolderBase]: 236/431 cut-off events. [2024-06-28 03:28:46,936 INFO L125 PetriNetUnfolderBase]: For 4409/4410 co-relation queries the response was YES. [2024-06-28 03:28:46,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 431 events. 236/431 cut-off events. For 4409/4410 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1621 event pairs, 53 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2097. Up to 340 conditions per place. [2024-06-28 03:28:46,940 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-28 03:28:46,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 718 flow [2024-06-28 03:28:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 03:28:46,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-28 03:28:46,942 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 514 flow. Second operand 7 states and 85 transitions. [2024-06-28 03:28:46,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 718 flow [2024-06-28 03:28:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 679 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:46,949 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 566 flow [2024-06-28 03:28:46,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=566, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-28 03:28:46,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-28 03:28:46,949 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 566 flow [2024-06-28 03:28:46,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:46,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:46,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:46,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:28:46,950 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:46,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 10615575, now seen corresponding path program 2 times [2024-06-28 03:28:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:46,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434701061] [2024-06-28 03:28:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:46,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:47,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:47,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434701061] [2024-06-28 03:28:47,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434701061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:47,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:47,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:47,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440357610] [2024-06-28 03:28:47,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:47,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:47,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:47,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:47,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 566 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:47,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:47,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:47,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:47,723 INFO L124 PetriNetUnfolderBase]: 250/449 cut-off events. [2024-06-28 03:28:47,723 INFO L125 PetriNetUnfolderBase]: For 4867/4867 co-relation queries the response was YES. [2024-06-28 03:28:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 449 events. 250/449 cut-off events. For 4867/4867 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1662 event pairs, 82 based on Foata normal form. 1/450 useless extension candidates. Maximal degree in co-relation 2283. Up to 413 conditions per place. [2024-06-28 03:28:47,727 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 58 selfloop transitions, 18 changer transitions 0/78 dead transitions. [2024-06-28 03:28:47,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 754 flow [2024-06-28 03:28:47,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:28:47,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-28 03:28:47,729 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 566 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:28:47,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 754 flow [2024-06-28 03:28:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 703 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:47,736 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 579 flow [2024-06-28 03:28:47,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-06-28 03:28:47,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 03:28:47,737 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 579 flow [2024-06-28 03:28:47,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:47,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:47,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:47,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:28:47,738 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:47,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash 156149813, now seen corresponding path program 5 times [2024-06-28 03:28:47,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:47,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886982324] [2024-06-28 03:28:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:47,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886982324] [2024-06-28 03:28:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886982324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:48,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773650835] [2024-06-28 03:28:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:48,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:48,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:48,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:48,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:48,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:48,614 INFO L124 PetriNetUnfolderBase]: 249/453 cut-off events. [2024-06-28 03:28:48,614 INFO L125 PetriNetUnfolderBase]: For 5782/5782 co-relation queries the response was YES. [2024-06-28 03:28:48,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 453 events. 249/453 cut-off events. For 5782/5782 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1698 event pairs, 51 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2391. Up to 333 conditions per place. [2024-06-28 03:28:48,618 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 32 changer transitions 0/85 dead transitions. [2024-06-28 03:28:48,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 857 flow [2024-06-28 03:28:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 03:28:48,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-28 03:28:48,620 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 579 flow. Second operand 7 states and 86 transitions. [2024-06-28 03:28:48,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 857 flow [2024-06-28 03:28:48,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 811 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:48,627 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 667 flow [2024-06-28 03:28:48,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-28 03:28:48,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-28 03:28:48,628 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 667 flow [2024-06-28 03:28:48,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:48,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:48,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:48,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:28:48,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:48,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:48,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1385419683, now seen corresponding path program 3 times [2024-06-28 03:28:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:48,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764580676] [2024-06-28 03:28:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:48,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:49,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:49,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764580676] [2024-06-28 03:28:49,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764580676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:49,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160690861] [2024-06-28 03:28:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:49,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:49,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:49,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 667 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:49,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:49,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:49,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:49,408 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-28 03:28:49,408 INFO L125 PetriNetUnfolderBase]: For 5998/5998 co-relation queries the response was YES. [2024-06-28 03:28:49,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 472 events. 264/472 cut-off events. For 5998/5998 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1759 event pairs, 86 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2526. Up to 420 conditions per place. [2024-06-28 03:28:49,413 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 58 selfloop transitions, 25 changer transitions 0/85 dead transitions. [2024-06-28 03:28:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 911 flow [2024-06-28 03:28:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 03:28:49,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-28 03:28:49,415 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 667 flow. Second operand 7 states and 75 transitions. [2024-06-28 03:28:49,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 911 flow [2024-06-28 03:28:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 863 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:49,424 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 712 flow [2024-06-28 03:28:49,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-28 03:28:49,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 03:28:49,425 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 712 flow [2024-06-28 03:28:49,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:49,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:49,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:28:49,426 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:49,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1385656833, now seen corresponding path program 4 times [2024-06-28 03:28:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889206884] [2024-06-28 03:28:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889206884] [2024-06-28 03:28:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889206884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166156023] [2024-06-28 03:28:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:50,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:50,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 712 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:50,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:50,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:50,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:50,185 INFO L124 PetriNetUnfolderBase]: 262/469 cut-off events. [2024-06-28 03:28:50,185 INFO L125 PetriNetUnfolderBase]: For 5626/5626 co-relation queries the response was YES. [2024-06-28 03:28:50,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2542 conditions, 469 events. 262/469 cut-off events. For 5626/5626 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 86 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2502. Up to 418 conditions per place. [2024-06-28 03:28:50,189 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 23 changer transitions 0/84 dead transitions. [2024-06-28 03:28:50,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 84 transitions, 890 flow [2024-06-28 03:28:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 03:28:50,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-28 03:28:50,191 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 712 flow. Second operand 7 states and 75 transitions. [2024-06-28 03:28:50,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 84 transitions, 890 flow [2024-06-28 03:28:50,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 853 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:28:50,201 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 726 flow [2024-06-28 03:28:50,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=726, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-28 03:28:50,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-28 03:28:50,202 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 726 flow [2024-06-28 03:28:50,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:50,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:50,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:50,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:28:50,203 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:50,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1385657019, now seen corresponding path program 6 times [2024-06-28 03:28:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:50,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019439543] [2024-06-28 03:28:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:50,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019439543] [2024-06-28 03:28:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019439543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:50,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:50,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:28:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554824480] [2024-06-28 03:28:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:28:50,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:28:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:28:50,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:50,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:50,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:50,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:50,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:51,084 INFO L124 PetriNetUnfolderBase]: 245/448 cut-off events. [2024-06-28 03:28:51,084 INFO L125 PetriNetUnfolderBase]: For 6073/6073 co-relation queries the response was YES. [2024-06-28 03:28:51,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 448 events. 245/448 cut-off events. For 6073/6073 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1715 event pairs, 54 based on Foata normal form. 2/450 useless extension candidates. Maximal degree in co-relation 2430. Up to 315 conditions per place. [2024-06-28 03:28:51,089 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 34 changer transitions 0/89 dead transitions. [2024-06-28 03:28:51,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 976 flow [2024-06-28 03:28:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:28:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:28:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 03:28:51,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-28 03:28:51,090 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 726 flow. Second operand 7 states and 85 transitions. [2024-06-28 03:28:51,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 976 flow [2024-06-28 03:28:51,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 915 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:51,100 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 770 flow [2024-06-28 03:28:51,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=770, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-28 03:28:51,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 03:28:51,100 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 770 flow [2024-06-28 03:28:51,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:51,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:51,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:28:51,101 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:51,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash -321818368, now seen corresponding path program 1 times [2024-06-28 03:28:51,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:51,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377189887] [2024-06-28 03:28:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377189887] [2024-06-28 03:28:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377189887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:51,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84698559] [2024-06-28 03:28:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:51,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:51,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 770 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:51,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:51,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:51,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:52,226 INFO L124 PetriNetUnfolderBase]: 255/465 cut-off events. [2024-06-28 03:28:52,226 INFO L125 PetriNetUnfolderBase]: For 7123/7125 co-relation queries the response was YES. [2024-06-28 03:28:52,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 465 events. 255/465 cut-off events. For 7123/7125 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1801 event pairs, 70 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2642. Up to 377 conditions per place. [2024-06-28 03:28:52,231 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-06-28 03:28:52,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 1040 flow [2024-06-28 03:28:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:28:52,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:28:52,232 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 770 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:28:52,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 1040 flow [2024-06-28 03:28:52,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 943 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:52,247 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 789 flow [2024-06-28 03:28:52,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=789, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-28 03:28:52,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 03:28:52,248 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 789 flow [2024-06-28 03:28:52,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:52,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:52,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:52,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:28:52,248 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:52,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 441038739, now seen corresponding path program 1 times [2024-06-28 03:28:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:52,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421495439] [2024-06-28 03:28:52,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:52,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421495439] [2024-06-28 03:28:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421495439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124345408] [2024-06-28 03:28:52,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:52,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:52,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:52,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 789 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:52,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:52,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:52,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:53,147 INFO L124 PetriNetUnfolderBase]: 271/483 cut-off events. [2024-06-28 03:28:53,147 INFO L125 PetriNetUnfolderBase]: For 7290/7290 co-relation queries the response was YES. [2024-06-28 03:28:53,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 483 events. 271/483 cut-off events. For 7290/7290 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1825 event pairs, 55 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2693. Up to 412 conditions per place. [2024-06-28 03:28:53,151 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 27 changer transitions 0/101 dead transitions. [2024-06-28 03:28:53,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 1055 flow [2024-06-28 03:28:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:28:53,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:28:53,153 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 789 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:28:53,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 1055 flow [2024-06-28 03:28:53,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 995 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:53,164 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 814 flow [2024-06-28 03:28:53,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=814, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-06-28 03:28:53,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 03:28:53,165 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 814 flow [2024-06-28 03:28:53,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:53,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:53,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:28:53,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:53,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2081539160, now seen corresponding path program 2 times [2024-06-28 03:28:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:53,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477587067] [2024-06-28 03:28:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477587067] [2024-06-28 03:28:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477587067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:54,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:54,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435959244] [2024-06-28 03:28:54,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:54,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:54,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 814 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:54,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:54,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:54,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:54,426 INFO L124 PetriNetUnfolderBase]: 262/473 cut-off events. [2024-06-28 03:28:54,427 INFO L125 PetriNetUnfolderBase]: For 8090/8092 co-relation queries the response was YES. [2024-06-28 03:28:54,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 473 events. 262/473 cut-off events. For 8090/8092 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1827 event pairs, 49 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 2704. Up to 383 conditions per place. [2024-06-28 03:28:54,431 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-28 03:28:54,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 1028 flow [2024-06-28 03:28:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 03:28:54,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 03:28:54,433 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 814 flow. Second operand 8 states and 97 transitions. [2024-06-28 03:28:54,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 1028 flow [2024-06-28 03:28:54,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 953 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:54,445 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 795 flow [2024-06-28 03:28:54,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-28 03:28:54,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-28 03:28:54,446 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 795 flow [2024-06-28 03:28:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:54,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:54,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:28:54,447 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:54,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2098227331, now seen corresponding path program 2 times [2024-06-28 03:28:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:54,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424370369] [2024-06-28 03:28:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:55,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:55,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424370369] [2024-06-28 03:28:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424370369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:55,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:55,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396653318] [2024-06-28 03:28:55,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:55,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:55,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:55,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 795 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:55,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:55,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:55,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:55,388 INFO L124 PetriNetUnfolderBase]: 275/490 cut-off events. [2024-06-28 03:28:55,389 INFO L125 PetriNetUnfolderBase]: For 8641/8641 co-relation queries the response was YES. [2024-06-28 03:28:55,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 490 events. 275/490 cut-off events. For 8641/8641 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1870 event pairs, 53 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2780. Up to 419 conditions per place. [2024-06-28 03:28:55,394 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2024-06-28 03:28:55,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1065 flow [2024-06-28 03:28:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:28:55,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:28:55,396 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 795 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:28:55,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1065 flow [2024-06-28 03:28:55,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 1002 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:55,408 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 817 flow [2024-06-28 03:28:55,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=817, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-06-28 03:28:55,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-28 03:28:55,409 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 817 flow [2024-06-28 03:28:55,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:55,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:55,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:28:55,410 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:55,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2101946401, now seen corresponding path program 3 times [2024-06-28 03:28:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987490191] [2024-06-28 03:28:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:55,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:55,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:55,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987490191] [2024-06-28 03:28:55,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987490191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:55,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:55,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:55,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136059055] [2024-06-28 03:28:55,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:55,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:55,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:56,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:56,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 817 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:56,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:56,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:56,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:56,255 INFO L124 PetriNetUnfolderBase]: 296/524 cut-off events. [2024-06-28 03:28:56,255 INFO L125 PetriNetUnfolderBase]: For 10288/10288 co-relation queries the response was YES. [2024-06-28 03:28:56,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 524 events. 296/524 cut-off events. For 10288/10288 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2032 event pairs, 58 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3113. Up to 398 conditions per place. [2024-06-28 03:28:56,261 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 38 changer transitions 0/110 dead transitions. [2024-06-28 03:28:56,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 110 transitions, 1257 flow [2024-06-28 03:28:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:28:56,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:28:56,263 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 817 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:28:56,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 110 transitions, 1257 flow [2024-06-28 03:28:56,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 1188 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:56,277 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 923 flow [2024-06-28 03:28:56,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=923, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2024-06-28 03:28:56,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 03:28:56,278 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 923 flow [2024-06-28 03:28:56,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:56,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:56,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:56,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:28:56,279 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:56,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1546422848, now seen corresponding path program 1 times [2024-06-28 03:28:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369318956] [2024-06-28 03:28:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:56,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369318956] [2024-06-28 03:28:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369318956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15814301] [2024-06-28 03:28:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:56,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:56,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:56,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 923 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:56,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:56,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:56,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:57,171 INFO L124 PetriNetUnfolderBase]: 299/531 cut-off events. [2024-06-28 03:28:57,171 INFO L125 PetriNetUnfolderBase]: For 11128/11128 co-relation queries the response was YES. [2024-06-28 03:28:57,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 531 events. 299/531 cut-off events. For 11128/11128 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2076 event pairs, 88 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 3218. Up to 498 conditions per place. [2024-06-28 03:28:57,176 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 88 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-28 03:28:57,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 1175 flow [2024-06-28 03:28:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:28:57,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:28:57,178 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 923 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:28:57,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 1175 flow [2024-06-28 03:28:57,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 1122 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:28:57,194 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 927 flow [2024-06-28 03:28:57,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=927, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2024-06-28 03:28:57,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-28 03:28:57,195 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 927 flow [2024-06-28 03:28:57,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:57,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:57,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:57,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:28:57,196 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:57,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:57,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1546423065, now seen corresponding path program 4 times [2024-06-28 03:28:57,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:57,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515498049] [2024-06-28 03:28:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:57,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:57,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:57,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515498049] [2024-06-28 03:28:57,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515498049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:57,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:57,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:57,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254151189] [2024-06-28 03:28:57,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:57,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:57,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:57,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:57,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:57,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 927 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:57,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:57,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:57,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:58,006 INFO L124 PetriNetUnfolderBase]: 295/524 cut-off events. [2024-06-28 03:28:58,006 INFO L125 PetriNetUnfolderBase]: For 11366/11366 co-relation queries the response was YES. [2024-06-28 03:28:58,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 524 events. 295/524 cut-off events. For 11366/11366 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2022 event pairs, 52 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3194. Up to 400 conditions per place. [2024-06-28 03:28:58,009 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 42 changer transitions 0/111 dead transitions. [2024-06-28 03:28:58,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 111 transitions, 1239 flow [2024-06-28 03:28:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:28:58,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:28:58,011 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 927 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:28:58,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 111 transitions, 1239 flow [2024-06-28 03:28:58,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 1176 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:58,028 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 953 flow [2024-06-28 03:28:58,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=953, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2024-06-28 03:28:58,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 03:28:58,028 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 953 flow [2024-06-28 03:28:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:58,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:58,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:58,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:28:58,029 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:58,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 325269062, now seen corresponding path program 3 times [2024-06-28 03:28:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:58,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961607910] [2024-06-28 03:28:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:58,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961607910] [2024-06-28 03:28:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961607910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:58,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:58,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934479496] [2024-06-28 03:28:58,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:58,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:58,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:28:58,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 953 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:58,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:58,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:28:58,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:59,270 INFO L124 PetriNetUnfolderBase]: 283/510 cut-off events. [2024-06-28 03:28:59,270 INFO L125 PetriNetUnfolderBase]: For 12183/12185 co-relation queries the response was YES. [2024-06-28 03:28:59,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 510 events. 283/510 cut-off events. For 12183/12185 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2024 event pairs, 59 based on Foata normal form. 1/508 useless extension candidates. Maximal degree in co-relation 3191. Up to 407 conditions per place. [2024-06-28 03:28:59,274 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 25 changer transitions 0/107 dead transitions. [2024-06-28 03:28:59,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 1190 flow [2024-06-28 03:28:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:28:59,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:28:59,276 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 953 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:28:59,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 1190 flow [2024-06-28 03:28:59,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 1107 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:59,294 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 942 flow [2024-06-28 03:28:59,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=942, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-28 03:28:59,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 03:28:59,295 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 942 flow [2024-06-28 03:28:59,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:59,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:59,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:59,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:28:59,296 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:28:59,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash -328030295, now seen corresponding path program 5 times [2024-06-28 03:28:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:59,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693447497] [2024-06-28 03:28:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:59,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693447497] [2024-06-28 03:28:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693447497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:59,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:59,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956324498] [2024-06-28 03:28:59,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:59,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:59,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:59,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:28:59,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:59,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:59,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:28:59,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:00,241 INFO L124 PetriNetUnfolderBase]: 299/531 cut-off events. [2024-06-28 03:29:00,241 INFO L125 PetriNetUnfolderBase]: For 12742/12742 co-relation queries the response was YES. [2024-06-28 03:29:00,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3338 conditions, 531 events. 299/531 cut-off events. For 12742/12742 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2078 event pairs, 56 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3287. Up to 431 conditions per place. [2024-06-28 03:29:00,246 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-06-28 03:29:00,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 1236 flow [2024-06-28 03:29:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:29:00,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:29:00,248 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 942 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:29:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 1236 flow [2024-06-28 03:29:00,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 1148 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:00,267 INFO L231 Difference]: Finished difference. Result has 115 places, 99 transitions, 973 flow [2024-06-28 03:29:00,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=973, PETRI_PLACES=115, PETRI_TRANSITIONS=99} [2024-06-28 03:29:00,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 03:29:00,268 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 99 transitions, 973 flow [2024-06-28 03:29:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:00,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:00,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:29:00,269 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:00,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 329084294, now seen corresponding path program 2 times [2024-06-28 03:29:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276099144] [2024-06-28 03:29:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276099144] [2024-06-28 03:29:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276099144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:00,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:00,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520094612] [2024-06-28 03:29:00,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:00,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:00,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:00,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 99 transitions, 973 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:00,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:00,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:00,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:01,066 INFO L124 PetriNetUnfolderBase]: 302/537 cut-off events. [2024-06-28 03:29:01,067 INFO L125 PetriNetUnfolderBase]: For 13656/13656 co-relation queries the response was YES. [2024-06-28 03:29:01,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3448 conditions, 537 events. 302/537 cut-off events. For 13656/13656 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2117 event pairs, 88 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 3395. Up to 495 conditions per place. [2024-06-28 03:29:01,071 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 86 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-28 03:29:01,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 110 transitions, 1229 flow [2024-06-28 03:29:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-28 03:29:01,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:29:01,073 INFO L175 Difference]: Start difference. First operand has 115 places, 99 transitions, 973 flow. Second operand 8 states and 82 transitions. [2024-06-28 03:29:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 110 transitions, 1229 flow [2024-06-28 03:29:01,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 1150 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:01,088 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 968 flow [2024-06-28 03:29:01,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=968, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-06-28 03:29:01,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-28 03:29:01,088 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 968 flow [2024-06-28 03:29:01,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:01,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:01,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:01,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:29:01,089 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:01,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash 329084077, now seen corresponding path program 6 times [2024-06-28 03:29:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777582428] [2024-06-28 03:29:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:01,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777582428] [2024-06-28 03:29:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777582428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:01,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:01,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:01,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067489473] [2024-06-28 03:29:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:01,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:01,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 968 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:01,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:01,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:01,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:02,008 INFO L124 PetriNetUnfolderBase]: 318/561 cut-off events. [2024-06-28 03:29:02,008 INFO L125 PetriNetUnfolderBase]: For 15973/15973 co-relation queries the response was YES. [2024-06-28 03:29:02,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 561 events. 318/561 cut-off events. For 15973/15973 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2216 event pairs, 48 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 3646. Up to 390 conditions per place. [2024-06-28 03:29:02,013 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 55 changer transitions 0/118 dead transitions. [2024-06-28 03:29:02,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 118 transitions, 1372 flow [2024-06-28 03:29:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 03:29:02,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:29:02,014 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 968 flow. Second operand 8 states and 90 transitions. [2024-06-28 03:29:02,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 118 transitions, 1372 flow [2024-06-28 03:29:02,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 1316 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:02,035 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 1112 flow [2024-06-28 03:29:02,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1112, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-06-28 03:29:02,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-28 03:29:02,036 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 1112 flow [2024-06-28 03:29:02,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:02,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:02,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:02,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:29:02,036 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:02,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash -324311225, now seen corresponding path program 7 times [2024-06-28 03:29:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764585860] [2024-06-28 03:29:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764585860] [2024-06-28 03:29:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764585860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:02,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756378949] [2024-06-28 03:29:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:02,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:02,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:02,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 1112 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:02,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:02,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:02,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:02,853 INFO L124 PetriNetUnfolderBase]: 319/564 cut-off events. [2024-06-28 03:29:02,853 INFO L125 PetriNetUnfolderBase]: For 16117/16117 co-relation queries the response was YES. [2024-06-28 03:29:02,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3807 conditions, 564 events. 319/564 cut-off events. For 16117/16117 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2229 event pairs, 58 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 3752. Up to 393 conditions per place. [2024-06-28 03:29:02,857 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 51 changer transitions 0/120 dead transitions. [2024-06-28 03:29:02,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 120 transitions, 1486 flow [2024-06-28 03:29:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 03:29:02,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 03:29:02,858 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 1112 flow. Second operand 8 states and 91 transitions. [2024-06-28 03:29:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 120 transitions, 1486 flow [2024-06-28 03:29:02,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 1395 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:02,874 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 1175 flow [2024-06-28 03:29:02,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1175, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2024-06-28 03:29:02,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 03:29:02,875 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 1175 flow [2024-06-28 03:29:02,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:02,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:02,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:29:02,875 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:02,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1664256, now seen corresponding path program 3 times [2024-06-28 03:29:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:02,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639821246] [2024-06-28 03:29:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:02,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:03,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639821246] [2024-06-28 03:29:03,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639821246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:03,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668667879] [2024-06-28 03:29:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 1175 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:03,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:03,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:03,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:03,689 INFO L124 PetriNetUnfolderBase]: 327/579 cut-off events. [2024-06-28 03:29:03,689 INFO L125 PetriNetUnfolderBase]: For 15966/15966 co-relation queries the response was YES. [2024-06-28 03:29:03,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 579 events. 327/579 cut-off events. For 15966/15966 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2323 event pairs, 94 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3874. Up to 507 conditions per place. [2024-06-28 03:29:03,694 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 89 selfloop transitions, 32 changer transitions 0/123 dead transitions. [2024-06-28 03:29:03,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 1603 flow [2024-06-28 03:29:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:29:03,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:29:03,695 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 1175 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:29:03,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 1603 flow [2024-06-28 03:29:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 1500 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:03,720 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 1224 flow [2024-06-28 03:29:03,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1224, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2024-06-28 03:29:03,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-28 03:29:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 1224 flow [2024-06-28 03:29:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:03,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:03,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:29:03,722 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:03,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1664039, now seen corresponding path program 8 times [2024-06-28 03:29:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530688418] [2024-06-28 03:29:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:04,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:04,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530688418] [2024-06-28 03:29:04,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530688418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:04,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:04,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:04,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178725985] [2024-06-28 03:29:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:04,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:04,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:04,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 1224 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:04,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:04,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:04,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:04,559 INFO L124 PetriNetUnfolderBase]: 333/586 cut-off events. [2024-06-28 03:29:04,560 INFO L125 PetriNetUnfolderBase]: For 16385/16385 co-relation queries the response was YES. [2024-06-28 03:29:04,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 586 events. 333/586 cut-off events. For 16385/16385 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2355 event pairs, 57 based on Foata normal form. 2/588 useless extension candidates. Maximal degree in co-relation 3921. Up to 376 conditions per place. [2024-06-28 03:29:04,565 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 66 changer transitions 0/129 dead transitions. [2024-06-28 03:29:04,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 129 transitions, 1644 flow [2024-06-28 03:29:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 03:29:04,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:29:04,566 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 1224 flow. Second operand 8 states and 90 transitions. [2024-06-28 03:29:04,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 129 transitions, 1644 flow [2024-06-28 03:29:04,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 1611 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:29:04,591 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 1408 flow [2024-06-28 03:29:04,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1408, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-28 03:29:04,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 03:29:04,592 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1408 flow [2024-06-28 03:29:04,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:04,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:04,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:04,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:29:04,592 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:04,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash -5687611, now seen corresponding path program 9 times [2024-06-28 03:29:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515457748] [2024-06-28 03:29:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:04,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515457748] [2024-06-28 03:29:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515457748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:05,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898674026] [2024-06-28 03:29:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:05,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:05,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1408 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:05,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:05,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:05,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:05,420 INFO L124 PetriNetUnfolderBase]: 339/596 cut-off events. [2024-06-28 03:29:05,420 INFO L125 PetriNetUnfolderBase]: For 17903/17903 co-relation queries the response was YES. [2024-06-28 03:29:05,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 596 events. 339/596 cut-off events. For 17903/17903 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2405 event pairs, 70 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4211. Up to 382 conditions per place. [2024-06-28 03:29:05,424 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 58 changer transitions 0/133 dead transitions. [2024-06-28 03:29:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 133 transitions, 1868 flow [2024-06-28 03:29:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:29:05,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:29:05,438 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 1408 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:29:05,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 133 transitions, 1868 flow [2024-06-28 03:29:05,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 133 transitions, 1776 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:29:05,467 INFO L231 Difference]: Finished difference. Result has 134 places, 120 transitions, 1479 flow [2024-06-28 03:29:05,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1479, PETRI_PLACES=134, PETRI_TRANSITIONS=120} [2024-06-28 03:29:05,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-28 03:29:05,469 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 120 transitions, 1479 flow [2024-06-28 03:29:05,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:05,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:05,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:29:05,470 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1931166, now seen corresponding path program 4 times [2024-06-28 03:29:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237845933] [2024-06-28 03:29:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237845933] [2024-06-28 03:29:06,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237845933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:06,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:06,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731843719] [2024-06-28 03:29:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:06,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:06,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 120 transitions, 1479 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:06,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:06,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:06,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:06,394 INFO L124 PetriNetUnfolderBase]: 337/595 cut-off events. [2024-06-28 03:29:06,394 INFO L125 PetriNetUnfolderBase]: For 18009/18009 co-relation queries the response was YES. [2024-06-28 03:29:06,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 595 events. 337/595 cut-off events. For 18009/18009 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2410 event pairs, 96 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 4262. Up to 525 conditions per place. [2024-06-28 03:29:06,399 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 91 selfloop transitions, 35 changer transitions 0/128 dead transitions. [2024-06-28 03:29:06,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 128 transitions, 1807 flow [2024-06-28 03:29:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:29:06,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:29:06,401 INFO L175 Difference]: Start difference. First operand has 134 places, 120 transitions, 1479 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:29:06,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 128 transitions, 1807 flow [2024-06-28 03:29:06,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 1578 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:06,430 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1325 flow [2024-06-28 03:29:06,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1325, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2024-06-28 03:29:06,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:29:06,431 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1325 flow [2024-06-28 03:29:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:06,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:06,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:06,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:29:06,432 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:06,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -5687394, now seen corresponding path program 5 times [2024-06-28 03:29:06,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:06,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689275427] [2024-06-28 03:29:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:07,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:07,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689275427] [2024-06-28 03:29:07,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689275427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:07,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:07,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341821819] [2024-06-28 03:29:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:07,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:07,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:07,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1325 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:07,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:07,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:07,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:07,264 INFO L124 PetriNetUnfolderBase]: 335/592 cut-off events. [2024-06-28 03:29:07,264 INFO L125 PetriNetUnfolderBase]: For 17879/17879 co-relation queries the response was YES. [2024-06-28 03:29:07,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 592 events. 335/592 cut-off events. For 17879/17879 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2403 event pairs, 96 based on Foata normal form. 1/593 useless extension candidates. Maximal degree in co-relation 3997. Up to 523 conditions per place. [2024-06-28 03:29:07,269 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 93 selfloop transitions, 33 changer transitions 0/128 dead transitions. [2024-06-28 03:29:07,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 128 transitions, 1602 flow [2024-06-28 03:29:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:29:07,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-28 03:29:07,280 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1325 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:29:07,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 128 transitions, 1602 flow [2024-06-28 03:29:07,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 1530 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:07,313 INFO L231 Difference]: Finished difference. Result has 138 places, 121 transitions, 1333 flow [2024-06-28 03:29:07,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=138, PETRI_TRANSITIONS=121} [2024-06-28 03:29:07,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 03:29:07,314 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 121 transitions, 1333 flow [2024-06-28 03:29:07,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:07,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:07,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:07,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:29:07,315 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:07,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:07,316 INFO L85 PathProgramCache]: Analyzing trace with hash -5693191, now seen corresponding path program 10 times [2024-06-28 03:29:07,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:07,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917628367] [2024-06-28 03:29:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:07,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:07,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917628367] [2024-06-28 03:29:07,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917628367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:07,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:07,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:07,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132033760] [2024-06-28 03:29:07,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:07,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:07,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 121 transitions, 1333 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:07,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:07,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:07,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:08,160 INFO L124 PetriNetUnfolderBase]: 331/584 cut-off events. [2024-06-28 03:29:08,160 INFO L125 PetriNetUnfolderBase]: For 18424/18424 co-relation queries the response was YES. [2024-06-28 03:29:08,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 584 events. 331/584 cut-off events. For 18424/18424 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2359 event pairs, 70 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3923. Up to 373 conditions per place. [2024-06-28 03:29:08,165 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 59 changer transitions 0/132 dead transitions. [2024-06-28 03:29:08,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 132 transitions, 1691 flow [2024-06-28 03:29:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 03:29:08,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 03:29:08,167 INFO L175 Difference]: Start difference. First operand has 138 places, 121 transitions, 1333 flow. Second operand 8 states and 91 transitions. [2024-06-28 03:29:08,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 132 transitions, 1691 flow [2024-06-28 03:29:08,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 132 transitions, 1613 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:08,202 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1378 flow [2024-06-28 03:29:08,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2024-06-28 03:29:08,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 03:29:08,203 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1378 flow [2024-06-28 03:29:08,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:08,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:08,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:08,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:29:08,203 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:08,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-28 03:29:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:08,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143696550] [2024-06-28 03:29:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:09,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143696550] [2024-06-28 03:29:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143696550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:09,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:09,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:09,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227711798] [2024-06-28 03:29:09,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:09,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:09,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:09,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:09,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:09,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:09,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:09,338 INFO L124 PetriNetUnfolderBase]: 329/584 cut-off events. [2024-06-28 03:29:09,338 INFO L125 PetriNetUnfolderBase]: For 18924/18924 co-relation queries the response was YES. [2024-06-28 03:29:09,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 584 events. 329/584 cut-off events. For 18924/18924 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2381 event pairs, 113 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 3972. Up to 555 conditions per place. [2024-06-28 03:29:09,342 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 114 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-06-28 03:29:09,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 131 transitions, 1666 flow [2024-06-28 03:29:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 03:29:09,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:29:09,343 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1378 flow. Second operand 9 states and 87 transitions. [2024-06-28 03:29:09,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 131 transitions, 1666 flow [2024-06-28 03:29:09,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 131 transitions, 1543 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:09,368 INFO L231 Difference]: Finished difference. Result has 142 places, 123 transitions, 1306 flow [2024-06-28 03:29:09,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1306, PETRI_PLACES=142, PETRI_TRANSITIONS=123} [2024-06-28 03:29:09,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 03:29:09,369 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 123 transitions, 1306 flow [2024-06-28 03:29:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:09,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:09,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:29:09,370 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:09,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1099085290, now seen corresponding path program 1 times [2024-06-28 03:29:09,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:09,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379825285] [2024-06-28 03:29:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:09,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379825285] [2024-06-28 03:29:10,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379825285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:10,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:10,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491505144] [2024-06-28 03:29:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:10,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:10,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:10,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 123 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:10,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:10,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:10,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:10,500 INFO L124 PetriNetUnfolderBase]: 322/586 cut-off events. [2024-06-28 03:29:10,501 INFO L125 PetriNetUnfolderBase]: For 21960/21964 co-relation queries the response was YES. [2024-06-28 03:29:10,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 586 events. 322/586 cut-off events. For 21960/21964 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2543 event pairs, 55 based on Foata normal form. 2/583 useless extension candidates. Maximal degree in co-relation 3983. Up to 438 conditions per place. [2024-06-28 03:29:10,507 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-28 03:29:10,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 141 transitions, 1610 flow [2024-06-28 03:29:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:29:10,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:29:10,508 INFO L175 Difference]: Start difference. First operand has 142 places, 123 transitions, 1306 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:29:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 141 transitions, 1610 flow [2024-06-28 03:29:10,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 141 transitions, 1511 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:29:10,547 INFO L231 Difference]: Finished difference. Result has 141 places, 125 transitions, 1283 flow [2024-06-28 03:29:10,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1283, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2024-06-28 03:29:10,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 03:29:10,548 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 1283 flow [2024-06-28 03:29:10,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:10,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:10,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:10,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:29:10,548 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:10,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash 637342662, now seen corresponding path program 2 times [2024-06-28 03:29:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:10,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31703358] [2024-06-28 03:29:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31703358] [2024-06-28 03:29:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31703358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:11,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699374635] [2024-06-28 03:29:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:11,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:11,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 1283 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:11,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:11,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:11,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:11,727 INFO L124 PetriNetUnfolderBase]: 329/603 cut-off events. [2024-06-28 03:29:11,728 INFO L125 PetriNetUnfolderBase]: For 22003/22005 co-relation queries the response was YES. [2024-06-28 03:29:11,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4087 conditions, 603 events. 329/603 cut-off events. For 22003/22005 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2643 event pairs, 83 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 4023. Up to 474 conditions per place. [2024-06-28 03:29:11,731 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-28 03:29:11,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 143 transitions, 1597 flow [2024-06-28 03:29:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:29:11,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:29:11,732 INFO L175 Difference]: Start difference. First operand has 141 places, 125 transitions, 1283 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:29:11,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 143 transitions, 1597 flow [2024-06-28 03:29:11,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 1516 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:11,795 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 1286 flow [2024-06-28 03:29:11,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-06-28 03:29:11,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 03:29:11,796 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 1286 flow [2024-06-28 03:29:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:11,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:11,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:29:11,796 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:11,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 639211032, now seen corresponding path program 3 times [2024-06-28 03:29:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389639423] [2024-06-28 03:29:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:12,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389639423] [2024-06-28 03:29:12,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389639423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:12,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:12,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:12,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821459228] [2024-06-28 03:29:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:12,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:12,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:12,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:12,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:12,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:12,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:12,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:12,999 INFO L124 PetriNetUnfolderBase]: 332/610 cut-off events. [2024-06-28 03:29:12,999 INFO L125 PetriNetUnfolderBase]: For 25169/25172 co-relation queries the response was YES. [2024-06-28 03:29:13,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 610 events. 332/610 cut-off events. For 25169/25172 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2683 event pairs, 81 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 4131. Up to 485 conditions per place. [2024-06-28 03:29:13,003 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 96 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2024-06-28 03:29:13,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 1596 flow [2024-06-28 03:29:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:29:13,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:29:13,009 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 1286 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:29:13,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 1596 flow [2024-06-28 03:29:13,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 1534 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:13,046 INFO L231 Difference]: Finished difference. Result has 146 places, 128 transitions, 1307 flow [2024-06-28 03:29:13,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=146, PETRI_TRANSITIONS=128} [2024-06-28 03:29:13,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 03:29:13,047 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 128 transitions, 1307 flow [2024-06-28 03:29:13,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:13,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:13,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:13,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:29:13,048 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:13,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:13,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2056850089, now seen corresponding path program 1 times [2024-06-28 03:29:13,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:13,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616880773] [2024-06-28 03:29:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:13,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:13,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616880773] [2024-06-28 03:29:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616880773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:13,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:13,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:13,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151591109] [2024-06-28 03:29:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:13,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:13,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:13,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:13,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 128 transitions, 1307 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:13,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:13,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:13,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:14,066 INFO L124 PetriNetUnfolderBase]: 357/639 cut-off events. [2024-06-28 03:29:14,066 INFO L125 PetriNetUnfolderBase]: For 23968/23968 co-relation queries the response was YES. [2024-06-28 03:29:14,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 639 events. 357/639 cut-off events. For 23968/23968 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2762 event pairs, 65 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 4205. Up to 558 conditions per place. [2024-06-28 03:29:14,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 28 changer transitions 0/146 dead transitions. [2024-06-28 03:29:14,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 1675 flow [2024-06-28 03:29:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:29:14,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:29:14,072 INFO L175 Difference]: Start difference. First operand has 146 places, 128 transitions, 1307 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:29:14,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 1675 flow [2024-06-28 03:29:14,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1604 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:14,103 INFO L231 Difference]: Finished difference. Result has 149 places, 130 transitions, 1329 flow [2024-06-28 03:29:14,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1329, PETRI_PLACES=149, PETRI_TRANSITIONS=130} [2024-06-28 03:29:14,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-28 03:29:14,104 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 130 transitions, 1329 flow [2024-06-28 03:29:14,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:14,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:14,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:14,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:29:14,104 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:14,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 631801846, now seen corresponding path program 1 times [2024-06-28 03:29:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313457800] [2024-06-28 03:29:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:14,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:14,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:14,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313457800] [2024-06-28 03:29:14,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313457800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:14,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:14,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277941931] [2024-06-28 03:29:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:14,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:14,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:14,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 130 transitions, 1329 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:14,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:14,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:14,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:15,099 INFO L124 PetriNetUnfolderBase]: 360/644 cut-off events. [2024-06-28 03:29:15,099 INFO L125 PetriNetUnfolderBase]: For 24529/24529 co-relation queries the response was YES. [2024-06-28 03:29:15,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 644 events. 360/644 cut-off events. For 24529/24529 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2773 event pairs, 88 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 4279. Up to 565 conditions per place. [2024-06-28 03:29:15,103 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-28 03:29:15,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 1705 flow [2024-06-28 03:29:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:29:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:29:15,104 INFO L175 Difference]: Start difference. First operand has 149 places, 130 transitions, 1329 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:29:15,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 147 transitions, 1705 flow [2024-06-28 03:29:15,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 147 transitions, 1628 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:15,136 INFO L231 Difference]: Finished difference. Result has 150 places, 132 transitions, 1364 flow [2024-06-28 03:29:15,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1364, PETRI_PLACES=150, PETRI_TRANSITIONS=132} [2024-06-28 03:29:15,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 03:29:15,137 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 132 transitions, 1364 flow [2024-06-28 03:29:15,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:15,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:15,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:29:15,138 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:15,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 787310720, now seen corresponding path program 1 times [2024-06-28 03:29:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131071418] [2024-06-28 03:29:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:15,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:15,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131071418] [2024-06-28 03:29:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131071418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:15,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531984484] [2024-06-28 03:29:15,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:15,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:15,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:15,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 132 transitions, 1364 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:15,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:15,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:15,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:15,893 INFO L124 PetriNetUnfolderBase]: 366/654 cut-off events. [2024-06-28 03:29:15,893 INFO L125 PetriNetUnfolderBase]: For 26383/26383 co-relation queries the response was YES. [2024-06-28 03:29:15,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 654 events. 366/654 cut-off events. For 26383/26383 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2822 event pairs, 68 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 4364. Up to 573 conditions per place. [2024-06-28 03:29:15,897 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-28 03:29:15,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 151 transitions, 1748 flow [2024-06-28 03:29:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:29:15,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:29:15,898 INFO L175 Difference]: Start difference. First operand has 150 places, 132 transitions, 1364 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:29:15,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 151 transitions, 1748 flow [2024-06-28 03:29:15,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 151 transitions, 1674 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:15,938 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 1391 flow [2024-06-28 03:29:15,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1391, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2024-06-28 03:29:15,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 03:29:15,938 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 1391 flow [2024-06-28 03:29:15,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:15,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:15,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:15,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:29:15,939 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:15,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash -103263656, now seen corresponding path program 4 times [2024-06-28 03:29:15,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:15,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030136404] [2024-06-28 03:29:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:16,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:16,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030136404] [2024-06-28 03:29:16,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030136404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:16,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:16,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549648578] [2024-06-28 03:29:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:16,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:16,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:16,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:16,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 1391 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:16,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:16,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:17,216 INFO L124 PetriNetUnfolderBase]: 346/642 cut-off events. [2024-06-28 03:29:17,217 INFO L125 PetriNetUnfolderBase]: For 28204/28206 co-relation queries the response was YES. [2024-06-28 03:29:17,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4425 conditions, 642 events. 346/642 cut-off events. For 28204/28206 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2921 event pairs, 59 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4357. Up to 511 conditions per place. [2024-06-28 03:29:17,221 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 23 changer transitions 0/151 dead transitions. [2024-06-28 03:29:17,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 151 transitions, 1721 flow [2024-06-28 03:29:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:29:17,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:29:17,222 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 1391 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:29:17,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 151 transitions, 1721 flow [2024-06-28 03:29:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1636 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:17,261 INFO L231 Difference]: Finished difference. Result has 155 places, 136 transitions, 1392 flow [2024-06-28 03:29:17,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1392, PETRI_PLACES=155, PETRI_TRANSITIONS=136} [2024-06-28 03:29:17,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 03:29:17,262 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 136 transitions, 1392 flow [2024-06-28 03:29:17,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:17,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:17,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:17,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:29:17,262 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:17,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash 617737820, now seen corresponding path program 5 times [2024-06-28 03:29:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367868937] [2024-06-28 03:29:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367868937] [2024-06-28 03:29:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367868937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049482099] [2024-06-28 03:29:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:18,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:18,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 136 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:18,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:18,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:18,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:18,506 INFO L124 PetriNetUnfolderBase]: 350/648 cut-off events. [2024-06-28 03:29:18,507 INFO L125 PetriNetUnfolderBase]: For 29870/29874 co-relation queries the response was YES. [2024-06-28 03:29:18,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 648 events. 350/648 cut-off events. For 29870/29874 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2945 event pairs, 59 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 4405. Up to 520 conditions per place. [2024-06-28 03:29:18,511 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-28 03:29:18,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 151 transitions, 1718 flow [2024-06-28 03:29:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:29:18,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:29:18,512 INFO L175 Difference]: Start difference. First operand has 155 places, 136 transitions, 1392 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:29:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 151 transitions, 1718 flow [2024-06-28 03:29:18,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 151 transitions, 1652 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:18,549 INFO L231 Difference]: Finished difference. Result has 158 places, 137 transitions, 1411 flow [2024-06-28 03:29:18,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1411, PETRI_PLACES=158, PETRI_TRANSITIONS=137} [2024-06-28 03:29:18,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-28 03:29:18,550 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 137 transitions, 1411 flow [2024-06-28 03:29:18,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:18,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:18,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:29:18,550 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:18,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash 617737944, now seen corresponding path program 2 times [2024-06-28 03:29:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728562372] [2024-06-28 03:29:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728562372] [2024-06-28 03:29:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728562372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:19,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380898257] [2024-06-28 03:29:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:19,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:19,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:19,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:19,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:19,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 137 transitions, 1411 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:19,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:19,636 INFO L124 PetriNetUnfolderBase]: 377/678 cut-off events. [2024-06-28 03:29:19,637 INFO L125 PetriNetUnfolderBase]: For 29301/29301 co-relation queries the response was YES. [2024-06-28 03:29:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 678 events. 377/678 cut-off events. For 29301/29301 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2999 event pairs, 63 based on Foata normal form. 1/679 useless extension candidates. Maximal degree in co-relation 4519. Up to 599 conditions per place. [2024-06-28 03:29:19,641 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-28 03:29:19,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 151 transitions, 1753 flow [2024-06-28 03:29:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:29:19,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:29:19,642 INFO L175 Difference]: Start difference. First operand has 158 places, 137 transitions, 1411 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:29:19,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 151 transitions, 1753 flow [2024-06-28 03:29:19,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 151 transitions, 1668 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:19,685 INFO L231 Difference]: Finished difference. Result has 160 places, 137 transitions, 1392 flow [2024-06-28 03:29:19,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1392, PETRI_PLACES=160, PETRI_TRANSITIONS=137} [2024-06-28 03:29:19,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:29:19,685 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 137 transitions, 1392 flow [2024-06-28 03:29:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:19,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:19,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:29:19,686 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 735825500, now seen corresponding path program 6 times [2024-06-28 03:29:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874761885] [2024-06-28 03:29:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:20,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:20,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874761885] [2024-06-28 03:29:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874761885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:20,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206517144] [2024-06-28 03:29:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:20,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:20,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:20,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 137 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:20,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:20,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:20,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:20,784 INFO L124 PetriNetUnfolderBase]: 350/656 cut-off events. [2024-06-28 03:29:20,784 INFO L125 PetriNetUnfolderBase]: For 31661/31661 co-relation queries the response was YES. [2024-06-28 03:29:20,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 656 events. 350/656 cut-off events. For 31661/31661 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3030 event pairs, 61 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4422. Up to 510 conditions per place. [2024-06-28 03:29:20,789 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 33 changer transitions 0/152 dead transitions. [2024-06-28 03:29:20,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 152 transitions, 1724 flow [2024-06-28 03:29:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:29:20,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:29:20,790 INFO L175 Difference]: Start difference. First operand has 160 places, 137 transitions, 1392 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:29:20,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 152 transitions, 1724 flow [2024-06-28 03:29:20,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 152 transitions, 1622 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:20,834 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 1390 flow [2024-06-28 03:29:20,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1390, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2024-06-28 03:29:20,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:29:20,834 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 1390 flow [2024-06-28 03:29:20,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:20,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:20,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:20,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:29:20,835 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:20,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash 735830460, now seen corresponding path program 2 times [2024-06-28 03:29:20,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:20,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171890473] [2024-06-28 03:29:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:20,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171890473] [2024-06-28 03:29:21,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171890473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:21,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:21,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017522248] [2024-06-28 03:29:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:21,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:21,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:21,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:21,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:21,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:21,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:21,650 INFO L124 PetriNetUnfolderBase]: 402/721 cut-off events. [2024-06-28 03:29:21,650 INFO L125 PetriNetUnfolderBase]: For 35797/35797 co-relation queries the response was YES. [2024-06-28 03:29:21,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 721 events. 402/721 cut-off events. For 35797/35797 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3223 event pairs, 72 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 4952. Up to 549 conditions per place. [2024-06-28 03:29:21,654 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 47 changer transitions 0/162 dead transitions. [2024-06-28 03:29:21,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 162 transitions, 2048 flow [2024-06-28 03:29:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:29:21,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:29:21,656 INFO L175 Difference]: Start difference. First operand has 160 places, 138 transitions, 1390 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:29:21,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 162 transitions, 2048 flow [2024-06-28 03:29:21,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 162 transitions, 1958 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:21,705 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1511 flow [2024-06-28 03:29:21,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1511, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-28 03:29:21,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 03:29:21,706 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1511 flow [2024-06-28 03:29:21,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:21,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:21,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:29:21,706 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:21,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 736009950, now seen corresponding path program 3 times [2024-06-28 03:29:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:21,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309332117] [2024-06-28 03:29:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:22,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:22,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309332117] [2024-06-28 03:29:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309332117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:22,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576221462] [2024-06-28 03:29:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:22,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:22,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:22,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:22,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:22,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:22,488 INFO L124 PetriNetUnfolderBase]: 408/731 cut-off events. [2024-06-28 03:29:22,489 INFO L125 PetriNetUnfolderBase]: For 37365/37365 co-relation queries the response was YES. [2024-06-28 03:29:22,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5150 conditions, 731 events. 408/731 cut-off events. For 37365/37365 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3289 event pairs, 63 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 5076. Up to 555 conditions per place. [2024-06-28 03:29:22,493 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 58 changer transitions 0/163 dead transitions. [2024-06-28 03:29:22,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 163 transitions, 2017 flow [2024-06-28 03:29:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:29:22,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:29:22,494 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1511 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:29:22,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 163 transitions, 2017 flow [2024-06-28 03:29:22,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 1952 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:22,552 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1607 flow [2024-06-28 03:29:22,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1607, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-28 03:29:22,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 03:29:22,553 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1607 flow [2024-06-28 03:29:22,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:22,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:22,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:22,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:29:22,553 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:22,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash -982928154, now seen corresponding path program 1 times [2024-06-28 03:29:22,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:22,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705416934] [2024-06-28 03:29:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:23,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:23,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705416934] [2024-06-28 03:29:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705416934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:23,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655761160] [2024-06-28 03:29:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:23,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:23,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1607 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:23,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:23,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:23,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:23,355 INFO L124 PetriNetUnfolderBase]: 411/735 cut-off events. [2024-06-28 03:29:23,355 INFO L125 PetriNetUnfolderBase]: For 37903/37903 co-relation queries the response was YES. [2024-06-28 03:29:23,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 735 events. 411/735 cut-off events. For 37903/37903 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3317 event pairs, 111 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 5221. Up to 699 conditions per place. [2024-06-28 03:29:23,360 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 19 changer transitions 0/160 dead transitions. [2024-06-28 03:29:23,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 160 transitions, 1973 flow [2024-06-28 03:29:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:29:23,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:29:23,363 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1607 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:29:23,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 160 transitions, 1973 flow [2024-06-28 03:29:23,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 160 transitions, 1841 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:23,421 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1542 flow [2024-06-28 03:29:23,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1542, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-28 03:29:23,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 03:29:23,421 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1542 flow [2024-06-28 03:29:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:23,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:23,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:29:23,422 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:23,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:23,422 INFO L85 PathProgramCache]: Analyzing trace with hash -982934912, now seen corresponding path program 4 times [2024-06-28 03:29:23,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:23,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417527116] [2024-06-28 03:29:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:23,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:23,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:23,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417527116] [2024-06-28 03:29:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417527116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:23,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:23,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:23,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372906072] [2024-06-28 03:29:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:23,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:24,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:24,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1542 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:24,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:24,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:24,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:24,214 INFO L124 PetriNetUnfolderBase]: 407/729 cut-off events. [2024-06-28 03:29:24,214 INFO L125 PetriNetUnfolderBase]: For 37493/37493 co-relation queries the response was YES. [2024-06-28 03:29:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 729 events. 407/729 cut-off events. For 37493/37493 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3276 event pairs, 62 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 5031. Up to 557 conditions per place. [2024-06-28 03:29:24,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 53 changer transitions 0/165 dead transitions. [2024-06-28 03:29:24,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 165 transitions, 2016 flow [2024-06-28 03:29:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:29:24,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 03:29:24,220 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1542 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:29:24,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 165 transitions, 2016 flow [2024-06-28 03:29:24,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 1939 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:24,287 INFO L231 Difference]: Finished difference. Result has 173 places, 148 transitions, 1576 flow [2024-06-28 03:29:24,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1576, PETRI_PLACES=173, PETRI_TRANSITIONS=148} [2024-06-28 03:29:24,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 03:29:24,287 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 148 transitions, 1576 flow [2024-06-28 03:29:24,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:24,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:24,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:24,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:29:24,288 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:24,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash -381992110, now seen corresponding path program 7 times [2024-06-28 03:29:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680911400] [2024-06-28 03:29:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680911400] [2024-06-28 03:29:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680911400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:25,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046563525] [2024-06-28 03:29:25,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:25,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:25,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:25,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:25,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 148 transitions, 1576 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:25,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:25,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:25,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:25,389 INFO L124 PetriNetUnfolderBase]: 377/699 cut-off events. [2024-06-28 03:29:25,389 INFO L125 PetriNetUnfolderBase]: For 42038/42044 co-relation queries the response was YES. [2024-06-28 03:29:25,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 699 events. 377/699 cut-off events. For 42038/42044 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3295 event pairs, 59 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 5087. Up to 512 conditions per place. [2024-06-28 03:29:25,394 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 113 selfloop transitions, 28 changer transitions 0/162 dead transitions. [2024-06-28 03:29:25,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 162 transitions, 1920 flow [2024-06-28 03:29:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 03:29:25,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:29:25,395 INFO L175 Difference]: Start difference. First operand has 173 places, 148 transitions, 1576 flow. Second operand 8 states and 92 transitions. [2024-06-28 03:29:25,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 162 transitions, 1920 flow [2024-06-28 03:29:25,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 162 transitions, 1829 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:25,455 INFO L231 Difference]: Finished difference. Result has 173 places, 149 transitions, 1583 flow [2024-06-28 03:29:25,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1583, PETRI_PLACES=173, PETRI_TRANSITIONS=149} [2024-06-28 03:29:25,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 03:29:25,455 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 149 transitions, 1583 flow [2024-06-28 03:29:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:25,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:25,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:25,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:29:25,456 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:25,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -381931660, now seen corresponding path program 8 times [2024-06-28 03:29:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:25,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841036864] [2024-06-28 03:29:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:25,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:26,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841036864] [2024-06-28 03:29:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841036864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:26,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:26,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147121456] [2024-06-28 03:29:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:26,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:26,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:26,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 149 transitions, 1583 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:26,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:26,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:26,677 INFO L124 PetriNetUnfolderBase]: 381/705 cut-off events. [2024-06-28 03:29:26,677 INFO L125 PetriNetUnfolderBase]: For 43880/43885 co-relation queries the response was YES. [2024-06-28 03:29:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 705 events. 381/705 cut-off events. For 43880/43885 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3315 event pairs, 78 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 5140. Up to 545 conditions per place. [2024-06-28 03:29:26,682 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 107 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2024-06-28 03:29:26,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 163 transitions, 1935 flow [2024-06-28 03:29:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:29:26,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:29:26,683 INFO L175 Difference]: Start difference. First operand has 173 places, 149 transitions, 1583 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:29:26,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 163 transitions, 1935 flow [2024-06-28 03:29:26,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 163 transitions, 1847 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:26,765 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 1610 flow [2024-06-28 03:29:26,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1610, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2024-06-28 03:29:26,765 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 03:29:26,765 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 1610 flow [2024-06-28 03:29:26,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:26,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:26,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:26,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:29:26,766 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:26,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1972583057, now seen corresponding path program 2 times [2024-06-28 03:29:26,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:26,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620078792] [2024-06-28 03:29:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:27,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:27,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620078792] [2024-06-28 03:29:27,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620078792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:27,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:27,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:27,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544056616] [2024-06-28 03:29:27,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:27,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:27,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:27,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:27,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:27,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:27,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 150 transitions, 1610 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:27,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:27,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:27,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:27,964 INFO L124 PetriNetUnfolderBase]: 418/750 cut-off events. [2024-06-28 03:29:27,964 INFO L125 PetriNetUnfolderBase]: For 37095/37095 co-relation queries the response was YES. [2024-06-28 03:29:27,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 750 events. 418/750 cut-off events. For 37095/37095 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3413 event pairs, 69 based on Foata normal form. 1/751 useless extension candidates. Maximal degree in co-relation 5227. Up to 660 conditions per place. [2024-06-28 03:29:27,968 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 33 changer transitions 0/168 dead transitions. [2024-06-28 03:29:27,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 168 transitions, 2034 flow [2024-06-28 03:29:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:29:27,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:29:27,969 INFO L175 Difference]: Start difference. First operand has 175 places, 150 transitions, 1610 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:29:27,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 168 transitions, 2034 flow [2024-06-28 03:29:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 168 transitions, 1945 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:28,043 INFO L231 Difference]: Finished difference. Result has 179 places, 152 transitions, 1639 flow [2024-06-28 03:29:28,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=179, PETRI_TRANSITIONS=152} [2024-06-28 03:29:28,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:29:28,044 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 152 transitions, 1639 flow [2024-06-28 03:29:28,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:28,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:28,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:28,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:29:28,044 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:28,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash -381931536, now seen corresponding path program 3 times [2024-06-28 03:29:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:28,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379713645] [2024-06-28 03:29:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:28,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379713645] [2024-06-28 03:29:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379713645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:28,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:28,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:28,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703702120] [2024-06-28 03:29:28,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:28,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:28,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:28,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 152 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:28,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:28,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:28,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:29,151 INFO L124 PetriNetUnfolderBase]: 416/747 cut-off events. [2024-06-28 03:29:29,151 INFO L125 PetriNetUnfolderBase]: For 34344/34344 co-relation queries the response was YES. [2024-06-28 03:29:29,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 747 events. 416/747 cut-off events. For 34344/34344 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3395 event pairs, 86 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 5088. Up to 628 conditions per place. [2024-06-28 03:29:29,156 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-28 03:29:29,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 165 transitions, 2005 flow [2024-06-28 03:29:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:29:29,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:29:29,156 INFO L175 Difference]: Start difference. First operand has 179 places, 152 transitions, 1639 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:29:29,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 165 transitions, 2005 flow [2024-06-28 03:29:29,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 165 transitions, 1909 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:29,231 INFO L231 Difference]: Finished difference. Result has 179 places, 152 transitions, 1651 flow [2024-06-28 03:29:29,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1651, PETRI_PLACES=179, PETRI_TRANSITIONS=152} [2024-06-28 03:29:29,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:29:29,232 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 152 transitions, 1651 flow [2024-06-28 03:29:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:29,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:29,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:29:29,232 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:29,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1496209114, now seen corresponding path program 5 times [2024-06-28 03:29:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562632927] [2024-06-28 03:29:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:29,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562632927] [2024-06-28 03:29:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562632927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:29,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:29,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767778644] [2024-06-28 03:29:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:29,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:29,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:29,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:29,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 152 transitions, 1651 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:29,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:29,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:29,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:30,095 INFO L124 PetriNetUnfolderBase]: 422/757 cut-off events. [2024-06-28 03:29:30,095 INFO L125 PetriNetUnfolderBase]: For 36556/36556 co-relation queries the response was YES. [2024-06-28 03:29:30,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 757 events. 422/757 cut-off events. For 36556/36556 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3460 event pairs, 67 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 5221. Up to 632 conditions per place. [2024-06-28 03:29:30,100 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 41 changer transitions 0/169 dead transitions. [2024-06-28 03:29:30,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 169 transitions, 2073 flow [2024-06-28 03:29:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:29:30,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:29:30,100 INFO L175 Difference]: Start difference. First operand has 179 places, 152 transitions, 1651 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:29:30,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 169 transitions, 2073 flow [2024-06-28 03:29:30,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 169 transitions, 1921 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:29:30,173 INFO L231 Difference]: Finished difference. Result has 178 places, 154 transitions, 1636 flow [2024-06-28 03:29:30,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=178, PETRI_TRANSITIONS=154} [2024-06-28 03:29:30,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 03:29:30,174 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 154 transitions, 1636 flow [2024-06-28 03:29:30,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:30,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:30,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:30,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:29:30,175 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:30,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:30,175 INFO L85 PathProgramCache]: Analyzing trace with hash -263666040, now seen corresponding path program 6 times [2024-06-28 03:29:30,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:30,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398380343] [2024-06-28 03:29:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:30,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398380343] [2024-06-28 03:29:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398380343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:30,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:30,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869294069] [2024-06-28 03:29:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:30,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:30,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:30,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 154 transitions, 1636 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:30,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:30,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:30,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:31,017 INFO L124 PetriNetUnfolderBase]: 448/799 cut-off events. [2024-06-28 03:29:31,017 INFO L125 PetriNetUnfolderBase]: For 40053/40053 co-relation queries the response was YES. [2024-06-28 03:29:31,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 799 events. 448/799 cut-off events. For 40053/40053 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3684 event pairs, 59 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5676. Up to 539 conditions per place. [2024-06-28 03:29:31,024 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 75 changer transitions 0/176 dead transitions. [2024-06-28 03:29:31,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 176 transitions, 2348 flow [2024-06-28 03:29:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:29:31,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:29:31,025 INFO L175 Difference]: Start difference. First operand has 178 places, 154 transitions, 1636 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:29:31,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 176 transitions, 2348 flow [2024-06-28 03:29:31,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 176 transitions, 2251 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:31,095 INFO L231 Difference]: Finished difference. Result has 180 places, 160 transitions, 1833 flow [2024-06-28 03:29:31,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1833, PETRI_PLACES=180, PETRI_TRANSITIONS=160} [2024-06-28 03:29:31,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-28 03:29:31,095 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 160 transitions, 1833 flow [2024-06-28 03:29:31,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:31,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:31,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:31,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:29:31,096 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:31,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1611679774, now seen corresponding path program 7 times [2024-06-28 03:29:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:31,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664100950] [2024-06-28 03:29:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:31,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:31,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:31,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664100950] [2024-06-28 03:29:31,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664100950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:31,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:31,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96515692] [2024-06-28 03:29:31,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:31,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:31,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:31,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 160 transitions, 1833 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:31,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:31,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:31,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:31,921 INFO L124 PetriNetUnfolderBase]: 444/793 cut-off events. [2024-06-28 03:29:31,921 INFO L125 PetriNetUnfolderBase]: For 40072/40072 co-relation queries the response was YES. [2024-06-28 03:29:31,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5764 conditions, 793 events. 444/793 cut-off events. For 40072/40072 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3660 event pairs, 58 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 5682. Up to 536 conditions per place. [2024-06-28 03:29:31,927 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 83 changer transitions 0/175 dead transitions. [2024-06-28 03:29:31,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 175 transitions, 2321 flow [2024-06-28 03:29:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:29:31,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:29:31,928 INFO L175 Difference]: Start difference. First operand has 180 places, 160 transitions, 1833 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:29:31,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 175 transitions, 2321 flow [2024-06-28 03:29:32,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 175 transitions, 2192 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:32,007 INFO L231 Difference]: Finished difference. Result has 184 places, 160 transitions, 1880 flow [2024-06-28 03:29:32,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1880, PETRI_PLACES=184, PETRI_TRANSITIONS=160} [2024-06-28 03:29:32,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 03:29:32,008 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 160 transitions, 1880 flow [2024-06-28 03:29:32,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:32,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:32,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:32,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:29:32,009 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:32,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1611680022, now seen corresponding path program 2 times [2024-06-28 03:29:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:32,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824234297] [2024-06-28 03:29:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:32,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824234297] [2024-06-28 03:29:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824234297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:32,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:32,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891733166] [2024-06-28 03:29:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:32,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:32,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:32,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:32,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:32,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 160 transitions, 1880 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:32,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:32,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:32,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:32,847 INFO L124 PetriNetUnfolderBase]: 447/798 cut-off events. [2024-06-28 03:29:32,847 INFO L125 PetriNetUnfolderBase]: For 38528/38528 co-relation queries the response was YES. [2024-06-28 03:29:32,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 798 events. 447/798 cut-off events. For 38528/38528 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3694 event pairs, 114 based on Foata normal form. 1/799 useless extension candidates. Maximal degree in co-relation 5790. Up to 750 conditions per place. [2024-06-28 03:29:32,853 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 26 changer transitions 0/172 dead transitions. [2024-06-28 03:29:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 2268 flow [2024-06-28 03:29:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 03:29:32,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:29:32,854 INFO L175 Difference]: Start difference. First operand has 184 places, 160 transitions, 1880 flow. Second operand 9 states and 90 transitions. [2024-06-28 03:29:32,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 2268 flow [2024-06-28 03:29:32,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 172 transitions, 2121 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:32,929 INFO L231 Difference]: Finished difference. Result has 185 places, 162 transitions, 1821 flow [2024-06-28 03:29:32,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1821, PETRI_PLACES=185, PETRI_TRANSITIONS=162} [2024-06-28 03:29:32,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-28 03:29:32,929 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 162 transitions, 1821 flow [2024-06-28 03:29:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:32,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:32,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:32,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:29:32,930 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:32,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:32,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1611495324, now seen corresponding path program 9 times [2024-06-28 03:29:32,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:32,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147611542] [2024-06-28 03:29:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:32,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:33,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147611542] [2024-06-28 03:29:33,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147611542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:33,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883150077] [2024-06-28 03:29:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:33,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:33,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:33,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 162 transitions, 1821 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:33,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:33,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:33,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:33,956 INFO L124 PetriNetUnfolderBase]: 406/757 cut-off events. [2024-06-28 03:29:33,956 INFO L125 PetriNetUnfolderBase]: For 39701/39705 co-relation queries the response was YES. [2024-06-28 03:29:33,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 757 events. 406/757 cut-off events. For 39701/39705 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3660 event pairs, 57 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 5532. Up to 589 conditions per place. [2024-06-28 03:29:33,965 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 115 selfloop transitions, 39 changer transitions 0/175 dead transitions. [2024-06-28 03:29:33,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 175 transitions, 2189 flow [2024-06-28 03:29:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:29:33,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:29:33,967 INFO L175 Difference]: Start difference. First operand has 185 places, 162 transitions, 1821 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:29:33,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 175 transitions, 2189 flow [2024-06-28 03:29:34,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 175 transitions, 2121 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:34,048 INFO L231 Difference]: Finished difference. Result has 186 places, 163 transitions, 1863 flow [2024-06-28 03:29:34,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1863, PETRI_PLACES=186, PETRI_TRANSITIONS=163} [2024-06-28 03:29:34,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 03:29:34,048 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 163 transitions, 1863 flow [2024-06-28 03:29:34,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:34,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:34,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:34,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:29:34,049 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:34,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1611500284, now seen corresponding path program 8 times [2024-06-28 03:29:34,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:34,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875313574] [2024-06-28 03:29:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:34,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:34,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:34,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875313574] [2024-06-28 03:29:34,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875313574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:34,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:34,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:34,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907217492] [2024-06-28 03:29:34,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:34,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:34,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:34,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 163 transitions, 1863 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:34,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:34,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:34,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:34,877 INFO L124 PetriNetUnfolderBase]: 452/808 cut-off events. [2024-06-28 03:29:34,877 INFO L125 PetriNetUnfolderBase]: For 38875/38875 co-relation queries the response was YES. [2024-06-28 03:29:34,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5835 conditions, 808 events. 452/808 cut-off events. For 38875/38875 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3767 event pairs, 74 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5751. Up to 552 conditions per place. [2024-06-28 03:29:34,883 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 71 changer transitions 0/180 dead transitions. [2024-06-28 03:29:34,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 180 transitions, 2407 flow [2024-06-28 03:29:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:29:34,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:29:34,885 INFO L175 Difference]: Start difference. First operand has 186 places, 163 transitions, 1863 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:29:34,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 180 transitions, 2407 flow [2024-06-28 03:29:34,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 180 transitions, 2307 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:34,957 INFO L231 Difference]: Finished difference. Result has 189 places, 165 transitions, 1961 flow [2024-06-28 03:29:34,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1961, PETRI_PLACES=189, PETRI_TRANSITIONS=165} [2024-06-28 03:29:34,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-28 03:29:34,958 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 165 transitions, 1961 flow [2024-06-28 03:29:34,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:34,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:34,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:34,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:29:34,958 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:34,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:34,959 INFO L85 PathProgramCache]: Analyzing trace with hash 36093658, now seen corresponding path program 9 times [2024-06-28 03:29:34,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:34,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477855795] [2024-06-28 03:29:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:34,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477855795] [2024-06-28 03:29:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477855795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583614106] [2024-06-28 03:29:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:35,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:35,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:35,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:35,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 165 transitions, 1961 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:35,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:35,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:35,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:35,791 INFO L124 PetriNetUnfolderBase]: 478/851 cut-off events. [2024-06-28 03:29:35,791 INFO L125 PetriNetUnfolderBase]: For 43845/43845 co-relation queries the response was YES. [2024-06-28 03:29:35,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6379 conditions, 851 events. 478/851 cut-off events. For 43845/43845 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4022 event pairs, 70 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 6294. Up to 498 conditions per place. [2024-06-28 03:29:35,800 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 93 changer transitions 0/189 dead transitions. [2024-06-28 03:29:35,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 189 transitions, 2841 flow [2024-06-28 03:29:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:29:35,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:29:35,802 INFO L175 Difference]: Start difference. First operand has 189 places, 165 transitions, 1961 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:29:35,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 189 transitions, 2841 flow [2024-06-28 03:29:35,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 189 transitions, 2702 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:35,891 INFO L231 Difference]: Finished difference. Result has 191 places, 173 transitions, 2199 flow [2024-06-28 03:29:35,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2199, PETRI_PLACES=191, PETRI_TRANSITIONS=173} [2024-06-28 03:29:35,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 03:29:35,891 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 173 transitions, 2199 flow [2024-06-28 03:29:35,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:35,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:35,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:29:35,892 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:35,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 36093906, now seen corresponding path program 3 times [2024-06-28 03:29:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387087323] [2024-06-28 03:29:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387087323] [2024-06-28 03:29:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387087323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:36,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:36,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774797914] [2024-06-28 03:29:36,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:36,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:36,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:36,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:36,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 173 transitions, 2199 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:36,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:36,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:36,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:36,670 INFO L124 PetriNetUnfolderBase]: 486/863 cut-off events. [2024-06-28 03:29:36,670 INFO L125 PetriNetUnfolderBase]: For 44489/44489 co-relation queries the response was YES. [2024-06-28 03:29:36,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6566 conditions, 863 events. 486/863 cut-off events. For 44489/44489 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4095 event pairs, 123 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 6481. Up to 772 conditions per place. [2024-06-28 03:29:36,676 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 40 changer transitions 0/189 dead transitions. [2024-06-28 03:29:36,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 189 transitions, 2851 flow [2024-06-28 03:29:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:29:36,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:29:36,677 INFO L175 Difference]: Start difference. First operand has 191 places, 173 transitions, 2199 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:29:36,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 189 transitions, 2851 flow [2024-06-28 03:29:36,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 189 transitions, 2744 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 03:29:36,764 INFO L231 Difference]: Finished difference. Result has 197 places, 179 transitions, 2253 flow [2024-06-28 03:29:36,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2253, PETRI_PLACES=197, PETRI_TRANSITIONS=179} [2024-06-28 03:29:36,765 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 03:29:36,765 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 179 transitions, 2253 flow [2024-06-28 03:29:36,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:36,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:36,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:36,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:29:36,766 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:36,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash -91770796, now seen corresponding path program 10 times [2024-06-28 03:29:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816215139] [2024-06-28 03:29:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:37,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816215139] [2024-06-28 03:29:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816215139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:37,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214292078] [2024-06-28 03:29:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:37,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:37,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 179 transitions, 2253 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:37,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:37,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:37,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:37,550 INFO L124 PetriNetUnfolderBase]: 482/857 cut-off events. [2024-06-28 03:29:37,551 INFO L125 PetriNetUnfolderBase]: For 44642/44642 co-relation queries the response was YES. [2024-06-28 03:29:37,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6462 conditions, 857 events. 482/857 cut-off events. For 44642/44642 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4065 event pairs, 67 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 6375. Up to 508 conditions per place. [2024-06-28 03:29:37,557 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 94 changer transitions 0/193 dead transitions. [2024-06-28 03:29:37,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 193 transitions, 2869 flow [2024-06-28 03:29:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:29:37,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:29:37,558 INFO L175 Difference]: Start difference. First operand has 197 places, 179 transitions, 2253 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:29:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 193 transitions, 2869 flow [2024-06-28 03:29:37,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 193 transitions, 2797 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:29:37,639 INFO L231 Difference]: Finished difference. Result has 202 places, 179 transitions, 2374 flow [2024-06-28 03:29:37,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2374, PETRI_PLACES=202, PETRI_TRANSITIONS=179} [2024-06-28 03:29:37,640 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-28 03:29:37,640 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 179 transitions, 2374 flow [2024-06-28 03:29:37,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:37,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:37,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:29:37,640 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:37,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1838960650, now seen corresponding path program 11 times [2024-06-28 03:29:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879218397] [2024-06-28 03:29:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:38,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:38,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879218397] [2024-06-28 03:29:38,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879218397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:38,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743567524] [2024-06-28 03:29:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:38,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:38,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:38,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 179 transitions, 2374 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:38,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:38,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:38,427 INFO L124 PetriNetUnfolderBase]: 488/867 cut-off events. [2024-06-28 03:29:38,427 INFO L125 PetriNetUnfolderBase]: For 46978/46978 co-relation queries the response was YES. [2024-06-28 03:29:38,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 867 events. 488/867 cut-off events. For 46978/46978 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4104 event pairs, 91 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6673. Up to 514 conditions per place. [2024-06-28 03:29:38,433 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 86 changer transitions 0/197 dead transitions. [2024-06-28 03:29:38,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 197 transitions, 3156 flow [2024-06-28 03:29:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:29:38,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:29:38,434 INFO L175 Difference]: Start difference. First operand has 202 places, 179 transitions, 2374 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:29:38,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 197 transitions, 3156 flow [2024-06-28 03:29:38,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 2966 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:38,524 INFO L231 Difference]: Finished difference. Result has 204 places, 181 transitions, 2411 flow [2024-06-28 03:29:38,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2411, PETRI_PLACES=204, PETRI_TRANSITIONS=181} [2024-06-28 03:29:38,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-28 03:29:38,525 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 181 transitions, 2411 flow [2024-06-28 03:29:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:38,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:38,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:29:38,525 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:38,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1610828860, now seen corresponding path program 12 times [2024-06-28 03:29:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858979831] [2024-06-28 03:29:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:39,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858979831] [2024-06-28 03:29:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858979831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:39,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801566488] [2024-06-28 03:29:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:39,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:39,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:39,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 181 transitions, 2411 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:39,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:39,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:39,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:39,307 INFO L124 PetriNetUnfolderBase]: 484/861 cut-off events. [2024-06-28 03:29:39,307 INFO L125 PetriNetUnfolderBase]: For 46157/46157 co-relation queries the response was YES. [2024-06-28 03:29:39,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6632 conditions, 861 events. 484/861 cut-off events. For 46157/46157 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4080 event pairs, 64 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 6542. Up to 511 conditions per place. [2024-06-28 03:29:39,313 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 110 changer transitions 0/194 dead transitions. [2024-06-28 03:29:39,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 194 transitions, 2937 flow [2024-06-28 03:29:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:29:39,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:29:39,314 INFO L175 Difference]: Start difference. First operand has 204 places, 181 transitions, 2411 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:29:39,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 194 transitions, 2937 flow [2024-06-28 03:29:39,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 194 transitions, 2592 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:39,413 INFO L231 Difference]: Finished difference. Result has 205 places, 181 transitions, 2291 flow [2024-06-28 03:29:39,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2291, PETRI_PLACES=205, PETRI_TRANSITIONS=181} [2024-06-28 03:29:39,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 03:29:39,414 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 181 transitions, 2291 flow [2024-06-28 03:29:39,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:39,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:39,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:39,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:29:39,414 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:39,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1602488372, now seen corresponding path program 4 times [2024-06-28 03:29:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672414692] [2024-06-28 03:29:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672414692] [2024-06-28 03:29:40,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672414692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:40,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:40,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:40,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554414851] [2024-06-28 03:29:40,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:40,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:40,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:40,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:40,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:40,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 181 transitions, 2291 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:40,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:40,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:40,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:40,449 INFO L124 PetriNetUnfolderBase]: 487/866 cut-off events. [2024-06-28 03:29:40,449 INFO L125 PetriNetUnfolderBase]: For 45528/45528 co-relation queries the response was YES. [2024-06-28 03:29:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 866 events. 487/866 cut-off events. For 45528/45528 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4116 event pairs, 162 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6440. Up to 838 conditions per place. [2024-06-28 03:29:40,456 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 16 changer transitions 0/191 dead transitions. [2024-06-28 03:29:40,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 191 transitions, 2715 flow [2024-06-28 03:29:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-28 03:29:40,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 03:29:40,457 INFO L175 Difference]: Start difference. First operand has 205 places, 181 transitions, 2291 flow. Second operand 10 states and 93 transitions. [2024-06-28 03:29:40,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 191 transitions, 2715 flow [2024-06-28 03:29:40,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 191 transitions, 2479 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:40,565 INFO L231 Difference]: Finished difference. Result has 206 places, 183 transitions, 2124 flow [2024-06-28 03:29:40,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2124, PETRI_PLACES=206, PETRI_TRANSITIONS=183} [2024-06-28 03:29:40,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-28 03:29:40,565 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 183 transitions, 2124 flow [2024-06-28 03:29:40,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:40,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:40,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:29:40,566 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:40,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1838967160, now seen corresponding path program 13 times [2024-06-28 03:29:40,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:40,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991965180] [2024-06-28 03:29:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991965180] [2024-06-28 03:29:41,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991965180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:41,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915270898] [2024-06-28 03:29:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:41,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:41,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 183 transitions, 2124 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:41,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:41,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:41,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:41,381 INFO L124 PetriNetUnfolderBase]: 493/876 cut-off events. [2024-06-28 03:29:41,381 INFO L125 PetriNetUnfolderBase]: For 48149/48149 co-relation queries the response was YES. [2024-06-28 03:29:41,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 876 events. 493/876 cut-off events. For 48149/48149 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4184 event pairs, 90 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 6287. Up to 522 conditions per place. [2024-06-28 03:29:41,387 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 87 changer transitions 0/200 dead transitions. [2024-06-28 03:29:41,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 200 transitions, 2816 flow [2024-06-28 03:29:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:29:41,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:29:41,388 INFO L175 Difference]: Start difference. First operand has 206 places, 183 transitions, 2124 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:29:41,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 200 transitions, 2816 flow [2024-06-28 03:29:41,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 200 transitions, 2767 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:41,486 INFO L231 Difference]: Finished difference. Result has 207 places, 185 transitions, 2294 flow [2024-06-28 03:29:41,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2294, PETRI_PLACES=207, PETRI_TRANSITIONS=185} [2024-06-28 03:29:41,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 03:29:41,486 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 185 transitions, 2294 flow [2024-06-28 03:29:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:41,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:41,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:29:41,486 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:41,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash 59867646, now seen corresponding path program 5 times [2024-06-28 03:29:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143329832] [2024-06-28 03:29:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:42,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:42,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143329832] [2024-06-28 03:29:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143329832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:42,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:42,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293058384] [2024-06-28 03:29:42,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:42,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:42,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:42,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:42,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 185 transitions, 2294 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:42,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:42,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:42,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:42,288 INFO L124 PetriNetUnfolderBase]: 491/873 cut-off events. [2024-06-28 03:29:42,288 INFO L125 PetriNetUnfolderBase]: For 47913/47913 co-relation queries the response was YES. [2024-06-28 03:29:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6514 conditions, 873 events. 491/873 cut-off events. For 47913/47913 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4158 event pairs, 125 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 6422. Up to 782 conditions per place. [2024-06-28 03:29:42,294 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 45 changer transitions 0/194 dead transitions. [2024-06-28 03:29:42,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 194 transitions, 2802 flow [2024-06-28 03:29:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:29:42,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-28 03:29:42,295 INFO L175 Difference]: Start difference. First operand has 207 places, 185 transitions, 2294 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:29:42,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 194 transitions, 2802 flow [2024-06-28 03:29:42,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 194 transitions, 2591 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:42,391 INFO L231 Difference]: Finished difference. Result has 210 places, 185 transitions, 2178 flow [2024-06-28 03:29:42,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2178, PETRI_PLACES=210, PETRI_TRANSITIONS=185} [2024-06-28 03:29:42,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-28 03:29:42,392 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 185 transitions, 2178 flow [2024-06-28 03:29:42,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:42,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:42,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:42,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:29:42,392 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:42,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:42,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1838960402, now seen corresponding path program 6 times [2024-06-28 03:29:42,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:42,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751052044] [2024-06-28 03:29:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751052044] [2024-06-28 03:29:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751052044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607945484] [2024-06-28 03:29:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:43,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:43,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 185 transitions, 2178 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:43,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:43,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:43,205 INFO L124 PetriNetUnfolderBase]: 489/870 cut-off events. [2024-06-28 03:29:43,205 INFO L125 PetriNetUnfolderBase]: For 47470/47470 co-relation queries the response was YES. [2024-06-28 03:29:43,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6306 conditions, 870 events. 489/870 cut-off events. For 47470/47470 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4154 event pairs, 125 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 6213. Up to 780 conditions per place. [2024-06-28 03:29:43,212 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-28 03:29:43,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 193 transitions, 2578 flow [2024-06-28 03:29:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:29:43,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-28 03:29:43,213 INFO L175 Difference]: Start difference. First operand has 210 places, 185 transitions, 2178 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:29:43,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 193 transitions, 2578 flow [2024-06-28 03:29:43,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 193 transitions, 2483 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:43,309 INFO L231 Difference]: Finished difference. Result has 212 places, 185 transitions, 2168 flow [2024-06-28 03:29:43,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2168, PETRI_PLACES=212, PETRI_TRANSITIONS=185} [2024-06-28 03:29:43,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 03:29:43,310 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 185 transitions, 2168 flow [2024-06-28 03:29:43,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:43,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:43,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:43,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:29:43,310 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:43,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1839145100, now seen corresponding path program 10 times [2024-06-28 03:29:43,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074769596] [2024-06-28 03:29:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074769596] [2024-06-28 03:29:43,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074769596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:43,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:43,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383022930] [2024-06-28 03:29:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:44,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:29:44,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 185 transitions, 2168 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:44,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:44,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:29:44,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:44,219 INFO L124 PetriNetUnfolderBase]: 434/805 cut-off events. [2024-06-28 03:29:44,219 INFO L125 PetriNetUnfolderBase]: For 48191/48199 co-relation queries the response was YES. [2024-06-28 03:29:44,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5928 conditions, 805 events. 434/805 cut-off events. For 48191/48199 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3971 event pairs, 62 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 5834. Up to 629 conditions per place. [2024-06-28 03:29:44,225 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 134 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-06-28 03:29:44,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 195 transitions, 2546 flow [2024-06-28 03:29:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:29:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:29:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:29:44,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:29:44,226 INFO L175 Difference]: Start difference. First operand has 212 places, 185 transitions, 2168 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:29:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 195 transitions, 2546 flow [2024-06-28 03:29:44,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2419 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:44,323 INFO L231 Difference]: Finished difference. Result has 211 places, 185 transitions, 2125 flow [2024-06-28 03:29:44,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2125, PETRI_PLACES=211, PETRI_TRANSITIONS=185} [2024-06-28 03:29:44,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 03:29:44,323 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 185 transitions, 2125 flow [2024-06-28 03:29:44,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:44,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:44,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:29:44,324 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:44,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1839140140, now seen corresponding path program 14 times [2024-06-28 03:29:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:44,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102500911] [2024-06-28 03:29:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:44,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102500911] [2024-06-28 03:29:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102500911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:44,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:44,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:44,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508402023] [2024-06-28 03:29:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:44,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:44,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:44,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 185 transitions, 2125 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:44,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:44,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:44,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:45,155 INFO L124 PetriNetUnfolderBase]: 482/859 cut-off events. [2024-06-28 03:29:45,155 INFO L125 PetriNetUnfolderBase]: For 46297/46297 co-relation queries the response was YES. [2024-06-28 03:29:45,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6055 conditions, 859 events. 482/859 cut-off events. For 46297/46297 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4081 event pairs, 91 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 5960. Up to 508 conditions per place. [2024-06-28 03:29:45,162 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 90 changer transitions 0/198 dead transitions. [2024-06-28 03:29:45,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 198 transitions, 2671 flow [2024-06-28 03:29:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:29:45,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:29:45,163 INFO L175 Difference]: Start difference. First operand has 211 places, 185 transitions, 2125 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:29:45,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 198 transitions, 2671 flow [2024-06-28 03:29:45,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 198 transitions, 2505 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:45,262 INFO L231 Difference]: Finished difference. Result has 213 places, 185 transitions, 2144 flow [2024-06-28 03:29:45,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2144, PETRI_PLACES=213, PETRI_TRANSITIONS=185} [2024-06-28 03:29:45,262 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 03:29:45,263 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 185 transitions, 2144 flow [2024-06-28 03:29:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:45,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:45,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:29:45,263 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:45,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1602477460, now seen corresponding path program 1 times [2024-06-28 03:29:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241229345] [2024-06-28 03:29:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:46,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:46,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241229345] [2024-06-28 03:29:46,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241229345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:46,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:46,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272455671] [2024-06-28 03:29:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:46,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:46,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:46,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 185 transitions, 2144 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:46,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:46,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:46,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:46,451 INFO L124 PetriNetUnfolderBase]: 479/854 cut-off events. [2024-06-28 03:29:46,451 INFO L125 PetriNetUnfolderBase]: For 44769/44769 co-relation queries the response was YES. [2024-06-28 03:29:46,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5967 conditions, 854 events. 479/854 cut-off events. For 44769/44769 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4056 event pairs, 161 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5871. Up to 820 conditions per place. [2024-06-28 03:29:46,457 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 16 changer transitions 0/195 dead transitions. [2024-06-28 03:29:46,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 195 transitions, 2552 flow [2024-06-28 03:29:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-28 03:29:46,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-28 03:29:46,458 INFO L175 Difference]: Start difference. First operand has 213 places, 185 transitions, 2144 flow. Second operand 10 states and 94 transitions. [2024-06-28 03:29:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 195 transitions, 2552 flow [2024-06-28 03:29:46,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 195 transitions, 2330 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:29:46,548 INFO L231 Difference]: Finished difference. Result has 213 places, 185 transitions, 1958 flow [2024-06-28 03:29:46,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1958, PETRI_PLACES=213, PETRI_TRANSITIONS=185} [2024-06-28 03:29:46,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 03:29:46,549 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 185 transitions, 1958 flow [2024-06-28 03:29:46,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:46,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:46,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:46,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:29:46,549 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:46,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:46,549 INFO L85 PathProgramCache]: Analyzing trace with hash -64279874, now seen corresponding path program 1 times [2024-06-28 03:29:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:46,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380982795] [2024-06-28 03:29:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:46,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380982795] [2024-06-28 03:29:47,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380982795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:47,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:47,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:47,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871076635] [2024-06-28 03:29:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:47,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:47,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:47,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 185 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:47,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:47,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:47,592 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-06-28 03:29:47,593 INFO L125 PetriNetUnfolderBase]: For 45823/45823 co-relation queries the response was YES. [2024-06-28 03:29:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5767 conditions, 862 events. 483/862 cut-off events. For 45823/45823 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4098 event pairs, 76 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5671. Up to 742 conditions per place. [2024-06-28 03:29:47,599 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 27 changer transitions 0/204 dead transitions. [2024-06-28 03:29:47,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 204 transitions, 2422 flow [2024-06-28 03:29:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:29:47,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:29:47,599 INFO L175 Difference]: Start difference. First operand has 213 places, 185 transitions, 1958 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:29:47,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 204 transitions, 2422 flow [2024-06-28 03:29:47,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 204 transitions, 2382 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:47,706 INFO L231 Difference]: Finished difference. Result has 215 places, 186 transitions, 1994 flow [2024-06-28 03:29:47,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1994, PETRI_PLACES=215, PETRI_TRANSITIONS=186} [2024-06-28 03:29:47,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 03:29:47,707 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 186 transitions, 1994 flow [2024-06-28 03:29:47,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:47,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:47,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:47,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:29:47,707 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:47,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1717212520, now seen corresponding path program 2 times [2024-06-28 03:29:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:47,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449358565] [2024-06-28 03:29:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:47,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:48,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449358565] [2024-06-28 03:29:48,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449358565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:48,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:48,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913102395] [2024-06-28 03:29:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:48,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:48,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 186 transitions, 1994 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:48,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:48,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:48,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:48,939 INFO L124 PetriNetUnfolderBase]: 487/870 cut-off events. [2024-06-28 03:29:48,939 INFO L125 PetriNetUnfolderBase]: For 47046/47046 co-relation queries the response was YES. [2024-06-28 03:29:48,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5870 conditions, 870 events. 487/870 cut-off events. For 47046/47046 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4165 event pairs, 111 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 5773. Up to 785 conditions per place. [2024-06-28 03:29:48,945 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 25 changer transitions 0/205 dead transitions. [2024-06-28 03:29:48,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 205 transitions, 2464 flow [2024-06-28 03:29:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:29:48,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:29:48,946 INFO L175 Difference]: Start difference. First operand has 215 places, 186 transitions, 1994 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:29:48,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 205 transitions, 2464 flow [2024-06-28 03:29:49,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 205 transitions, 2398 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:49,053 INFO L231 Difference]: Finished difference. Result has 217 places, 187 transitions, 2002 flow [2024-06-28 03:29:49,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=217, PETRI_TRANSITIONS=187} [2024-06-28 03:29:49,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-28 03:29:49,053 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 187 transitions, 2002 flow [2024-06-28 03:29:49,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:49,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:49,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:29:49,054 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:49,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1659293050, now seen corresponding path program 3 times [2024-06-28 03:29:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963552483] [2024-06-28 03:29:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:49,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963552483] [2024-06-28 03:29:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963552483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351306690] [2024-06-28 03:29:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:49,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:49,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:49,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:49,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 187 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:49,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:49,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:49,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:50,205 INFO L124 PetriNetUnfolderBase]: 498/891 cut-off events. [2024-06-28 03:29:50,206 INFO L125 PetriNetUnfolderBase]: For 53075/53075 co-relation queries the response was YES. [2024-06-28 03:29:50,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 891 events. 498/891 cut-off events. For 53075/53075 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4307 event pairs, 108 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 6022. Up to 785 conditions per place. [2024-06-28 03:29:50,213 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 31 changer transitions 0/207 dead transitions. [2024-06-28 03:29:50,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 207 transitions, 2618 flow [2024-06-28 03:29:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:29:50,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:29:50,214 INFO L175 Difference]: Start difference. First operand has 217 places, 187 transitions, 2002 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:29:50,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 207 transitions, 2618 flow [2024-06-28 03:29:50,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 207 transitions, 2554 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:50,341 INFO L231 Difference]: Finished difference. Result has 219 places, 189 transitions, 2046 flow [2024-06-28 03:29:50,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2046, PETRI_PLACES=219, PETRI_TRANSITIONS=189} [2024-06-28 03:29:50,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 03:29:50,342 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 189 transitions, 2046 flow [2024-06-28 03:29:50,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:50,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:50,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:29:50,343 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:50,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1658990645, now seen corresponding path program 3 times [2024-06-28 03:29:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635072068] [2024-06-28 03:29:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:50,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:51,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:51,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635072068] [2024-06-28 03:29:51,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635072068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:51,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:51,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:51,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875723385] [2024-06-28 03:29:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:51,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:51,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:51,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:51,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:51,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:51,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 189 transitions, 2046 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:51,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:51,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:51,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:51,387 INFO L124 PetriNetUnfolderBase]: 496/888 cut-off events. [2024-06-28 03:29:51,387 INFO L125 PetriNetUnfolderBase]: For 51168/51168 co-relation queries the response was YES. [2024-06-28 03:29:51,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6060 conditions, 888 events. 496/888 cut-off events. For 51168/51168 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4282 event pairs, 109 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 5961. Up to 798 conditions per place. [2024-06-28 03:29:51,394 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 34 changer transitions 0/206 dead transitions. [2024-06-28 03:29:51,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 206 transitions, 2508 flow [2024-06-28 03:29:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:29:51,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:29:51,395 INFO L175 Difference]: Start difference. First operand has 219 places, 189 transitions, 2046 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:29:51,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 206 transitions, 2508 flow [2024-06-28 03:29:51,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 206 transitions, 2432 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:51,505 INFO L231 Difference]: Finished difference. Result has 223 places, 189 transitions, 2046 flow [2024-06-28 03:29:51,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2046, PETRI_PLACES=223, PETRI_TRANSITIONS=189} [2024-06-28 03:29:51,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-28 03:29:51,505 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 189 transitions, 2046 flow [2024-06-28 03:29:51,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:51,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:51,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:51,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:29:51,506 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:51,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1658995450, now seen corresponding path program 4 times [2024-06-28 03:29:51,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:51,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623246826] [2024-06-28 03:29:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:51,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623246826] [2024-06-28 03:29:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623246826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007538482] [2024-06-28 03:29:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:52,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:52,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:52,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 189 transitions, 2046 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:52,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:52,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:52,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:52,750 INFO L124 PetriNetUnfolderBase]: 493/883 cut-off events. [2024-06-28 03:29:52,751 INFO L125 PetriNetUnfolderBase]: For 50406/50406 co-relation queries the response was YES. [2024-06-28 03:29:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 883 events. 493/883 cut-off events. For 50406/50406 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4255 event pairs, 109 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5840. Up to 796 conditions per place. [2024-06-28 03:29:52,757 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 31 changer transitions 0/206 dead transitions. [2024-06-28 03:29:52,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 206 transitions, 2504 flow [2024-06-28 03:29:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:29:52,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:29:52,758 INFO L175 Difference]: Start difference. First operand has 223 places, 189 transitions, 2046 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:29:52,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 206 transitions, 2504 flow [2024-06-28 03:29:52,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 206 transitions, 2346 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:29:52,875 INFO L231 Difference]: Finished difference. Result has 222 places, 189 transitions, 1955 flow [2024-06-28 03:29:52,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1955, PETRI_PLACES=222, PETRI_TRANSITIONS=189} [2024-06-28 03:29:52,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 03:29:52,876 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 189 transitions, 1955 flow [2024-06-28 03:29:52,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:52,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:52,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:29:52,876 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:52,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1363169956, now seen corresponding path program 1 times [2024-06-28 03:29:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626751722] [2024-06-28 03:29:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:53,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626751722] [2024-06-28 03:29:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626751722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:53,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:53,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27050050] [2024-06-28 03:29:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:53,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:53,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 189 transitions, 1955 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:53,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:53,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:53,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:53,788 INFO L124 PetriNetUnfolderBase]: 499/893 cut-off events. [2024-06-28 03:29:53,788 INFO L125 PetriNetUnfolderBase]: For 51532/51532 co-relation queries the response was YES. [2024-06-28 03:29:53,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 893 events. 499/893 cut-off events. For 51532/51532 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4319 event pairs, 86 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 5840. Up to 804 conditions per place. [2024-06-28 03:29:53,794 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 176 selfloop transitions, 32 changer transitions 0/210 dead transitions. [2024-06-28 03:29:53,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 210 transitions, 2469 flow [2024-06-28 03:29:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:29:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:29:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:29:53,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:29:53,796 INFO L175 Difference]: Start difference. First operand has 222 places, 189 transitions, 1955 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:29:53,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 210 transitions, 2469 flow [2024-06-28 03:29:53,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 210 transitions, 2404 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:53,925 INFO L231 Difference]: Finished difference. Result has 224 places, 191 transitions, 1999 flow [2024-06-28 03:29:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1999, PETRI_PLACES=224, PETRI_TRANSITIONS=191} [2024-06-28 03:29:53,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 03:29:53,925 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 191 transitions, 1999 flow [2024-06-28 03:29:53,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:53,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:53,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:29:53,926 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:53,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1093795398, now seen corresponding path program 5 times [2024-06-28 03:29:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067823644] [2024-06-28 03:29:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:54,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:54,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067823644] [2024-06-28 03:29:54,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067823644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:54,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:54,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267007406] [2024-06-28 03:29:54,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:54,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:54,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:54,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 191 transitions, 1999 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:54,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:54,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:55,074 INFO L124 PetriNetUnfolderBase]: 503/901 cut-off events. [2024-06-28 03:29:55,074 INFO L125 PetriNetUnfolderBase]: For 53314/53314 co-relation queries the response was YES. [2024-06-28 03:29:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6059 conditions, 901 events. 503/901 cut-off events. For 53314/53314 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4382 event pairs, 86 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 5956. Up to 816 conditions per place. [2024-06-28 03:29:55,080 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 24 changer transitions 0/209 dead transitions. [2024-06-28 03:29:55,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 209 transitions, 2479 flow [2024-06-28 03:29:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:29:55,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:29:55,081 INFO L175 Difference]: Start difference. First operand has 224 places, 191 transitions, 1999 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:29:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 209 transitions, 2479 flow [2024-06-28 03:29:55,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 209 transitions, 2386 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:55,200 INFO L231 Difference]: Finished difference. Result has 225 places, 192 transitions, 1982 flow [2024-06-28 03:29:55,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1982, PETRI_PLACES=225, PETRI_TRANSITIONS=192} [2024-06-28 03:29:55,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 03:29:55,201 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 192 transitions, 1982 flow [2024-06-28 03:29:55,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:55,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:55,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:55,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:29:55,201 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:55,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1970004674, now seen corresponding path program 6 times [2024-06-28 03:29:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729866328] [2024-06-28 03:29:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:55,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729866328] [2024-06-28 03:29:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729866328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:56,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:56,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625132692] [2024-06-28 03:29:56,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:56,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:56,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:56,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:56,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:56,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 192 transitions, 1982 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:56,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:56,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:56,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:56,425 INFO L124 PetriNetUnfolderBase]: 514/922 cut-off events. [2024-06-28 03:29:56,425 INFO L125 PetriNetUnfolderBase]: For 59704/59704 co-relation queries the response was YES. [2024-06-28 03:29:56,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 922 events. 514/922 cut-off events. For 59704/59704 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4531 event pairs, 87 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6210. Up to 816 conditions per place. [2024-06-28 03:29:56,434 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-28 03:29:56,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 211 transitions, 2622 flow [2024-06-28 03:29:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:56,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:29:56,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:29:56,435 INFO L175 Difference]: Start difference. First operand has 225 places, 192 transitions, 1982 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:29:56,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 211 transitions, 2622 flow [2024-06-28 03:29:56,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 211 transitions, 2556 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:56,579 INFO L231 Difference]: Finished difference. Result has 227 places, 194 transitions, 2030 flow [2024-06-28 03:29:56,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2030, PETRI_PLACES=227, PETRI_TRANSITIONS=194} [2024-06-28 03:29:56,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 03:29:56,580 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 194 transitions, 2030 flow [2024-06-28 03:29:56,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:56,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:56,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:56,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:29:56,580 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:56,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash -553825252, now seen corresponding path program 7 times [2024-06-28 03:29:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:56,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741083790] [2024-06-28 03:29:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:56,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:57,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:57,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741083790] [2024-06-28 03:29:57,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741083790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:57,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874566820] [2024-06-28 03:29:57,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:57,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:57,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:57,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 194 transitions, 2030 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:57,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:57,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:57,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:57,778 INFO L124 PetriNetUnfolderBase]: 511/917 cut-off events. [2024-06-28 03:29:57,778 INFO L125 PetriNetUnfolderBase]: For 57170/57170 co-relation queries the response was YES. [2024-06-28 03:29:57,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6167 conditions, 917 events. 511/917 cut-off events. For 57170/57170 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4510 event pairs, 86 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 6062. Up to 830 conditions per place. [2024-06-28 03:29:57,785 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 30 changer transitions 0/210 dead transitions. [2024-06-28 03:29:57,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 210 transitions, 2494 flow [2024-06-28 03:29:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:29:57,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:29:57,786 INFO L175 Difference]: Start difference. First operand has 227 places, 194 transitions, 2030 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:29:57,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 210 transitions, 2494 flow [2024-06-28 03:29:57,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 210 transitions, 2414 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:57,932 INFO L231 Difference]: Finished difference. Result has 231 places, 194 transitions, 2015 flow [2024-06-28 03:29:57,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2015, PETRI_PLACES=231, PETRI_TRANSITIONS=194} [2024-06-28 03:29:57,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 03:29:57,933 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 194 transitions, 2015 flow [2024-06-28 03:29:57,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:57,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:57,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:29:57,933 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:57,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2056850306, now seen corresponding path program 2 times [2024-06-28 03:29:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:57,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747643890] [2024-06-28 03:29:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:58,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747643890] [2024-06-28 03:29:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747643890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:58,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:58,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454820327] [2024-06-28 03:29:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:58,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:58,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:58,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:58,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 194 transitions, 2015 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:58,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:58,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:58,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:58,845 INFO L124 PetriNetUnfolderBase]: 517/927 cut-off events. [2024-06-28 03:29:58,846 INFO L125 PetriNetUnfolderBase]: For 58381/58381 co-relation queries the response was YES. [2024-06-28 03:29:58,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6226 conditions, 927 events. 517/927 cut-off events. For 58381/58381 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4564 event pairs, 88 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 6119. Up to 838 conditions per place. [2024-06-28 03:29:58,855 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 182 selfloop transitions, 30 changer transitions 0/214 dead transitions. [2024-06-28 03:29:58,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 214 transitions, 2539 flow [2024-06-28 03:29:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:29:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:29:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:29:58,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:29:58,856 INFO L175 Difference]: Start difference. First operand has 231 places, 194 transitions, 2015 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:29:58,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 214 transitions, 2539 flow [2024-06-28 03:29:58,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 214 transitions, 2476 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:58,998 INFO L231 Difference]: Finished difference. Result has 233 places, 196 transitions, 2061 flow [2024-06-28 03:29:58,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2061, PETRI_PLACES=233, PETRI_TRANSITIONS=196} [2024-06-28 03:29:58,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-28 03:29:58,999 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 196 transitions, 2061 flow [2024-06-28 03:29:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:58,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:58,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:58,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:29:58,999 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:29:59,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1335759178, now seen corresponding path program 8 times [2024-06-28 03:29:59,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:59,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641142123] [2024-06-28 03:29:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:59,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641142123] [2024-06-28 03:29:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641142123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:59,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507295378] [2024-06-28 03:29:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:59,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:29:59,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 196 transitions, 2061 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:59,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:59,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:29:59,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:00,136 INFO L124 PetriNetUnfolderBase]: 521/935 cut-off events. [2024-06-28 03:30:00,137 INFO L125 PetriNetUnfolderBase]: For 60572/60572 co-relation queries the response was YES. [2024-06-28 03:30:00,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6344 conditions, 935 events. 521/935 cut-off events. For 60572/60572 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4622 event pairs, 84 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 6236. Up to 804 conditions per place. [2024-06-28 03:30:00,148 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 169 selfloop transitions, 42 changer transitions 0/213 dead transitions. [2024-06-28 03:30:00,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 213 transitions, 2559 flow [2024-06-28 03:30:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:30:00,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:30:00,150 INFO L175 Difference]: Start difference. First operand has 233 places, 196 transitions, 2061 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:30:00,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 213 transitions, 2559 flow [2024-06-28 03:30:00,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 213 transitions, 2466 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:00,310 INFO L231 Difference]: Finished difference. Result has 234 places, 197 transitions, 2084 flow [2024-06-28 03:30:00,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=234, PETRI_TRANSITIONS=197} [2024-06-28 03:30:00,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:30:00,311 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 197 transitions, 2084 flow [2024-06-28 03:30:00,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:00,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:00,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:00,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:30:00,311 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:00,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1335909280, now seen corresponding path program 3 times [2024-06-28 03:30:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742752811] [2024-06-28 03:30:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:00,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742752811] [2024-06-28 03:30:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742752811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:00,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:00,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501769343] [2024-06-28 03:30:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:00,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:00,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:00,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 197 transitions, 2084 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:00,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:00,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:00,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:01,316 INFO L124 PetriNetUnfolderBase]: 567/1009 cut-off events. [2024-06-28 03:30:01,316 INFO L125 PetriNetUnfolderBase]: For 80668/80668 co-relation queries the response was YES. [2024-06-28 03:30:01,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 1009 events. 567/1009 cut-off events. For 80668/80668 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4995 event pairs, 98 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 7287. Up to 745 conditions per place. [2024-06-28 03:30:01,328 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 169 selfloop transitions, 55 changer transitions 0/226 dead transitions. [2024-06-28 03:30:01,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 226 transitions, 3030 flow [2024-06-28 03:30:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:30:01,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:30:01,330 INFO L175 Difference]: Start difference. First operand has 234 places, 197 transitions, 2084 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:30:01,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 226 transitions, 3030 flow [2024-06-28 03:30:01,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 226 transitions, 2924 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:01,539 INFO L231 Difference]: Finished difference. Result has 239 places, 205 transitions, 2292 flow [2024-06-28 03:30:01,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2292, PETRI_PLACES=239, PETRI_TRANSITIONS=205} [2024-06-28 03:30:01,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 03:30:01,540 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 205 transitions, 2292 flow [2024-06-28 03:30:01,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:01,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:01,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:01,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:30:01,540 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:01,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1335755458, now seen corresponding path program 9 times [2024-06-28 03:30:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85007299] [2024-06-28 03:30:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:01,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:02,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85007299] [2024-06-28 03:30:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85007299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:02,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:02,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843233653] [2024-06-28 03:30:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:02,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:02,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:02,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 205 transitions, 2292 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:02,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:02,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:02,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:02,634 INFO L124 PetriNetUnfolderBase]: 578/1030 cut-off events. [2024-06-28 03:30:02,635 INFO L125 PetriNetUnfolderBase]: For 88412/88412 co-relation queries the response was YES. [2024-06-28 03:30:02,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 1030 events. 578/1030 cut-off events. For 88412/88412 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5161 event pairs, 92 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 7785. Up to 876 conditions per place. [2024-06-28 03:30:02,644 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 44 changer transitions 0/224 dead transitions. [2024-06-28 03:30:02,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 224 transitions, 2978 flow [2024-06-28 03:30:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:30:02,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:30:02,645 INFO L175 Difference]: Start difference. First operand has 239 places, 205 transitions, 2292 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:30:02,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 224 transitions, 2978 flow [2024-06-28 03:30:02,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 224 transitions, 2904 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:02,846 INFO L231 Difference]: Finished difference. Result has 243 places, 207 transitions, 2368 flow [2024-06-28 03:30:02,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2368, PETRI_PLACES=243, PETRI_TRANSITIONS=207} [2024-06-28 03:30:02,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-28 03:30:02,847 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 207 transitions, 2368 flow [2024-06-28 03:30:02,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:02,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:02,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:30:02,847 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:02,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash -406215652, now seen corresponding path program 10 times [2024-06-28 03:30:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:02,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172065128] [2024-06-28 03:30:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:03,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:03,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172065128] [2024-06-28 03:30:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172065128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:03,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141773628] [2024-06-28 03:30:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:03,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:03,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:03,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 207 transitions, 2368 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:03,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:03,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:03,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:04,092 INFO L124 PetriNetUnfolderBase]: 575/1025 cut-off events. [2024-06-28 03:30:04,092 INFO L125 PetriNetUnfolderBase]: For 85849/85849 co-relation queries the response was YES. [2024-06-28 03:30:04,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7796 conditions, 1025 events. 575/1025 cut-off events. For 85849/85849 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5122 event pairs, 90 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 7682. Up to 894 conditions per place. [2024-06-28 03:30:04,102 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 46 changer transitions 0/223 dead transitions. [2024-06-28 03:30:04,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 223 transitions, 2860 flow [2024-06-28 03:30:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:30:04,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:30:04,103 INFO L175 Difference]: Start difference. First operand has 243 places, 207 transitions, 2368 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:30:04,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 223 transitions, 2860 flow [2024-06-28 03:30:04,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 223 transitions, 2757 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:04,314 INFO L231 Difference]: Finished difference. Result has 247 places, 207 transitions, 2361 flow [2024-06-28 03:30:04,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2361, PETRI_PLACES=247, PETRI_TRANSITIONS=207} [2024-06-28 03:30:04,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 03:30:04,314 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 207 transitions, 2361 flow [2024-06-28 03:30:04,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:04,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:04,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:04,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:30:04,315 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:04,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -406007890, now seen corresponding path program 4 times [2024-06-28 03:30:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263441835] [2024-06-28 03:30:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:04,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:04,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263441835] [2024-06-28 03:30:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263441835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:04,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:04,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529905623] [2024-06-28 03:30:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:04,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:04,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 207 transitions, 2361 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:04,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:04,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:05,252 INFO L124 PetriNetUnfolderBase]: 591/1051 cut-off events. [2024-06-28 03:30:05,252 INFO L125 PetriNetUnfolderBase]: For 93487/93487 co-relation queries the response was YES. [2024-06-28 03:30:05,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 1051 events. 591/1051 cut-off events. For 93487/93487 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5315 event pairs, 80 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 8050. Up to 766 conditions per place. [2024-06-28 03:30:05,266 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 164 selfloop transitions, 66 changer transitions 0/232 dead transitions. [2024-06-28 03:30:05,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 232 transitions, 3285 flow [2024-06-28 03:30:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:30:05,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:30:05,267 INFO L175 Difference]: Start difference. First operand has 247 places, 207 transitions, 2361 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:30:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 232 transitions, 3285 flow [2024-06-28 03:30:05,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 232 transitions, 3187 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:05,475 INFO L231 Difference]: Finished difference. Result has 249 places, 211 transitions, 2500 flow [2024-06-28 03:30:05,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2500, PETRI_PLACES=249, PETRI_TRANSITIONS=211} [2024-06-28 03:30:05,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 03:30:05,475 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 211 transitions, 2500 flow [2024-06-28 03:30:05,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:05,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:05,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:05,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:30:05,476 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:05,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1341271660, now seen corresponding path program 5 times [2024-06-28 03:30:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:05,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924613226] [2024-06-28 03:30:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:05,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924613226] [2024-06-28 03:30:06,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924613226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159015773] [2024-06-28 03:30:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:06,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:06,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:06,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 211 transitions, 2500 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:06,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:06,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:06,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:06,450 INFO L124 PetriNetUnfolderBase]: 587/1045 cut-off events. [2024-06-28 03:30:06,450 INFO L125 PetriNetUnfolderBase]: For 91184/91184 co-relation queries the response was YES. [2024-06-28 03:30:06,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8082 conditions, 1045 events. 587/1045 cut-off events. For 91184/91184 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5264 event pairs, 82 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 7965. Up to 765 conditions per place. [2024-06-28 03:30:06,465 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 168 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2024-06-28 03:30:06,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 232 transitions, 3330 flow [2024-06-28 03:30:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:30:06,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:30:06,466 INFO L175 Difference]: Start difference. First operand has 249 places, 211 transitions, 2500 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:30:06,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 232 transitions, 3330 flow [2024-06-28 03:30:06,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 232 transitions, 3187 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:06,738 INFO L231 Difference]: Finished difference. Result has 253 places, 211 transitions, 2486 flow [2024-06-28 03:30:06,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2486, PETRI_PLACES=253, PETRI_TRANSITIONS=211} [2024-06-28 03:30:06,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 03:30:06,739 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 211 transitions, 2486 flow [2024-06-28 03:30:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:06,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:06,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:06,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:30:06,739 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:06,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1341481189, now seen corresponding path program 1 times [2024-06-28 03:30:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:06,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229528175] [2024-06-28 03:30:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:07,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:07,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229528175] [2024-06-28 03:30:07,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229528175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:07,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:07,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:07,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941556739] [2024-06-28 03:30:07,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:07,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:07,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 211 transitions, 2486 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:07,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:07,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:07,803 INFO L124 PetriNetUnfolderBase]: 583/1040 cut-off events. [2024-06-28 03:30:07,803 INFO L125 PetriNetUnfolderBase]: For 88046/88046 co-relation queries the response was YES. [2024-06-28 03:30:07,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7844 conditions, 1040 events. 583/1040 cut-off events. For 88046/88046 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5245 event pairs, 82 based on Foata normal form. 3/1043 useless extension candidates. Maximal degree in co-relation 7726. Up to 773 conditions per place. [2024-06-28 03:30:07,813 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 154 selfloop transitions, 77 changer transitions 0/233 dead transitions. [2024-06-28 03:30:07,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 233 transitions, 3246 flow [2024-06-28 03:30:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:30:07,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:30:07,814 INFO L175 Difference]: Start difference. First operand has 253 places, 211 transitions, 2486 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:30:07,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 233 transitions, 3246 flow [2024-06-28 03:30:08,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 233 transitions, 3094 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:08,048 INFO L231 Difference]: Finished difference. Result has 256 places, 214 transitions, 2616 flow [2024-06-28 03:30:08,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2616, PETRI_PLACES=256, PETRI_TRANSITIONS=214} [2024-06-28 03:30:08,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 03:30:08,048 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 214 transitions, 2616 flow [2024-06-28 03:30:08,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:08,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:08,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:30:08,049 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:08,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1341480910, now seen corresponding path program 6 times [2024-06-28 03:30:08,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:08,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125013960] [2024-06-28 03:30:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:08,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125013960] [2024-06-28 03:30:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125013960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:08,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329463282] [2024-06-28 03:30:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:08,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:08,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:08,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 214 transitions, 2616 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:08,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:08,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:08,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:08,990 INFO L124 PetriNetUnfolderBase]: 574/1026 cut-off events. [2024-06-28 03:30:08,990 INFO L125 PetriNetUnfolderBase]: For 81698/81698 co-relation queries the response was YES. [2024-06-28 03:30:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7574 conditions, 1026 events. 574/1026 cut-off events. For 81698/81698 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5170 event pairs, 81 based on Foata normal form. 4/1030 useless extension candidates. Maximal degree in co-relation 7454. Up to 759 conditions per place. [2024-06-28 03:30:09,000 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 158 selfloop transitions, 73 changer transitions 0/233 dead transitions. [2024-06-28 03:30:09,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 233 transitions, 3290 flow [2024-06-28 03:30:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:30:09,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:30:09,001 INFO L175 Difference]: Start difference. First operand has 256 places, 214 transitions, 2616 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:30:09,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 233 transitions, 3290 flow [2024-06-28 03:30:09,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 233 transitions, 3058 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:09,226 INFO L231 Difference]: Finished difference. Result has 259 places, 214 transitions, 2538 flow [2024-06-28 03:30:09,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2538, PETRI_PLACES=259, PETRI_TRANSITIONS=214} [2024-06-28 03:30:09,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 03:30:09,226 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 214 transitions, 2538 flow [2024-06-28 03:30:09,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:09,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:09,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:09,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:30:09,227 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:09,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1043147916, now seen corresponding path program 11 times [2024-06-28 03:30:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437843029] [2024-06-28 03:30:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:09,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:10,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437843029] [2024-06-28 03:30:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437843029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278868174] [2024-06-28 03:30:10,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:10,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:10,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:10,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:10,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:10,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 214 transitions, 2538 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:10,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:10,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:10,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:10,466 INFO L124 PetriNetUnfolderBase]: 578/1034 cut-off events. [2024-06-28 03:30:10,466 INFO L125 PetriNetUnfolderBase]: For 78134/78134 co-relation queries the response was YES. [2024-06-28 03:30:10,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7580 conditions, 1034 events. 578/1034 cut-off events. For 78134/78134 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5230 event pairs, 97 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 7459. Up to 866 conditions per place. [2024-06-28 03:30:10,476 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 32 changer transitions 0/230 dead transitions. [2024-06-28 03:30:10,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 230 transitions, 3060 flow [2024-06-28 03:30:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 03:30:10,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:30:10,477 INFO L175 Difference]: Start difference. First operand has 259 places, 214 transitions, 2538 flow. Second operand 9 states and 93 transitions. [2024-06-28 03:30:10,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 230 transitions, 3060 flow [2024-06-28 03:30:10,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 230 transitions, 2928 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:10,709 INFO L231 Difference]: Finished difference. Result has 259 places, 215 transitions, 2512 flow [2024-06-28 03:30:10,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2512, PETRI_PLACES=259, PETRI_TRANSITIONS=215} [2024-06-28 03:30:10,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 03:30:10,710 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 215 transitions, 2512 flow [2024-06-28 03:30:10,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:10,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:10,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:10,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:30:10,710 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:10,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025586, now seen corresponding path program 12 times [2024-06-28 03:30:10,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:10,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693274240] [2024-06-28 03:30:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693274240] [2024-06-28 03:30:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693274240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034730283] [2024-06-28 03:30:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:11,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:11,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:11,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 215 transitions, 2512 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:11,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:11,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:11,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:11,902 INFO L124 PetriNetUnfolderBase]: 582/1042 cut-off events. [2024-06-28 03:30:11,902 INFO L125 PetriNetUnfolderBase]: For 80357/80357 co-relation queries the response was YES. [2024-06-28 03:30:11,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7642 conditions, 1042 events. 582/1042 cut-off events. For 80357/80357 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5291 event pairs, 115 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 7520. Up to 899 conditions per place. [2024-06-28 03:30:11,912 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 182 selfloop transitions, 47 changer transitions 0/231 dead transitions. [2024-06-28 03:30:11,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 231 transitions, 3046 flow [2024-06-28 03:30:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:30:11,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:30:11,913 INFO L175 Difference]: Start difference. First operand has 259 places, 215 transitions, 2512 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:30:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 231 transitions, 3046 flow [2024-06-28 03:30:12,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 231 transitions, 2950 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:12,139 INFO L231 Difference]: Finished difference. Result has 261 places, 216 transitions, 2555 flow [2024-06-28 03:30:12,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2555, PETRI_PLACES=261, PETRI_TRANSITIONS=216} [2024-06-28 03:30:12,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 03:30:12,139 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 216 transitions, 2555 flow [2024-06-28 03:30:12,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:12,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:12,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:12,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:30:12,139 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:12,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1791295605, now seen corresponding path program 4 times [2024-06-28 03:30:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439380816] [2024-06-28 03:30:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:12,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439380816] [2024-06-28 03:30:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439380816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:12,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:12,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515968659] [2024-06-28 03:30:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:12,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:13,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:13,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 216 transitions, 2555 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:13,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:13,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:13,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:13,390 INFO L124 PetriNetUnfolderBase]: 580/1039 cut-off events. [2024-06-28 03:30:13,391 INFO L125 PetriNetUnfolderBase]: For 70758/70758 co-relation queries the response was YES. [2024-06-28 03:30:13,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 1039 events. 580/1039 cut-off events. For 70758/70758 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5276 event pairs, 106 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 7354. Up to 949 conditions per place. [2024-06-28 03:30:13,401 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 33 changer transitions 0/230 dead transitions. [2024-06-28 03:30:13,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 230 transitions, 3062 flow [2024-06-28 03:30:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:30:13,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:30:13,402 INFO L175 Difference]: Start difference. First operand has 261 places, 216 transitions, 2555 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:30:13,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 230 transitions, 3062 flow [2024-06-28 03:30:13,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 230 transitions, 2931 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:13,636 INFO L231 Difference]: Finished difference. Result has 262 places, 216 transitions, 2498 flow [2024-06-28 03:30:13,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2498, PETRI_PLACES=262, PETRI_TRANSITIONS=216} [2024-06-28 03:30:13,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 03:30:13,636 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 216 transitions, 2498 flow [2024-06-28 03:30:13,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:13,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:13,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:30:13,636 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:13,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:13,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1045021866, now seen corresponding path program 13 times [2024-06-28 03:30:13,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:13,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778105153] [2024-06-28 03:30:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:13,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:14,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778105153] [2024-06-28 03:30:14,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778105153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:14,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:14,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851659189] [2024-06-28 03:30:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:14,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:14,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 216 transitions, 2498 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:14,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:14,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:14,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:14,915 INFO L124 PetriNetUnfolderBase]: 584/1047 cut-off events. [2024-06-28 03:30:14,915 INFO L125 PetriNetUnfolderBase]: For 71776/71776 co-relation queries the response was YES. [2024-06-28 03:30:14,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1047 events. 584/1047 cut-off events. For 71776/71776 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5323 event pairs, 111 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7311. Up to 856 conditions per place. [2024-06-28 03:30:14,925 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 47 changer transitions 0/232 dead transitions. [2024-06-28 03:30:14,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 232 transitions, 3026 flow [2024-06-28 03:30:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:30:14,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:30:14,926 INFO L175 Difference]: Start difference. First operand has 262 places, 216 transitions, 2498 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:30:14,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 232 transitions, 3026 flow [2024-06-28 03:30:15,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 232 transitions, 2786 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-28 03:30:15,142 INFO L231 Difference]: Finished difference. Result has 260 places, 217 transitions, 2390 flow [2024-06-28 03:30:15,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2390, PETRI_PLACES=260, PETRI_TRANSITIONS=217} [2024-06-28 03:30:15,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 03:30:15,142 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 217 transitions, 2390 flow [2024-06-28 03:30:15,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:15,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:15,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:15,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:30:15,143 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:15,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1131867498, now seen corresponding path program 7 times [2024-06-28 03:30:15,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:15,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932011310] [2024-06-28 03:30:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:15,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:15,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932011310] [2024-06-28 03:30:15,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932011310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:15,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:15,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:15,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59928680] [2024-06-28 03:30:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:15,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:15,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:15,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 217 transitions, 2390 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:15,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:15,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:15,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:16,106 INFO L124 PetriNetUnfolderBase]: 590/1057 cut-off events. [2024-06-28 03:30:16,106 INFO L125 PetriNetUnfolderBase]: For 73766/73766 co-relation queries the response was YES. [2024-06-28 03:30:16,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7461 conditions, 1057 events. 590/1057 cut-off events. For 73766/73766 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5391 event pairs, 90 based on Foata normal form. 2/1059 useless extension candidates. Maximal degree in co-relation 7338. Up to 908 conditions per place. [2024-06-28 03:30:16,115 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 47 changer transitions 0/236 dead transitions. [2024-06-28 03:30:16,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 236 transitions, 2966 flow [2024-06-28 03:30:16,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:30:16,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:30:16,116 INFO L175 Difference]: Start difference. First operand has 260 places, 217 transitions, 2390 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:30:16,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 236 transitions, 2966 flow [2024-06-28 03:30:16,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 236 transitions, 2848 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:16,313 INFO L231 Difference]: Finished difference. Result has 261 places, 219 transitions, 2433 flow [2024-06-28 03:30:16,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2433, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2024-06-28 03:30:16,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 03:30:16,314 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 2433 flow [2024-06-28 03:30:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:16,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:16,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:16,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:30:16,314 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:16,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1583247350, now seen corresponding path program 14 times [2024-06-28 03:30:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:16,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380056440] [2024-06-28 03:30:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:16,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380056440] [2024-06-28 03:30:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380056440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:17,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112236178] [2024-06-28 03:30:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:17,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:17,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:17,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 2433 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:17,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:17,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:17,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:17,474 INFO L124 PetriNetUnfolderBase]: 594/1065 cut-off events. [2024-06-28 03:30:17,474 INFO L125 PetriNetUnfolderBase]: For 71900/71900 co-relation queries the response was YES. [2024-06-28 03:30:17,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7515 conditions, 1065 events. 594/1065 cut-off events. For 71900/71900 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5454 event pairs, 82 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 7393. Up to 882 conditions per place. [2024-06-28 03:30:17,484 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 177 selfloop transitions, 55 changer transitions 0/234 dead transitions. [2024-06-28 03:30:17,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 234 transitions, 2971 flow [2024-06-28 03:30:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:30:17,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:30:17,485 INFO L175 Difference]: Start difference. First operand has 261 places, 219 transitions, 2433 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:30:17,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 234 transitions, 2971 flow [2024-06-28 03:30:17,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 234 transitions, 2850 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:17,810 INFO L231 Difference]: Finished difference. Result has 262 places, 220 transitions, 2460 flow [2024-06-28 03:30:17,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2460, PETRI_PLACES=262, PETRI_TRANSITIONS=220} [2024-06-28 03:30:17,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 03:30:17,810 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 220 transitions, 2460 flow [2024-06-28 03:30:17,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:17,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:17,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:17,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:30:17,811 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:17,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1869418600, now seen corresponding path program 15 times [2024-06-28 03:30:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:17,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637425694] [2024-06-28 03:30:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:17,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637425694] [2024-06-28 03:30:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637425694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:18,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90840503] [2024-06-28 03:30:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:18,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:18,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 220 transitions, 2460 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:18,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:18,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:18,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:18,990 INFO L124 PetriNetUnfolderBase]: 605/1086 cut-off events. [2024-06-28 03:30:18,990 INFO L125 PetriNetUnfolderBase]: For 80386/80386 co-relation queries the response was YES. [2024-06-28 03:30:18,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 1086 events. 605/1086 cut-off events. For 80386/80386 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5598 event pairs, 83 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 7744. Up to 860 conditions per place. [2024-06-28 03:30:18,998 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 176 selfloop transitions, 59 changer transitions 0/237 dead transitions. [2024-06-28 03:30:18,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 237 transitions, 3184 flow [2024-06-28 03:30:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:30:18,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:30:18,999 INFO L175 Difference]: Start difference. First operand has 262 places, 220 transitions, 2460 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:30:18,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 237 transitions, 3184 flow [2024-06-28 03:30:19,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 237 transitions, 3044 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:19,207 INFO L231 Difference]: Finished difference. Result has 264 places, 222 transitions, 2512 flow [2024-06-28 03:30:19,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2512, PETRI_PLACES=264, PETRI_TRANSITIONS=222} [2024-06-28 03:30:19,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 03:30:19,208 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 222 transitions, 2512 flow [2024-06-28 03:30:19,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:19,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:19,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:30:19,209 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:19,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash 410926472, now seen corresponding path program 8 times [2024-06-28 03:30:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695704444] [2024-06-28 03:30:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:19,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:19,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695704444] [2024-06-28 03:30:19,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695704444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:19,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:19,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:19,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732873576] [2024-06-28 03:30:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:19,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:19,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:19,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:19,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 222 transitions, 2512 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:19,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:19,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:19,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:20,195 INFO L124 PetriNetUnfolderBase]: 651/1160 cut-off events. [2024-06-28 03:30:20,195 INFO L125 PetriNetUnfolderBase]: For 102493/102493 co-relation queries the response was YES. [2024-06-28 03:30:20,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9017 conditions, 1160 events. 651/1160 cut-off events. For 102493/102493 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5978 event pairs, 110 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 8893. Up to 733 conditions per place. [2024-06-28 03:30:20,204 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 86 changer transitions 0/249 dead transitions. [2024-06-28 03:30:20,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 249 transitions, 3564 flow [2024-06-28 03:30:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:30:20,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:30:20,206 INFO L175 Difference]: Start difference. First operand has 264 places, 222 transitions, 2512 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:30:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 249 transitions, 3564 flow [2024-06-28 03:30:20,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 249 transitions, 3450 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:20,477 INFO L231 Difference]: Finished difference. Result has 269 places, 230 transitions, 2855 flow [2024-06-28 03:30:20,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2855, PETRI_PLACES=269, PETRI_TRANSITIONS=230} [2024-06-28 03:30:20,477 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 03:30:20,477 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 230 transitions, 2855 flow [2024-06-28 03:30:20,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:20,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:20,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:20,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:30:20,478 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:20,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:20,478 INFO L85 PathProgramCache]: Analyzing trace with hash 416282900, now seen corresponding path program 16 times [2024-06-28 03:30:20,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:20,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396004200] [2024-06-28 03:30:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:21,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396004200] [2024-06-28 03:30:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396004200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:21,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:21,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:21,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288708558] [2024-06-28 03:30:21,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:21,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:21,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:21,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:21,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 230 transitions, 2855 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:21,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:21,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:21,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:21,636 INFO L124 PetriNetUnfolderBase]: 648/1155 cut-off events. [2024-06-28 03:30:21,636 INFO L125 PetriNetUnfolderBase]: For 97206/97206 co-relation queries the response was YES. [2024-06-28 03:30:21,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9178 conditions, 1155 events. 648/1155 cut-off events. For 97206/97206 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5958 event pairs, 89 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 9052. Up to 972 conditions per place. [2024-06-28 03:30:21,647 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 181 selfloop transitions, 61 changer transitions 0/244 dead transitions. [2024-06-28 03:30:21,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 244 transitions, 3383 flow [2024-06-28 03:30:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:30:21,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:30:21,647 INFO L175 Difference]: Start difference. First operand has 269 places, 230 transitions, 2855 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:30:21,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 244 transitions, 3383 flow [2024-06-28 03:30:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 244 transitions, 3281 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:21,928 INFO L231 Difference]: Finished difference. Result has 273 places, 230 transitions, 2881 flow [2024-06-28 03:30:21,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2881, PETRI_PLACES=273, PETRI_TRANSITIONS=230} [2024-06-28 03:30:21,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 03:30:21,929 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 230 transitions, 2881 flow [2024-06-28 03:30:21,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:21,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:21,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:21,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:30:21,930 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:21,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 416288852, now seen corresponding path program 9 times [2024-06-28 03:30:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:21,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647949794] [2024-06-28 03:30:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:21,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:22,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:22,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647949794] [2024-06-28 03:30:22,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647949794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:22,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:22,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:22,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714321940] [2024-06-28 03:30:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:22,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:22,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:22,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:22,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:22,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 230 transitions, 2881 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:22,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:22,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:22,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:22,900 INFO L124 PetriNetUnfolderBase]: 654/1165 cut-off events. [2024-06-28 03:30:22,900 INFO L125 PetriNetUnfolderBase]: For 99601/99601 co-relation queries the response was YES. [2024-06-28 03:30:22,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1165 events. 654/1165 cut-off events. For 99601/99601 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6023 event pairs, 84 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 9189. Up to 730 conditions per place. [2024-06-28 03:30:22,911 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 92 changer transitions 0/251 dead transitions. [2024-06-28 03:30:22,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 251 transitions, 3824 flow [2024-06-28 03:30:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:30:22,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:30:22,912 INFO L175 Difference]: Start difference. First operand has 273 places, 230 transitions, 2881 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:30:22,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 251 transitions, 3824 flow [2024-06-28 03:30:23,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 251 transitions, 3684 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:23,192 INFO L231 Difference]: Finished difference. Result has 274 places, 232 transitions, 2998 flow [2024-06-28 03:30:23,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2998, PETRI_PLACES=274, PETRI_TRANSITIONS=232} [2024-06-28 03:30:23,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 03:30:23,192 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 232 transitions, 2998 flow [2024-06-28 03:30:23,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:23,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:23,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:23,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:30:23,193 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:23,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1577533058, now seen corresponding path program 10 times [2024-06-28 03:30:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177435076] [2024-06-28 03:30:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177435076] [2024-06-28 03:30:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177435076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:23,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:23,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470051544] [2024-06-28 03:30:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:23,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:23,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:23,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:23,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 232 transitions, 2998 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:23,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:23,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:23,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:24,197 INFO L124 PetriNetUnfolderBase]: 660/1175 cut-off events. [2024-06-28 03:30:24,197 INFO L125 PetriNetUnfolderBase]: For 100913/100913 co-relation queries the response was YES. [2024-06-28 03:30:24,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9514 conditions, 1175 events. 660/1175 cut-off events. For 100913/100913 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6085 event pairs, 79 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 9386. Up to 732 conditions per place. [2024-06-28 03:30:24,209 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 151 selfloop transitions, 100 changer transitions 0/253 dead transitions. [2024-06-28 03:30:24,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 253 transitions, 3949 flow [2024-06-28 03:30:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:30:24,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:30:24,210 INFO L175 Difference]: Start difference. First operand has 274 places, 232 transitions, 2998 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:30:24,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 253 transitions, 3949 flow [2024-06-28 03:30:24,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 253 transitions, 3754 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:24,622 INFO L231 Difference]: Finished difference. Result has 276 places, 234 transitions, 3080 flow [2024-06-28 03:30:24,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2810, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3080, PETRI_PLACES=276, PETRI_TRANSITIONS=234} [2024-06-28 03:30:24,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 03:30:24,623 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 234 transitions, 3080 flow [2024-06-28 03:30:24,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:24,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:24,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:30:24,623 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:24,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1577525339, now seen corresponding path program 2 times [2024-06-28 03:30:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264861291] [2024-06-28 03:30:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264861291] [2024-06-28 03:30:25,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264861291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:25,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:25,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:25,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491648016] [2024-06-28 03:30:25,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:25,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:25,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:25,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:25,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:25,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 234 transitions, 3080 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:25,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:25,909 INFO L124 PetriNetUnfolderBase]: 656/1170 cut-off events. [2024-06-28 03:30:25,909 INFO L125 PetriNetUnfolderBase]: For 95092/95092 co-relation queries the response was YES. [2024-06-28 03:30:25,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9289 conditions, 1170 events. 656/1170 cut-off events. For 95092/95092 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6070 event pairs, 79 based on Foata normal form. 3/1173 useless extension candidates. Maximal degree in co-relation 9161. Up to 746 conditions per place. [2024-06-28 03:30:25,919 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 117 changer transitions 0/254 dead transitions. [2024-06-28 03:30:25,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 254 transitions, 3899 flow [2024-06-28 03:30:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:30:25,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:30:25,921 INFO L175 Difference]: Start difference. First operand has 276 places, 234 transitions, 3080 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:30:25,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 254 transitions, 3899 flow [2024-06-28 03:30:26,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 254 transitions, 3677 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:26,183 INFO L231 Difference]: Finished difference. Result has 279 places, 237 transitions, 3270 flow [2024-06-28 03:30:26,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3270, PETRI_PLACES=279, PETRI_TRANSITIONS=237} [2024-06-28 03:30:26,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 03:30:26,184 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 237 transitions, 3270 flow [2024-06-28 03:30:26,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:26,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:26,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:26,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:30:26,184 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:26,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1577525618, now seen corresponding path program 11 times [2024-06-28 03:30:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041382355] [2024-06-28 03:30:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041382355] [2024-06-28 03:30:26,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041382355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:26,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:26,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481160026] [2024-06-28 03:30:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:26,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:26,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:26,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 237 transitions, 3270 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:26,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:26,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:27,225 INFO L124 PetriNetUnfolderBase]: 647/1156 cut-off events. [2024-06-28 03:30:27,226 INFO L125 PetriNetUnfolderBase]: For 86548/86548 co-relation queries the response was YES. [2024-06-28 03:30:27,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9037 conditions, 1156 events. 647/1156 cut-off events. For 86548/86548 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6010 event pairs, 106 based on Foata normal form. 4/1160 useless extension candidates. Maximal degree in co-relation 8908. Up to 934 conditions per place. [2024-06-28 03:30:27,237 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 192 selfloop transitions, 60 changer transitions 0/254 dead transitions. [2024-06-28 03:30:27,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 254 transitions, 3987 flow [2024-06-28 03:30:27,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:30:27,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:30:27,238 INFO L175 Difference]: Start difference. First operand has 279 places, 237 transitions, 3270 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:30:27,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 254 transitions, 3987 flow [2024-06-28 03:30:27,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 254 transitions, 3679 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:27,561 INFO L231 Difference]: Finished difference. Result has 282 places, 237 transitions, 3092 flow [2024-06-28 03:30:27,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3092, PETRI_PLACES=282, PETRI_TRANSITIONS=237} [2024-06-28 03:30:27,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-28 03:30:27,562 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 237 transitions, 3092 flow [2024-06-28 03:30:27,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:27,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:27,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:27,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:30:27,562 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:27,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1126062178, now seen corresponding path program 12 times [2024-06-28 03:30:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575688952] [2024-06-28 03:30:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:27,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:28,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:28,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575688952] [2024-06-28 03:30:28,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575688952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:28,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:28,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054525391] [2024-06-28 03:30:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:28,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:28,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:28,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:28,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 237 transitions, 3092 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:28,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:28,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:28,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:28,583 INFO L124 PetriNetUnfolderBase]: 711/1260 cut-off events. [2024-06-28 03:30:28,583 INFO L125 PetriNetUnfolderBase]: For 115256/115256 co-relation queries the response was YES. [2024-06-28 03:30:28,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 1260 events. 711/1260 cut-off events. For 115256/115256 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6614 event pairs, 85 based on Foata normal form. 4/1264 useless extension candidates. Maximal degree in co-relation 10263. Up to 587 conditions per place. [2024-06-28 03:30:28,603 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 141 selfloop transitions, 128 changer transitions 0/271 dead transitions. [2024-06-28 03:30:28,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 271 transitions, 4487 flow [2024-06-28 03:30:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:30:28,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:30:28,605 INFO L175 Difference]: Start difference. First operand has 282 places, 237 transitions, 3092 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:30:28,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 271 transitions, 4487 flow [2024-06-28 03:30:28,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 271 transitions, 4207 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-28 03:30:28,989 INFO L231 Difference]: Finished difference. Result has 283 places, 247 transitions, 3306 flow [2024-06-28 03:30:28,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3306, PETRI_PLACES=283, PETRI_TRANSITIONS=247} [2024-06-28 03:30:28,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 03:30:28,990 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 247 transitions, 3306 flow [2024-06-28 03:30:28,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:28,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:28,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:28,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:30:28,991 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:28,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash -536590231, now seen corresponding path program 3 times [2024-06-28 03:30:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:28,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795481018] [2024-06-28 03:30:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:29,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795481018] [2024-06-28 03:30:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795481018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:29,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986802749] [2024-06-28 03:30:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:29,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:29,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:29,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 247 transitions, 3306 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:29,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:29,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:29,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:30,138 INFO L124 PetriNetUnfolderBase]: 705/1251 cut-off events. [2024-06-28 03:30:30,138 INFO L125 PetriNetUnfolderBase]: For 106747/106747 co-relation queries the response was YES. [2024-06-28 03:30:30,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10062 conditions, 1251 events. 705/1251 cut-off events. For 106747/106747 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6555 event pairs, 79 based on Foata normal form. 3/1254 useless extension candidates. Maximal degree in co-relation 9936. Up to 712 conditions per place. [2024-06-28 03:30:30,151 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 134 changer transitions 0/272 dead transitions. [2024-06-28 03:30:30,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 272 transitions, 4602 flow [2024-06-28 03:30:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:30:30,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 03:30:30,152 INFO L175 Difference]: Start difference. First operand has 283 places, 247 transitions, 3306 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:30:30,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 272 transitions, 4602 flow [2024-06-28 03:30:30,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 272 transitions, 4369 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:30,411 INFO L231 Difference]: Finished difference. Result has 291 places, 254 transitions, 3680 flow [2024-06-28 03:30:30,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3119, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3680, PETRI_PLACES=291, PETRI_TRANSITIONS=254} [2024-06-28 03:30:30,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-28 03:30:30,411 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 254 transitions, 3680 flow [2024-06-28 03:30:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:30,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:30,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:30,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:30:30,412 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:30,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1599397768, now seen corresponding path program 13 times [2024-06-28 03:30:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:30,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491411489] [2024-06-28 03:30:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491411489] [2024-06-28 03:30:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491411489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:31,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866300037] [2024-06-28 03:30:31,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:31,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:31,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 254 transitions, 3680 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:31,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:31,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:31,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:31,358 INFO L124 PetriNetUnfolderBase]: 744/1315 cut-off events. [2024-06-28 03:30:31,359 INFO L125 PetriNetUnfolderBase]: For 128708/128708 co-relation queries the response was YES. [2024-06-28 03:30:31,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11359 conditions, 1315 events. 744/1315 cut-off events. For 128708/128708 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6923 event pairs, 98 based on Foata normal form. 4/1319 useless extension candidates. Maximal degree in co-relation 11228. Up to 609 conditions per place. [2024-06-28 03:30:31,372 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 120 changer transitions 0/283 dead transitions. [2024-06-28 03:30:31,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 283 transitions, 5070 flow [2024-06-28 03:30:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:30:31,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:30:31,373 INFO L175 Difference]: Start difference. First operand has 291 places, 254 transitions, 3680 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:30:31,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 283 transitions, 5070 flow [2024-06-28 03:30:31,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 283 transitions, 4919 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:31,707 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 4015 flow [2024-06-28 03:30:31,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4015, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-28 03:30:31,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 03:30:31,707 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 4015 flow [2024-06-28 03:30:31,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:31,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:31,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:31,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:30:31,707 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:31,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398047, now seen corresponding path program 4 times [2024-06-28 03:30:31,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:31,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30627366] [2024-06-28 03:30:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:31,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:32,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:32,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30627366] [2024-06-28 03:30:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30627366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:32,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:32,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743220741] [2024-06-28 03:30:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:32,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:32,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:32,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 4015 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:32,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:32,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:32,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:32,827 INFO L124 PetriNetUnfolderBase]: 738/1306 cut-off events. [2024-06-28 03:30:32,827 INFO L125 PetriNetUnfolderBase]: For 119243/119243 co-relation queries the response was YES. [2024-06-28 03:30:32,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11308 conditions, 1306 events. 738/1306 cut-off events. For 119243/119243 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6885 event pairs, 94 based on Foata normal form. 3/1309 useless extension candidates. Maximal degree in co-relation 11174. Up to 756 conditions per place. [2024-06-28 03:30:32,841 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 124 changer transitions 0/281 dead transitions. [2024-06-28 03:30:32,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 281 transitions, 5136 flow [2024-06-28 03:30:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:30:32,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:30:32,841 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 4015 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:30:32,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 281 transitions, 5136 flow [2024-06-28 03:30:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 281 transitions, 4868 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:33,184 INFO L231 Difference]: Finished difference. Result has 302 places, 263 transitions, 4036 flow [2024-06-28 03:30:33,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4036, PETRI_PLACES=302, PETRI_TRANSITIONS=263} [2024-06-28 03:30:33,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 03:30:33,184 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 263 transitions, 4036 flow [2024-06-28 03:30:33,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:33,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:33,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:30:33,185 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:33,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1599188518, now seen corresponding path program 14 times [2024-06-28 03:30:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111820908] [2024-06-28 03:30:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:33,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:33,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111820908] [2024-06-28 03:30:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111820908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560786001] [2024-06-28 03:30:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:33,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:33,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 263 transitions, 4036 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:33,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:33,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:34,173 INFO L124 PetriNetUnfolderBase]: 754/1332 cut-off events. [2024-06-28 03:30:34,173 INFO L125 PetriNetUnfolderBase]: For 126751/126751 co-relation queries the response was YES. [2024-06-28 03:30:34,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11656 conditions, 1332 events. 754/1332 cut-off events. For 126751/126751 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7040 event pairs, 97 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 11521. Up to 616 conditions per place. [2024-06-28 03:30:34,187 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 132 changer transitions 0/287 dead transitions. [2024-06-28 03:30:34,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 287 transitions, 5311 flow [2024-06-28 03:30:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:30:34,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:30:34,188 INFO L175 Difference]: Start difference. First operand has 302 places, 263 transitions, 4036 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:30:34,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 287 transitions, 5311 flow [2024-06-28 03:30:34,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 287 transitions, 5089 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:34,544 INFO L231 Difference]: Finished difference. Result has 307 places, 268 transitions, 4253 flow [2024-06-28 03:30:34,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4253, PETRI_PLACES=307, PETRI_TRANSITIONS=268} [2024-06-28 03:30:34,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 03:30:34,544 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 268 transitions, 4253 flow [2024-06-28 03:30:34,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:34,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:34,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:34,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:30:34,545 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:34,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:34,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1599182566, now seen corresponding path program 17 times [2024-06-28 03:30:34,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:34,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033351874] [2024-06-28 03:30:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:34,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:35,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033351874] [2024-06-28 03:30:35,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033351874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:35,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:35,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114280141] [2024-06-28 03:30:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:35,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:35,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 268 transitions, 4253 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:35,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:35,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:35,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:35,743 INFO L124 PetriNetUnfolderBase]: 758/1340 cut-off events. [2024-06-28 03:30:35,743 INFO L125 PetriNetUnfolderBase]: For 130633/130633 co-relation queries the response was YES. [2024-06-28 03:30:35,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11822 conditions, 1340 events. 758/1340 cut-off events. For 130633/130633 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7114 event pairs, 98 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 11685. Up to 1122 conditions per place. [2024-06-28 03:30:35,757 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 208 selfloop transitions, 71 changer transitions 0/281 dead transitions. [2024-06-28 03:30:35,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 281 transitions, 4879 flow [2024-06-28 03:30:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:30:35,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:30:35,758 INFO L175 Difference]: Start difference. First operand has 307 places, 268 transitions, 4253 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:30:35,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 281 transitions, 4879 flow [2024-06-28 03:30:36,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 281 transitions, 4616 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:36,153 INFO L231 Difference]: Finished difference. Result has 310 places, 269 transitions, 4168 flow [2024-06-28 03:30:36,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4168, PETRI_PLACES=310, PETRI_TRANSITIONS=269} [2024-06-28 03:30:36,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 03:30:36,153 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 269 transitions, 4168 flow [2024-06-28 03:30:36,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:36,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:36,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:30:36,153 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:36,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1599390328, now seen corresponding path program 15 times [2024-06-28 03:30:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714279897] [2024-06-28 03:30:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:36,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:36,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714279897] [2024-06-28 03:30:36,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714279897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:36,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:36,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:36,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005681630] [2024-06-28 03:30:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:36,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:36,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:36,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 269 transitions, 4168 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:36,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:36,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:36,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:37,150 INFO L124 PetriNetUnfolderBase]: 752/1330 cut-off events. [2024-06-28 03:30:37,150 INFO L125 PetriNetUnfolderBase]: For 125624/125624 co-relation queries the response was YES. [2024-06-28 03:30:37,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11415 conditions, 1330 events. 752/1330 cut-off events. For 125624/125624 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7031 event pairs, 109 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 11277. Up to 620 conditions per place. [2024-06-28 03:30:37,165 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 123 changer transitions 0/287 dead transitions. [2024-06-28 03:30:37,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 287 transitions, 5150 flow [2024-06-28 03:30:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:30:37,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:30:37,166 INFO L175 Difference]: Start difference. First operand has 310 places, 269 transitions, 4168 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:30:37,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 287 transitions, 5150 flow [2024-06-28 03:30:37,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 287 transitions, 4938 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:37,552 INFO L231 Difference]: Finished difference. Result has 313 places, 269 transitions, 4207 flow [2024-06-28 03:30:37,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4207, PETRI_PLACES=313, PETRI_TRANSITIONS=269} [2024-06-28 03:30:37,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 03:30:37,552 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 269 transitions, 4207 flow [2024-06-28 03:30:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:37,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:37,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:37,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:30:37,553 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:37,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890838, now seen corresponding path program 16 times [2024-06-28 03:30:37,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:37,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797732126] [2024-06-28 03:30:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:37,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797732126] [2024-06-28 03:30:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797732126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:38,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:38,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:38,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018009163] [2024-06-28 03:30:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:38,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:38,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:38,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:38,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 269 transitions, 4207 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:38,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:38,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:38,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:38,573 INFO L124 PetriNetUnfolderBase]: 746/1320 cut-off events. [2024-06-28 03:30:38,573 INFO L125 PetriNetUnfolderBase]: For 122089/122089 co-relation queries the response was YES. [2024-06-28 03:30:38,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11242 conditions, 1320 events. 746/1320 cut-off events. For 122089/122089 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6998 event pairs, 82 based on Foata normal form. 2/1322 useless extension candidates. Maximal degree in co-relation 11103. Up to 616 conditions per place. [2024-06-28 03:30:38,586 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 141 changer transitions 0/288 dead transitions. [2024-06-28 03:30:38,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 288 transitions, 5361 flow [2024-06-28 03:30:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:30:38,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:30:38,587 INFO L175 Difference]: Start difference. First operand has 313 places, 269 transitions, 4207 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:30:38,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 288 transitions, 5361 flow [2024-06-28 03:30:38,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 288 transitions, 5133 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:38,995 INFO L231 Difference]: Finished difference. Result has 315 places, 269 transitions, 4266 flow [2024-06-28 03:30:38,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3979, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4266, PETRI_PLACES=315, PETRI_TRANSITIONS=269} [2024-06-28 03:30:38,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 03:30:38,996 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 269 transitions, 4266 flow [2024-06-28 03:30:38,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:38,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:38,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:38,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:30:38,996 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:38,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1865421757, now seen corresponding path program 5 times [2024-06-28 03:30:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:38,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666475756] [2024-06-28 03:30:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666475756] [2024-06-28 03:30:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666475756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:39,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:39,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094722778] [2024-06-28 03:30:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:39,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:39,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 269 transitions, 4266 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:39,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:39,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:39,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:40,284 INFO L124 PetriNetUnfolderBase]: 749/1325 cut-off events. [2024-06-28 03:30:40,284 INFO L125 PetriNetUnfolderBase]: For 122104/122104 co-relation queries the response was YES. [2024-06-28 03:30:40,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11354 conditions, 1325 events. 749/1325 cut-off events. For 122104/122104 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6994 event pairs, 239 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 11214. Up to 1265 conditions per place. [2024-06-28 03:30:40,300 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 23 changer transitions 0/285 dead transitions. [2024-06-28 03:30:40,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 285 transitions, 5241 flow [2024-06-28 03:30:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:30:40,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:30:40,301 INFO L175 Difference]: Start difference. First operand has 315 places, 269 transitions, 4266 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:30:40,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 285 transitions, 5241 flow [2024-06-28 03:30:40,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 285 transitions, 4916 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:40,766 INFO L231 Difference]: Finished difference. Result has 317 places, 271 transitions, 4031 flow [2024-06-28 03:30:40,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4031, PETRI_PLACES=317, PETRI_TRANSITIONS=271} [2024-06-28 03:30:40,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 03:30:40,767 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 271 transitions, 4031 flow [2024-06-28 03:30:40,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:40,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:40,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:30:40,767 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:40,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1856157748, now seen corresponding path program 17 times [2024-06-28 03:30:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031650843] [2024-06-28 03:30:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031650843] [2024-06-28 03:30:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031650843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:41,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079924278] [2024-06-28 03:30:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:41,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:41,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:41,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 271 transitions, 4031 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:41,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:41,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:41,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:41,796 INFO L124 PetriNetUnfolderBase]: 743/1317 cut-off events. [2024-06-28 03:30:41,796 INFO L125 PetriNetUnfolderBase]: For 119800/119800 co-relation queries the response was YES. [2024-06-28 03:30:41,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10628 conditions, 1317 events. 743/1317 cut-off events. For 119800/119800 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6990 event pairs, 237 based on Foata normal form. 4/1321 useless extension candidates. Maximal degree in co-relation 10487. Up to 1252 conditions per place. [2024-06-28 03:30:41,810 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 257 selfloop transitions, 24 changer transitions 0/283 dead transitions. [2024-06-28 03:30:41,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 283 transitions, 4795 flow [2024-06-28 03:30:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:30:41,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:30:41,811 INFO L175 Difference]: Start difference. First operand has 317 places, 271 transitions, 4031 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:30:41,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 283 transitions, 4795 flow [2024-06-28 03:30:42,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 283 transitions, 4650 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:42,233 INFO L231 Difference]: Finished difference. Result has 319 places, 271 transitions, 3943 flow [2024-06-28 03:30:42,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3886, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3943, PETRI_PLACES=319, PETRI_TRANSITIONS=271} [2024-06-28 03:30:42,233 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 03:30:42,233 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 271 transitions, 3943 flow [2024-06-28 03:30:42,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:42,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:42,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:42,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:30:42,234 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:42,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1176292318, now seen corresponding path program 18 times [2024-06-28 03:30:42,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:42,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125595680] [2024-06-28 03:30:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:42,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:42,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125595680] [2024-06-28 03:30:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125595680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:42,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133686547] [2024-06-28 03:30:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:42,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:42,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:42,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 271 transitions, 3943 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:42,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:42,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:42,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:43,284 INFO L124 PetriNetUnfolderBase]: 747/1325 cut-off events. [2024-06-28 03:30:43,284 INFO L125 PetriNetUnfolderBase]: For 116024/116024 co-relation queries the response was YES. [2024-06-28 03:30:43,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10618 conditions, 1325 events. 747/1325 cut-off events. For 116024/116024 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7036 event pairs, 101 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 10476. Up to 1107 conditions per place. [2024-06-28 03:30:43,297 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 220 selfloop transitions, 62 changer transitions 0/284 dead transitions. [2024-06-28 03:30:43,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 284 transitions, 4577 flow [2024-06-28 03:30:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:30:43,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:30:43,298 INFO L175 Difference]: Start difference. First operand has 319 places, 271 transitions, 3943 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:30:43,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 284 transitions, 4577 flow [2024-06-28 03:30:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 284 transitions, 4498 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:30:43,722 INFO L231 Difference]: Finished difference. Result has 318 places, 272 transitions, 4026 flow [2024-06-28 03:30:43,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4026, PETRI_PLACES=318, PETRI_TRANSITIONS=272} [2024-06-28 03:30:43,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 03:30:43,722 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 272 transitions, 4026 flow [2024-06-28 03:30:43,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:43,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:43,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:43,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:30:43,723 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:43,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1176296038, now seen corresponding path program 19 times [2024-06-28 03:30:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127197136] [2024-06-28 03:30:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:43,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127197136] [2024-06-28 03:30:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127197136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:44,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775998922] [2024-06-28 03:30:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:44,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:44,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 272 transitions, 4026 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:44,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:44,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:44,743 INFO L124 PetriNetUnfolderBase]: 751/1333 cut-off events. [2024-06-28 03:30:44,743 INFO L125 PetriNetUnfolderBase]: For 119412/119412 co-relation queries the response was YES. [2024-06-28 03:30:44,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10798 conditions, 1333 events. 751/1333 cut-off events. For 119412/119412 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7101 event pairs, 103 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 10655. Up to 1086 conditions per place. [2024-06-28 03:30:44,757 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 219 selfloop transitions, 65 changer transitions 0/286 dead transitions. [2024-06-28 03:30:44,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 286 transitions, 4836 flow [2024-06-28 03:30:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:30:44,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:30:44,758 INFO L175 Difference]: Start difference. First operand has 318 places, 272 transitions, 4026 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:30:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 286 transitions, 4836 flow [2024-06-28 03:30:45,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 286 transitions, 4684 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:45,190 INFO L231 Difference]: Finished difference. Result has 320 places, 273 transitions, 4042 flow [2024-06-28 03:30:45,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4042, PETRI_PLACES=320, PETRI_TRANSITIONS=273} [2024-06-28 03:30:45,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-28 03:30:45,190 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 273 transitions, 4042 flow [2024-06-28 03:30:45,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:45,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:45,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:45,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:30:45,191 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:45,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1865095327, now seen corresponding path program 6 times [2024-06-28 03:30:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050909031] [2024-06-28 03:30:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:45,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:45,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050909031] [2024-06-28 03:30:45,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050909031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:45,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:45,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:45,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088243977] [2024-06-28 03:30:45,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:45,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:45,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:46,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:46,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 273 transitions, 4042 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:46,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:46,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:46,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:46,442 INFO L124 PetriNetUnfolderBase]: 743/1320 cut-off events. [2024-06-28 03:30:46,442 INFO L125 PetriNetUnfolderBase]: For 114046/114046 co-relation queries the response was YES. [2024-06-28 03:30:46,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 1320 events. 743/1320 cut-off events. For 114046/114046 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7030 event pairs, 239 based on Foata normal form. 3/1323 useless extension candidates. Maximal degree in co-relation 10312. Up to 1275 conditions per place. [2024-06-28 03:30:46,456 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 19 changer transitions 0/284 dead transitions. [2024-06-28 03:30:46,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 284 transitions, 4638 flow [2024-06-28 03:30:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:30:46,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:30:46,457 INFO L175 Difference]: Start difference. First operand has 320 places, 273 transitions, 4042 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:30:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 284 transitions, 4638 flow [2024-06-28 03:30:46,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 284 transitions, 4398 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:46,860 INFO L231 Difference]: Finished difference. Result has 323 places, 273 transitions, 3847 flow [2024-06-28 03:30:46,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3847, PETRI_PLACES=323, PETRI_TRANSITIONS=273} [2024-06-28 03:30:46,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 03:30:46,861 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 273 transitions, 3847 flow [2024-06-28 03:30:46,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:46,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:46,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:30:46,861 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:46,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 919401298, now seen corresponding path program 18 times [2024-06-28 03:30:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914565165] [2024-06-28 03:30:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:47,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914565165] [2024-06-28 03:30:47,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914565165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:47,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:47,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:47,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463495556] [2024-06-28 03:30:47,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:47,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:47,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:47,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:47,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:47,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 273 transitions, 3847 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:47,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:47,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:47,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:47,861 INFO L124 PetriNetUnfolderBase]: 759/1346 cut-off events. [2024-06-28 03:30:47,861 INFO L125 PetriNetUnfolderBase]: For 119794/119794 co-relation queries the response was YES. [2024-06-28 03:30:47,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 1346 events. 759/1346 cut-off events. For 119794/119794 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7167 event pairs, 131 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 10412. Up to 637 conditions per place. [2024-06-28 03:30:47,876 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 133 changer transitions 0/296 dead transitions. [2024-06-28 03:30:47,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 296 transitions, 5179 flow [2024-06-28 03:30:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:30:47,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:30:47,877 INFO L175 Difference]: Start difference. First operand has 323 places, 273 transitions, 3847 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:30:47,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 296 transitions, 5179 flow [2024-06-28 03:30:48,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 296 transitions, 5062 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:30:48,310 INFO L231 Difference]: Finished difference. Result has 322 places, 278 transitions, 4194 flow [2024-06-28 03:30:48,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4194, PETRI_PLACES=322, PETRI_TRANSITIONS=278} [2024-06-28 03:30:48,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 03:30:48,311 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 278 transitions, 4194 flow [2024-06-28 03:30:48,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:48,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:48,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:48,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:30:48,312 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:48,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1173411564, now seen corresponding path program 20 times [2024-06-28 03:30:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:48,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654639075] [2024-06-28 03:30:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:49,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:49,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654639075] [2024-06-28 03:30:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654639075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:49,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:49,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:49,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19681809] [2024-06-28 03:30:49,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:49,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:49,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:49,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 278 transitions, 4194 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:49,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:49,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:49,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:49,583 INFO L124 PetriNetUnfolderBase]: 756/1341 cut-off events. [2024-06-28 03:30:49,584 INFO L125 PetriNetUnfolderBase]: For 115995/115995 co-relation queries the response was YES. [2024-06-28 03:30:49,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1341 events. 756/1341 cut-off events. For 115995/115995 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7155 event pairs, 99 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 10441. Up to 1123 conditions per place. [2024-06-28 03:30:49,598 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 228 selfloop transitions, 61 changer transitions 0/291 dead transitions. [2024-06-28 03:30:49,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 291 transitions, 4816 flow [2024-06-28 03:30:49,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:30:49,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:30:49,599 INFO L175 Difference]: Start difference. First operand has 322 places, 278 transitions, 4194 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:30:49,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 291 transitions, 4816 flow [2024-06-28 03:30:50,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 291 transitions, 4477 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:50,042 INFO L231 Difference]: Finished difference. Result has 324 places, 278 transitions, 3981 flow [2024-06-28 03:30:50,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3981, PETRI_PLACES=324, PETRI_TRANSITIONS=278} [2024-06-28 03:30:50,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 03:30:50,043 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 278 transitions, 3981 flow [2024-06-28 03:30:50,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:50,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:50,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:50,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:30:50,043 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:50,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 924763678, now seen corresponding path program 19 times [2024-06-28 03:30:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:50,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058069558] [2024-06-28 03:30:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058069558] [2024-06-28 03:30:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058069558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:50,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:50,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427146618] [2024-06-28 03:30:50,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:50,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:50,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 278 transitions, 3981 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:50,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:50,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:50,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:51,033 INFO L124 PetriNetUnfolderBase]: 762/1351 cut-off events. [2024-06-28 03:30:51,033 INFO L125 PetriNetUnfolderBase]: For 118484/118484 co-relation queries the response was YES. [2024-06-28 03:30:51,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 1351 events. 762/1351 cut-off events. For 118484/118484 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7216 event pairs, 131 based on Foata normal form. 2/1353 useless extension candidates. Maximal degree in co-relation 10142. Up to 634 conditions per place. [2024-06-28 03:30:51,047 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 118 changer transitions 0/298 dead transitions. [2024-06-28 03:30:51,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 298 transitions, 5243 flow [2024-06-28 03:30:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:30:51,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:30:51,048 INFO L175 Difference]: Start difference. First operand has 324 places, 278 transitions, 3981 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:30:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 298 transitions, 5243 flow [2024-06-28 03:30:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 298 transitions, 5050 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:51,488 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 4097 flow [2024-06-28 03:30:51,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3788, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4097, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-28 03:30:51,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 03:30:51,489 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 4097 flow [2024-06-28 03:30:51,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:51,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:51,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:51,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:30:51,489 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:51,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash 924973207, now seen corresponding path program 7 times [2024-06-28 03:30:51,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:51,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19697920] [2024-06-28 03:30:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:51,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19697920] [2024-06-28 03:30:52,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19697920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:52,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:52,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:52,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537040692] [2024-06-28 03:30:52,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:52,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 4097 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:52,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:52,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:52,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:52,648 INFO L124 PetriNetUnfolderBase]: 758/1346 cut-off events. [2024-06-28 03:30:52,648 INFO L125 PetriNetUnfolderBase]: For 111765/111765 co-relation queries the response was YES. [2024-06-28 03:30:52,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10078 conditions, 1346 events. 758/1346 cut-off events. For 111765/111765 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7199 event pairs, 126 based on Foata normal form. 3/1349 useless extension candidates. Maximal degree in co-relation 9933. Up to 789 conditions per place. [2024-06-28 03:30:52,663 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 173 selfloop transitions, 122 changer transitions 0/297 dead transitions. [2024-06-28 03:30:52,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 297 transitions, 5111 flow [2024-06-28 03:30:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:30:52,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:30:52,664 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 4097 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:30:52,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 297 transitions, 5111 flow [2024-06-28 03:30:53,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 297 transitions, 4585 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-28 03:30:53,081 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 3824 flow [2024-06-28 03:30:53,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-28 03:30:53,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 03:30:53,082 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 3824 flow [2024-06-28 03:30:53,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:53,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:53,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:53,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:30:53,082 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:53,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 20 times [2024-06-28 03:30:53,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:53,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058473357] [2024-06-28 03:30:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058473357] [2024-06-28 03:30:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058473357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:53,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:53,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84961014] [2024-06-28 03:30:53,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:53,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:53,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:53,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:53,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 3824 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:53,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:53,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:53,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:54,062 INFO L124 PetriNetUnfolderBase]: 760/1350 cut-off events. [2024-06-28 03:30:54,063 INFO L125 PetriNetUnfolderBase]: For 109319/109319 co-relation queries the response was YES. [2024-06-28 03:30:54,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9767 conditions, 1350 events. 760/1350 cut-off events. For 109319/109319 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7275 event pairs, 130 based on Foata normal form. 4/1354 useless extension candidates. Maximal degree in co-relation 9622. Up to 632 conditions per place. [2024-06-28 03:30:54,078 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 121 changer transitions 0/299 dead transitions. [2024-06-28 03:30:54,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 299 transitions, 4918 flow [2024-06-28 03:30:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:30:54,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:30:54,079 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 3824 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:30:54,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 299 transitions, 4918 flow [2024-06-28 03:30:54,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 299 transitions, 4463 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:30:54,443 INFO L231 Difference]: Finished difference. Result has 324 places, 282 transitions, 3693 flow [2024-06-28 03:30:54,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3693, PETRI_PLACES=324, PETRI_TRANSITIONS=282} [2024-06-28 03:30:54,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 03:30:54,443 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 282 transitions, 3693 flow [2024-06-28 03:30:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:54,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:54,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:54,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:30:54,444 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:54,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 21 times [2024-06-28 03:30:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224632931] [2024-06-28 03:30:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:55,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224632931] [2024-06-28 03:30:55,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224632931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:55,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:55,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70138250] [2024-06-28 03:30:55,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:55,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:55,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:55,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 282 transitions, 3693 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:55,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:55,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:55,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:55,449 INFO L124 PetriNetUnfolderBase]: 754/1340 cut-off events. [2024-06-28 03:30:55,450 INFO L125 PetriNetUnfolderBase]: For 92423/92423 co-relation queries the response was YES. [2024-06-28 03:30:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9379 conditions, 1340 events. 754/1340 cut-off events. For 92423/92423 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7192 event pairs, 130 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 9233. Up to 628 conditions per place. [2024-06-28 03:30:55,463 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 120 changer transitions 0/298 dead transitions. [2024-06-28 03:30:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 298 transitions, 4529 flow [2024-06-28 03:30:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:30:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:30:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:30:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:30:55,464 INFO L175 Difference]: Start difference. First operand has 324 places, 282 transitions, 3693 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:30:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 298 transitions, 4529 flow [2024-06-28 03:30:55,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 298 transitions, 4106 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:55,841 INFO L231 Difference]: Finished difference. Result has 326 places, 282 transitions, 3515 flow [2024-06-28 03:30:55,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3515, PETRI_PLACES=326, PETRI_TRANSITIONS=282} [2024-06-28 03:30:55,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 03:30:55,841 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 282 transitions, 3515 flow [2024-06-28 03:30:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:55,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:55,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:55,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:30:55,842 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:55,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 738158287, now seen corresponding path program 1 times [2024-06-28 03:30:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778070093] [2024-06-28 03:30:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:56,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778070093] [2024-06-28 03:30:56,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778070093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:56,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:56,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:30:56,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761223611] [2024-06-28 03:30:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:56,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:30:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:30:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:30:56,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:56,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 282 transitions, 3515 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:56,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:56,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:56,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:57,061 INFO L124 PetriNetUnfolderBase]: 758/1348 cut-off events. [2024-06-28 03:30:57,061 INFO L125 PetriNetUnfolderBase]: For 92383/92383 co-relation queries the response was YES. [2024-06-28 03:30:57,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9244 conditions, 1348 events. 758/1348 cut-off events. For 92383/92383 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7260 event pairs, 160 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 9097. Up to 1255 conditions per place. [2024-06-28 03:30:57,073 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 26 changer transitions 0/303 dead transitions. [2024-06-28 03:30:57,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 303 transitions, 4181 flow [2024-06-28 03:30:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:30:57,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 03:30:57,074 INFO L175 Difference]: Start difference. First operand has 326 places, 282 transitions, 3515 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:30:57,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 303 transitions, 4181 flow [2024-06-28 03:30:57,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 303 transitions, 3917 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:30:57,452 INFO L231 Difference]: Finished difference. Result has 327 places, 283 transitions, 3323 flow [2024-06-28 03:30:57,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3251, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3323, PETRI_PLACES=327, PETRI_TRANSITIONS=283} [2024-06-28 03:30:57,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 03:30:57,453 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 283 transitions, 3323 flow [2024-06-28 03:30:57,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:57,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:57,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:57,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:30:57,453 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:57,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:57,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1992674625, now seen corresponding path program 2 times [2024-06-28 03:30:57,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:57,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021635616] [2024-06-28 03:30:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:58,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021635616] [2024-06-28 03:30:58,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021635616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:58,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:58,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:30:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230518008] [2024-06-28 03:30:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:58,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:30:58,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:30:58,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:30:58,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:58,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 283 transitions, 3323 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:58,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:58,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:58,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:58,645 INFO L124 PetriNetUnfolderBase]: 762/1356 cut-off events. [2024-06-28 03:30:58,645 INFO L125 PetriNetUnfolderBase]: For 94204/94204 co-relation queries the response was YES. [2024-06-28 03:30:58,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9058 conditions, 1356 events. 762/1356 cut-off events. For 94204/94204 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7321 event pairs, 129 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 8910. Up to 1228 conditions per place. [2024-06-28 03:30:58,660 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 28 changer transitions 0/304 dead transitions. [2024-06-28 03:30:58,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 304 transitions, 3991 flow [2024-06-28 03:30:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:30:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:30:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:30:58,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:30:58,661 INFO L175 Difference]: Start difference. First operand has 327 places, 283 transitions, 3323 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:30:58,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 304 transitions, 3991 flow [2024-06-28 03:30:59,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 304 transitions, 3929 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:30:59,093 INFO L231 Difference]: Finished difference. Result has 329 places, 284 transitions, 3339 flow [2024-06-28 03:30:59,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3339, PETRI_PLACES=329, PETRI_TRANSITIONS=284} [2024-06-28 03:30:59,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 03:30:59,093 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 284 transitions, 3339 flow [2024-06-28 03:30:59,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:59,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:59,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:59,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:30:59,094 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:30:59,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash 101524471, now seen corresponding path program 3 times [2024-06-28 03:30:59,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:59,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633750071] [2024-06-28 03:30:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:59,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633750071] [2024-06-28 03:30:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633750071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:59,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:59,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:30:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099227440] [2024-06-28 03:30:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:30:59,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:30:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:30:59,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:30:59,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 284 transitions, 3339 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:59,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:59,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:30:59,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:00,366 INFO L124 PetriNetUnfolderBase]: 773/1377 cut-off events. [2024-06-28 03:31:00,366 INFO L125 PetriNetUnfolderBase]: For 104825/104825 co-relation queries the response was YES. [2024-06-28 03:31:00,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9393 conditions, 1377 events. 773/1377 cut-off events. For 104825/104825 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7465 event pairs, 156 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 9244. Up to 1240 conditions per place. [2024-06-28 03:31:00,381 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 270 selfloop transitions, 34 changer transitions 0/306 dead transitions. [2024-06-28 03:31:00,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 306 transitions, 4227 flow [2024-06-28 03:31:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:31:00,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:31:00,382 INFO L175 Difference]: Start difference. First operand has 329 places, 284 transitions, 3339 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:31:00,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 306 transitions, 4227 flow [2024-06-28 03:31:00,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 306 transitions, 4159 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:00,888 INFO L231 Difference]: Finished difference. Result has 331 places, 286 transitions, 3381 flow [2024-06-28 03:31:00,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3381, PETRI_PLACES=331, PETRI_TRANSITIONS=286} [2024-06-28 03:31:00,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 03:31:00,893 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 286 transitions, 3381 flow [2024-06-28 03:31:00,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:00,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:00,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:00,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:31:00,895 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:00,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash 110910217, now seen corresponding path program 1 times [2024-06-28 03:31:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:00,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74028597] [2024-06-28 03:31:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:01,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:01,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74028597] [2024-06-28 03:31:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74028597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318665015] [2024-06-28 03:31:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:01,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:01,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:01,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 286 transitions, 3381 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:01,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:01,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:01,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:02,147 INFO L124 PetriNetUnfolderBase]: 776/1382 cut-off events. [2024-06-28 03:31:02,148 INFO L125 PetriNetUnfolderBase]: For 103234/103234 co-relation queries the response was YES. [2024-06-28 03:31:02,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9482 conditions, 1382 events. 776/1382 cut-off events. For 103234/103234 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7517 event pairs, 161 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 9332. Up to 1281 conditions per place. [2024-06-28 03:31:02,162 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 38 changer transitions 0/307 dead transitions. [2024-06-28 03:31:02,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 307 transitions, 4121 flow [2024-06-28 03:31:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:31:02,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:31:02,163 INFO L175 Difference]: Start difference. First operand has 331 places, 286 transitions, 3381 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:31:02,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 307 transitions, 4121 flow [2024-06-28 03:31:02,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 307 transitions, 4059 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:02,585 INFO L231 Difference]: Finished difference. Result has 335 places, 288 transitions, 3475 flow [2024-06-28 03:31:02,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3475, PETRI_PLACES=335, PETRI_TRANSITIONS=288} [2024-06-28 03:31:02,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-28 03:31:02,586 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 288 transitions, 3475 flow [2024-06-28 03:31:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:02,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:02,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:31:02,586 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:02,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 110750071, now seen corresponding path program 4 times [2024-06-28 03:31:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144667190] [2024-06-28 03:31:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144667190] [2024-06-28 03:31:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144667190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:03,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:03,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453875975] [2024-06-28 03:31:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:03,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 288 transitions, 3475 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:03,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:03,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:03,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:03,998 INFO L124 PetriNetUnfolderBase]: 780/1390 cut-off events. [2024-06-28 03:31:03,998 INFO L125 PetriNetUnfolderBase]: For 110216/110216 co-relation queries the response was YES. [2024-06-28 03:31:04,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 1390 events. 780/1390 cut-off events. For 110216/110216 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7541 event pairs, 158 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 9429. Up to 1273 conditions per place. [2024-06-28 03:31:04,013 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 35 changer transitions 0/309 dead transitions. [2024-06-28 03:31:04,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 309 transitions, 4357 flow [2024-06-28 03:31:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:31:04,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:31:04,014 INFO L175 Difference]: Start difference. First operand has 335 places, 288 transitions, 3475 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:31:04,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 309 transitions, 4357 flow [2024-06-28 03:31:04,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 309 transitions, 4251 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:04,498 INFO L231 Difference]: Finished difference. Result has 337 places, 289 transitions, 3459 flow [2024-06-28 03:31:04,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3459, PETRI_PLACES=337, PETRI_TRANSITIONS=289} [2024-06-28 03:31:04,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-28 03:31:04,499 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 289 transitions, 3459 flow [2024-06-28 03:31:04,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:04,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:04,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:31:04,499 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:04,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash -147706229, now seen corresponding path program 5 times [2024-06-28 03:31:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563759347] [2024-06-28 03:31:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:05,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:05,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563759347] [2024-06-28 03:31:05,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563759347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:05,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:05,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999391759] [2024-06-28 03:31:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:05,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:05,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 289 transitions, 3459 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:05,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:05,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:05,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:05,755 INFO L124 PetriNetUnfolderBase]: 777/1385 cut-off events. [2024-06-28 03:31:05,755 INFO L125 PetriNetUnfolderBase]: For 102308/102308 co-relation queries the response was YES. [2024-06-28 03:31:05,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1385 events. 777/1385 cut-off events. For 102308/102308 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7526 event pairs, 162 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 9197. Up to 1287 conditions per place. [2024-06-28 03:31:05,770 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 271 selfloop transitions, 35 changer transitions 0/308 dead transitions. [2024-06-28 03:31:05,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 308 transitions, 4129 flow [2024-06-28 03:31:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:31:05,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:31:05,771 INFO L175 Difference]: Start difference. First operand has 337 places, 289 transitions, 3459 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:31:05,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 308 transitions, 4129 flow [2024-06-28 03:31:06,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 308 transitions, 4034 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:06,199 INFO L231 Difference]: Finished difference. Result has 339 places, 289 transitions, 3439 flow [2024-06-28 03:31:06,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3439, PETRI_PLACES=339, PETRI_TRANSITIONS=289} [2024-06-28 03:31:06,200 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 03:31:06,200 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 289 transitions, 3439 flow [2024-06-28 03:31:06,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:06,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:06,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:06,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:31:06,200 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:06,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:06,200 INFO L85 PathProgramCache]: Analyzing trace with hash 882511769, now seen corresponding path program 6 times [2024-06-28 03:31:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841609395] [2024-06-28 03:31:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:06,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:06,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841609395] [2024-06-28 03:31:06,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841609395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:06,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:06,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997269724] [2024-06-28 03:31:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:06,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:07,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:07,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 289 transitions, 3439 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:07,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:07,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:07,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:07,499 INFO L124 PetriNetUnfolderBase]: 781/1393 cut-off events. [2024-06-28 03:31:07,500 INFO L125 PetriNetUnfolderBase]: For 104066/104066 co-relation queries the response was YES. [2024-06-28 03:31:07,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9375 conditions, 1393 events. 781/1393 cut-off events. For 104066/104066 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7575 event pairs, 135 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 9221. Up to 1300 conditions per place. [2024-06-28 03:31:07,515 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 25 changer transitions 0/309 dead transitions. [2024-06-28 03:31:07,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 309 transitions, 4121 flow [2024-06-28 03:31:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:31:07,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 03:31:07,516 INFO L175 Difference]: Start difference. First operand has 339 places, 289 transitions, 3439 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:31:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 309 transitions, 4121 flow [2024-06-28 03:31:07,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 309 transitions, 4048 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:07,972 INFO L231 Difference]: Finished difference. Result has 340 places, 290 transitions, 3442 flow [2024-06-28 03:31:07,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3442, PETRI_PLACES=340, PETRI_TRANSITIONS=290} [2024-06-28 03:31:07,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 03:31:07,973 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 290 transitions, 3442 flow [2024-06-28 03:31:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:07,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:07,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:07,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:31:07,973 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:07,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash 940604219, now seen corresponding path program 7 times [2024-06-28 03:31:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284026447] [2024-06-28 03:31:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:08,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:08,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284026447] [2024-06-28 03:31:08,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284026447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:08,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:08,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:08,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168034147] [2024-06-28 03:31:08,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:08,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:08,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:08,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 290 transitions, 3442 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:08,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:08,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:08,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:09,326 INFO L124 PetriNetUnfolderBase]: 792/1414 cut-off events. [2024-06-28 03:31:09,326 INFO L125 PetriNetUnfolderBase]: For 116809/116809 co-relation queries the response was YES. [2024-06-28 03:31:09,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9722 conditions, 1414 events. 792/1414 cut-off events. For 116809/116809 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7744 event pairs, 138 based on Foata normal form. 2/1416 useless extension candidates. Maximal degree in co-relation 9567. Up to 1277 conditions per place. [2024-06-28 03:31:09,341 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 276 selfloop transitions, 33 changer transitions 0/311 dead transitions. [2024-06-28 03:31:09,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 311 transitions, 4356 flow [2024-06-28 03:31:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:31:09,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:31:09,342 INFO L175 Difference]: Start difference. First operand has 340 places, 290 transitions, 3442 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:31:09,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 311 transitions, 4356 flow [2024-06-28 03:31:09,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 311 transitions, 4290 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:09,842 INFO L231 Difference]: Finished difference. Result has 342 places, 292 transitions, 3492 flow [2024-06-28 03:31:09,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3492, PETRI_PLACES=342, PETRI_TRANSITIONS=292} [2024-06-28 03:31:09,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 03:31:09,843 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 292 transitions, 3492 flow [2024-06-28 03:31:09,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:09,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:09,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:09,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:31:09,843 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:09,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash -777624167, now seen corresponding path program 8 times [2024-06-28 03:31:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:09,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776839725] [2024-06-28 03:31:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:10,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:10,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776839725] [2024-06-28 03:31:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776839725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:10,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:10,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:10,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951039013] [2024-06-28 03:31:10,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:10,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:10,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 292 transitions, 3492 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:10,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:10,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:10,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:11,153 INFO L124 PetriNetUnfolderBase]: 796/1422 cut-off events. [2024-06-28 03:31:11,153 INFO L125 PetriNetUnfolderBase]: For 119178/119178 co-relation queries the response was YES. [2024-06-28 03:31:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9801 conditions, 1422 events. 796/1422 cut-off events. For 119178/119178 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7814 event pairs, 136 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 9645. Up to 1305 conditions per place. [2024-06-28 03:31:11,169 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 276 selfloop transitions, 34 changer transitions 0/312 dead transitions. [2024-06-28 03:31:11,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 312 transitions, 4394 flow [2024-06-28 03:31:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:31:11,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:31:11,170 INFO L175 Difference]: Start difference. First operand has 342 places, 292 transitions, 3492 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:31:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 312 transitions, 4394 flow [2024-06-28 03:31:11,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 312 transitions, 4322 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:11,675 INFO L231 Difference]: Finished difference. Result has 346 places, 293 transitions, 3516 flow [2024-06-28 03:31:11,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3516, PETRI_PLACES=346, PETRI_TRANSITIONS=293} [2024-06-28 03:31:11,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 03:31:11,676 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 293 transitions, 3516 flow [2024-06-28 03:31:11,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:11,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:11,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:31:11,676 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:11,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash 940724375, now seen corresponding path program 2 times [2024-06-28 03:31:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:11,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215605181] [2024-06-28 03:31:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:11,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:12,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215605181] [2024-06-28 03:31:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215605181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:12,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:12,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:12,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254435203] [2024-06-28 03:31:12,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:12,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:12,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:12,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 293 transitions, 3516 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:12,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:12,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:12,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:12,961 INFO L124 PetriNetUnfolderBase]: 793/1417 cut-off events. [2024-06-28 03:31:12,961 INFO L125 PetriNetUnfolderBase]: For 110334/110334 co-relation queries the response was YES. [2024-06-28 03:31:12,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9663 conditions, 1417 events. 793/1417 cut-off events. For 110334/110334 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7791 event pairs, 138 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 9505. Up to 1316 conditions per place. [2024-06-28 03:31:12,977 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 272 selfloop transitions, 37 changer transitions 0/311 dead transitions. [2024-06-28 03:31:12,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 311 transitions, 4194 flow [2024-06-28 03:31:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:31:12,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:31:12,978 INFO L175 Difference]: Start difference. First operand has 346 places, 293 transitions, 3516 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:31:12,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 311 transitions, 4194 flow [2024-06-28 03:31:13,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 311 transitions, 4087 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:13,464 INFO L231 Difference]: Finished difference. Result has 348 places, 293 transitions, 3491 flow [2024-06-28 03:31:13,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3491, PETRI_PLACES=348, PETRI_TRANSITIONS=293} [2024-06-28 03:31:13,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-28 03:31:13,464 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 293 transitions, 3491 flow [2024-06-28 03:31:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:13,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:13,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:31:13,465 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:13,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1020531309, now seen corresponding path program 9 times [2024-06-28 03:31:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148892353] [2024-06-28 03:31:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:14,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148892353] [2024-06-28 03:31:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148892353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:14,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105789309] [2024-06-28 03:31:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:14,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:14,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 293 transitions, 3491 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:14,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:14,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:14,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:14,809 INFO L124 PetriNetUnfolderBase]: 790/1412 cut-off events. [2024-06-28 03:31:14,809 INFO L125 PetriNetUnfolderBase]: For 106793/106793 co-relation queries the response was YES. [2024-06-28 03:31:14,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9409 conditions, 1412 events. 790/1412 cut-off events. For 106793/106793 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7758 event pairs, 137 based on Foata normal form. 2/1414 useless extension candidates. Maximal degree in co-relation 9250. Up to 1314 conditions per place. [2024-06-28 03:31:14,826 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 34 changer transitions 0/311 dead transitions. [2024-06-28 03:31:14,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 311 transitions, 4165 flow [2024-06-28 03:31:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:31:14,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:31:14,827 INFO L175 Difference]: Start difference. First operand has 348 places, 293 transitions, 3491 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:31:14,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 311 transitions, 4165 flow [2024-06-28 03:31:15,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 311 transitions, 3959 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-28 03:31:15,250 INFO L231 Difference]: Finished difference. Result has 346 places, 293 transitions, 3358 flow [2024-06-28 03:31:15,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3358, PETRI_PLACES=346, PETRI_TRANSITIONS=293} [2024-06-28 03:31:15,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 03:31:15,251 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 293 transitions, 3358 flow [2024-06-28 03:31:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:15,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:15,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:31:15,252 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:15,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1839735133, now seen corresponding path program 10 times [2024-06-28 03:31:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:15,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652883116] [2024-06-28 03:31:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:15,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:16,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652883116] [2024-06-28 03:31:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652883116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:16,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:16,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:16,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089659688] [2024-06-28 03:31:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:16,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:16,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:16,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:16,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 293 transitions, 3358 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:16,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:16,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:16,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:16,570 INFO L124 PetriNetUnfolderBase]: 794/1420 cut-off events. [2024-06-28 03:31:16,570 INFO L125 PetriNetUnfolderBase]: For 108147/108147 co-relation queries the response was YES. [2024-06-28 03:31:16,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9331 conditions, 1420 events. 794/1420 cut-off events. For 108147/108147 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7803 event pairs, 135 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 9171. Up to 1242 conditions per place. [2024-06-28 03:31:16,586 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 52 changer transitions 0/312 dead transitions. [2024-06-28 03:31:16,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 312 transitions, 4060 flow [2024-06-28 03:31:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:31:16,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:31:16,586 INFO L175 Difference]: Start difference. First operand has 346 places, 293 transitions, 3358 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:31:16,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 312 transitions, 4060 flow [2024-06-28 03:31:17,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 312 transitions, 3979 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:17,076 INFO L231 Difference]: Finished difference. Result has 347 places, 294 transitions, 3411 flow [2024-06-28 03:31:17,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3411, PETRI_PLACES=347, PETRI_TRANSITIONS=294} [2024-06-28 03:31:17,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-28 03:31:17,077 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 294 transitions, 3411 flow [2024-06-28 03:31:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:17,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:17,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:31:17,077 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:17,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash 121515715, now seen corresponding path program 11 times [2024-06-28 03:31:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:17,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971973652] [2024-06-28 03:31:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971973652] [2024-06-28 03:31:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971973652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:17,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:17,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559700435] [2024-06-28 03:31:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:17,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:18,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:18,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 294 transitions, 3411 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:18,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:18,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:18,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:18,440 INFO L124 PetriNetUnfolderBase]: 798/1428 cut-off events. [2024-06-28 03:31:18,440 INFO L125 PetriNetUnfolderBase]: For 108602/108602 co-relation queries the response was YES. [2024-06-28 03:31:18,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9427 conditions, 1428 events. 798/1428 cut-off events. For 108602/108602 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7863 event pairs, 135 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 9266. Up to 1236 conditions per place. [2024-06-28 03:31:18,456 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 53 changer transitions 0/313 dead transitions. [2024-06-28 03:31:18,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 313 transitions, 4113 flow [2024-06-28 03:31:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:31:18,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:31:18,457 INFO L175 Difference]: Start difference. First operand has 347 places, 294 transitions, 3411 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:31:18,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 313 transitions, 4113 flow [2024-06-28 03:31:18,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 313 transitions, 3984 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:18,906 INFO L231 Difference]: Finished difference. Result has 348 places, 295 transitions, 3420 flow [2024-06-28 03:31:18,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3420, PETRI_PLACES=348, PETRI_TRANSITIONS=295} [2024-06-28 03:31:18,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-28 03:31:18,907 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 295 transitions, 3420 flow [2024-06-28 03:31:18,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:18,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:18,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:18,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:31:18,908 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:18,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash 121400395, now seen corresponding path program 12 times [2024-06-28 03:31:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:18,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141149018] [2024-06-28 03:31:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:18,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:19,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141149018] [2024-06-28 03:31:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141149018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:19,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:19,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796780003] [2024-06-28 03:31:19,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:19,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:19,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:19,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 295 transitions, 3420 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:19,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:19,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:19,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:20,162 INFO L124 PetriNetUnfolderBase]: 809/1449 cut-off events. [2024-06-28 03:31:20,163 INFO L125 PetriNetUnfolderBase]: For 122315/122315 co-relation queries the response was YES. [2024-06-28 03:31:20,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9790 conditions, 1449 events. 809/1449 cut-off events. For 122315/122315 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8030 event pairs, 140 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 9629. Up to 1214 conditions per place. [2024-06-28 03:31:20,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 259 selfloop transitions, 55 changer transitions 0/316 dead transitions. [2024-06-28 03:31:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 316 transitions, 4368 flow [2024-06-28 03:31:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:31:20,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:31:20,180 INFO L175 Difference]: Start difference. First operand has 348 places, 295 transitions, 3420 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:31:20,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 316 transitions, 4368 flow [2024-06-28 03:31:20,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 316 transitions, 4240 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:20,739 INFO L231 Difference]: Finished difference. Result has 350 places, 297 transitions, 3464 flow [2024-06-28 03:31:20,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3464, PETRI_PLACES=350, PETRI_TRANSITIONS=297} [2024-06-28 03:31:20,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 03:31:20,740 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 297 transitions, 3464 flow [2024-06-28 03:31:20,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:20,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:20,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:20,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:31:20,740 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:20,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 298651885, now seen corresponding path program 13 times [2024-06-28 03:31:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:20,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046405688] [2024-06-28 03:31:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:21,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:21,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046405688] [2024-06-28 03:31:21,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046405688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:21,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50574464] [2024-06-28 03:31:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:21,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:21,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:21,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 297 transitions, 3464 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:21,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:21,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:21,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:21,928 INFO L124 PetriNetUnfolderBase]: 813/1457 cut-off events. [2024-06-28 03:31:21,928 INFO L125 PetriNetUnfolderBase]: For 124863/124863 co-relation queries the response was YES. [2024-06-28 03:31:21,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 1457 events. 813/1457 cut-off events. For 124863/124863 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8117 event pairs, 130 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 9696. Up to 1279 conditions per place. [2024-06-28 03:31:21,945 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 253 selfloop transitions, 61 changer transitions 0/316 dead transitions. [2024-06-28 03:31:21,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 316 transitions, 4180 flow [2024-06-28 03:31:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:31:21,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:31:21,946 INFO L175 Difference]: Start difference. First operand has 350 places, 297 transitions, 3464 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:31:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 316 transitions, 4180 flow [2024-06-28 03:31:22,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 316 transitions, 4073 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:22,498 INFO L231 Difference]: Finished difference. Result has 354 places, 298 transitions, 3515 flow [2024-06-28 03:31:22,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3515, PETRI_PLACES=354, PETRI_TRANSITIONS=298} [2024-06-28 03:31:22,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-28 03:31:22,498 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 298 transitions, 3515 flow [2024-06-28 03:31:22,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:22,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:22,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:22,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:31:22,499 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:22,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash 298898149, now seen corresponding path program 1 times [2024-06-28 03:31:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:22,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315861571] [2024-06-28 03:31:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:23,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:23,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315861571] [2024-06-28 03:31:23,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315861571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:23,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:23,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:23,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172657231] [2024-06-28 03:31:23,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:23,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:23,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:23,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:23,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:23,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 298 transitions, 3515 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:23,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:23,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:23,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:23,867 INFO L124 PetriNetUnfolderBase]: 833/1501 cut-off events. [2024-06-28 03:31:23,867 INFO L125 PetriNetUnfolderBase]: For 182764/182764 co-relation queries the response was YES. [2024-06-28 03:31:23,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 1501 events. 833/1501 cut-off events. For 182764/182764 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8371 event pairs, 140 based on Foata normal form. 12/1513 useless extension candidates. Maximal degree in co-relation 9966. Up to 1191 conditions per place. [2024-06-28 03:31:23,881 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 236 selfloop transitions, 71 changer transitions 14/323 dead transitions. [2024-06-28 03:31:23,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 323 transitions, 4297 flow [2024-06-28 03:31:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:31:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:31:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:31:23,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:31:23,881 INFO L175 Difference]: Start difference. First operand has 354 places, 298 transitions, 3515 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:31:23,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 323 transitions, 4297 flow [2024-06-28 03:31:24,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 323 transitions, 4159 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:24,424 INFO L231 Difference]: Finished difference. Result has 357 places, 290 transitions, 3403 flow [2024-06-28 03:31:24,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3403, PETRI_PLACES=357, PETRI_TRANSITIONS=290} [2024-06-28 03:31:24,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-28 03:31:24,425 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 290 transitions, 3403 flow [2024-06-28 03:31:24,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:24,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:24,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:24,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:31:24,425 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:24,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 292222795, now seen corresponding path program 14 times [2024-06-28 03:31:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421150754] [2024-06-28 03:31:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421150754] [2024-06-28 03:31:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421150754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740488176] [2024-06-28 03:31:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:25,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:25,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 290 transitions, 3403 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:25,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:25,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:25,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:25,714 INFO L124 PetriNetUnfolderBase]: 787/1435 cut-off events. [2024-06-28 03:31:25,714 INFO L125 PetriNetUnfolderBase]: For 127445/127445 co-relation queries the response was YES. [2024-06-28 03:31:25,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9680 conditions, 1435 events. 787/1435 cut-off events. For 127445/127445 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8136 event pairs, 138 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 9515. Up to 1257 conditions per place. [2024-06-28 03:31:25,731 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 56 changer transitions 0/309 dead transitions. [2024-06-28 03:31:25,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 309 transitions, 4099 flow [2024-06-28 03:31:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:31:25,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:31:25,732 INFO L175 Difference]: Start difference. First operand has 357 places, 290 transitions, 3403 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:31:25,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 309 transitions, 4099 flow [2024-06-28 03:31:26,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 309 transitions, 3935 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:26,269 INFO L231 Difference]: Finished difference. Result has 358 places, 291 transitions, 3381 flow [2024-06-28 03:31:26,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3381, PETRI_PLACES=358, PETRI_TRANSITIONS=291} [2024-06-28 03:31:26,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 03:31:26,269 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 291 transitions, 3381 flow [2024-06-28 03:31:26,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:26,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:26,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:26,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:31:26,270 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:26,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 292218145, now seen corresponding path program 15 times [2024-06-28 03:31:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:26,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714761399] [2024-06-28 03:31:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:26,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:27,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:27,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714761399] [2024-06-28 03:31:27,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714761399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:27,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:27,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644391430] [2024-06-28 03:31:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:27,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:27,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 291 transitions, 3381 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:27,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:27,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:27,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:27,612 INFO L124 PetriNetUnfolderBase]: 784/1430 cut-off events. [2024-06-28 03:31:27,612 INFO L125 PetriNetUnfolderBase]: For 118797/118797 co-relation queries the response was YES. [2024-06-28 03:31:27,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9374 conditions, 1430 events. 784/1430 cut-off events. For 118797/118797 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8126 event pairs, 137 based on Foata normal form. 2/1432 useless extension candidates. Maximal degree in co-relation 9208. Up to 1232 conditions per place. [2024-06-28 03:31:27,629 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 249 selfloop transitions, 58 changer transitions 0/309 dead transitions. [2024-06-28 03:31:27,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 309 transitions, 4049 flow [2024-06-28 03:31:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:31:27,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:31:27,630 INFO L175 Difference]: Start difference. First operand has 358 places, 291 transitions, 3381 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:31:27,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 309 transitions, 4049 flow [2024-06-28 03:31:28,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 309 transitions, 3905 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:28,138 INFO L231 Difference]: Finished difference. Result has 360 places, 291 transitions, 3357 flow [2024-06-28 03:31:28,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3357, PETRI_PLACES=360, PETRI_TRANSITIONS=291} [2024-06-28 03:31:28,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 03:31:28,139 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 291 transitions, 3357 flow [2024-06-28 03:31:28,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:28,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:28,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:28,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:31:28,139 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:28,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash 609883347, now seen corresponding path program 16 times [2024-06-28 03:31:28,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:28,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003723824] [2024-06-28 03:31:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:28,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:29,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003723824] [2024-06-28 03:31:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003723824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:29,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:29,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680300409] [2024-06-28 03:31:29,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:29,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:29,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:29,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 291 transitions, 3357 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:29,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:29,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:29,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:29,536 INFO L124 PetriNetUnfolderBase]: 788/1438 cut-off events. [2024-06-28 03:31:29,536 INFO L125 PetriNetUnfolderBase]: For 120712/120712 co-relation queries the response was YES. [2024-06-28 03:31:29,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9410 conditions, 1438 events. 788/1438 cut-off events. For 120712/120712 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8194 event pairs, 158 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 9243. Up to 1345 conditions per place. [2024-06-28 03:31:29,553 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 25 changer transitions 0/309 dead transitions. [2024-06-28 03:31:29,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 309 transitions, 4048 flow [2024-06-28 03:31:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:31:29,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:31:29,554 INFO L175 Difference]: Start difference. First operand has 360 places, 291 transitions, 3357 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:31:29,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 309 transitions, 4048 flow [2024-06-28 03:31:30,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 309 transitions, 3914 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:30,071 INFO L231 Difference]: Finished difference. Result has 361 places, 292 transitions, 3309 flow [2024-06-28 03:31:30,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3309, PETRI_PLACES=361, PETRI_TRANSITIONS=292} [2024-06-28 03:31:30,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-28 03:31:30,071 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 292 transitions, 3309 flow [2024-06-28 03:31:30,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:30,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:30,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:31:30,072 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:30,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 612684507, now seen corresponding path program 17 times [2024-06-28 03:31:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99935866] [2024-06-28 03:31:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:30,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99935866] [2024-06-28 03:31:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99935866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:30,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:30,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:30,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887925332] [2024-06-28 03:31:30,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:30,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:31,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:31,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 292 transitions, 3309 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:31,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:31,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:31,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:31,479 INFO L124 PetriNetUnfolderBase]: 792/1446 cut-off events. [2024-06-28 03:31:31,479 INFO L125 PetriNetUnfolderBase]: For 123030/123030 co-relation queries the response was YES. [2024-06-28 03:31:31,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 1446 events. 792/1446 cut-off events. For 123030/123030 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8249 event pairs, 160 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 9240. Up to 1348 conditions per place. [2024-06-28 03:31:31,495 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 273 selfloop transitions, 34 changer transitions 0/309 dead transitions. [2024-06-28 03:31:31,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 309 transitions, 4010 flow [2024-06-28 03:31:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:31:31,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 03:31:31,496 INFO L175 Difference]: Start difference. First operand has 361 places, 292 transitions, 3309 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:31:31,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 309 transitions, 4010 flow [2024-06-28 03:31:32,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 309 transitions, 3892 flow, removed 22 selfloop flow, removed 16 redundant places. [2024-06-28 03:31:32,056 INFO L231 Difference]: Finished difference. Result has 356 places, 293 transitions, 3298 flow [2024-06-28 03:31:32,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3298, PETRI_PLACES=356, PETRI_TRANSITIONS=293} [2024-06-28 03:31:32,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:31:32,056 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 293 transitions, 3298 flow [2024-06-28 03:31:32,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:32,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:32,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:31:32,056 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash 612684693, now seen corresponding path program 3 times [2024-06-28 03:31:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342638878] [2024-06-28 03:31:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:32,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:32,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342638878] [2024-06-28 03:31:32,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342638878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:32,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:32,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677865350] [2024-06-28 03:31:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:32,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:32,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:33,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:33,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 293 transitions, 3298 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:33,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:33,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:33,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:33,455 INFO L124 PetriNetUnfolderBase]: 789/1441 cut-off events. [2024-06-28 03:31:33,456 INFO L125 PetriNetUnfolderBase]: For 111999/111999 co-relation queries the response was YES. [2024-06-28 03:31:33,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9148 conditions, 1441 events. 789/1441 cut-off events. For 111999/111999 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8204 event pairs, 160 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 8987. Up to 1340 conditions per place. [2024-06-28 03:31:33,472 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 37 changer transitions 0/309 dead transitions. [2024-06-28 03:31:33,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 309 transitions, 3971 flow [2024-06-28 03:31:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:31:33,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 03:31:33,473 INFO L175 Difference]: Start difference. First operand has 356 places, 293 transitions, 3298 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:31:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 309 transitions, 3971 flow [2024-06-28 03:31:34,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 309 transitions, 3852 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:34,026 INFO L231 Difference]: Finished difference. Result has 358 places, 293 transitions, 3261 flow [2024-06-28 03:31:34,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3261, PETRI_PLACES=358, PETRI_TRANSITIONS=293} [2024-06-28 03:31:34,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 03:31:34,026 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 293 transitions, 3261 flow [2024-06-28 03:31:34,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:34,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:34,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:34,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:31:34,027 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:34,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 645830387, now seen corresponding path program 18 times [2024-06-28 03:31:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801978049] [2024-06-28 03:31:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801978049] [2024-06-28 03:31:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801978049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:34,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:34,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:34,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246176148] [2024-06-28 03:31:34,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:34,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:34,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:34,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:34,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 293 transitions, 3261 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:34,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:34,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:34,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:35,341 INFO L124 PetriNetUnfolderBase]: 793/1449 cut-off events. [2024-06-28 03:31:35,342 INFO L125 PetriNetUnfolderBase]: For 120264/120264 co-relation queries the response was YES. [2024-06-28 03:31:35,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 1449 events. 793/1449 cut-off events. For 120264/120264 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8281 event pairs, 157 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 9019. Up to 1225 conditions per place. [2024-06-28 03:31:35,365 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 250 selfloop transitions, 59 changer transitions 0/311 dead transitions. [2024-06-28 03:31:35,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 311 transitions, 3961 flow [2024-06-28 03:31:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:31:35,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:31:35,367 INFO L175 Difference]: Start difference. First operand has 358 places, 293 transitions, 3261 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:31:35,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 311 transitions, 3961 flow [2024-06-28 03:31:36,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 311 transitions, 3725 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 03:31:36,062 INFO L231 Difference]: Finished difference. Result has 356 places, 294 transitions, 3187 flow [2024-06-28 03:31:36,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3187, PETRI_PLACES=356, PETRI_TRANSITIONS=294} [2024-06-28 03:31:36,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:31:36,062 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 294 transitions, 3187 flow [2024-06-28 03:31:36,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:36,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:36,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:36,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:31:36,062 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:36,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash 645715067, now seen corresponding path program 19 times [2024-06-28 03:31:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110017141] [2024-06-28 03:31:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:36,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:36,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110017141] [2024-06-28 03:31:36,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110017141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:36,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:36,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:36,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963961152] [2024-06-28 03:31:36,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:36,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:36,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:37,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:37,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 294 transitions, 3187 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:37,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:37,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:37,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:37,479 INFO L124 PetriNetUnfolderBase]: 797/1457 cut-off events. [2024-06-28 03:31:37,479 INFO L125 PetriNetUnfolderBase]: For 122721/122721 co-relation queries the response was YES. [2024-06-28 03:31:37,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9223 conditions, 1457 events. 797/1457 cut-off events. For 122721/122721 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8316 event pairs, 158 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 9060. Up to 1161 conditions per place. [2024-06-28 03:31:37,493 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 251 selfloop transitions, 59 changer transitions 0/312 dead transitions. [2024-06-28 03:31:37,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 312 transitions, 3887 flow [2024-06-28 03:31:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:31:37,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:31:37,493 INFO L175 Difference]: Start difference. First operand has 356 places, 294 transitions, 3187 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:31:37,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 312 transitions, 3887 flow [2024-06-28 03:31:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 312 transitions, 3739 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:37,919 INFO L231 Difference]: Finished difference. Result has 356 places, 295 transitions, 3203 flow [2024-06-28 03:31:37,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3203, PETRI_PLACES=356, PETRI_TRANSITIONS=295} [2024-06-28 03:31:37,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:31:37,919 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 295 transitions, 3203 flow [2024-06-28 03:31:37,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:37,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:37,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:37,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:31:37,919 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:37,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1665319045, now seen corresponding path program 20 times [2024-06-28 03:31:37,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:37,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699979471] [2024-06-28 03:31:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699979471] [2024-06-28 03:31:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699979471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:38,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909704455] [2024-06-28 03:31:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:38,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:38,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 295 transitions, 3203 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:39,255 INFO L124 PetriNetUnfolderBase]: 801/1466 cut-off events. [2024-06-28 03:31:39,255 INFO L125 PetriNetUnfolderBase]: For 120990/120990 co-relation queries the response was YES. [2024-06-28 03:31:39,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 1466 events. 801/1466 cut-off events. For 120990/120990 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8407 event pairs, 125 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 9105. Up to 1199 conditions per place. [2024-06-28 03:31:39,271 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 79 changer transitions 0/312 dead transitions. [2024-06-28 03:31:39,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 312 transitions, 3913 flow [2024-06-28 03:31:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:31:39,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:31:39,272 INFO L175 Difference]: Start difference. First operand has 356 places, 295 transitions, 3203 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:31:39,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 312 transitions, 3913 flow [2024-06-28 03:31:39,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 312 transitions, 3763 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:39,716 INFO L231 Difference]: Finished difference. Result has 356 places, 296 transitions, 3257 flow [2024-06-28 03:31:39,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3257, PETRI_PLACES=356, PETRI_TRANSITIONS=296} [2024-06-28 03:31:39,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:31:39,716 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 296 transitions, 3257 flow [2024-06-28 03:31:39,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:39,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:39,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:39,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:31:39,717 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:39,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:39,718 INFO L85 PathProgramCache]: Analyzing trace with hash 19869481, now seen corresponding path program 21 times [2024-06-28 03:31:39,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:39,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323727911] [2024-06-28 03:31:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:40,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323727911] [2024-06-28 03:31:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323727911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:40,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190163391] [2024-06-28 03:31:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:40,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:40,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:40,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 296 transitions, 3257 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:40,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:40,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:40,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:41,102 INFO L124 PetriNetUnfolderBase]: 812/1486 cut-off events. [2024-06-28 03:31:41,102 INFO L125 PetriNetUnfolderBase]: For 132869/132869 co-relation queries the response was YES. [2024-06-28 03:31:41,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9703 conditions, 1486 events. 812/1486 cut-off events. For 132869/132869 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8561 event pairs, 126 based on Foata normal form. 2/1488 useless extension candidates. Maximal degree in co-relation 9542. Up to 1177 conditions per place. [2024-06-28 03:31:41,119 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 230 selfloop transitions, 83 changer transitions 0/315 dead transitions. [2024-06-28 03:31:41,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 315 transitions, 4239 flow [2024-06-28 03:31:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:31:41,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:31:41,120 INFO L175 Difference]: Start difference. First operand has 356 places, 296 transitions, 3257 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:31:41,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 315 transitions, 4239 flow [2024-06-28 03:31:41,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 315 transitions, 4045 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:41,718 INFO L231 Difference]: Finished difference. Result has 357 places, 298 transitions, 3319 flow [2024-06-28 03:31:41,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3319, PETRI_PLACES=357, PETRI_TRANSITIONS=298} [2024-06-28 03:31:41,719 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-28 03:31:41,719 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 298 transitions, 3319 flow [2024-06-28 03:31:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:41,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:41,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:41,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:31:41,719 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:41,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1836021475, now seen corresponding path program 22 times [2024-06-28 03:31:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562079946] [2024-06-28 03:31:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562079946] [2024-06-28 03:31:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562079946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519950756] [2024-06-28 03:31:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:42,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:42,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:42,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:42,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 298 transitions, 3319 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:42,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:42,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:42,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:43,112 INFO L124 PetriNetUnfolderBase]: 816/1494 cut-off events. [2024-06-28 03:31:43,113 INFO L125 PetriNetUnfolderBase]: For 133009/133009 co-relation queries the response was YES. [2024-06-28 03:31:43,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9763 conditions, 1494 events. 816/1494 cut-off events. For 133009/133009 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8596 event pairs, 144 based on Foata normal form. 2/1496 useless extension candidates. Maximal degree in co-relation 9602. Up to 1228 conditions per place. [2024-06-28 03:31:43,127 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 73 changer transitions 0/315 dead transitions. [2024-06-28 03:31:43,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 315 transitions, 4039 flow [2024-06-28 03:31:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:31:43,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:31:43,127 INFO L175 Difference]: Start difference. First operand has 357 places, 298 transitions, 3319 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:31:43,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 315 transitions, 4039 flow [2024-06-28 03:31:43,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 315 transitions, 3891 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:43,679 INFO L231 Difference]: Finished difference. Result has 360 places, 299 transitions, 3367 flow [2024-06-28 03:31:43,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3367, PETRI_PLACES=360, PETRI_TRANSITIONS=299} [2024-06-28 03:31:43,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 03:31:43,679 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 299 transitions, 3367 flow [2024-06-28 03:31:43,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:43,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:43,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:43,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:31:43,680 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:43,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1836026125, now seen corresponding path program 23 times [2024-06-28 03:31:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143007537] [2024-06-28 03:31:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:43,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:44,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143007537] [2024-06-28 03:31:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143007537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:44,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:44,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:44,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879614278] [2024-06-28 03:31:44,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:44,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:44,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:44,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:44,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:44,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 299 transitions, 3367 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:44,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:44,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:44,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:44,949 INFO L124 PetriNetUnfolderBase]: 820/1502 cut-off events. [2024-06-28 03:31:44,949 INFO L125 PetriNetUnfolderBase]: For 132864/132864 co-relation queries the response was YES. [2024-06-28 03:31:44,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9895 conditions, 1502 events. 820/1502 cut-off events. For 132864/132864 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8670 event pairs, 142 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 9733. Up to 1208 conditions per place. [2024-06-28 03:31:44,967 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 75 changer transitions 0/316 dead transitions. [2024-06-28 03:31:44,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 316 transitions, 4087 flow [2024-06-28 03:31:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:31:44,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:31:44,968 INFO L175 Difference]: Start difference. First operand has 360 places, 299 transitions, 3367 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:31:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 316 transitions, 4087 flow [2024-06-28 03:31:45,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 316 transitions, 3909 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:45,564 INFO L231 Difference]: Finished difference. Result has 362 places, 300 transitions, 3391 flow [2024-06-28 03:31:45,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3391, PETRI_PLACES=362, PETRI_TRANSITIONS=300} [2024-06-28 03:31:45,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-28 03:31:45,564 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 300 transitions, 3391 flow [2024-06-28 03:31:45,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:45,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:45,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:45,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:31:45,564 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:45,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1658889955, now seen corresponding path program 24 times [2024-06-28 03:31:45,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:45,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558732413] [2024-06-28 03:31:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558732413] [2024-06-28 03:31:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558732413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830650163] [2024-06-28 03:31:46,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:46,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:46,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 300 transitions, 3391 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:46,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:46,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:46,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:46,904 INFO L124 PetriNetUnfolderBase]: 817/1497 cut-off events. [2024-06-28 03:31:46,904 INFO L125 PetriNetUnfolderBase]: For 121652/121652 co-relation queries the response was YES. [2024-06-28 03:31:46,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 1497 events. 817/1497 cut-off events. For 121652/121652 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8657 event pairs, 129 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 9435. Up to 1231 conditions per place. [2024-06-28 03:31:46,922 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 227 selfloop transitions, 87 changer transitions 0/316 dead transitions. [2024-06-28 03:31:46,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 316 transitions, 4071 flow [2024-06-28 03:31:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:31:46,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:31:46,923 INFO L175 Difference]: Start difference. First operand has 362 places, 300 transitions, 3391 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:31:46,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 316 transitions, 4071 flow [2024-06-28 03:31:47,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 316 transitions, 3861 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:47,493 INFO L231 Difference]: Finished difference. Result has 364 places, 300 transitions, 3361 flow [2024-06-28 03:31:47,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3361, PETRI_PLACES=364, PETRI_TRANSITIONS=300} [2024-06-28 03:31:47,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 03:31:47,493 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 300 transitions, 3361 flow [2024-06-28 03:31:47,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:47,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:47,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:47,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:31:47,494 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:47,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash 26549485, now seen corresponding path program 2 times [2024-06-28 03:31:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160259764] [2024-06-28 03:31:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:48,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160259764] [2024-06-28 03:31:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160259764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:48,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787553774] [2024-06-28 03:31:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:48,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:48,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 300 transitions, 3361 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:48,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:48,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:48,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:48,833 INFO L124 PetriNetUnfolderBase]: 837/1541 cut-off events. [2024-06-28 03:31:48,833 INFO L125 PetriNetUnfolderBase]: For 186287/186287 co-relation queries the response was YES. [2024-06-28 03:31:48,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9759 conditions, 1541 events. 837/1541 cut-off events. For 186287/186287 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8927 event pairs, 133 based on Foata normal form. 12/1553 useless extension candidates. Maximal degree in co-relation 9595. Up to 1102 conditions per place. [2024-06-28 03:31:48,850 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 105 changer transitions 12/323 dead transitions. [2024-06-28 03:31:48,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 323 transitions, 4139 flow [2024-06-28 03:31:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:31:48,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:31:48,850 INFO L175 Difference]: Start difference. First operand has 364 places, 300 transitions, 3361 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:31:48,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 323 transitions, 4139 flow [2024-06-28 03:31:49,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 323 transitions, 3943 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:49,363 INFO L231 Difference]: Finished difference. Result has 365 places, 294 transitions, 3322 flow [2024-06-28 03:31:49,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3322, PETRI_PLACES=365, PETRI_TRANSITIONS=294} [2024-06-28 03:31:49,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 03:31:49,364 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 294 transitions, 3322 flow [2024-06-28 03:31:49,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:49,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:49,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:49,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:31:49,364 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:49,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash -150948269, now seen corresponding path program 25 times [2024-06-28 03:31:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:49,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770032215] [2024-06-28 03:31:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:50,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:50,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770032215] [2024-06-28 03:31:50,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770032215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:50,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:50,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:31:50,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452200044] [2024-06-28 03:31:50,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:31:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:31:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:31:50,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:50,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 294 transitions, 3322 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:50,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:50,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:50,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:50,484 INFO L124 PetriNetUnfolderBase]: 797/1481 cut-off events. [2024-06-28 03:31:50,484 INFO L125 PetriNetUnfolderBase]: For 118762/118762 co-relation queries the response was YES. [2024-06-28 03:31:50,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9455 conditions, 1481 events. 797/1481 cut-off events. For 118762/118762 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8703 event pairs, 145 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 9291. Up to 1091 conditions per place. [2024-06-28 03:31:50,502 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 226 selfloop transitions, 83 changer transitions 0/311 dead transitions. [2024-06-28 03:31:50,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 311 transitions, 4026 flow [2024-06-28 03:31:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:31:50,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:31:50,503 INFO L175 Difference]: Start difference. First operand has 365 places, 294 transitions, 3322 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:31:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 311 transitions, 4026 flow [2024-06-28 03:31:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 311 transitions, 3769 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-28 03:31:50,943 INFO L231 Difference]: Finished difference. Result has 363 places, 295 transitions, 3281 flow [2024-06-28 03:31:50,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3281, PETRI_PLACES=363, PETRI_TRANSITIONS=295} [2024-06-28 03:31:50,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-28 03:31:50,943 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 295 transitions, 3281 flow [2024-06-28 03:31:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:50,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:50,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:50,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:31:50,944 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:50,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2108250869, now seen corresponding path program 26 times [2024-06-28 03:31:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409659194] [2024-06-28 03:31:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:50,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409659194] [2024-06-28 03:31:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409659194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:51,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:31:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459560006] [2024-06-28 03:31:51,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:51,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:31:51,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:31:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:31:51,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:51,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 295 transitions, 3281 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:51,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:51,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:51,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:52,079 INFO L124 PetriNetUnfolderBase]: 801/1490 cut-off events. [2024-06-28 03:31:52,079 INFO L125 PetriNetUnfolderBase]: For 119722/119722 co-relation queries the response was YES. [2024-06-28 03:31:52,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 1490 events. 801/1490 cut-off events. For 119722/119722 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8761 event pairs, 142 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 9276. Up to 1134 conditions per place. [2024-06-28 03:31:52,097 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 91 changer transitions 0/310 dead transitions. [2024-06-28 03:31:52,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 310 transitions, 3987 flow [2024-06-28 03:31:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:31:52,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:31:52,101 INFO L175 Difference]: Start difference. First operand has 363 places, 295 transitions, 3281 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:31:52,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 310 transitions, 3987 flow [2024-06-28 03:31:52,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 310 transitions, 3783 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:31:52,752 INFO L231 Difference]: Finished difference. Result has 364 places, 296 transitions, 3309 flow [2024-06-28 03:31:52,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3309, PETRI_PLACES=364, PETRI_TRANSITIONS=296} [2024-06-28 03:31:52,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 03:31:52,753 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 296 transitions, 3309 flow [2024-06-28 03:31:52,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:52,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:52,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:52,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:31:52,753 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:52,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1567982527, now seen corresponding path program 27 times [2024-06-28 03:31:52,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:52,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737397188] [2024-06-28 03:31:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:52,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737397188] [2024-06-28 03:31:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737397188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:53,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847321397] [2024-06-28 03:31:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:53,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:53,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:53,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:53,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 296 transitions, 3309 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:53,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:53,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:53,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:54,048 INFO L124 PetriNetUnfolderBase]: 805/1497 cut-off events. [2024-06-28 03:31:54,048 INFO L125 PetriNetUnfolderBase]: For 119875/119875 co-relation queries the response was YES. [2024-06-28 03:31:54,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9480 conditions, 1497 events. 805/1497 cut-off events. For 119875/119875 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8794 event pairs, 142 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 9318. Up to 1128 conditions per place. [2024-06-28 03:31:54,061 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 92 changer transitions 0/311 dead transitions. [2024-06-28 03:31:54,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 311 transitions, 4015 flow [2024-06-28 03:31:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:31:54,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:31:54,062 INFO L175 Difference]: Start difference. First operand has 364 places, 296 transitions, 3309 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:31:54,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 311 transitions, 4015 flow [2024-06-28 03:31:54,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 311 transitions, 3793 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:54,517 INFO L231 Difference]: Finished difference. Result has 366 places, 297 transitions, 3323 flow [2024-06-28 03:31:54,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3323, PETRI_PLACES=366, PETRI_TRANSITIONS=297} [2024-06-28 03:31:54,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 03:31:54,517 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 297 transitions, 3323 flow [2024-06-28 03:31:54,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:54,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:54,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:54,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:31:54,518 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:54,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2105437341, now seen corresponding path program 28 times [2024-06-28 03:31:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029908580] [2024-06-28 03:31:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029908580] [2024-06-28 03:31:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029908580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:31:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24968780] [2024-06-28 03:31:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:31:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:31:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:31:55,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:55,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 297 transitions, 3323 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:55,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:55,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:55,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:55,687 INFO L124 PetriNetUnfolderBase]: 809/1505 cut-off events. [2024-06-28 03:31:55,687 INFO L125 PetriNetUnfolderBase]: For 122240/122240 co-relation queries the response was YES. [2024-06-28 03:31:55,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9537 conditions, 1505 events. 809/1505 cut-off events. For 122240/122240 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8878 event pairs, 144 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 9374. Up to 1077 conditions per place. [2024-06-28 03:31:55,704 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 94 changer transitions 0/313 dead transitions. [2024-06-28 03:31:55,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 313 transitions, 4261 flow [2024-06-28 03:31:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:31:55,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:31:55,706 INFO L175 Difference]: Start difference. First operand has 366 places, 297 transitions, 3323 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:31:55,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 313 transitions, 4261 flow [2024-06-28 03:31:56,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 313 transitions, 4035 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:56,187 INFO L231 Difference]: Finished difference. Result has 368 places, 298 transitions, 3337 flow [2024-06-28 03:31:56,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3337, PETRI_PLACES=368, PETRI_TRANSITIONS=298} [2024-06-28 03:31:56,188 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 03:31:56,188 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 298 transitions, 3337 flow [2024-06-28 03:31:56,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:56,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:56,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:56,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:31:56,188 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:56,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1698035717, now seen corresponding path program 29 times [2024-06-28 03:31:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866183644] [2024-06-28 03:31:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:56,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:56,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866183644] [2024-06-28 03:31:56,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866183644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:56,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:56,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636146575] [2024-06-28 03:31:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:56,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:56,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:57,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:57,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 298 transitions, 3337 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:57,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:57,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:57,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:57,422 INFO L124 PetriNetUnfolderBase]: 813/1513 cut-off events. [2024-06-28 03:31:57,423 INFO L125 PetriNetUnfolderBase]: For 124617/124617 co-relation queries the response was YES. [2024-06-28 03:31:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9596 conditions, 1513 events. 813/1513 cut-off events. For 124617/124617 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8945 event pairs, 118 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 9432. Up to 1158 conditions per place. [2024-06-28 03:31:57,441 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 198 selfloop transitions, 113 changer transitions 0/313 dead transitions. [2024-06-28 03:31:57,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 313 transitions, 4055 flow [2024-06-28 03:31:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:31:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:31:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:31:57,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:31:57,442 INFO L175 Difference]: Start difference. First operand has 368 places, 298 transitions, 3337 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:31:57,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 313 transitions, 4055 flow [2024-06-28 03:31:57,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 313 transitions, 3762 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 03:31:57,924 INFO L231 Difference]: Finished difference. Result has 370 places, 299 transitions, 3326 flow [2024-06-28 03:31:57,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3326, PETRI_PLACES=370, PETRI_TRANSITIONS=299} [2024-06-28 03:31:57,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 03:31:57,925 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 299 transitions, 3326 flow [2024-06-28 03:31:57,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:57,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:57,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:57,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:31:57,925 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:57,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939587, now seen corresponding path program 3 times [2024-06-28 03:31:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954017384] [2024-06-28 03:31:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:57,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:58,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954017384] [2024-06-28 03:31:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954017384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:58,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:58,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:31:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877174213] [2024-06-28 03:31:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:31:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:31:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:31:58,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:31:58,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 299 transitions, 3326 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:58,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:58,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:31:58,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:59,242 INFO L124 PetriNetUnfolderBase]: 833/1557 cut-off events. [2024-06-28 03:31:59,242 INFO L125 PetriNetUnfolderBase]: For 190102/190102 co-relation queries the response was YES. [2024-06-28 03:31:59,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9637 conditions, 1557 events. 833/1557 cut-off events. For 190102/190102 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9266 event pairs, 168 based on Foata normal form. 12/1569 useless extension candidates. Maximal degree in co-relation 9473. Up to 951 conditions per place. [2024-06-28 03:31:59,260 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 108 changer transitions 10/321 dead transitions. [2024-06-28 03:31:59,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 321 transitions, 4100 flow [2024-06-28 03:31:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:31:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:31:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:31:59,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:31:59,261 INFO L175 Difference]: Start difference. First operand has 370 places, 299 transitions, 3326 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:31:59,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 321 transitions, 4100 flow [2024-06-28 03:31:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 321 transitions, 3743 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:31:59,832 INFO L231 Difference]: Finished difference. Result has 371 places, 295 transitions, 3175 flow [2024-06-28 03:31:59,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3175, PETRI_PLACES=371, PETRI_TRANSITIONS=295} [2024-06-28 03:31:59,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 03:31:59,832 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 295 transitions, 3175 flow [2024-06-28 03:31:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:59,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:31:59,833 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:31:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1928185851, now seen corresponding path program 30 times [2024-06-28 03:31:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987279813] [2024-06-28 03:31:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987279813] [2024-06-28 03:32:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987279813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:00,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:00,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120131428] [2024-06-28 03:32:00,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:00,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:00,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:00,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:00,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 295 transitions, 3175 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:00,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:00,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:00,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:01,073 INFO L124 PetriNetUnfolderBase]: 799/1503 cut-off events. [2024-06-28 03:32:01,073 INFO L125 PetriNetUnfolderBase]: For 127103/127103 co-relation queries the response was YES. [2024-06-28 03:32:01,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9117 conditions, 1503 events. 799/1503 cut-off events. For 127103/127103 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9027 event pairs, 142 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 8954. Up to 1148 conditions per place. [2024-06-28 03:32:01,091 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 89 changer transitions 0/311 dead transitions. [2024-06-28 03:32:01,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 311 transitions, 3884 flow [2024-06-28 03:32:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:32:01,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 03:32:01,092 INFO L175 Difference]: Start difference. First operand has 371 places, 295 transitions, 3175 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:32:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 311 transitions, 3884 flow [2024-06-28 03:32:01,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 311 transitions, 3646 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:32:01,603 INFO L231 Difference]: Finished difference. Result has 372 places, 296 transitions, 3160 flow [2024-06-28 03:32:01,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3160, PETRI_PLACES=372, PETRI_TRANSITIONS=296} [2024-06-28 03:32:01,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-28 03:32:01,603 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 296 transitions, 3160 flow [2024-06-28 03:32:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:01,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:01,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:32:01,603 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:01,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1397275447, now seen corresponding path program 31 times [2024-06-28 03:32:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:01,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267675427] [2024-06-28 03:32:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:02,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267675427] [2024-06-28 03:32:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267675427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:02,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:02,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:32:02,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695645645] [2024-06-28 03:32:02,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:02,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:32:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:32:02,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:32:02,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:02,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 296 transitions, 3160 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:02,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:02,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:02,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:02,787 INFO L124 PetriNetUnfolderBase]: 803/1511 cut-off events. [2024-06-28 03:32:02,787 INFO L125 PetriNetUnfolderBase]: For 129886/129886 co-relation queries the response was YES. [2024-06-28 03:32:02,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9164 conditions, 1511 events. 803/1511 cut-off events. For 129886/129886 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9075 event pairs, 142 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 9000. Up to 1156 conditions per place. [2024-06-28 03:32:02,805 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 88 changer transitions 0/312 dead transitions. [2024-06-28 03:32:02,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 312 transitions, 3873 flow [2024-06-28 03:32:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:32:02,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:32:02,806 INFO L175 Difference]: Start difference. First operand has 372 places, 296 transitions, 3160 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:32:02,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 312 transitions, 3873 flow [2024-06-28 03:32:03,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 312 transitions, 3661 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:03,398 INFO L231 Difference]: Finished difference. Result has 374 places, 297 transitions, 3171 flow [2024-06-28 03:32:03,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3171, PETRI_PLACES=374, PETRI_TRANSITIONS=297} [2024-06-28 03:32:03,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-28 03:32:03,398 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 297 transitions, 3171 flow [2024-06-28 03:32:03,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:03,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:03,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:03,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:32:03,399 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:03,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1728577923, now seen corresponding path program 4 times [2024-06-28 03:32:03,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:03,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737964752] [2024-06-28 03:32:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:04,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737964752] [2024-06-28 03:32:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737964752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:04,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:04,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324794727] [2024-06-28 03:32:04,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:04,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:04,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:04,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 297 transitions, 3171 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:04,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:04,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:04,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:04,790 INFO L124 PetriNetUnfolderBase]: 823/1555 cut-off events. [2024-06-28 03:32:04,790 INFO L125 PetriNetUnfolderBase]: For 200081/200081 co-relation queries the response was YES. [2024-06-28 03:32:04,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 1555 events. 823/1555 cut-off events. For 200081/200081 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9355 event pairs, 304 based on Foata normal form. 12/1567 useless extension candidates. Maximal degree in co-relation 9168. Up to 1462 conditions per place. [2024-06-28 03:32:04,808 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 18 changer transitions 7/315 dead transitions. [2024-06-28 03:32:04,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 315 transitions, 3907 flow [2024-06-28 03:32:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:32:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:32:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:32:04,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:32:04,809 INFO L175 Difference]: Start difference. First operand has 374 places, 297 transitions, 3171 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:32:04,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 315 transitions, 3907 flow [2024-06-28 03:32:05,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 315 transitions, 3695 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:05,411 INFO L231 Difference]: Finished difference. Result has 377 places, 296 transitions, 3013 flow [2024-06-28 03:32:05,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3013, PETRI_PLACES=377, PETRI_TRANSITIONS=296} [2024-06-28 03:32:05,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 03:32:05,411 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 296 transitions, 3013 flow [2024-06-28 03:32:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:05,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:05,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:32:05,412 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:05,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 5 times [2024-06-28 03:32:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:05,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669287609] [2024-06-28 03:32:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:06,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669287609] [2024-06-28 03:32:06,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669287609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:06,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:06,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739569650] [2024-06-28 03:32:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:06,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:06,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:06,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 296 transitions, 3013 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:06,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:06,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:06,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:06,718 INFO L124 PetriNetUnfolderBase]: 817/1549 cut-off events. [2024-06-28 03:32:06,718 INFO L125 PetriNetUnfolderBase]: For 202470/202470 co-relation queries the response was YES. [2024-06-28 03:32:06,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9116 conditions, 1549 events. 817/1549 cut-off events. For 202470/202470 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9342 event pairs, 128 based on Foata normal form. 12/1561 useless extension candidates. Maximal degree in co-relation 8950. Up to 951 conditions per place. [2024-06-28 03:32:06,736 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 127 changer transitions 8/318 dead transitions. [2024-06-28 03:32:06,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 318 transitions, 3781 flow [2024-06-28 03:32:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:32:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:32:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:32:06,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:32:06,737 INFO L175 Difference]: Start difference. First operand has 377 places, 296 transitions, 3013 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:32:06,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 318 transitions, 3781 flow [2024-06-28 03:32:07,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 318 transitions, 3721 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:32:07,218 INFO L231 Difference]: Finished difference. Result has 379 places, 294 transitions, 3216 flow [2024-06-28 03:32:07,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3216, PETRI_PLACES=379, PETRI_TRANSITIONS=294} [2024-06-28 03:32:07,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-28 03:32:07,218 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 294 transitions, 3216 flow [2024-06-28 03:32:07,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:07,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:07,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:32:07,218 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:07,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 6 times [2024-06-28 03:32:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:07,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486491818] [2024-06-28 03:32:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:08,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:08,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486491818] [2024-06-28 03:32:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486491818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:08,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:08,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:08,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730807634] [2024-06-28 03:32:08,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:08,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:08,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:08,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:08,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 294 transitions, 3216 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:08,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:08,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:08,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:08,562 INFO L124 PetriNetUnfolderBase]: 798/1516 cut-off events. [2024-06-28 03:32:08,562 INFO L125 PetriNetUnfolderBase]: For 150458/150458 co-relation queries the response was YES. [2024-06-28 03:32:08,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 1516 events. 798/1516 cut-off events. For 150458/150458 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9182 event pairs, 301 based on Foata normal form. 2/1518 useless extension candidates. Maximal degree in co-relation 9378. Up to 1444 conditions per place. [2024-06-28 03:32:08,580 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 24 changer transitions 0/311 dead transitions. [2024-06-28 03:32:08,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 311 transitions, 4176 flow [2024-06-28 03:32:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 03:32:08,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-28 03:32:08,581 INFO L175 Difference]: Start difference. First operand has 379 places, 294 transitions, 3216 flow. Second operand 12 states and 115 transitions. [2024-06-28 03:32:08,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 311 transitions, 4176 flow [2024-06-28 03:32:09,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 311 transitions, 3896 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:32:09,266 INFO L231 Difference]: Finished difference. Result has 382 places, 296 transitions, 3054 flow [2024-06-28 03:32:09,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3054, PETRI_PLACES=382, PETRI_TRANSITIONS=296} [2024-06-28 03:32:09,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-28 03:32:09,267 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 296 transitions, 3054 flow [2024-06-28 03:32:09,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:09,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:09,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:09,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:32:09,267 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:09,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1934619591, now seen corresponding path program 32 times [2024-06-28 03:32:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964331384] [2024-06-28 03:32:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:10,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:10,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964331384] [2024-06-28 03:32:10,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964331384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:10,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:10,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174248975] [2024-06-28 03:32:10,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:10,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:10,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:10,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 296 transitions, 3054 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:10,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:10,564 INFO L124 PetriNetUnfolderBase]: 802/1524 cut-off events. [2024-06-28 03:32:10,565 INFO L125 PetriNetUnfolderBase]: For 153178/153178 co-relation queries the response was YES. [2024-06-28 03:32:10,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9376 conditions, 1524 events. 802/1524 cut-off events. For 153178/153178 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9251 event pairs, 145 based on Foata normal form. 2/1526 useless extension candidates. Maximal degree in co-relation 9208. Up to 1149 conditions per place. [2024-06-28 03:32:10,582 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 90 changer transitions 0/312 dead transitions. [2024-06-28 03:32:10,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 312 transitions, 3765 flow [2024-06-28 03:32:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:32:10,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:32:10,583 INFO L175 Difference]: Start difference. First operand has 382 places, 296 transitions, 3054 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:32:10,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 312 transitions, 3765 flow [2024-06-28 03:32:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 312 transitions, 3697 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:11,186 INFO L231 Difference]: Finished difference. Result has 384 places, 297 transitions, 3215 flow [2024-06-28 03:32:11,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3215, PETRI_PLACES=384, PETRI_TRANSITIONS=297} [2024-06-28 03:32:11,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 03:32:11,187 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 297 transitions, 3215 flow [2024-06-28 03:32:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:11,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:11,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:32:11,187 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:11,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1993501181, now seen corresponding path program 7 times [2024-06-28 03:32:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727682183] [2024-06-28 03:32:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:12,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727682183] [2024-06-28 03:32:12,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727682183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:12,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:12,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610276718] [2024-06-28 03:32:12,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:12,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:12,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 297 transitions, 3215 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:12,606 INFO L124 PetriNetUnfolderBase]: 799/1519 cut-off events. [2024-06-28 03:32:12,607 INFO L125 PetriNetUnfolderBase]: For 140512/140512 co-relation queries the response was YES. [2024-06-28 03:32:12,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9243 conditions, 1519 events. 799/1519 cut-off events. For 140512/140512 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9232 event pairs, 302 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 9073. Up to 1470 conditions per place. [2024-06-28 03:32:12,625 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 286 selfloop transitions, 22 changer transitions 0/310 dead transitions. [2024-06-28 03:32:12,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 310 transitions, 3863 flow [2024-06-28 03:32:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 03:32:12,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 03:32:12,626 INFO L175 Difference]: Start difference. First operand has 384 places, 297 transitions, 3215 flow. Second operand 12 states and 114 transitions. [2024-06-28 03:32:12,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 310 transitions, 3863 flow [2024-06-28 03:32:13,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 310 transitions, 3627 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:13,253 INFO L231 Difference]: Finished difference. Result has 388 places, 297 transitions, 3027 flow [2024-06-28 03:32:13,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3027, PETRI_PLACES=388, PETRI_TRANSITIONS=297} [2024-06-28 03:32:13,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 03:32:13,253 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 297 transitions, 3027 flow [2024-06-28 03:32:13,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:13,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:13,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:13,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:32:13,253 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:13,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1964941887, now seen corresponding path program 33 times [2024-06-28 03:32:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382834232] [2024-06-28 03:32:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:14,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382834232] [2024-06-28 03:32:14,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382834232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:14,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:14,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:14,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481772952] [2024-06-28 03:32:14,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:14,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:14,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:14,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 297 transitions, 3027 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:14,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:14,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:14,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:14,587 INFO L124 PetriNetUnfolderBase]: 803/1528 cut-off events. [2024-06-28 03:32:14,588 INFO L125 PetriNetUnfolderBase]: For 141858/141858 co-relation queries the response was YES. [2024-06-28 03:32:14,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9077 conditions, 1528 events. 803/1528 cut-off events. For 141858/141858 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9296 event pairs, 126 based on Foata normal form. 2/1530 useless extension candidates. Maximal degree in co-relation 8906. Up to 1172 conditions per place. [2024-06-28 03:32:14,606 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 211 selfloop transitions, 99 changer transitions 0/312 dead transitions. [2024-06-28 03:32:14,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 312 transitions, 3738 flow [2024-06-28 03:32:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:32:14,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:32:14,607 INFO L175 Difference]: Start difference. First operand has 388 places, 297 transitions, 3027 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:32:14,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 312 transitions, 3738 flow [2024-06-28 03:32:15,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 312 transitions, 3688 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:32:15,143 INFO L231 Difference]: Finished difference. Result has 387 places, 298 transitions, 3226 flow [2024-06-28 03:32:15,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3226, PETRI_PLACES=387, PETRI_TRANSITIONS=298} [2024-06-28 03:32:15,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 03:32:15,143 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 298 transitions, 3226 flow [2024-06-28 03:32:15,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:15,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:15,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:15,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:32:15,144 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:15,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:15,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1964946537, now seen corresponding path program 34 times [2024-06-28 03:32:15,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:15,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146390764] [2024-06-28 03:32:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:15,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146390764] [2024-06-28 03:32:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146390764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:15,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:15,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128601124] [2024-06-28 03:32:15,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:15,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:15,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:16,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:16,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 298 transitions, 3226 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:16,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:16,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:16,453 INFO L124 PetriNetUnfolderBase]: 807/1535 cut-off events. [2024-06-28 03:32:16,453 INFO L125 PetriNetUnfolderBase]: For 145792/145792 co-relation queries the response was YES. [2024-06-28 03:32:16,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9399 conditions, 1535 events. 807/1535 cut-off events. For 145792/145792 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9355 event pairs, 126 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 9227. Up to 1151 conditions per place. [2024-06-28 03:32:16,467 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 210 selfloop transitions, 102 changer transitions 0/314 dead transitions. [2024-06-28 03:32:16,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 314 transitions, 4191 flow [2024-06-28 03:32:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:32:16,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:32:16,468 INFO L175 Difference]: Start difference. First operand has 387 places, 298 transitions, 3226 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:32:16,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 314 transitions, 4191 flow [2024-06-28 03:32:17,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 314 transitions, 3953 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:17,123 INFO L231 Difference]: Finished difference. Result has 389 places, 299 transitions, 3243 flow [2024-06-28 03:32:17,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3243, PETRI_PLACES=389, PETRI_TRANSITIONS=299} [2024-06-28 03:32:17,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 03:32:17,124 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 299 transitions, 3243 flow [2024-06-28 03:32:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:17,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:17,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:17,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:32:17,124 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:17,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1958512797, now seen corresponding path program 35 times [2024-06-28 03:32:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:17,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200708611] [2024-06-28 03:32:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:17,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:17,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200708611] [2024-06-28 03:32:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200708611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:17,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198308002] [2024-06-28 03:32:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:17,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:17,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 299 transitions, 3243 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:17,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:17,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:17,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:18,340 INFO L124 PetriNetUnfolderBase]: 804/1530 cut-off events. [2024-06-28 03:32:18,341 INFO L125 PetriNetUnfolderBase]: For 131326/131326 co-relation queries the response was YES. [2024-06-28 03:32:18,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 1530 events. 804/1530 cut-off events. For 131326/131326 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9329 event pairs, 125 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 8871. Up to 1175 conditions per place. [2024-06-28 03:32:18,358 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 214 selfloop transitions, 98 changer transitions 0/314 dead transitions. [2024-06-28 03:32:18,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 314 transitions, 3919 flow [2024-06-28 03:32:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:32:18,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:32:18,359 INFO L175 Difference]: Start difference. First operand has 389 places, 299 transitions, 3243 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:32:18,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 314 transitions, 3919 flow [2024-06-28 03:32:18,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 314 transitions, 3621 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:18,926 INFO L231 Difference]: Finished difference. Result has 391 places, 299 transitions, 3145 flow [2024-06-28 03:32:18,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3145, PETRI_PLACES=391, PETRI_TRANSITIONS=299} [2024-06-28 03:32:18,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 03:32:18,927 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 299 transitions, 3145 flow [2024-06-28 03:32:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:18,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:18,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:18,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:32:18,928 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:18,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266533, now seen corresponding path program 8 times [2024-06-28 03:32:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422275502] [2024-06-28 03:32:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422275502] [2024-06-28 03:32:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422275502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331541099] [2024-06-28 03:32:19,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:19,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:19,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:19,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:19,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 299 transitions, 3145 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:19,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:19,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:19,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:20,308 INFO L124 PetriNetUnfolderBase]: 817/1561 cut-off events. [2024-06-28 03:32:20,308 INFO L125 PetriNetUnfolderBase]: For 193139/193139 co-relation queries the response was YES. [2024-06-28 03:32:20,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 1561 events. 817/1561 cut-off events. For 193139/193139 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9521 event pairs, 142 based on Foata normal form. 12/1573 useless extension candidates. Maximal degree in co-relation 8551. Up to 959 conditions per place. [2024-06-28 03:32:20,327 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 110 changer transitions 9/320 dead transitions. [2024-06-28 03:32:20,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 320 transitions, 3887 flow [2024-06-28 03:32:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:32:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:32:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:32:20,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 03:32:20,328 INFO L175 Difference]: Start difference. First operand has 391 places, 299 transitions, 3145 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:32:20,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 320 transitions, 3887 flow [2024-06-28 03:32:20,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 320 transitions, 3584 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:20,921 INFO L231 Difference]: Finished difference. Result has 392 places, 295 transitions, 3028 flow [2024-06-28 03:32:20,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3028, PETRI_PLACES=392, PETRI_TRANSITIONS=295} [2024-06-28 03:32:20,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 03:32:20,922 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 295 transitions, 3028 flow [2024-06-28 03:32:20,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:20,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:20,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:20,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:32:20,923 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:20,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1408071917, now seen corresponding path program 1 times [2024-06-28 03:32:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775172460] [2024-06-28 03:32:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:20,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:21,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775172460] [2024-06-28 03:32:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775172460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517830224] [2024-06-28 03:32:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:22,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:22,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 295 transitions, 3028 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:22,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:22,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:22,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:22,449 INFO L124 PetriNetUnfolderBase]: 787/1511 cut-off events. [2024-06-28 03:32:22,449 INFO L125 PetriNetUnfolderBase]: For 116701/116701 co-relation queries the response was YES. [2024-06-28 03:32:22,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 1511 events. 787/1511 cut-off events. For 116701/116701 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9300 event pairs, 191 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 8211. Up to 1410 conditions per place. [2024-06-28 03:32:22,463 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 27 changer transitions 0/318 dead transitions. [2024-06-28 03:32:22,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 318 transitions, 3740 flow [2024-06-28 03:32:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 03:32:22,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 03:32:22,464 INFO L175 Difference]: Start difference. First operand has 392 places, 295 transitions, 3028 flow. Second operand 12 states and 121 transitions. [2024-06-28 03:32:22,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 318 transitions, 3740 flow [2024-06-28 03:32:22,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 318 transitions, 3351 flow, removed 16 selfloop flow, removed 15 redundant places. [2024-06-28 03:32:22,970 INFO L231 Difference]: Finished difference. Result has 389 places, 296 transitions, 2725 flow [2024-06-28 03:32:22,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2639, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2725, PETRI_PLACES=389, PETRI_TRANSITIONS=296} [2024-06-28 03:32:22,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 03:32:22,970 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 296 transitions, 2725 flow [2024-06-28 03:32:22,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:22,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:22,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:22,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:32:22,971 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:22,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1982219271, now seen corresponding path program 2 times [2024-06-28 03:32:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926625867] [2024-06-28 03:32:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:22,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:23,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926625867] [2024-06-28 03:32:23,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926625867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:23,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:23,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:23,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429280477] [2024-06-28 03:32:23,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:23,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:23,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:23,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:23,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:23,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:23,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 296 transitions, 2725 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:23,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:23,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:23,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:24,226 INFO L124 PetriNetUnfolderBase]: 791/1519 cut-off events. [2024-06-28 03:32:24,226 INFO L125 PetriNetUnfolderBase]: For 119278/119278 co-relation queries the response was YES. [2024-06-28 03:32:24,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8057 conditions, 1519 events. 791/1519 cut-off events. For 119278/119278 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9367 event pairs, 157 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 7886. Up to 1383 conditions per place. [2024-06-28 03:32:24,243 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 29 changer transitions 0/319 dead transitions. [2024-06-28 03:32:24,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 319 transitions, 3439 flow [2024-06-28 03:32:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 03:32:24,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 03:32:24,244 INFO L175 Difference]: Start difference. First operand has 389 places, 296 transitions, 2725 flow. Second operand 12 states and 118 transitions. [2024-06-28 03:32:24,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 319 transitions, 3439 flow [2024-06-28 03:32:24,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 319 transitions, 3330 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:32:24,762 INFO L231 Difference]: Finished difference. Result has 390 places, 297 transitions, 2708 flow [2024-06-28 03:32:24,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2708, PETRI_PLACES=390, PETRI_TRANSITIONS=297} [2024-06-28 03:32:24,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 03:32:24,763 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 297 transitions, 2708 flow [2024-06-28 03:32:24,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:24,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:24,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:32:24,763 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 3 times [2024-06-28 03:32:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:24,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813656841] [2024-06-28 03:32:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:24,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813656841] [2024-06-28 03:32:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813656841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:25,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:25,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:25,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575767326] [2024-06-28 03:32:25,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:25,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:25,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:25,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 297 transitions, 2708 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:25,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:25,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:26,245 INFO L124 PetriNetUnfolderBase]: 802/1540 cut-off events. [2024-06-28 03:32:26,245 INFO L125 PetriNetUnfolderBase]: For 136226/136226 co-relation queries the response was YES. [2024-06-28 03:32:26,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 1540 events. 802/1540 cut-off events. For 136226/136226 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9488 event pairs, 185 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 8240. Up to 1364 conditions per place. [2024-06-28 03:32:26,263 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 284 selfloop transitions, 35 changer transitions 0/321 dead transitions. [2024-06-28 03:32:26,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 321 transitions, 3718 flow [2024-06-28 03:32:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:32:26,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:32:26,264 INFO L175 Difference]: Start difference. First operand has 390 places, 297 transitions, 2708 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:32:26,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 321 transitions, 3718 flow [2024-06-28 03:32:26,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 321 transitions, 3638 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:26,876 INFO L231 Difference]: Finished difference. Result has 392 places, 299 transitions, 2760 flow [2024-06-28 03:32:26,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2760, PETRI_PLACES=392, PETRI_TRANSITIONS=299} [2024-06-28 03:32:26,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 03:32:26,876 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 299 transitions, 2760 flow [2024-06-28 03:32:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:26,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:26,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:32:26,877 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:26,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -284068453, now seen corresponding path program 4 times [2024-06-28 03:32:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776651261] [2024-06-28 03:32:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:26,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:27,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776651261] [2024-06-28 03:32:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776651261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:27,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:27,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640948769] [2024-06-28 03:32:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:27,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:27,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 299 transitions, 2760 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:27,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:27,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:27,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:28,215 INFO L124 PetriNetUnfolderBase]: 806/1548 cut-off events. [2024-06-28 03:32:28,215 INFO L125 PetriNetUnfolderBase]: For 140505/140505 co-relation queries the response was YES. [2024-06-28 03:32:28,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8470 conditions, 1548 events. 806/1548 cut-off events. For 140505/140505 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9595 event pairs, 190 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 8298. Up to 1400 conditions per place. [2024-06-28 03:32:28,232 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 284 selfloop transitions, 36 changer transitions 0/322 dead transitions. [2024-06-28 03:32:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 322 transitions, 3752 flow [2024-06-28 03:32:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:32:28,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:32:28,233 INFO L175 Difference]: Start difference. First operand has 392 places, 299 transitions, 2760 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:32:28,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 322 transitions, 3752 flow [2024-06-28 03:32:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 322 transitions, 3666 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:28,945 INFO L231 Difference]: Finished difference. Result has 396 places, 300 transitions, 2780 flow [2024-06-28 03:32:28,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2780, PETRI_PLACES=396, PETRI_TRANSITIONS=300} [2024-06-28 03:32:28,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 03:32:28,946 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 300 transitions, 2780 flow [2024-06-28 03:32:28,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:28,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:28,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:28,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:32:28,946 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:28,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:28,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1463557057, now seen corresponding path program 5 times [2024-06-28 03:32:28,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:28,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467006411] [2024-06-28 03:32:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:28,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:29,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:29,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467006411] [2024-06-28 03:32:29,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467006411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:29,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666561084] [2024-06-28 03:32:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:29,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:29,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 300 transitions, 2780 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:29,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:29,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:29,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:30,358 INFO L124 PetriNetUnfolderBase]: 810/1556 cut-off events. [2024-06-28 03:32:30,359 INFO L125 PetriNetUnfolderBase]: For 142160/142160 co-relation queries the response was YES. [2024-06-28 03:32:30,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 1556 events. 810/1556 cut-off events. For 142160/142160 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9650 event pairs, 197 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 8341. Up to 1428 conditions per place. [2024-06-28 03:32:30,377 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 284 selfloop transitions, 37 changer transitions 0/323 dead transitions. [2024-06-28 03:32:30,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 323 transitions, 3774 flow [2024-06-28 03:32:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:32:30,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:32:30,378 INFO L175 Difference]: Start difference. First operand has 396 places, 300 transitions, 2780 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:32:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 323 transitions, 3774 flow [2024-06-28 03:32:31,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 323 transitions, 3681 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:31,034 INFO L231 Difference]: Finished difference. Result has 398 places, 301 transitions, 2789 flow [2024-06-28 03:32:31,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2789, PETRI_PLACES=398, PETRI_TRANSITIONS=301} [2024-06-28 03:32:31,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-28 03:32:31,034 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 301 transitions, 2789 flow [2024-06-28 03:32:31,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:31,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:31,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:31,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:32:31,035 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:31,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 794184343, now seen corresponding path program 6 times [2024-06-28 03:32:31,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:31,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487434060] [2024-06-28 03:32:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:31,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:31,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487434060] [2024-06-28 03:32:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487434060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:31,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:31,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161134750] [2024-06-28 03:32:31,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:31,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:31,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:31,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:31,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 301 transitions, 2789 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:31,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:31,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:31,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:32,369 INFO L124 PetriNetUnfolderBase]: 807/1551 cut-off events. [2024-06-28 03:32:32,369 INFO L125 PetriNetUnfolderBase]: For 126484/126484 co-relation queries the response was YES. [2024-06-28 03:32:32,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 1551 events. 807/1551 cut-off events. For 126484/126484 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9632 event pairs, 201 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 8023. Up to 1442 conditions per place. [2024-06-28 03:32:32,384 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 37 changer transitions 0/322 dead transitions. [2024-06-28 03:32:32,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 322 transitions, 3495 flow [2024-06-28 03:32:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:32:32,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:32:32,385 INFO L175 Difference]: Start difference. First operand has 398 places, 301 transitions, 2789 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:32:32,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 322 transitions, 3495 flow [2024-06-28 03:32:33,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 322 transitions, 3384 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:33,089 INFO L231 Difference]: Finished difference. Result has 400 places, 301 transitions, 2757 flow [2024-06-28 03:32:33,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2757, PETRI_PLACES=400, PETRI_TRANSITIONS=301} [2024-06-28 03:32:33,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-28 03:32:33,090 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 301 transitions, 2757 flow [2024-06-28 03:32:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:33,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:33,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:33,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:32:33,090 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:33,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 918684269, now seen corresponding path program 7 times [2024-06-28 03:32:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758992968] [2024-06-28 03:32:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:33,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758992968] [2024-06-28 03:32:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758992968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638554435] [2024-06-28 03:32:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:33,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:33,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:34,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:34,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 301 transitions, 2757 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:34,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:34,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:34,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:34,487 INFO L124 PetriNetUnfolderBase]: 811/1559 cut-off events. [2024-06-28 03:32:34,488 INFO L125 PetriNetUnfolderBase]: For 128334/128334 co-relation queries the response was YES. [2024-06-28 03:32:34,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 1559 events. 811/1559 cut-off events. For 128334/128334 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9663 event pairs, 171 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 8037. Up to 1458 conditions per place. [2024-06-28 03:32:34,505 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 26 changer transitions 0/323 dead transitions. [2024-06-28 03:32:34,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 323 transitions, 3481 flow [2024-06-28 03:32:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 03:32:34,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-28 03:32:34,506 INFO L175 Difference]: Start difference. First operand has 400 places, 301 transitions, 2757 flow. Second operand 12 states and 122 transitions. [2024-06-28 03:32:34,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 323 transitions, 3481 flow [2024-06-28 03:32:35,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 323 transitions, 3404 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:32:35,170 INFO L231 Difference]: Finished difference. Result has 401 places, 302 transitions, 2768 flow [2024-06-28 03:32:35,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2768, PETRI_PLACES=401, PETRI_TRANSITIONS=302} [2024-06-28 03:32:35,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-28 03:32:35,170 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 302 transitions, 2768 flow [2024-06-28 03:32:35,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:35,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:35,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:32:35,170 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:35,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash -906038783, now seen corresponding path program 8 times [2024-06-28 03:32:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105934875] [2024-06-28 03:32:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:36,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:36,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105934875] [2024-06-28 03:32:36,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105934875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:36,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:36,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023986228] [2024-06-28 03:32:36,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:36,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:36,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:36,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:36,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:36,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:36,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 302 transitions, 2768 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:36,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:36,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:36,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:36,635 INFO L124 PetriNetUnfolderBase]: 822/1580 cut-off events. [2024-06-28 03:32:36,635 INFO L125 PetriNetUnfolderBase]: For 149321/149321 co-relation queries the response was YES. [2024-06-28 03:32:36,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8672 conditions, 1580 events. 822/1580 cut-off events. For 149321/149321 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9811 event pairs, 176 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 8495. Up to 1404 conditions per place. [2024-06-28 03:32:36,654 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 34 changer transitions 0/325 dead transitions. [2024-06-28 03:32:36,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 325 transitions, 3802 flow [2024-06-28 03:32:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:32:36,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:32:36,656 INFO L175 Difference]: Start difference. First operand has 401 places, 302 transitions, 2768 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:32:36,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 325 transitions, 3802 flow [2024-06-28 03:32:37,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 325 transitions, 3724 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:37,331 INFO L231 Difference]: Finished difference. Result has 403 places, 304 transitions, 2828 flow [2024-06-28 03:32:37,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2828, PETRI_PLACES=403, PETRI_TRANSITIONS=304} [2024-06-28 03:32:37,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-28 03:32:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 304 transitions, 2828 flow [2024-06-28 03:32:37,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:37,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:37,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:37,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:32:37,332 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:37,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1571698007, now seen corresponding path program 9 times [2024-06-28 03:32:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733228087] [2024-06-28 03:32:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:38,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:38,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733228087] [2024-06-28 03:32:38,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733228087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:38,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:38,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:38,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211981246] [2024-06-28 03:32:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:38,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:38,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:38,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:38,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:38,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 304 transitions, 2828 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:38,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:38,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:38,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:38,767 INFO L124 PetriNetUnfolderBase]: 833/1601 cut-off events. [2024-06-28 03:32:38,767 INFO L125 PetriNetUnfolderBase]: For 170543/170543 co-relation queries the response was YES. [2024-06-28 03:32:38,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 1601 events. 833/1601 cut-off events. For 170543/170543 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10000 event pairs, 177 based on Foata normal form. 2/1603 useless extension candidates. Maximal degree in co-relation 8959. Up to 1473 conditions per place. [2024-06-28 03:32:38,787 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 36 changer transitions 0/327 dead transitions. [2024-06-28 03:32:38,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 327 transitions, 3880 flow [2024-06-28 03:32:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:32:38,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:32:38,788 INFO L175 Difference]: Start difference. First operand has 403 places, 304 transitions, 2828 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:32:38,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 327 transitions, 3880 flow [2024-06-28 03:32:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 327 transitions, 3778 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:39,614 INFO L231 Difference]: Finished difference. Result has 407 places, 306 transitions, 2872 flow [2024-06-28 03:32:39,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2872, PETRI_PLACES=407, PETRI_TRANSITIONS=306} [2024-06-28 03:32:39,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 03:32:39,614 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 306 transitions, 2872 flow [2024-06-28 03:32:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:39,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:39,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:39,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:32:39,614 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:39,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash -902314133, now seen corresponding path program 10 times [2024-06-28 03:32:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:39,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165269858] [2024-06-28 03:32:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:39,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:40,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:40,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165269858] [2024-06-28 03:32:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165269858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:40,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903316641] [2024-06-28 03:32:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:40,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:40,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:40,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 306 transitions, 2872 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:40,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:40,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:40,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:41,029 INFO L124 PetriNetUnfolderBase]: 830/1596 cut-off events. [2024-06-28 03:32:41,029 INFO L125 PetriNetUnfolderBase]: For 153230/153230 co-relation queries the response was YES. [2024-06-28 03:32:41,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8776 conditions, 1596 events. 830/1596 cut-off events. For 153230/153230 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9962 event pairs, 178 based on Foata normal form. 2/1598 useless extension candidates. Maximal degree in co-relation 8596. Up to 1487 conditions per place. [2024-06-28 03:32:41,050 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 36 changer transitions 0/326 dead transitions. [2024-06-28 03:32:41,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 326 transitions, 3584 flow [2024-06-28 03:32:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 03:32:41,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:32:41,051 INFO L175 Difference]: Start difference. First operand has 407 places, 306 transitions, 2872 flow. Second operand 12 states and 124 transitions. [2024-06-28 03:32:41,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 326 transitions, 3584 flow [2024-06-28 03:32:41,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 326 transitions, 3498 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:41,818 INFO L231 Difference]: Finished difference. Result has 411 places, 306 transitions, 2863 flow [2024-06-28 03:32:41,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2863, PETRI_PLACES=411, PETRI_TRANSITIONS=306} [2024-06-28 03:32:41,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 03:32:41,819 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 306 transitions, 2863 flow [2024-06-28 03:32:41,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:41,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:41,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:41,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:32:41,819 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:41,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash -902463863, now seen corresponding path program 11 times [2024-06-28 03:32:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097152466] [2024-06-28 03:32:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:41,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:42,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097152466] [2024-06-28 03:32:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097152466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:42,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535209275] [2024-06-28 03:32:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:42,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:42,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:42,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:42,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 306 transitions, 2863 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:42,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:42,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:42,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:43,316 INFO L124 PetriNetUnfolderBase]: 827/1591 cut-off events. [2024-06-28 03:32:43,317 INFO L125 PetriNetUnfolderBase]: For 136060/136060 co-relation queries the response was YES. [2024-06-28 03:32:43,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 1591 events. 827/1591 cut-off events. For 136060/136060 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9920 event pairs, 173 based on Foata normal form. 2/1593 useless extension candidates. Maximal degree in co-relation 8275. Up to 1442 conditions per place. [2024-06-28 03:32:43,335 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 36 changer transitions 0/326 dead transitions. [2024-06-28 03:32:43,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 326 transitions, 3567 flow [2024-06-28 03:32:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:32:43,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:32:43,336 INFO L175 Difference]: Start difference. First operand has 411 places, 306 transitions, 2863 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:32:43,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 326 transitions, 3567 flow [2024-06-28 03:32:44,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 326 transitions, 3472 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 03:32:44,105 INFO L231 Difference]: Finished difference. Result has 412 places, 306 transitions, 2844 flow [2024-06-28 03:32:44,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2844, PETRI_PLACES=412, PETRI_TRANSITIONS=306} [2024-06-28 03:32:44,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 03:32:44,106 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 306 transitions, 2844 flow [2024-06-28 03:32:44,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:44,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:44,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:44,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:32:44,106 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:44,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 668280923, now seen corresponding path program 12 times [2024-06-28 03:32:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:44,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983184595] [2024-06-28 03:32:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:44,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:44,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983184595] [2024-06-28 03:32:44,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983184595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:44,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:44,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903251745] [2024-06-28 03:32:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:44,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:44,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 306 transitions, 2844 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:44,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:44,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:44,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:45,336 INFO L124 PetriNetUnfolderBase]: 831/1599 cut-off events. [2024-06-28 03:32:45,336 INFO L125 PetriNetUnfolderBase]: For 138409/138409 co-relation queries the response was YES. [2024-06-28 03:32:45,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8514 conditions, 1599 events. 831/1599 cut-off events. For 138409/138409 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9978 event pairs, 163 based on Foata normal form. 2/1601 useless extension candidates. Maximal degree in co-relation 8331. Up to 1357 conditions per place. [2024-06-28 03:32:45,356 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 258 selfloop transitions, 67 changer transitions 0/327 dead transitions. [2024-06-28 03:32:45,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 327 transitions, 3594 flow [2024-06-28 03:32:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:32:45,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:32:45,357 INFO L175 Difference]: Start difference. First operand has 412 places, 306 transitions, 2844 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:32:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 327 transitions, 3594 flow [2024-06-28 03:32:46,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 327 transitions, 3492 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 03:32:46,173 INFO L231 Difference]: Finished difference. Result has 412 places, 307 transitions, 2916 flow [2024-06-28 03:32:46,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2916, PETRI_PLACES=412, PETRI_TRANSITIONS=307} [2024-06-28 03:32:46,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 03:32:46,173 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 307 transitions, 2916 flow [2024-06-28 03:32:46,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:46,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:46,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:46,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:32:46,174 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:46,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash 668275343, now seen corresponding path program 13 times [2024-06-28 03:32:46,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:46,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125063207] [2024-06-28 03:32:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:46,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:46,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125063207] [2024-06-28 03:32:46,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125063207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:46,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:46,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:46,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810973784] [2024-06-28 03:32:46,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:46,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:46,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:47,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:47,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 307 transitions, 2916 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:47,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:47,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:47,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:47,431 INFO L124 PetriNetUnfolderBase]: 871/1679 cut-off events. [2024-06-28 03:32:47,432 INFO L125 PetriNetUnfolderBase]: For 256015/256015 co-relation queries the response was YES. [2024-06-28 03:32:47,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10672 conditions, 1679 events. 871/1679 cut-off events. For 256015/256015 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10473 event pairs, 179 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 10489. Up to 1349 conditions per place. [2024-06-28 03:32:47,452 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 263 selfloop transitions, 69 changer transitions 0/334 dead transitions. [2024-06-28 03:32:47,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 334 transitions, 4042 flow [2024-06-28 03:32:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 03:32:47,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:32:47,453 INFO L175 Difference]: Start difference. First operand has 412 places, 307 transitions, 2916 flow. Second operand 12 states and 135 transitions. [2024-06-28 03:32:47,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 334 transitions, 4042 flow [2024-06-28 03:32:48,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 334 transitions, 3878 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:48,701 INFO L231 Difference]: Finished difference. Result has 414 places, 309 transitions, 2968 flow [2024-06-28 03:32:48,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2968, PETRI_PLACES=414, PETRI_TRANSITIONS=309} [2024-06-28 03:32:48,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-28 03:32:48,702 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 309 transitions, 2968 flow [2024-06-28 03:32:48,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:48,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:48,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:48,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:32:48,702 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:48,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash 675632573, now seen corresponding path program 14 times [2024-06-28 03:32:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149125301] [2024-06-28 03:32:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149125301] [2024-06-28 03:32:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149125301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:49,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:49,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104734401] [2024-06-28 03:32:49,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:49,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:49,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:49,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 309 transitions, 2968 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:49,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:49,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:49,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:50,263 INFO L124 PetriNetUnfolderBase]: 855/1651 cut-off events. [2024-06-28 03:32:50,263 INFO L125 PetriNetUnfolderBase]: For 239454/239454 co-relation queries the response was YES. [2024-06-28 03:32:50,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 1651 events. 855/1651 cut-off events. For 239454/239454 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10333 event pairs, 169 based on Foata normal form. 12/1663 useless extension candidates. Maximal degree in co-relation 8649. Up to 1367 conditions per place. [2024-06-28 03:32:50,284 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 254 selfloop transitions, 70 changer transitions 7/333 dead transitions. [2024-06-28 03:32:50,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 333 transitions, 3742 flow [2024-06-28 03:32:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:32:50,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:32:50,284 INFO L175 Difference]: Start difference. First operand has 414 places, 309 transitions, 2968 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:32:50,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 333 transitions, 3742 flow [2024-06-28 03:32:51,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 333 transitions, 3588 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:51,137 INFO L231 Difference]: Finished difference. Result has 418 places, 306 transitions, 2935 flow [2024-06-28 03:32:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2935, PETRI_PLACES=418, PETRI_TRANSITIONS=306} [2024-06-28 03:32:51,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-28 03:32:51,137 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 306 transitions, 2935 flow [2024-06-28 03:32:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:51,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:51,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:32:51,138 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash 675909279, now seen corresponding path program 1 times [2024-06-28 03:32:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91578167] [2024-06-28 03:32:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:51,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:51,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91578167] [2024-06-28 03:32:51,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91578167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:51,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:51,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:32:51,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534157779] [2024-06-28 03:32:51,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:51,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:32:51,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:32:51,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:32:52,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:52,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 306 transitions, 2935 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:52,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:52,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:52,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:52,449 INFO L124 PetriNetUnfolderBase]: 865/1677 cut-off events. [2024-06-28 03:32:52,449 INFO L125 PetriNetUnfolderBase]: For 282329/282329 co-relation queries the response was YES. [2024-06-28 03:32:52,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10084 conditions, 1677 events. 865/1677 cut-off events. For 282329/282329 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10485 event pairs, 181 based on Foata normal form. 8/1685 useless extension candidates. Maximal degree in co-relation 9898. Up to 1315 conditions per place. [2024-06-28 03:32:52,471 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 67 changer transitions 8/333 dead transitions. [2024-06-28 03:32:52,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 333 transitions, 4029 flow [2024-06-28 03:32:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:32:52,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:32:52,472 INFO L175 Difference]: Start difference. First operand has 418 places, 306 transitions, 2935 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:32:52,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 333 transitions, 4029 flow [2024-06-28 03:32:53,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 333 transitions, 3843 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:32:53,569 INFO L231 Difference]: Finished difference. Result has 417 places, 303 transitions, 2856 flow [2024-06-28 03:32:53,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2856, PETRI_PLACES=417, PETRI_TRANSITIONS=303} [2024-06-28 03:32:53,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-28 03:32:53,569 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 303 transitions, 2856 flow [2024-06-28 03:32:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:53,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:53,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:53,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:32:53,570 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:53,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash 466353357, now seen corresponding path program 15 times [2024-06-28 03:32:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013910950] [2024-06-28 03:32:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013910950] [2024-06-28 03:32:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013910950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648866790] [2024-06-28 03:32:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:54,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:54,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:54,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:54,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 303 transitions, 2856 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:54,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:54,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:55,146 INFO L124 PetriNetUnfolderBase]: 850/1644 cut-off events. [2024-06-28 03:32:55,146 INFO L125 PetriNetUnfolderBase]: For 228375/228375 co-relation queries the response was YES. [2024-06-28 03:32:55,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 1644 events. 850/1644 cut-off events. For 228375/228375 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10251 event pairs, 183 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 9748. Up to 1411 conditions per place. [2024-06-28 03:32:55,167 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 58 changer transitions 0/324 dead transitions. [2024-06-28 03:32:55,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 324 transitions, 3602 flow [2024-06-28 03:32:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:32:55,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:32:55,168 INFO L175 Difference]: Start difference. First operand has 417 places, 303 transitions, 2856 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:32:55,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 324 transitions, 3602 flow [2024-06-28 03:32:56,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 324 transitions, 3472 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:32:56,408 INFO L231 Difference]: Finished difference. Result has 415 places, 304 transitions, 2884 flow [2024-06-28 03:32:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2884, PETRI_PLACES=415, PETRI_TRANSITIONS=304} [2024-06-28 03:32:56,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 03:32:56,409 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 304 transitions, 2884 flow [2024-06-28 03:32:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:56,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:56,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:56,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:32:56,409 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:56,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 466347777, now seen corresponding path program 16 times [2024-06-28 03:32:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:56,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37147411] [2024-06-28 03:32:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:57,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:57,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37147411] [2024-06-28 03:32:57,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37147411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:57,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:57,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:32:57,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790625546] [2024-06-28 03:32:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:32:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:57,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:32:57,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:32:57,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:32:57,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 304 transitions, 2884 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:57,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:57,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:32:57,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:57,976 INFO L124 PetriNetUnfolderBase]: 854/1652 cut-off events. [2024-06-28 03:32:57,976 INFO L125 PetriNetUnfolderBase]: For 229054/229054 co-relation queries the response was YES. [2024-06-28 03:32:57,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 1652 events. 854/1652 cut-off events. For 229054/229054 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10337 event pairs, 183 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 9834. Up to 1405 conditions per place. [2024-06-28 03:32:57,997 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 59 changer transitions 0/325 dead transitions. [2024-06-28 03:32:57,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 325 transitions, 3630 flow [2024-06-28 03:32:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:32:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:32:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:32:57,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:32:57,998 INFO L175 Difference]: Start difference. First operand has 415 places, 304 transitions, 2884 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:32:57,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 325 transitions, 3630 flow [2024-06-28 03:32:59,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 325 transitions, 3482 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:32:59,257 INFO L231 Difference]: Finished difference. Result has 417 places, 305 transitions, 2898 flow [2024-06-28 03:32:59,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2898, PETRI_PLACES=417, PETRI_TRANSITIONS=305} [2024-06-28 03:32:59,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-28 03:32:59,258 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 305 transitions, 2898 flow [2024-06-28 03:32:59,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:32:59,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:59,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:59,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:32:59,258 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:32:59,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 466203627, now seen corresponding path program 17 times [2024-06-28 03:32:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399073689] [2024-06-28 03:32:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399073689] [2024-06-28 03:33:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399073689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:00,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:00,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:00,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880580994] [2024-06-28 03:33:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:00,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:00,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:00,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:00,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 305 transitions, 2898 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:00,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:00,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:00,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:00,790 INFO L124 PetriNetUnfolderBase]: 858/1660 cut-off events. [2024-06-28 03:33:00,790 INFO L125 PetriNetUnfolderBase]: For 232527/232527 co-relation queries the response was YES. [2024-06-28 03:33:00,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10086 conditions, 1660 events. 858/1660 cut-off events. For 232527/232527 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10372 event pairs, 187 based on Foata normal form. 2/1662 useless extension candidates. Maximal degree in co-relation 9900. Up to 1365 conditions per place. [2024-06-28 03:33:00,811 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 63 changer transitions 0/326 dead transitions. [2024-06-28 03:33:00,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 326 transitions, 3644 flow [2024-06-28 03:33:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:33:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:33:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:33:00,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:33:00,812 INFO L175 Difference]: Start difference. First operand has 417 places, 305 transitions, 2898 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:33:00,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 326 transitions, 3644 flow [2024-06-28 03:33:01,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 326 transitions, 3492 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 03:33:01,951 INFO L231 Difference]: Finished difference. Result has 419 places, 306 transitions, 2918 flow [2024-06-28 03:33:01,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2918, PETRI_PLACES=419, PETRI_TRANSITIONS=306} [2024-06-28 03:33:01,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-28 03:33:01,952 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 306 transitions, 2918 flow [2024-06-28 03:33:01,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:01,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:01,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:01,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:33:01,953 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:01,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash -530454677, now seen corresponding path program 18 times [2024-06-28 03:33:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765134311] [2024-06-28 03:33:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:01,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765134311] [2024-06-28 03:33:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765134311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:02,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484273541] [2024-06-28 03:33:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:02,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:02,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:02,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 306 transitions, 2918 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:02,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:02,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:02,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:03,541 INFO L124 PetriNetUnfolderBase]: 855/1655 cut-off events. [2024-06-28 03:33:03,541 INFO L125 PetriNetUnfolderBase]: For 214368/214368 co-relation queries the response was YES. [2024-06-28 03:33:03,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9731 conditions, 1655 events. 855/1655 cut-off events. For 214368/214368 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10333 event pairs, 202 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 9544. Up to 1422 conditions per place. [2024-06-28 03:33:03,561 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 54 changer transitions 0/327 dead transitions. [2024-06-28 03:33:03,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 327 transitions, 3676 flow [2024-06-28 03:33:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:33:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:33:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:33:03,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:33:03,561 INFO L175 Difference]: Start difference. First operand has 419 places, 306 transitions, 2918 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:33:03,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 327 transitions, 3676 flow [2024-06-28 03:33:04,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 327 transitions, 3514 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 03:33:04,717 INFO L231 Difference]: Finished difference. Result has 421 places, 307 transitions, 2912 flow [2024-06-28 03:33:04,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2912, PETRI_PLACES=421, PETRI_TRANSITIONS=307} [2024-06-28 03:33:04,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-28 03:33:04,718 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 307 transitions, 2912 flow [2024-06-28 03:33:04,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:04,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:04,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:04,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:33:04,718 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:04,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash -530460257, now seen corresponding path program 19 times [2024-06-28 03:33:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299004180] [2024-06-28 03:33:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:05,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:05,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299004180] [2024-06-28 03:33:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299004180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:05,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:05,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213849509] [2024-06-28 03:33:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:05,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:05,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:05,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 307 transitions, 2912 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:05,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:05,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:05,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:06,223 INFO L124 PetriNetUnfolderBase]: 859/1663 cut-off events. [2024-06-28 03:33:06,223 INFO L125 PetriNetUnfolderBase]: For 217379/217379 co-relation queries the response was YES. [2024-06-28 03:33:06,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9756 conditions, 1663 events. 859/1663 cut-off events. For 217379/217379 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10420 event pairs, 202 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 9568. Up to 1416 conditions per place. [2024-06-28 03:33:06,241 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 55 changer transitions 0/328 dead transitions. [2024-06-28 03:33:06,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 328 transitions, 3670 flow [2024-06-28 03:33:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:33:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:33:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:33:06,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:33:06,241 INFO L175 Difference]: Start difference. First operand has 421 places, 307 transitions, 2912 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:33:06,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 328 transitions, 3670 flow [2024-06-28 03:33:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 328 transitions, 3524 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 03:33:07,406 INFO L231 Difference]: Finished difference. Result has 423 places, 308 transitions, 2926 flow [2024-06-28 03:33:07,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2926, PETRI_PLACES=423, PETRI_TRANSITIONS=308} [2024-06-28 03:33:07,407 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-28 03:33:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 308 transitions, 2926 flow [2024-06-28 03:33:07,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:07,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:07,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:33:07,408 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:07,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash -530604407, now seen corresponding path program 20 times [2024-06-28 03:33:07,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:07,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805166008] [2024-06-28 03:33:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805166008] [2024-06-28 03:33:08,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805166008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:08,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:08,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020860368] [2024-06-28 03:33:08,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:08,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:08,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:08,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 308 transitions, 2926 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:08,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:08,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:08,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:08,824 INFO L124 PetriNetUnfolderBase]: 863/1671 cut-off events. [2024-06-28 03:33:08,824 INFO L125 PetriNetUnfolderBase]: For 220599/220599 co-relation queries the response was YES. [2024-06-28 03:33:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9815 conditions, 1671 events. 863/1671 cut-off events. For 220599/220599 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10481 event pairs, 202 based on Foata normal form. 2/1673 useless extension candidates. Maximal degree in co-relation 9626. Up to 1402 conditions per place. [2024-06-28 03:33:08,847 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 56 changer transitions 0/329 dead transitions. [2024-06-28 03:33:08,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 329 transitions, 3684 flow [2024-06-28 03:33:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:33:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:33:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:33:08,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 03:33:08,849 INFO L175 Difference]: Start difference. First operand has 423 places, 308 transitions, 2926 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:33:08,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 329 transitions, 3684 flow [2024-06-28 03:33:10,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 329 transitions, 3534 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:33:10,015 INFO L231 Difference]: Finished difference. Result has 425 places, 309 transitions, 2940 flow [2024-06-28 03:33:10,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2940, PETRI_PLACES=425, PETRI_TRANSITIONS=309} [2024-06-28 03:33:10,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-28 03:33:10,015 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 309 transitions, 2940 flow [2024-06-28 03:33:10,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:10,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:10,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:10,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:33:10,015 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:10,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -534179327, now seen corresponding path program 21 times [2024-06-28 03:33:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:10,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466003571] [2024-06-28 03:33:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:10,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466003571] [2024-06-28 03:33:10,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466003571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:10,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:10,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:10,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132603370] [2024-06-28 03:33:10,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:10,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:10,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 309 transitions, 2940 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:10,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:10,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:10,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:11,336 INFO L124 PetriNetUnfolderBase]: 867/1679 cut-off events. [2024-06-28 03:33:11,336 INFO L125 PetriNetUnfolderBase]: For 223829/223829 co-relation queries the response was YES. [2024-06-28 03:33:11,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 1679 events. 867/1679 cut-off events. For 223829/223829 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10538 event pairs, 208 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 9686. Up to 1312 conditions per place. [2024-06-28 03:33:11,359 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 63 changer transitions 0/330 dead transitions. [2024-06-28 03:33:11,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 330 transitions, 3698 flow [2024-06-28 03:33:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:33:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:33:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:33:11,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:33:11,360 INFO L175 Difference]: Start difference. First operand has 425 places, 309 transitions, 2940 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:33:11,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 330 transitions, 3698 flow [2024-06-28 03:33:12,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 330 transitions, 3544 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 03:33:12,513 INFO L231 Difference]: Finished difference. Result has 427 places, 310 transitions, 2966 flow [2024-06-28 03:33:12,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2966, PETRI_PLACES=427, PETRI_TRANSITIONS=310} [2024-06-28 03:33:12,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 03:33:12,514 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 310 transitions, 2966 flow [2024-06-28 03:33:12,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:12,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:12,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:12,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:33:12,514 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:12,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1737814347, now seen corresponding path program 22 times [2024-06-28 03:33:12,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933756469] [2024-06-28 03:33:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933756469] [2024-06-28 03:33:13,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933756469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:13,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717501603] [2024-06-28 03:33:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:13,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:13,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:13,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:13,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 310 transitions, 2966 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:13,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:13,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:13,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:13,814 INFO L124 PetriNetUnfolderBase]: 871/1687 cut-off events. [2024-06-28 03:33:13,814 INFO L125 PetriNetUnfolderBase]: For 227021/227021 co-relation queries the response was YES. [2024-06-28 03:33:13,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9961 conditions, 1687 events. 871/1687 cut-off events. For 227021/227021 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10589 event pairs, 203 based on Foata normal form. 2/1689 useless extension candidates. Maximal degree in co-relation 9770. Up to 1455 conditions per place. [2024-06-28 03:33:13,837 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 288 selfloop transitions, 40 changer transitions 0/330 dead transitions. [2024-06-28 03:33:13,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 330 transitions, 3716 flow [2024-06-28 03:33:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:33:13,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:33:13,837 INFO L175 Difference]: Start difference. First operand has 427 places, 310 transitions, 2966 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:33:13,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 330 transitions, 3716 flow [2024-06-28 03:33:15,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 330 transitions, 3546 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:33:15,020 INFO L231 Difference]: Finished difference. Result has 428 places, 311 transitions, 2938 flow [2024-06-28 03:33:15,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2938, PETRI_PLACES=428, PETRI_TRANSITIONS=311} [2024-06-28 03:33:15,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-28 03:33:15,020 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 311 transitions, 2938 flow [2024-06-28 03:33:15,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:15,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:15,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:33:15,021 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash -752712079, now seen corresponding path program 23 times [2024-06-28 03:33:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:15,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135198987] [2024-06-28 03:33:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:15,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135198987] [2024-06-28 03:33:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135198987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:15,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324246548] [2024-06-28 03:33:15,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:15,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:15,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:16,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:16,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 311 transitions, 2938 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:16,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:16,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:16,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:16,549 INFO L124 PetriNetUnfolderBase]: 882/1708 cut-off events. [2024-06-28 03:33:16,549 INFO L125 PetriNetUnfolderBase]: For 253429/253429 co-relation queries the response was YES. [2024-06-28 03:33:16,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 1708 events. 882/1708 cut-off events. For 253429/253429 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10760 event pairs, 212 based on Foata normal form. 2/1710 useless extension candidates. Maximal degree in co-relation 10287. Up to 1380 conditions per place. [2024-06-28 03:33:16,573 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 267 selfloop transitions, 64 changer transitions 0/333 dead transitions. [2024-06-28 03:33:16,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 333 transitions, 4058 flow [2024-06-28 03:33:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:33:16,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:33:16,574 INFO L175 Difference]: Start difference. First operand has 428 places, 311 transitions, 2938 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:33:16,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 333 transitions, 4058 flow [2024-06-28 03:33:17,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 333 transitions, 3914 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:17,768 INFO L231 Difference]: Finished difference. Result has 430 places, 313 transitions, 3042 flow [2024-06-28 03:33:17,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=430, PETRI_TRANSITIONS=313} [2024-06-28 03:33:17,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-28 03:33:17,769 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 313 transitions, 3042 flow [2024-06-28 03:33:17,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:17,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:17,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:33:17,770 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:17,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 846851525, now seen corresponding path program 24 times [2024-06-28 03:33:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941084511] [2024-06-28 03:33:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:18,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941084511] [2024-06-28 03:33:18,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941084511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:18,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248996797] [2024-06-28 03:33:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:18,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:18,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:18,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:18,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:18,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 313 transitions, 3042 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:18,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:18,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:18,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:19,279 INFO L124 PetriNetUnfolderBase]: 886/1716 cut-off events. [2024-06-28 03:33:19,279 INFO L125 PetriNetUnfolderBase]: For 246522/246522 co-relation queries the response was YES. [2024-06-28 03:33:19,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10494 conditions, 1716 events. 886/1716 cut-off events. For 246522/246522 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10829 event pairs, 223 based on Foata normal form. 2/1718 useless extension candidates. Maximal degree in co-relation 10301. Up to 1456 conditions per place. [2024-06-28 03:33:19,302 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 267 selfloop transitions, 65 changer transitions 0/334 dead transitions. [2024-06-28 03:33:19,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 334 transitions, 4108 flow [2024-06-28 03:33:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:33:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:33:19,303 INFO L175 Difference]: Start difference. First operand has 430 places, 313 transitions, 3042 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:33:19,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 334 transitions, 4108 flow [2024-06-28 03:33:20,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 334 transitions, 3966 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:20,433 INFO L231 Difference]: Finished difference. Result has 432 places, 314 transitions, 3090 flow [2024-06-28 03:33:20,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3090, PETRI_PLACES=432, PETRI_TRANSITIONS=314} [2024-06-28 03:33:20,434 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-28 03:33:20,434 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 314 transitions, 3090 flow [2024-06-28 03:33:20,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:20,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:20,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:33:20,434 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:20,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 843132455, now seen corresponding path program 25 times [2024-06-28 03:33:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013688939] [2024-06-28 03:33:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013688939] [2024-06-28 03:33:21,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013688939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:21,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:21,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268231151] [2024-06-28 03:33:21,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:21,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:21,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 314 transitions, 3090 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:21,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:21,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:21,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:22,086 INFO L124 PetriNetUnfolderBase]: 890/1724 cut-off events. [2024-06-28 03:33:22,086 INFO L125 PetriNetUnfolderBase]: For 242968/242968 co-relation queries the response was YES. [2024-06-28 03:33:22,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 1724 events. 890/1724 cut-off events. For 242968/242968 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10896 event pairs, 217 based on Foata normal form. 2/1726 useless extension candidates. Maximal degree in co-relation 10382. Up to 1296 conditions per place. [2024-06-28 03:33:22,116 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 268 selfloop transitions, 65 changer transitions 0/335 dead transitions. [2024-06-28 03:33:22,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 335 transitions, 4148 flow [2024-06-28 03:33:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:33:22,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:33:22,117 INFO L175 Difference]: Start difference. First operand has 432 places, 314 transitions, 3090 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:33:22,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 335 transitions, 4148 flow [2024-06-28 03:33:23,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 335 transitions, 3971 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 03:33:23,391 INFO L231 Difference]: Finished difference. Result has 432 places, 315 transitions, 3105 flow [2024-06-28 03:33:23,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3105, PETRI_PLACES=432, PETRI_TRANSITIONS=315} [2024-06-28 03:33:23,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-28 03:33:23,392 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 315 transitions, 3105 flow [2024-06-28 03:33:23,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:23,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:23,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:23,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:33:23,392 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:23,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 846857105, now seen corresponding path program 26 times [2024-06-28 03:33:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532074459] [2024-06-28 03:33:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:23,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:24,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532074459] [2024-06-28 03:33:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532074459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:24,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:24,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:24,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775263611] [2024-06-28 03:33:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:24,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:24,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 315 transitions, 3105 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:24,883 INFO L124 PetriNetUnfolderBase]: 887/1719 cut-off events. [2024-06-28 03:33:24,883 INFO L125 PetriNetUnfolderBase]: For 217961/217961 co-relation queries the response was YES. [2024-06-28 03:33:24,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 1719 events. 887/1719 cut-off events. For 217961/217961 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10862 event pairs, 231 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 9978. Up to 1510 conditions per place. [2024-06-28 03:33:24,906 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 267 selfloop transitions, 65 changer transitions 0/334 dead transitions. [2024-06-28 03:33:24,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 334 transitions, 3829 flow [2024-06-28 03:33:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:33:24,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 03:33:24,907 INFO L175 Difference]: Start difference. First operand has 432 places, 315 transitions, 3105 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:33:24,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 334 transitions, 3829 flow [2024-06-28 03:33:26,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 334 transitions, 3623 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-28 03:33:26,074 INFO L231 Difference]: Finished difference. Result has 432 places, 315 transitions, 3040 flow [2024-06-28 03:33:26,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3040, PETRI_PLACES=432, PETRI_TRANSITIONS=315} [2024-06-28 03:33:26,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-28 03:33:26,075 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 315 transitions, 3040 flow [2024-06-28 03:33:26,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:26,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:26,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:26,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:33:26,075 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:26,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash -85275763, now seen corresponding path program 27 times [2024-06-28 03:33:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:26,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520955505] [2024-06-28 03:33:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520955505] [2024-06-28 03:33:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520955505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:33:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751994106] [2024-06-28 03:33:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:33:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:33:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:33:26,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:26,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 315 transitions, 3040 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:26,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:26,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:26,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:27,379 INFO L124 PetriNetUnfolderBase]: 891/1727 cut-off events. [2024-06-28 03:33:27,379 INFO L125 PetriNetUnfolderBase]: For 214087/214087 co-relation queries the response was YES. [2024-06-28 03:33:27,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 1727 events. 891/1727 cut-off events. For 214087/214087 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10908 event pairs, 184 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 9922. Up to 1353 conditions per place. [2024-06-28 03:33:27,402 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 245 selfloop transitions, 87 changer transitions 0/334 dead transitions. [2024-06-28 03:33:27,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 334 transitions, 3814 flow [2024-06-28 03:33:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:33:27,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:33:27,403 INFO L175 Difference]: Start difference. First operand has 432 places, 315 transitions, 3040 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:33:27,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 334 transitions, 3814 flow [2024-06-28 03:33:28,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 334 transitions, 3665 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:33:28,428 INFO L231 Difference]: Finished difference. Result has 431 places, 316 transitions, 3123 flow [2024-06-28 03:33:28,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3123, PETRI_PLACES=431, PETRI_TRANSITIONS=316} [2024-06-28 03:33:28,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-28 03:33:28,428 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 316 transitions, 3123 flow [2024-06-28 03:33:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:28,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:28,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:28,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:33:28,429 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:28,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 616099561, now seen corresponding path program 28 times [2024-06-28 03:33:28,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:28,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326460373] [2024-06-28 03:33:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:29,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:29,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326460373] [2024-06-28 03:33:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326460373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692987787] [2024-06-28 03:33:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:29,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:29,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 316 transitions, 3123 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:29,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:29,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:29,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:29,974 INFO L124 PetriNetUnfolderBase]: 895/1735 cut-off events. [2024-06-28 03:33:29,974 INFO L125 PetriNetUnfolderBase]: For 212844/212844 co-relation queries the response was YES. [2024-06-28 03:33:29,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 1735 events. 895/1735 cut-off events. For 212844/212844 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10994 event pairs, 182 based on Foata normal form. 2/1737 useless extension candidates. Maximal degree in co-relation 10056. Up to 1333 conditions per place. [2024-06-28 03:33:29,994 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 89 changer transitions 0/335 dead transitions. [2024-06-28 03:33:29,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 335 transitions, 3897 flow [2024-06-28 03:33:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:33:29,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:33:29,995 INFO L175 Difference]: Start difference. First operand has 431 places, 316 transitions, 3123 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:33:29,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 335 transitions, 3897 flow [2024-06-28 03:33:31,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 335 transitions, 3675 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:31,017 INFO L231 Difference]: Finished difference. Result has 433 places, 317 transitions, 3139 flow [2024-06-28 03:33:31,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3139, PETRI_PLACES=433, PETRI_TRANSITIONS=317} [2024-06-28 03:33:31,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2024-06-28 03:33:31,018 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 317 transitions, 3139 flow [2024-06-28 03:33:31,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:31,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:31,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:31,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:33:31,018 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:31,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:31,018 INFO L85 PathProgramCache]: Analyzing trace with hash 615955411, now seen corresponding path program 29 times [2024-06-28 03:33:31,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:31,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083862809] [2024-06-28 03:33:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:31,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083862809] [2024-06-28 03:33:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083862809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:31,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:31,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874346287] [2024-06-28 03:33:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:31,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:31,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:31,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:31,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 317 transitions, 3139 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:31,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:31,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:31,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:32,490 INFO L124 PetriNetUnfolderBase]: 935/1815 cut-off events. [2024-06-28 03:33:32,490 INFO L125 PetriNetUnfolderBase]: For 335560/335560 co-relation queries the response was YES. [2024-06-28 03:33:32,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12423 conditions, 1815 events. 935/1815 cut-off events. For 335560/335560 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11498 event pairs, 200 based on Foata normal form. 2/1817 useless extension candidates. Maximal degree in co-relation 12232. Up to 1257 conditions per place. [2024-06-28 03:33:32,516 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 245 selfloop transitions, 95 changer transitions 0/342 dead transitions. [2024-06-28 03:33:32,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 342 transitions, 4311 flow [2024-06-28 03:33:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:33:32,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:33:32,517 INFO L175 Difference]: Start difference. First operand has 433 places, 317 transitions, 3139 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:33:32,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 342 transitions, 4311 flow [2024-06-28 03:33:33,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 342 transitions, 4081 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:33,943 INFO L231 Difference]: Finished difference. Result has 435 places, 319 transitions, 3213 flow [2024-06-28 03:33:33,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2915, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3213, PETRI_PLACES=435, PETRI_TRANSITIONS=319} [2024-06-28 03:33:33,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-28 03:33:33,944 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 319 transitions, 3213 flow [2024-06-28 03:33:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:33,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:33,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:33,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:33:33,944 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:33,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 822758581, now seen corresponding path program 30 times [2024-06-28 03:33:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484365391] [2024-06-28 03:33:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484365391] [2024-06-28 03:33:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484365391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:34,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:34,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570450690] [2024-06-28 03:33:34,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:34,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:34,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 319 transitions, 3213 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:34,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:34,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:34,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:35,445 INFO L124 PetriNetUnfolderBase]: 926/1800 cut-off events. [2024-06-28 03:33:35,445 INFO L125 PetriNetUnfolderBase]: For 335540/335540 co-relation queries the response was YES. [2024-06-28 03:33:35,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10956 conditions, 1800 events. 926/1800 cut-off events. For 335540/335540 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11479 event pairs, 187 based on Foata normal form. 12/1812 useless extension candidates. Maximal degree in co-relation 10764. Up to 1384 conditions per place. [2024-06-28 03:33:35,470 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 231 selfloop transitions, 102 changer transitions 7/342 dead transitions. [2024-06-28 03:33:35,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 342 transitions, 4051 flow [2024-06-28 03:33:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:35,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:33:35,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:33:35,471 INFO L175 Difference]: Start difference. First operand has 435 places, 319 transitions, 3213 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:33:35,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 342 transitions, 4051 flow [2024-06-28 03:33:36,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 342 transitions, 3835 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 03:33:36,700 INFO L231 Difference]: Finished difference. Result has 438 places, 317 transitions, 3241 flow [2024-06-28 03:33:36,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3241, PETRI_PLACES=438, PETRI_TRANSITIONS=317} [2024-06-28 03:33:36,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-28 03:33:36,701 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 317 transitions, 3241 flow [2024-06-28 03:33:36,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:36,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:36,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:33:36,701 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:36,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1872512555, now seen corresponding path program 2 times [2024-06-28 03:33:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209819373] [2024-06-28 03:33:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:36,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:37,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209819373] [2024-06-28 03:33:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209819373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:37,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:37,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:33:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572227332] [2024-06-28 03:33:37,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:37,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:33:37,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:33:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:33:37,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:37,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 317 transitions, 3241 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:37,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:37,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:37,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:38,058 INFO L124 PetriNetUnfolderBase]: 943/1839 cut-off events. [2024-06-28 03:33:38,058 INFO L125 PetriNetUnfolderBase]: For 402447/402447 co-relation queries the response was YES. [2024-06-28 03:33:38,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12712 conditions, 1839 events. 943/1839 cut-off events. For 402447/402447 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11710 event pairs, 202 based on Foata normal form. 8/1847 useless extension candidates. Maximal degree in co-relation 12519. Up to 1253 conditions per place. [2024-06-28 03:33:38,081 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 97 changer transitions 8/343 dead transitions. [2024-06-28 03:33:38,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 343 transitions, 4407 flow [2024-06-28 03:33:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:33:38,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:33:38,082 INFO L175 Difference]: Start difference. First operand has 438 places, 317 transitions, 3241 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:33:38,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 343 transitions, 4407 flow [2024-06-28 03:33:39,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 343 transitions, 4109 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-28 03:33:39,735 INFO L231 Difference]: Finished difference. Result has 437 places, 314 transitions, 3119 flow [2024-06-28 03:33:39,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3119, PETRI_PLACES=437, PETRI_TRANSITIONS=314} [2024-06-28 03:33:39,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-28 03:33:39,735 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 314 transitions, 3119 flow [2024-06-28 03:33:39,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:39,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:39,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:39,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:33:39,735 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:39,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1082083797, now seen corresponding path program 31 times [2024-06-28 03:33:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150237330] [2024-06-28 03:33:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:40,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:40,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150237330] [2024-06-28 03:33:40,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150237330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:40,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:40,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:33:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71731574] [2024-06-28 03:33:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:33:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:33:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:33:40,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:40,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 314 transitions, 3119 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:40,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:40,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:40,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:41,068 INFO L124 PetriNetUnfolderBase]: 921/1793 cut-off events. [2024-06-28 03:33:41,068 INFO L125 PetriNetUnfolderBase]: For 320524/320524 co-relation queries the response was YES. [2024-06-28 03:33:41,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12037 conditions, 1793 events. 921/1793 cut-off events. For 320524/320524 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 11344 event pairs, 231 based on Foata normal form. 2/1795 useless extension candidates. Maximal degree in co-relation 11845. Up to 1428 conditions per place. [2024-06-28 03:33:41,093 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 254 selfloop transitions, 77 changer transitions 0/333 dead transitions. [2024-06-28 03:33:41,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 333 transitions, 3887 flow [2024-06-28 03:33:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:33:41,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:33:41,093 INFO L175 Difference]: Start difference. First operand has 437 places, 314 transitions, 3119 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:33:41,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 333 transitions, 3887 flow [2024-06-28 03:33:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 333 transitions, 3697 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:33:42,602 INFO L231 Difference]: Finished difference. Result has 433 places, 315 transitions, 3137 flow [2024-06-28 03:33:42,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3137, PETRI_PLACES=433, PETRI_TRANSITIONS=315} [2024-06-28 03:33:42,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2024-06-28 03:33:42,602 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 315 transitions, 3137 flow [2024-06-28 03:33:42,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:42,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:42,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:42,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:33:42,603 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:42,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1218710981, now seen corresponding path program 32 times [2024-06-28 03:33:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415071322] [2024-06-28 03:33:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:43,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415071322] [2024-06-28 03:33:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415071322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:43,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:43,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:43,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553726443] [2024-06-28 03:33:43,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:43,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:43,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:43,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:43,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 315 transitions, 3137 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:43,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:43,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:43,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:44,283 INFO L124 PetriNetUnfolderBase]: 925/1801 cut-off events. [2024-06-28 03:33:44,283 INFO L125 PetriNetUnfolderBase]: For 312931/312931 co-relation queries the response was YES. [2024-06-28 03:33:44,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12058 conditions, 1801 events. 925/1801 cut-off events. For 312931/312931 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11422 event pairs, 229 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 11869. Up to 1408 conditions per place. [2024-06-28 03:33:44,308 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 253 selfloop transitions, 79 changer transitions 0/334 dead transitions. [2024-06-28 03:33:44,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 334 transitions, 3905 flow [2024-06-28 03:33:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:33:44,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:33:44,309 INFO L175 Difference]: Start difference. First operand has 433 places, 315 transitions, 3137 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:33:44,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 334 transitions, 3905 flow [2024-06-28 03:33:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 334 transitions, 3713 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:45,835 INFO L231 Difference]: Finished difference. Result has 435 places, 316 transitions, 3159 flow [2024-06-28 03:33:45,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3159, PETRI_PLACES=435, PETRI_TRANSITIONS=316} [2024-06-28 03:33:45,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-28 03:33:45,835 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 316 transitions, 3159 flow [2024-06-28 03:33:45,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:45,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:45,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:45,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:33:45,836 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:45,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash 815406931, now seen corresponding path program 33 times [2024-06-28 03:33:45,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:45,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716678145] [2024-06-28 03:33:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:45,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716678145] [2024-06-28 03:33:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716678145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587752014] [2024-06-28 03:33:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:46,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:46,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:46,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:46,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 316 transitions, 3159 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:46,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:46,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:46,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:47,417 INFO L124 PetriNetUnfolderBase]: 922/1796 cut-off events. [2024-06-28 03:33:47,417 INFO L125 PetriNetUnfolderBase]: For 295806/295806 co-relation queries the response was YES. [2024-06-28 03:33:47,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11691 conditions, 1796 events. 922/1796 cut-off events. For 295806/295806 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11406 event pairs, 202 based on Foata normal form. 2/1798 useless extension candidates. Maximal degree in co-relation 11501. Up to 1431 conditions per place. [2024-06-28 03:33:47,442 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 242 selfloop transitions, 91 changer transitions 0/335 dead transitions. [2024-06-28 03:33:47,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 335 transitions, 3927 flow [2024-06-28 03:33:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:33:47,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:33:47,443 INFO L175 Difference]: Start difference. First operand has 435 places, 316 transitions, 3159 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:33:47,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 335 transitions, 3927 flow [2024-06-28 03:33:48,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 335 transitions, 3729 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:48,955 INFO L231 Difference]: Finished difference. Result has 437 places, 317 transitions, 3193 flow [2024-06-28 03:33:48,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3193, PETRI_PLACES=437, PETRI_TRANSITIONS=317} [2024-06-28 03:33:48,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-28 03:33:48,955 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 317 transitions, 3193 flow [2024-06-28 03:33:48,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:48,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:48,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:48,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:33:48,956 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:48,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash 815401351, now seen corresponding path program 34 times [2024-06-28 03:33:48,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:48,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534158637] [2024-06-28 03:33:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:48,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:49,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534158637] [2024-06-28 03:33:49,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534158637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:49,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408973502] [2024-06-28 03:33:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:49,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:49,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:49,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:49,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 317 transitions, 3193 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:49,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:49,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:50,380 INFO L124 PetriNetUnfolderBase]: 919/1791 cut-off events. [2024-06-28 03:33:50,380 INFO L125 PetriNetUnfolderBase]: For 277918/277918 co-relation queries the response was YES. [2024-06-28 03:33:50,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 1791 events. 919/1791 cut-off events. For 277918/277918 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11384 event pairs, 201 based on Foata normal form. 2/1793 useless extension candidates. Maximal degree in co-relation 11155. Up to 1386 conditions per place. [2024-06-28 03:33:50,405 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 95 changer transitions 0/335 dead transitions. [2024-06-28 03:33:50,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 335 transitions, 3915 flow [2024-06-28 03:33:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:33:50,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:33:50,406 INFO L175 Difference]: Start difference. First operand has 437 places, 317 transitions, 3193 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:33:50,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 335 transitions, 3915 flow [2024-06-28 03:33:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 335 transitions, 3675 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:51,807 INFO L231 Difference]: Finished difference. Result has 439 places, 317 transitions, 3149 flow [2024-06-28 03:33:51,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3149, PETRI_PLACES=439, PETRI_TRANSITIONS=317} [2024-06-28 03:33:51,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-28 03:33:51,807 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 317 transitions, 3149 flow [2024-06-28 03:33:51,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:51,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:51,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:51,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:33:51,808 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:51,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:51,808 INFO L85 PathProgramCache]: Analyzing trace with hash -380852623, now seen corresponding path program 35 times [2024-06-28 03:33:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:51,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641693362] [2024-06-28 03:33:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:51,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:52,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641693362] [2024-06-28 03:33:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641693362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:52,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:52,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989962076] [2024-06-28 03:33:52,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:52,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:52,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:52,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 317 transitions, 3149 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:52,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:52,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:52,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:53,229 INFO L124 PetriNetUnfolderBase]: 923/1799 cut-off events. [2024-06-28 03:33:53,229 INFO L125 PetriNetUnfolderBase]: For 281336/281336 co-relation queries the response was YES. [2024-06-28 03:33:53,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11387 conditions, 1799 events. 923/1799 cut-off events. For 281336/281336 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11442 event pairs, 225 based on Foata normal form. 2/1801 useless extension candidates. Maximal degree in co-relation 11195. Up to 1362 conditions per place. [2024-06-28 03:33:53,255 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 253 selfloop transitions, 81 changer transitions 0/336 dead transitions. [2024-06-28 03:33:53,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 336 transitions, 3919 flow [2024-06-28 03:33:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:33:53,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:33:53,256 INFO L175 Difference]: Start difference. First operand has 439 places, 317 transitions, 3149 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:33:53,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 336 transitions, 3919 flow [2024-06-28 03:33:54,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 336 transitions, 3683 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 03:33:54,496 INFO L231 Difference]: Finished difference. Result has 439 places, 318 transitions, 3133 flow [2024-06-28 03:33:54,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2917, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3133, PETRI_PLACES=439, PETRI_TRANSITIONS=318} [2024-06-28 03:33:54,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-28 03:33:54,496 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 318 transitions, 3133 flow [2024-06-28 03:33:54,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:54,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:54,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:54,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:33:54,497 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:54,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1085808447, now seen corresponding path program 36 times [2024-06-28 03:33:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636495042] [2024-06-28 03:33:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:55,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636495042] [2024-06-28 03:33:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636495042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:55,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151839004] [2024-06-28 03:33:55,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:55,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:55,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:55,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 318 transitions, 3133 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:55,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:55,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:55,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:55,937 INFO L124 PetriNetUnfolderBase]: 927/1807 cut-off events. [2024-06-28 03:33:55,937 INFO L125 PetriNetUnfolderBase]: For 274602/274602 co-relation queries the response was YES. [2024-06-28 03:33:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11357 conditions, 1807 events. 927/1807 cut-off events. For 274602/274602 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11497 event pairs, 233 based on Foata normal form. 2/1809 useless extension candidates. Maximal degree in co-relation 11165. Up to 1174 conditions per place. [2024-06-28 03:33:55,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 95 changer transitions 0/337 dead transitions. [2024-06-28 03:33:55,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 337 transitions, 3899 flow [2024-06-28 03:33:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:33:55,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:33:55,967 INFO L175 Difference]: Start difference. First operand has 439 places, 318 transitions, 3133 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:33:55,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 337 transitions, 3899 flow [2024-06-28 03:33:57,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 337 transitions, 3693 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 03:33:57,297 INFO L231 Difference]: Finished difference. Result has 441 places, 319 transitions, 3173 flow [2024-06-28 03:33:57,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3173, PETRI_PLACES=441, PETRI_TRANSITIONS=319} [2024-06-28 03:33:57,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-28 03:33:57,297 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 319 transitions, 3173 flow [2024-06-28 03:33:57,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:57,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:57,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:57,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:33:57,297 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:33:57,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -193316097, now seen corresponding path program 37 times [2024-06-28 03:33:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:57,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696772885] [2024-06-28 03:33:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:57,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:58,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:58,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696772885] [2024-06-28 03:33:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696772885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:58,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:58,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:33:58,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174462422] [2024-06-28 03:33:58,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:58,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:33:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:33:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:33:58,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:33:58,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 319 transitions, 3173 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:33:58,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:58,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:33:58,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:58,825 INFO L124 PetriNetUnfolderBase]: 931/1815 cut-off events. [2024-06-28 03:33:58,825 INFO L125 PetriNetUnfolderBase]: For 274606/274606 co-relation queries the response was YES. [2024-06-28 03:33:58,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11450 conditions, 1815 events. 931/1815 cut-off events. For 274606/274606 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11592 event pairs, 196 based on Foata normal form. 2/1817 useless extension candidates. Maximal degree in co-relation 11257. Up to 1230 conditions per place. [2024-06-28 03:33:58,846 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 135 changer transitions 0/336 dead transitions. [2024-06-28 03:33:58,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 336 transitions, 3943 flow [2024-06-28 03:33:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:33:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:33:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:33:58,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:33:58,847 INFO L175 Difference]: Start difference. First operand has 441 places, 319 transitions, 3173 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:33:58,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 336 transitions, 3943 flow [2024-06-28 03:34:00,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 336 transitions, 3709 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:00,213 INFO L231 Difference]: Finished difference. Result has 443 places, 320 transitions, 3263 flow [2024-06-28 03:34:00,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3263, PETRI_PLACES=443, PETRI_TRANSITIONS=320} [2024-06-28 03:34:00,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 03:34:00,214 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 320 transitions, 3263 flow [2024-06-28 03:34:00,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:00,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:00,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:00,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:34:00,214 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:00,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash -193321677, now seen corresponding path program 38 times [2024-06-28 03:34:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98873062] [2024-06-28 03:34:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:01,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98873062] [2024-06-28 03:34:01,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98873062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:01,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:01,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:01,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349589821] [2024-06-28 03:34:01,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:01,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:01,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:01,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:01,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 320 transitions, 3263 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:01,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:01,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:01,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:01,713 INFO L124 PetriNetUnfolderBase]: 971/1895 cut-off events. [2024-06-28 03:34:01,713 INFO L125 PetriNetUnfolderBase]: For 397082/397082 co-relation queries the response was YES. [2024-06-28 03:34:01,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13678 conditions, 1895 events. 971/1895 cut-off events. For 397082/397082 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 12152 event pairs, 216 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 13484. Up to 1214 conditions per place. [2024-06-28 03:34:01,741 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 137 changer transitions 0/343 dead transitions. [2024-06-28 03:34:01,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 343 transitions, 4427 flow [2024-06-28 03:34:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:34:01,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:34:01,742 INFO L175 Difference]: Start difference. First operand has 443 places, 320 transitions, 3263 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:34:01,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 343 transitions, 4427 flow [2024-06-28 03:34:03,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 343 transitions, 4115 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:03,497 INFO L231 Difference]: Finished difference. Result has 445 places, 322 transitions, 3327 flow [2024-06-28 03:34:03,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3327, PETRI_PLACES=445, PETRI_TRANSITIONS=322} [2024-06-28 03:34:03,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:34:03,498 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 322 transitions, 3327 flow [2024-06-28 03:34:03,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:03,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:03,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:03,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:34:03,498 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:03,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:03,498 INFO L85 PathProgramCache]: Analyzing trace with hash -185964447, now seen corresponding path program 39 times [2024-06-28 03:34:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:03,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354839439] [2024-06-28 03:34:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:04,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354839439] [2024-06-28 03:34:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354839439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:04,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:04,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:04,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083043557] [2024-06-28 03:34:04,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:04,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:04,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:04,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 322 transitions, 3327 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:04,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:04,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:04,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:04,917 INFO L124 PetriNetUnfolderBase]: 991/1939 cut-off events. [2024-06-28 03:34:04,917 INFO L125 PetriNetUnfolderBase]: For 504907/504907 co-relation queries the response was YES. [2024-06-28 03:34:04,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13909 conditions, 1939 events. 991/1939 cut-off events. For 504907/504907 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12486 event pairs, 220 based on Foata normal form. 12/1951 useless extension candidates. Maximal degree in co-relation 13714. Up to 1312 conditions per place. [2024-06-28 03:34:04,943 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 129 changer transitions 7/344 dead transitions. [2024-06-28 03:34:04,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 344 transitions, 4167 flow [2024-06-28 03:34:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:34:04,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:34:04,944 INFO L175 Difference]: Start difference. First operand has 445 places, 322 transitions, 3327 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:34:04,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 344 transitions, 4167 flow [2024-06-28 03:34:06,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 344 transitions, 3841 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:34:06,706 INFO L231 Difference]: Finished difference. Result has 448 places, 320 transitions, 3296 flow [2024-06-28 03:34:06,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3296, PETRI_PLACES=448, PETRI_TRANSITIONS=320} [2024-06-28 03:34:06,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-28 03:34:06,706 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 320 transitions, 3296 flow [2024-06-28 03:34:06,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:06,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:06,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:34:06,707 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:06,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:06,707 INFO L85 PathProgramCache]: Analyzing trace with hash -185687741, now seen corresponding path program 3 times [2024-06-28 03:34:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563791518] [2024-06-28 03:34:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:06,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:07,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:07,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563791518] [2024-06-28 03:34:07,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563791518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:07,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:07,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:34:07,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518604613] [2024-06-28 03:34:07,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:34:07,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:34:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:34:07,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:07,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 320 transitions, 3296 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:07,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:07,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:07,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:07,960 INFO L124 PetriNetUnfolderBase]: 994/1952 cut-off events. [2024-06-28 03:34:07,961 INFO L125 PetriNetUnfolderBase]: For 528899/528899 co-relation queries the response was YES. [2024-06-28 03:34:07,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 1952 events. 994/1952 cut-off events. For 528899/528899 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 12595 event pairs, 229 based on Foata normal form. 8/1960 useless extension candidates. Maximal degree in co-relation 14508. Up to 1288 conditions per place. [2024-06-28 03:34:07,988 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 207 selfloop transitions, 126 changer transitions 8/343 dead transitions. [2024-06-28 03:34:07,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 343 transitions, 4376 flow [2024-06-28 03:34:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:34:07,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:34:07,989 INFO L175 Difference]: Start difference. First operand has 448 places, 320 transitions, 3296 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:34:07,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 343 transitions, 4376 flow [2024-06-28 03:34:10,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 343 transitions, 4074 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-28 03:34:10,103 INFO L231 Difference]: Finished difference. Result has 448 places, 317 transitions, 3231 flow [2024-06-28 03:34:10,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=448, PETRI_TRANSITIONS=317} [2024-06-28 03:34:10,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-28 03:34:10,104 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 317 transitions, 3231 flow [2024-06-28 03:34:10,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:10,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:10,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:10,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:34:10,104 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:10,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1668986419, now seen corresponding path program 4 times [2024-06-28 03:34:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:10,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747896856] [2024-06-28 03:34:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:10,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747896856] [2024-06-28 03:34:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747896856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:10,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:10,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:34:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662072858] [2024-06-28 03:34:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:10,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:34:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:34:10,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:34:10,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:10,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 317 transitions, 3231 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:10,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:10,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:10,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:11,496 INFO L124 PetriNetUnfolderBase]: 959/1883 cut-off events. [2024-06-28 03:34:11,496 INFO L125 PetriNetUnfolderBase]: For 454603/454603 co-relation queries the response was YES. [2024-06-28 03:34:11,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12592 conditions, 1883 events. 959/1883 cut-off events. For 454603/454603 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12083 event pairs, 428 based on Foata normal form. 12/1895 useless extension candidates. Maximal degree in co-relation 12396. Up to 1784 conditions per place. [2024-06-28 03:34:11,517 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 19 changer transitions 8/333 dead transitions. [2024-06-28 03:34:11,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 333 transitions, 3969 flow [2024-06-28 03:34:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:34:11,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:34:11,518 INFO L175 Difference]: Start difference. First operand has 448 places, 317 transitions, 3231 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:34:11,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 333 transitions, 3969 flow [2024-06-28 03:34:13,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 333 transitions, 3685 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 03:34:13,242 INFO L231 Difference]: Finished difference. Result has 445 places, 313 transitions, 2965 flow [2024-06-28 03:34:13,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2965, PETRI_PLACES=445, PETRI_TRANSITIONS=313} [2024-06-28 03:34:13,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:34:13,243 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 313 transitions, 2965 flow [2024-06-28 03:34:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:13,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:13,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:34:13,244 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:13,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 63662929, now seen corresponding path program 5 times [2024-06-28 03:34:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:13,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402617194] [2024-06-28 03:34:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402617194] [2024-06-28 03:34:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402617194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:14,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:14,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:34:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486503037] [2024-06-28 03:34:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:14,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:34:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:34:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:34:14,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:14,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 313 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:14,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:14,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:14,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:14,711 INFO L124 PetriNetUnfolderBase]: 960/1894 cut-off events. [2024-06-28 03:34:14,711 INFO L125 PetriNetUnfolderBase]: For 460623/460623 co-relation queries the response was YES. [2024-06-28 03:34:14,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13092 conditions, 1894 events. 960/1894 cut-off events. For 460623/460623 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12145 event pairs, 437 based on Foata normal form. 8/1902 useless extension candidates. Maximal degree in co-relation 12898. Up to 1760 conditions per place. [2024-06-28 03:34:14,736 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 15 changer transitions 11/332 dead transitions. [2024-06-28 03:34:14,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 332 transitions, 3997 flow [2024-06-28 03:34:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:34:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:34:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 03:34:14,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-28 03:34:14,737 INFO L175 Difference]: Start difference. First operand has 445 places, 313 transitions, 2965 flow. Second operand 12 states and 119 transitions. [2024-06-28 03:34:14,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 332 transitions, 3997 flow [2024-06-28 03:34:16,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 332 transitions, 3933 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:34:16,895 INFO L231 Difference]: Finished difference. Result has 445 places, 307 transitions, 2900 flow [2024-06-28 03:34:16,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2900, PETRI_PLACES=445, PETRI_TRANSITIONS=307} [2024-06-28 03:34:16,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:34:16,896 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 307 transitions, 2900 flow [2024-06-28 03:34:16,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:16,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:16,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:16,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:34:16,897 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:16,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash -783649273, now seen corresponding path program 40 times [2024-06-28 03:34:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415245710] [2024-06-28 03:34:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415245710] [2024-06-28 03:34:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415245710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384354092] [2024-06-28 03:34:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:17,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:17,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 307 transitions, 2900 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:17,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:17,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:18,506 INFO L124 PetriNetUnfolderBase]: 938/1848 cut-off events. [2024-06-28 03:34:18,506 INFO L125 PetriNetUnfolderBase]: For 408225/408225 co-relation queries the response was YES. [2024-06-28 03:34:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12979 conditions, 1848 events. 938/1848 cut-off events. For 408225/408225 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11760 event pairs, 240 based on Foata normal form. 2/1850 useless extension candidates. Maximal degree in co-relation 12785. Up to 1286 conditions per place. [2024-06-28 03:34:18,531 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 210 selfloop transitions, 112 changer transitions 0/324 dead transitions. [2024-06-28 03:34:18,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 324 transitions, 3646 flow [2024-06-28 03:34:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:34:18,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:34:18,531 INFO L175 Difference]: Start difference. First operand has 445 places, 307 transitions, 2900 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:34:18,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 324 transitions, 3646 flow [2024-06-28 03:34:20,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 324 transitions, 3607 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 03:34:20,353 INFO L231 Difference]: Finished difference. Result has 437 places, 308 transitions, 3139 flow [2024-06-28 03:34:20,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3139, PETRI_PLACES=437, PETRI_TRANSITIONS=308} [2024-06-28 03:34:20,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-28 03:34:20,354 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 308 transitions, 3139 flow [2024-06-28 03:34:20,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:20,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:20,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:20,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 03:34:20,354 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:20,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 41 times [2024-06-28 03:34:20,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:20,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682186134] [2024-06-28 03:34:20,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:20,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:21,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:21,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682186134] [2024-06-28 03:34:21,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682186134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:21,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:21,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532533132] [2024-06-28 03:34:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:21,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:21,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 308 transitions, 3139 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:21,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:21,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:21,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:21,808 INFO L124 PetriNetUnfolderBase]: 942/1856 cut-off events. [2024-06-28 03:34:21,809 INFO L125 PetriNetUnfolderBase]: For 388026/388026 co-relation queries the response was YES. [2024-06-28 03:34:21,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13174 conditions, 1856 events. 942/1856 cut-off events. For 388026/388026 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11847 event pairs, 244 based on Foata normal form. 2/1858 useless extension candidates. Maximal degree in co-relation 12984. Up to 1280 conditions per place. [2024-06-28 03:34:21,834 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 210 selfloop transitions, 113 changer transitions 0/325 dead transitions. [2024-06-28 03:34:21,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 325 transitions, 3885 flow [2024-06-28 03:34:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:34:21,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:34:21,835 INFO L175 Difference]: Start difference. First operand has 437 places, 308 transitions, 3139 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:34:21,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 325 transitions, 3885 flow [2024-06-28 03:34:23,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 325 transitions, 3617 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:23,589 INFO L231 Difference]: Finished difference. Result has 439 places, 309 transitions, 3153 flow [2024-06-28 03:34:23,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3153, PETRI_PLACES=439, PETRI_TRANSITIONS=309} [2024-06-28 03:34:23,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-28 03:34:23,589 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 309 transitions, 3153 flow [2024-06-28 03:34:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:23,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:23,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:23,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 03:34:23,589 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:23,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash -843333127, now seen corresponding path program 6 times [2024-06-28 03:34:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:23,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939692119] [2024-06-28 03:34:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:24,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:24,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939692119] [2024-06-28 03:34:24,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939692119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:24,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:24,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:34:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439923489] [2024-06-28 03:34:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:24,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:34:24,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:24,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:34:24,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:34:24,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:24,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 309 transitions, 3153 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:24,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:24,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:24,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:24,939 INFO L124 PetriNetUnfolderBase]: 954/1884 cut-off events. [2024-06-28 03:34:24,939 INFO L125 PetriNetUnfolderBase]: For 451228/451228 co-relation queries the response was YES. [2024-06-28 03:34:24,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13259 conditions, 1884 events. 954/1884 cut-off events. For 451228/451228 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12044 event pairs, 439 based on Foata normal form. 8/1892 useless extension candidates. Maximal degree in co-relation 13068. Up to 1758 conditions per place. [2024-06-28 03:34:24,960 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 13 changer transitions 11/330 dead transitions. [2024-06-28 03:34:24,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 330 transitions, 4181 flow [2024-06-28 03:34:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:34:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:34:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 03:34:24,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 03:34:24,961 INFO L175 Difference]: Start difference. First operand has 439 places, 309 transitions, 3153 flow. Second operand 12 states and 118 transitions. [2024-06-28 03:34:24,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 330 transitions, 4181 flow [2024-06-28 03:34:26,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 330 transitions, 3909 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:26,783 INFO L231 Difference]: Finished difference. Result has 442 places, 305 transitions, 2886 flow [2024-06-28 03:34:26,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2881, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2886, PETRI_PLACES=442, PETRI_TRANSITIONS=305} [2024-06-28 03:34:26,783 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-28 03:34:26,783 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 305 transitions, 2886 flow [2024-06-28 03:34:26,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:26,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:26,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 03:34:26,783 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:26,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -783799003, now seen corresponding path program 42 times [2024-06-28 03:34:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:26,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013410969] [2024-06-28 03:34:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:27,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:27,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013410969] [2024-06-28 03:34:27,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013410969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:27,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444199147] [2024-06-28 03:34:27,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:27,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:27,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:27,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 305 transitions, 2886 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:27,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:27,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:27,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:28,210 INFO L124 PetriNetUnfolderBase]: 971/1915 cut-off events. [2024-06-28 03:34:28,210 INFO L125 PetriNetUnfolderBase]: For 520658/520658 co-relation queries the response was YES. [2024-06-28 03:34:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15042 conditions, 1915 events. 971/1915 cut-off events. For 520658/520658 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12243 event pairs, 248 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 14850. Up to 1202 conditions per place. [2024-06-28 03:34:28,249 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 208 selfloop transitions, 118 changer transitions 0/328 dead transitions. [2024-06-28 03:34:28,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 328 transitions, 4024 flow [2024-06-28 03:34:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:34:28,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:34:28,250 INFO L175 Difference]: Start difference. First operand has 442 places, 305 transitions, 2886 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:34:28,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 328 transitions, 4024 flow [2024-06-28 03:34:30,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 328 transitions, 3987 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:34:30,590 INFO L231 Difference]: Finished difference. Result has 437 places, 307 transitions, 3201 flow [2024-06-28 03:34:30,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3201, PETRI_PLACES=437, PETRI_TRANSITIONS=307} [2024-06-28 03:34:30,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-28 03:34:30,590 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 307 transitions, 3201 flow [2024-06-28 03:34:30,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:30,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:30,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:30,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 03:34:30,591 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:30,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1362666851, now seen corresponding path program 43 times [2024-06-28 03:34:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:30,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584822150] [2024-06-28 03:34:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:31,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584822150] [2024-06-28 03:34:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584822150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499304021] [2024-06-28 03:34:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:31,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:31,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:31,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 307 transitions, 3201 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:32,127 INFO L124 PetriNetUnfolderBase]: 975/1923 cut-off events. [2024-06-28 03:34:32,128 INFO L125 PetriNetUnfolderBase]: For 508320/508320 co-relation queries the response was YES. [2024-06-28 03:34:32,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15326 conditions, 1923 events. 975/1923 cut-off events. For 508320/508320 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12307 event pairs, 292 based on Foata normal form. 2/1925 useless extension candidates. Maximal degree in co-relation 15136. Up to 1364 conditions per place. [2024-06-28 03:34:32,154 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 105 changer transitions 0/324 dead transitions. [2024-06-28 03:34:32,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 324 transitions, 3953 flow [2024-06-28 03:34:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:34:32,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:34:32,155 INFO L175 Difference]: Start difference. First operand has 437 places, 307 transitions, 3201 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:34:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 324 transitions, 3953 flow [2024-06-28 03:34:34,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 324 transitions, 3748 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:34:34,263 INFO L231 Difference]: Finished difference. Result has 441 places, 308 transitions, 3266 flow [2024-06-28 03:34:34,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3266, PETRI_PLACES=441, PETRI_TRANSITIONS=308} [2024-06-28 03:34:34,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-28 03:34:34,264 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 308 transitions, 3266 flow [2024-06-28 03:34:34,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:34,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:34,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:34,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 03:34:34,264 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:34,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1187249077, now seen corresponding path program 44 times [2024-06-28 03:34:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412764404] [2024-06-28 03:34:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412764404] [2024-06-28 03:34:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412764404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954522538] [2024-06-28 03:34:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:35,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:35,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:35,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:35,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 308 transitions, 3266 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:35,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:35,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:35,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:35,767 INFO L124 PetriNetUnfolderBase]: 979/1931 cut-off events. [2024-06-28 03:34:35,767 INFO L125 PetriNetUnfolderBase]: For 514107/514107 co-relation queries the response was YES. [2024-06-28 03:34:35,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15497 conditions, 1931 events. 979/1931 cut-off events. For 514107/514107 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12359 event pairs, 256 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 15305. Up to 1372 conditions per place. [2024-06-28 03:34:35,795 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 108 changer transitions 0/326 dead transitions. [2024-06-28 03:34:35,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 326 transitions, 4020 flow [2024-06-28 03:34:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:34:35,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:34:35,796 INFO L175 Difference]: Start difference. First operand has 441 places, 308 transitions, 3266 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:34:35,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 326 transitions, 4020 flow [2024-06-28 03:34:38,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 326 transitions, 3762 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:38,136 INFO L231 Difference]: Finished difference. Result has 443 places, 309 transitions, 3276 flow [2024-06-28 03:34:38,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3008, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3276, PETRI_PLACES=443, PETRI_TRANSITIONS=309} [2024-06-28 03:34:38,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 03:34:38,137 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 309 transitions, 3276 flow [2024-06-28 03:34:38,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:38,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:38,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 03:34:38,137 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:38,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1362672431, now seen corresponding path program 45 times [2024-06-28 03:34:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815487206] [2024-06-28 03:34:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:38,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:38,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815487206] [2024-06-28 03:34:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815487206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:38,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603380952] [2024-06-28 03:34:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:39,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:39,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 309 transitions, 3276 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:39,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:39,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:39,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:39,626 INFO L124 PetriNetUnfolderBase]: 983/1939 cut-off events. [2024-06-28 03:34:39,626 INFO L125 PetriNetUnfolderBase]: For 521912/521912 co-relation queries the response was YES. [2024-06-28 03:34:39,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15594 conditions, 1939 events. 983/1939 cut-off events. For 521912/521912 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12440 event pairs, 292 based on Foata normal form. 2/1941 useless extension candidates. Maximal degree in co-relation 15401. Up to 1366 conditions per place. [2024-06-28 03:34:39,653 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 106 changer transitions 0/326 dead transitions. [2024-06-28 03:34:39,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 326 transitions, 4028 flow [2024-06-28 03:34:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:34:39,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:34:39,654 INFO L175 Difference]: Start difference. First operand has 443 places, 309 transitions, 3276 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:34:39,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 326 transitions, 4028 flow [2024-06-28 03:34:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 326 transitions, 3772 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:41,774 INFO L231 Difference]: Finished difference. Result has 445 places, 310 transitions, 3292 flow [2024-06-28 03:34:41,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3292, PETRI_PLACES=445, PETRI_TRANSITIONS=310} [2024-06-28 03:34:41,774 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:34:41,774 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 310 transitions, 3292 flow [2024-06-28 03:34:41,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:41,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:41,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:41,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 03:34:41,774 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:41,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1532973905, now seen corresponding path program 46 times [2024-06-28 03:34:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:41,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558088102] [2024-06-28 03:34:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:42,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:42,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558088102] [2024-06-28 03:34:42,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558088102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:42,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:42,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:42,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492621103] [2024-06-28 03:34:42,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:42,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:42,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 310 transitions, 3292 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:42,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:42,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:42,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:43,251 INFO L124 PetriNetUnfolderBase]: 974/1924 cut-off events. [2024-06-28 03:34:43,252 INFO L125 PetriNetUnfolderBase]: For 529196/529196 co-relation queries the response was YES. [2024-06-28 03:34:43,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 1924 events. 974/1924 cut-off events. For 529196/529196 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12377 event pairs, 251 based on Foata normal form. 12/1936 useless extension candidates. Maximal degree in co-relation 13939. Up to 1323 conditions per place. [2024-06-28 03:34:43,274 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 106 changer transitions 7/332 dead transitions. [2024-06-28 03:34:43,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 332 transitions, 4106 flow [2024-06-28 03:34:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:34:43,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:34:43,275 INFO L175 Difference]: Start difference. First operand has 445 places, 310 transitions, 3292 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:34:43,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 332 transitions, 4106 flow [2024-06-28 03:34:45,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 332 transitions, 3844 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:45,205 INFO L231 Difference]: Finished difference. Result has 447 places, 308 transitions, 3275 flow [2024-06-28 03:34:45,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3275, PETRI_PLACES=447, PETRI_TRANSITIONS=308} [2024-06-28 03:34:45,206 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-28 03:34:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 308 transitions, 3275 flow [2024-06-28 03:34:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:45,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:45,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:45,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 03:34:45,206 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:45,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2055595481, now seen corresponding path program 7 times [2024-06-28 03:34:45,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:45,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753765119] [2024-06-28 03:34:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:45,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:45,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753765119] [2024-06-28 03:34:45,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753765119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:45,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:45,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:34:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088455562] [2024-06-28 03:34:45,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:45,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:34:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:34:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:34:46,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:46,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 308 transitions, 3275 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:46,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:46,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:46,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:46,621 INFO L124 PetriNetUnfolderBase]: 977/1937 cut-off events. [2024-06-28 03:34:46,621 INFO L125 PetriNetUnfolderBase]: For 556440/556440 co-relation queries the response was YES. [2024-06-28 03:34:46,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14962 conditions, 1937 events. 977/1937 cut-off events. For 556440/556440 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12470 event pairs, 254 based on Foata normal form. 8/1945 useless extension candidates. Maximal degree in co-relation 14767. Up to 1289 conditions per place. [2024-06-28 03:34:46,648 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 107 changer transitions 8/332 dead transitions. [2024-06-28 03:34:46,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 332 transitions, 4340 flow [2024-06-28 03:34:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:34:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:34:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:34:46,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 03:34:46,649 INFO L175 Difference]: Start difference. First operand has 447 places, 308 transitions, 3275 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:34:46,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 332 transitions, 4340 flow [2024-06-28 03:34:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 332 transitions, 4079 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 03:34:48,864 INFO L231 Difference]: Finished difference. Result has 449 places, 305 transitions, 3211 flow [2024-06-28 03:34:48,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3211, PETRI_PLACES=449, PETRI_TRANSITIONS=305} [2024-06-28 03:34:48,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-28 03:34:48,865 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 305 transitions, 3211 flow [2024-06-28 03:34:48,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:48,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:48,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:48,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 03:34:48,865 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:48,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1525616675, now seen corresponding path program 47 times [2024-06-28 03:34:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:48,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651225475] [2024-06-28 03:34:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:49,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651225475] [2024-06-28 03:34:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651225475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:49,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:49,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449559744] [2024-06-28 03:34:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:49,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:49,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:49,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 305 transitions, 3211 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:49,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:49,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:49,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:50,337 INFO L124 PetriNetUnfolderBase]: 955/1891 cut-off events. [2024-06-28 03:34:50,337 INFO L125 PetriNetUnfolderBase]: For 479597/479597 co-relation queries the response was YES. [2024-06-28 03:34:50,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14385 conditions, 1891 events. 955/1891 cut-off events. For 479597/479597 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12111 event pairs, 253 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 14189. Up to 1321 conditions per place. [2024-06-28 03:34:50,364 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 106 changer transitions 0/322 dead transitions. [2024-06-28 03:34:50,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 322 transitions, 3907 flow [2024-06-28 03:34:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:34:50,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:34:50,365 INFO L175 Difference]: Start difference. First operand has 449 places, 305 transitions, 3211 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:34:50,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 322 transitions, 3907 flow [2024-06-28 03:34:52,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 322 transitions, 3656 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-28 03:34:52,827 INFO L231 Difference]: Finished difference. Result has 445 places, 305 transitions, 3176 flow [2024-06-28 03:34:52,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3176, PETRI_PLACES=445, PETRI_TRANSITIONS=305} [2024-06-28 03:34:52,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:34:52,828 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 305 transitions, 3176 flow [2024-06-28 03:34:52,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:52,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:52,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:52,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 03:34:52,828 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:52,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash -365858817, now seen corresponding path program 48 times [2024-06-28 03:34:52,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:52,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656276231] [2024-06-28 03:34:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:53,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:53,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656276231] [2024-06-28 03:34:53,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656276231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:53,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:53,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199384236] [2024-06-28 03:34:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:53,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:53,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:53,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 305 transitions, 3176 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:53,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:53,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:54,360 INFO L124 PetriNetUnfolderBase]: 959/1899 cut-off events. [2024-06-28 03:34:54,360 INFO L125 PetriNetUnfolderBase]: For 467052/467052 co-relation queries the response was YES. [2024-06-28 03:34:54,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14371 conditions, 1899 events. 959/1899 cut-off events. For 467052/467052 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12180 event pairs, 289 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 14177. Up to 1349 conditions per place. [2024-06-28 03:34:54,387 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 95 changer transitions 0/323 dead transitions. [2024-06-28 03:34:54,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 323 transitions, 3934 flow [2024-06-28 03:34:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:34:54,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:34:54,387 INFO L175 Difference]: Start difference. First operand has 445 places, 305 transitions, 3176 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:34:54,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 323 transitions, 3934 flow [2024-06-28 03:34:56,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 323 transitions, 3620 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:34:56,662 INFO L231 Difference]: Finished difference. Result has 445 places, 306 transitions, 3114 flow [2024-06-28 03:34:56,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3114, PETRI_PLACES=445, PETRI_TRANSITIONS=306} [2024-06-28 03:34:56,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:34:56,662 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 306 transitions, 3114 flow [2024-06-28 03:34:56,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:56,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:56,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:56,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 03:34:56,663 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:34:56,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1362816581, now seen corresponding path program 49 times [2024-06-28 03:34:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909867410] [2024-06-28 03:34:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:57,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:57,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909867410] [2024-06-28 03:34:57,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909867410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:57,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:57,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:34:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281882287] [2024-06-28 03:34:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:34:57,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:34:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:34:57,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:34:57,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 306 transitions, 3114 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:34:57,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:57,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:34:57,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:58,081 INFO L124 PetriNetUnfolderBase]: 963/1907 cut-off events. [2024-06-28 03:34:58,082 INFO L125 PetriNetUnfolderBase]: For 474830/474830 co-relation queries the response was YES. [2024-06-28 03:34:58,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14320 conditions, 1907 events. 963/1907 cut-off events. For 474830/474830 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12208 event pairs, 291 based on Foata normal form. 2/1909 useless extension candidates. Maximal degree in co-relation 14126. Up to 1321 conditions per place. [2024-06-28 03:34:58,106 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 103 changer transitions 0/323 dead transitions. [2024-06-28 03:34:58,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 323 transitions, 3860 flow [2024-06-28 03:34:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:34:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:34:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:34:58,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:34:58,108 INFO L175 Difference]: Start difference. First operand has 445 places, 306 transitions, 3114 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:34:58,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 323 transitions, 3860 flow [2024-06-28 03:35:00,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 323 transitions, 3618 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:00,234 INFO L231 Difference]: Finished difference. Result has 447 places, 307 transitions, 3142 flow [2024-06-28 03:35:00,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2872, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3142, PETRI_PLACES=447, PETRI_TRANSITIONS=307} [2024-06-28 03:35:00,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-28 03:35:00,235 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 307 transitions, 3142 flow [2024-06-28 03:35:00,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:00,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:00,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:00,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 03:35:00,235 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:00,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash -365864397, now seen corresponding path program 50 times [2024-06-28 03:35:00,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:00,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571088790] [2024-06-28 03:35:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:01,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:01,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571088790] [2024-06-28 03:35:01,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571088790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723733114] [2024-06-28 03:35:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:01,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:01,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 307 transitions, 3142 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:01,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:01,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:01,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:01,764 INFO L124 PetriNetUnfolderBase]: 967/1915 cut-off events. [2024-06-28 03:35:01,764 INFO L125 PetriNetUnfolderBase]: For 481507/481507 co-relation queries the response was YES. [2024-06-28 03:35:01,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14419 conditions, 1915 events. 967/1915 cut-off events. For 481507/481507 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12279 event pairs, 291 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 14224. Up to 1351 conditions per place. [2024-06-28 03:35:01,789 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 227 selfloop transitions, 96 changer transitions 0/325 dead transitions. [2024-06-28 03:35:01,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 325 transitions, 3904 flow [2024-06-28 03:35:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:35:01,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:35:01,790 INFO L175 Difference]: Start difference. First operand has 447 places, 307 transitions, 3142 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:35:01,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 325 transitions, 3904 flow [2024-06-28 03:35:04,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 325 transitions, 3644 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:04,149 INFO L231 Difference]: Finished difference. Result has 449 places, 308 transitions, 3140 flow [2024-06-28 03:35:04,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2882, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3140, PETRI_PLACES=449, PETRI_TRANSITIONS=308} [2024-06-28 03:35:04,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-28 03:35:04,150 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 308 transitions, 3140 flow [2024-06-28 03:35:04,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:04,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:04,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:04,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 03:35:04,150 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:04,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash -366008547, now seen corresponding path program 51 times [2024-06-28 03:35:04,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:04,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963889023] [2024-06-28 03:35:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:04,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963889023] [2024-06-28 03:35:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963889023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:05,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:05,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:05,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771293780] [2024-06-28 03:35:05,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:05,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:05,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:05,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 308 transitions, 3140 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:05,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:05,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:05,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:05,735 INFO L124 PetriNetUnfolderBase]: 1007/1995 cut-off events. [2024-06-28 03:35:05,735 INFO L125 PetriNetUnfolderBase]: For 618522/618522 co-relation queries the response was YES. [2024-06-28 03:35:05,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16698 conditions, 1995 events. 1007/1995 cut-off events. For 618522/618522 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12862 event pairs, 313 based on Foata normal form. 2/1997 useless extension candidates. Maximal degree in co-relation 16502. Up to 1323 conditions per place. [2024-06-28 03:35:05,762 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 98 changer transitions 0/332 dead transitions. [2024-06-28 03:35:05,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 332 transitions, 4320 flow [2024-06-28 03:35:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:35:05,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:35:05,764 INFO L175 Difference]: Start difference. First operand has 449 places, 308 transitions, 3140 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:35:05,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 332 transitions, 4320 flow [2024-06-28 03:35:08,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 332 transitions, 4072 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:08,181 INFO L231 Difference]: Finished difference. Result has 451 places, 310 transitions, 3218 flow [2024-06-28 03:35:08,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3218, PETRI_PLACES=451, PETRI_TRANSITIONS=310} [2024-06-28 03:35:08,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 421 predicate places. [2024-06-28 03:35:08,182 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 310 transitions, 3218 flow [2024-06-28 03:35:08,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:08,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:08,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:08,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 03:35:08,183 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:08,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash -844046631, now seen corresponding path program 52 times [2024-06-28 03:35:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:08,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083622820] [2024-06-28 03:35:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:08,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:08,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083622820] [2024-06-28 03:35:08,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083622820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:08,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:08,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:35:08,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217605858] [2024-06-28 03:35:08,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:08,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:35:08,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:35:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:35:09,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:09,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 310 transitions, 3218 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:09,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:09,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:09,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:09,657 INFO L124 PetriNetUnfolderBase]: 1004/1990 cut-off events. [2024-06-28 03:35:09,657 INFO L125 PetriNetUnfolderBase]: For 603751/603751 co-relation queries the response was YES. [2024-06-28 03:35:09,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16291 conditions, 1990 events. 1004/1990 cut-off events. For 603751/603751 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12843 event pairs, 310 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 16094. Up to 1146 conditions per place. [2024-06-28 03:35:09,685 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 118 changer transitions 0/331 dead transitions. [2024-06-28 03:35:09,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 331 transitions, 4264 flow [2024-06-28 03:35:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:35:09,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:35:09,686 INFO L175 Difference]: Start difference. First operand has 451 places, 310 transitions, 3218 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:35:09,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 331 transitions, 4264 flow [2024-06-28 03:35:12,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 331 transitions, 4080 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:12,352 INFO L231 Difference]: Finished difference. Result has 455 places, 310 transitions, 3274 flow [2024-06-28 03:35:12,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3274, PETRI_PLACES=455, PETRI_TRANSITIONS=310} [2024-06-28 03:35:12,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-28 03:35:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 310 transitions, 3274 flow [2024-06-28 03:35:12,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:12,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:12,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:12,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 03:35:12,353 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:12,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash 363139493, now seen corresponding path program 53 times [2024-06-28 03:35:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653386988] [2024-06-28 03:35:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:13,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:13,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653386988] [2024-06-28 03:35:13,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653386988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:13,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:13,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:13,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976630327] [2024-06-28 03:35:13,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:13,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:13,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:13,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:13,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 310 transitions, 3274 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:13,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:13,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:13,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:13,850 INFO L124 PetriNetUnfolderBase]: 995/1975 cut-off events. [2024-06-28 03:35:13,850 INFO L125 PetriNetUnfolderBase]: For 610686/610686 co-relation queries the response was YES. [2024-06-28 03:35:13,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14976 conditions, 1975 events. 995/1975 cut-off events. For 610686/610686 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12772 event pairs, 301 based on Foata normal form. 12/1987 useless extension candidates. Maximal degree in co-relation 14777. Up to 1383 conditions per place. [2024-06-28 03:35:13,878 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 95 changer transitions 7/332 dead transitions. [2024-06-28 03:35:13,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 332 transitions, 4096 flow [2024-06-28 03:35:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:35:13,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:35:13,885 INFO L175 Difference]: Start difference. First operand has 455 places, 310 transitions, 3274 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:35:13,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 332 transitions, 4096 flow [2024-06-28 03:35:16,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 332 transitions, 3584 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-06-28 03:35:16,535 INFO L231 Difference]: Finished difference. Result has 453 places, 308 transitions, 2995 flow [2024-06-28 03:35:16,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2995, PETRI_PLACES=453, PETRI_TRANSITIONS=308} [2024-06-28 03:35:16,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-28 03:35:16,535 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 308 transitions, 2995 flow [2024-06-28 03:35:16,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:16,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:16,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:16,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 03:35:16,536 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:16,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash 363416199, now seen corresponding path program 8 times [2024-06-28 03:35:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:16,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003355476] [2024-06-28 03:35:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003355476] [2024-06-28 03:35:17,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003355476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:17,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:17,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:35:17,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687494078] [2024-06-28 03:35:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:17,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:35:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:35:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:35:17,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:17,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 308 transitions, 2995 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:17,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:17,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:17,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:17,908 INFO L124 PetriNetUnfolderBase]: 991/1975 cut-off events. [2024-06-28 03:35:17,908 INFO L125 PetriNetUnfolderBase]: For 614242/614242 co-relation queries the response was YES. [2024-06-28 03:35:17,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14949 conditions, 1975 events. 991/1975 cut-off events. For 614242/614242 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12823 event pairs, 305 based on Foata normal form. 8/1983 useless extension candidates. Maximal degree in co-relation 14753. Up to 1321 conditions per place. [2024-06-28 03:35:17,936 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 96 changer transitions 8/331 dead transitions. [2024-06-28 03:35:17,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 331 transitions, 4085 flow [2024-06-28 03:35:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:35:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:35:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:35:17,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:35:17,937 INFO L175 Difference]: Start difference. First operand has 453 places, 308 transitions, 2995 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:35:17,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 331 transitions, 4085 flow [2024-06-28 03:35:19,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 331 transitions, 3779 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-28 03:35:19,937 INFO L231 Difference]: Finished difference. Result has 454 places, 304 transitions, 2835 flow [2024-06-28 03:35:19,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2835, PETRI_PLACES=454, PETRI_TRANSITIONS=304} [2024-06-28 03:35:19,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 424 predicate places. [2024-06-28 03:35:19,937 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 304 transitions, 2835 flow [2024-06-28 03:35:19,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:19,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:19,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 03:35:19,937 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:19,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -166557027, now seen corresponding path program 54 times [2024-06-28 03:35:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496251112] [2024-06-28 03:35:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496251112] [2024-06-28 03:35:20,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496251112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:20,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197117024] [2024-06-28 03:35:20,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:21,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:21,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 304 transitions, 2835 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:21,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:21,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:21,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:21,566 INFO L124 PetriNetUnfolderBase]: 969/1929 cut-off events. [2024-06-28 03:35:21,566 INFO L125 PetriNetUnfolderBase]: For 535106/535106 co-relation queries the response was YES. [2024-06-28 03:35:21,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14267 conditions, 1929 events. 969/1929 cut-off events. For 535106/535106 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12378 event pairs, 304 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 14071. Up to 1388 conditions per place. [2024-06-28 03:35:21,594 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 92 changer transitions 0/321 dead transitions. [2024-06-28 03:35:21,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 321 transitions, 3582 flow [2024-06-28 03:35:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:35:21,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:35:21,595 INFO L175 Difference]: Start difference. First operand has 454 places, 304 transitions, 2835 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:35:21,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 321 transitions, 3582 flow [2024-06-28 03:35:23,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 321 transitions, 3303 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-28 03:35:23,324 INFO L231 Difference]: Finished difference. Result has 449 places, 305 transitions, 2801 flow [2024-06-28 03:35:23,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2801, PETRI_PLACES=449, PETRI_TRANSITIONS=305} [2024-06-28 03:35:23,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-28 03:35:23,324 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 305 transitions, 2801 flow [2024-06-28 03:35:23,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:23,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:23,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:23,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 03:35:23,325 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:23,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:23,325 INFO L85 PathProgramCache]: Analyzing trace with hash -166562607, now seen corresponding path program 55 times [2024-06-28 03:35:23,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:23,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038715291] [2024-06-28 03:35:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:24,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038715291] [2024-06-28 03:35:24,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038715291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:24,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:24,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963376891] [2024-06-28 03:35:24,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:24,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:24,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:24,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:24,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:24,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 305 transitions, 2801 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:24,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:24,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:24,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:24,842 INFO L124 PetriNetUnfolderBase]: 966/1924 cut-off events. [2024-06-28 03:35:24,842 INFO L125 PetriNetUnfolderBase]: For 453786/453786 co-relation queries the response was YES. [2024-06-28 03:35:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13349 conditions, 1924 events. 966/1924 cut-off events. For 453786/453786 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12387 event pairs, 303 based on Foata normal form. 2/1926 useless extension candidates. Maximal degree in co-relation 13156. Up to 1363 conditions per place. [2024-06-28 03:35:24,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 94 changer transitions 0/321 dead transitions. [2024-06-28 03:35:24,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 321 transitions, 3489 flow [2024-06-28 03:35:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:35:24,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:35:24,866 INFO L175 Difference]: Start difference. First operand has 449 places, 305 transitions, 2801 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:35:24,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 321 transitions, 3489 flow [2024-06-28 03:35:26,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 321 transitions, 3209 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:26,853 INFO L231 Difference]: Finished difference. Result has 451 places, 305 transitions, 2713 flow [2024-06-28 03:35:26,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2713, PETRI_PLACES=451, PETRI_TRANSITIONS=305} [2024-06-28 03:35:26,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 421 predicate places. [2024-06-28 03:35:26,854 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 305 transitions, 2713 flow [2024-06-28 03:35:26,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 03:35:26,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:26,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 03:35:26,854 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:26,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash 700557998, now seen corresponding path program 1 times [2024-06-28 03:35:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126287666] [2024-06-28 03:35:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:27,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126287666] [2024-06-28 03:35:27,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126287666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:27,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:27,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164530351] [2024-06-28 03:35:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:27,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:28,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:28,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 305 transitions, 2713 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:28,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:28,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:28,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:28,560 INFO L124 PetriNetUnfolderBase]: 974/1944 cut-off events. [2024-06-28 03:35:28,561 INFO L125 PetriNetUnfolderBase]: For 498586/498586 co-relation queries the response was YES. [2024-06-28 03:35:28,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13254 conditions, 1944 events. 974/1944 cut-off events. For 498586/498586 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12571 event pairs, 336 based on Foata normal form. 6/1950 useless extension candidates. Maximal degree in co-relation 13060. Up to 1819 conditions per place. [2024-06-28 03:35:28,656 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 287 selfloop transitions, 21 changer transitions 21/331 dead transitions. [2024-06-28 03:35:28,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 331 transitions, 3435 flow [2024-06-28 03:35:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-28 03:35:28,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:35:28,657 INFO L175 Difference]: Start difference. First operand has 451 places, 305 transitions, 2713 flow. Second operand 13 states and 130 transitions. [2024-06-28 03:35:28,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 331 transitions, 3435 flow [2024-06-28 03:35:30,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 331 transitions, 3106 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:35:30,414 INFO L231 Difference]: Finished difference. Result has 453 places, 299 transitions, 2385 flow [2024-06-28 03:35:30,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2385, PETRI_PLACES=453, PETRI_TRANSITIONS=299} [2024-06-28 03:35:30,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-28 03:35:30,415 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 299 transitions, 2385 flow [2024-06-28 03:35:30,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:30,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:30,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:30,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 03:35:30,415 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:30,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:30,416 INFO L85 PathProgramCache]: Analyzing trace with hash 595147422, now seen corresponding path program 2 times [2024-06-28 03:35:30,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:30,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364776496] [2024-06-28 03:35:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:30,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364776496] [2024-06-28 03:35:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364776496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:31,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:31,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:31,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835437684] [2024-06-28 03:35:31,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:31,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:31,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:31,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 299 transitions, 2385 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:31,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:31,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:31,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:32,098 INFO L124 PetriNetUnfolderBase]: 950/1898 cut-off events. [2024-06-28 03:35:32,098 INFO L125 PetriNetUnfolderBase]: For 477573/477573 co-relation queries the response was YES. [2024-06-28 03:35:32,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12567 conditions, 1898 events. 950/1898 cut-off events. For 477573/477573 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12189 event pairs, 301 based on Foata normal form. 6/1904 useless extension candidates. Maximal degree in co-relation 12372. Up to 1748 conditions per place. [2024-06-28 03:35:32,124 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 20 changer transitions 23/325 dead transitions. [2024-06-28 03:35:32,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 325 transitions, 3093 flow [2024-06-28 03:35:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 03:35:32,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-28 03:35:32,125 INFO L175 Difference]: Start difference. First operand has 453 places, 299 transitions, 2385 flow. Second operand 13 states and 127 transitions. [2024-06-28 03:35:32,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 325 transitions, 3093 flow [2024-06-28 03:35:33,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 325 transitions, 3041 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:35:33,685 INFO L231 Difference]: Finished difference. Result has 445 places, 292 transitions, 2329 flow [2024-06-28 03:35:33,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2329, PETRI_PLACES=445, PETRI_TRANSITIONS=292} [2024-06-28 03:35:33,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:35:33,685 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 292 transitions, 2329 flow [2024-06-28 03:35:33,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:33,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:33,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:33,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 03:35:33,685 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:33,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1219183146, now seen corresponding path program 3 times [2024-06-28 03:35:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:33,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432467357] [2024-06-28 03:35:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:34,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:34,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432467357] [2024-06-28 03:35:34,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432467357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:34,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:34,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:34,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128034319] [2024-06-28 03:35:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:34,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:34,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 292 transitions, 2329 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:34,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:34,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:34,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:35,348 INFO L124 PetriNetUnfolderBase]: 925/1845 cut-off events. [2024-06-28 03:35:35,348 INFO L125 PetriNetUnfolderBase]: For 471094/471094 co-relation queries the response was YES. [2024-06-28 03:35:35,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12354 conditions, 1845 events. 925/1845 cut-off events. For 471094/471094 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11771 event pairs, 275 based on Foata normal form. 6/1851 useless extension candidates. Maximal degree in co-relation 12162. Up to 1642 conditions per place. [2024-06-28 03:35:35,372 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 29 changer transitions 16/316 dead transitions. [2024-06-28 03:35:35,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 316 transitions, 3019 flow [2024-06-28 03:35:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-28 03:35:35,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32754342431761785 [2024-06-28 03:35:35,373 INFO L175 Difference]: Start difference. First operand has 445 places, 292 transitions, 2329 flow. Second operand 13 states and 132 transitions. [2024-06-28 03:35:35,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 316 transitions, 3019 flow [2024-06-28 03:35:37,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 316 transitions, 2964 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:35:37,174 INFO L231 Difference]: Finished difference. Result has 436 places, 286 transitions, 2280 flow [2024-06-28 03:35:37,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2280, PETRI_PLACES=436, PETRI_TRANSITIONS=286} [2024-06-28 03:35:37,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-28 03:35:37,174 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 286 transitions, 2280 flow [2024-06-28 03:35:37,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:37,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:37,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:37,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 03:35:37,175 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:37,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -65127162, now seen corresponding path program 4 times [2024-06-28 03:35:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:37,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237561330] [2024-06-28 03:35:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:37,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:38,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237561330] [2024-06-28 03:35:38,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237561330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:38,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:38,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:35:38,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896223831] [2024-06-28 03:35:38,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:38,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:35:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:35:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:35:38,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:38,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 286 transitions, 2280 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:38,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:38,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:38,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:38,579 INFO L124 PetriNetUnfolderBase]: 890/1777 cut-off events. [2024-06-28 03:35:38,580 INFO L125 PetriNetUnfolderBase]: For 406305/406305 co-relation queries the response was YES. [2024-06-28 03:35:38,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11266 conditions, 1777 events. 890/1777 cut-off events. For 406305/406305 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11262 event pairs, 236 based on Foata normal form. 6/1783 useless extension candidates. Maximal degree in co-relation 11077. Up to 1467 conditions per place. [2024-06-28 03:35:38,603 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 47 changer transitions 31/307 dead transitions. [2024-06-28 03:35:38,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 307 transitions, 2956 flow [2024-06-28 03:35:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:35:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:35:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:35:38,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:35:38,604 INFO L175 Difference]: Start difference. First operand has 436 places, 286 transitions, 2280 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:35:38,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 307 transitions, 2956 flow [2024-06-28 03:35:39,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 307 transitions, 2888 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:35:39,841 INFO L231 Difference]: Finished difference. Result has 430 places, 263 transitions, 2104 flow [2024-06-28 03:35:39,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2104, PETRI_PLACES=430, PETRI_TRANSITIONS=263} [2024-06-28 03:35:39,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-28 03:35:39,841 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 263 transitions, 2104 flow [2024-06-28 03:35:39,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:39,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:39,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:39,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 03:35:39,841 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:39,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1874369958, now seen corresponding path program 5 times [2024-06-28 03:35:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:39,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67487484] [2024-06-28 03:35:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:40,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:40,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67487484] [2024-06-28 03:35:40,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67487484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:40,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:40,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330939901] [2024-06-28 03:35:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:40,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:40,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:40,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:41,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:41,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 263 transitions, 2104 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:41,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:41,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:41,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:41,504 INFO L124 PetriNetUnfolderBase]: 825/1657 cut-off events. [2024-06-28 03:35:41,505 INFO L125 PetriNetUnfolderBase]: For 406141/406141 co-relation queries the response was YES. [2024-06-28 03:35:41,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 1657 events. 825/1657 cut-off events. For 406141/406141 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10315 event pairs, 251 based on Foata normal form. 6/1663 useless extension candidates. Maximal degree in co-relation 10579. Up to 1529 conditions per place. [2024-06-28 03:35:41,527 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 245 selfloop transitions, 24 changer transitions 16/287 dead transitions. [2024-06-28 03:35:41,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 287 transitions, 2744 flow [2024-06-28 03:35:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 03:35:41,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-28 03:35:41,527 INFO L175 Difference]: Start difference. First operand has 430 places, 263 transitions, 2104 flow. Second operand 13 states and 127 transitions. [2024-06-28 03:35:41,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 287 transitions, 2744 flow [2024-06-28 03:35:42,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 287 transitions, 2616 flow, removed 11 selfloop flow, removed 15 redundant places. [2024-06-28 03:35:42,875 INFO L231 Difference]: Finished difference. Result has 409 places, 257 transitions, 1971 flow [2024-06-28 03:35:42,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1971, PETRI_PLACES=409, PETRI_TRANSITIONS=257} [2024-06-28 03:35:42,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 03:35:42,876 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 257 transitions, 1971 flow [2024-06-28 03:35:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:42,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:42,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:42,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 03:35:42,876 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:42,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -943316138, now seen corresponding path program 6 times [2024-06-28 03:35:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352802992] [2024-06-28 03:35:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352802992] [2024-06-28 03:35:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352802992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:35:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841101206] [2024-06-28 03:35:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:35:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:35:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:35:43,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:43,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 257 transitions, 1971 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:43,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:43,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:43,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:44,244 INFO L124 PetriNetUnfolderBase]: 808/1626 cut-off events. [2024-06-28 03:35:44,244 INFO L125 PetriNetUnfolderBase]: For 383050/383050 co-relation queries the response was YES. [2024-06-28 03:35:44,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10363 conditions, 1626 events. 808/1626 cut-off events. For 383050/383050 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10071 event pairs, 220 based on Foata normal form. 6/1632 useless extension candidates. Maximal degree in co-relation 10192. Up to 1281 conditions per place. [2024-06-28 03:35:44,265 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 212 selfloop transitions, 30 changer transitions 34/278 dead transitions. [2024-06-28 03:35:44,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 278 transitions, 2581 flow [2024-06-28 03:35:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:35:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:35:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 03:35:44,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:35:44,266 INFO L175 Difference]: Start difference. First operand has 409 places, 257 transitions, 1971 flow. Second operand 12 states and 124 transitions. [2024-06-28 03:35:44,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 278 transitions, 2581 flow [2024-06-28 03:35:45,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 278 transitions, 2525 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:35:45,627 INFO L231 Difference]: Finished difference. Result has 402 places, 231 transitions, 1754 flow [2024-06-28 03:35:45,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1754, PETRI_PLACES=402, PETRI_TRANSITIONS=231} [2024-06-28 03:35:45,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-28 03:35:45,627 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 231 transitions, 1754 flow [2024-06-28 03:35:45,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:45,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:45,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:45,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 03:35:45,627 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:45,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -121483392, now seen corresponding path program 7 times [2024-06-28 03:35:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141504705] [2024-06-28 03:35:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141504705] [2024-06-28 03:35:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141504705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507939349] [2024-06-28 03:35:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:46,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:46,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 231 transitions, 1754 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:46,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:46,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:46,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:47,168 INFO L124 PetriNetUnfolderBase]: 735/1481 cut-off events. [2024-06-28 03:35:47,168 INFO L125 PetriNetUnfolderBase]: For 371612/371612 co-relation queries the response was YES. [2024-06-28 03:35:47,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9731 conditions, 1481 events. 735/1481 cut-off events. For 371612/371612 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9021 event pairs, 216 based on Foata normal form. 6/1487 useless extension candidates. Maximal degree in co-relation 9562. Up to 1375 conditions per place. [2024-06-28 03:35:47,186 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 14 changer transitions 21/255 dead transitions. [2024-06-28 03:35:47,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 255 transitions, 2320 flow [2024-06-28 03:35:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 03:35:47,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-28 03:35:47,187 INFO L175 Difference]: Start difference. First operand has 402 places, 231 transitions, 1754 flow. Second operand 13 states and 127 transitions. [2024-06-28 03:35:47,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 255 transitions, 2320 flow [2024-06-28 03:35:48,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 255 transitions, 2182 flow, removed 15 selfloop flow, removed 19 redundant places. [2024-06-28 03:35:48,250 INFO L231 Difference]: Finished difference. Result has 375 places, 225 transitions, 1608 flow [2024-06-28 03:35:48,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1608, PETRI_PLACES=375, PETRI_TRANSITIONS=225} [2024-06-28 03:35:48,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 03:35:48,251 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 225 transitions, 1608 flow [2024-06-28 03:35:48,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:48,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:48,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:48,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 03:35:48,251 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:48,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1977570330, now seen corresponding path program 8 times [2024-06-28 03:35:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:48,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953980327] [2024-06-28 03:35:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:48,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:49,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953980327] [2024-06-28 03:35:49,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953980327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461563898] [2024-06-28 03:35:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:49,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:49,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 225 transitions, 1608 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:49,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:49,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:49,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:49,911 INFO L124 PetriNetUnfolderBase]: 711/1435 cut-off events. [2024-06-28 03:35:49,911 INFO L125 PetriNetUnfolderBase]: For 365833/365833 co-relation queries the response was YES. [2024-06-28 03:35:49,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 1435 events. 711/1435 cut-off events. For 365833/365833 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8691 event pairs, 208 based on Foata normal form. 6/1441 useless extension candidates. Maximal degree in co-relation 9128. Up to 1292 conditions per place. [2024-06-28 03:35:49,928 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 17 changer transitions 16/248 dead transitions. [2024-06-28 03:35:49,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 248 transitions, 2158 flow [2024-06-28 03:35:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-28 03:35:49,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3200992555831266 [2024-06-28 03:35:49,929 INFO L175 Difference]: Start difference. First operand has 375 places, 225 transitions, 1608 flow. Second operand 13 states and 129 transitions. [2024-06-28 03:35:49,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 248 transitions, 2158 flow [2024-06-28 03:35:50,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 248 transitions, 2124 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:35:50,994 INFO L231 Difference]: Finished difference. Result has 368 places, 219 transitions, 1556 flow [2024-06-28 03:35:50,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1556, PETRI_PLACES=368, PETRI_TRANSITIONS=219} [2024-06-28 03:35:50,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 03:35:50,994 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 219 transitions, 1556 flow [2024-06-28 03:35:50,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:50,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:50,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 03:35:50,995 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:50,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2092861500, now seen corresponding path program 9 times [2024-06-28 03:35:50,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:50,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763228368] [2024-06-28 03:35:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:50,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:52,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763228368] [2024-06-28 03:35:52,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763228368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:52,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:52,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:35:52,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055004076] [2024-06-28 03:35:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:52,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:35:52,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:52,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:35:52,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:35:52,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:52,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 219 transitions, 1556 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:52,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:52,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:52,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:52,676 INFO L124 PetriNetUnfolderBase]: 691/1399 cut-off events. [2024-06-28 03:35:52,676 INFO L125 PetriNetUnfolderBase]: For 360155/360155 co-relation queries the response was YES. [2024-06-28 03:35:52,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9110 conditions, 1399 events. 691/1399 cut-off events. For 360155/360155 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8431 event pairs, 204 based on Foata normal form. 6/1405 useless extension candidates. Maximal degree in co-relation 8950. Up to 1288 conditions per place. [2024-06-28 03:35:52,693 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 11 changer transitions 28/242 dead transitions. [2024-06-28 03:35:52,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 242 transitions, 2098 flow [2024-06-28 03:35:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:35:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:35:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-28 03:35:52,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31017369727047145 [2024-06-28 03:35:52,694 INFO L175 Difference]: Start difference. First operand has 368 places, 219 transitions, 1556 flow. Second operand 13 states and 125 transitions. [2024-06-28 03:35:52,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 242 transitions, 2098 flow [2024-06-28 03:35:53,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 242 transitions, 2037 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:35:53,677 INFO L231 Difference]: Finished difference. Result has 361 places, 207 transitions, 1410 flow [2024-06-28 03:35:53,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1410, PETRI_PLACES=361, PETRI_TRANSITIONS=207} [2024-06-28 03:35:53,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-28 03:35:53,677 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 207 transitions, 1410 flow [2024-06-28 03:35:53,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:53,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:53,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:53,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 03:35:53,678 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:53,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash 735602748, now seen corresponding path program 10 times [2024-06-28 03:35:53,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049035726] [2024-06-28 03:35:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049035726] [2024-06-28 03:35:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049035726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260025459] [2024-06-28 03:35:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:54,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:54,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 207 transitions, 1410 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:54,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:54,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:54,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:55,152 INFO L124 PetriNetUnfolderBase]: 662/1338 cut-off events. [2024-06-28 03:35:55,153 INFO L125 PetriNetUnfolderBase]: For 359993/359993 co-relation queries the response was YES. [2024-06-28 03:35:55,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8780 conditions, 1338 events. 662/1338 cut-off events. For 359993/359993 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7982 event pairs, 192 based on Foata normal form. 6/1344 useless extension candidates. Maximal degree in co-relation 8623. Up to 1183 conditions per place. [2024-06-28 03:35:55,167 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 12 changer transitions 28/228 dead transitions. [2024-06-28 03:35:55,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 228 transitions, 1918 flow [2024-06-28 03:35:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:35:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:35:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 03:35:55,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-28 03:35:55,168 INFO L175 Difference]: Start difference. First operand has 361 places, 207 transitions, 1410 flow. Second operand 12 states and 119 transitions. [2024-06-28 03:35:55,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 228 transitions, 1918 flow [2024-06-28 03:35:56,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 228 transitions, 1871 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:35:56,269 INFO L231 Difference]: Finished difference. Result has 344 places, 191 transitions, 1272 flow [2024-06-28 03:35:56,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1272, PETRI_PLACES=344, PETRI_TRANSITIONS=191} [2024-06-28 03:35:56,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 03:35:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 191 transitions, 1272 flow [2024-06-28 03:35:56,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:56,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:56,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:56,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 03:35:56,271 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:56,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash 701710634, now seen corresponding path program 11 times [2024-06-28 03:35:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641400414] [2024-06-28 03:35:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:57,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641400414] [2024-06-28 03:35:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641400414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:57,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:57,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:35:57,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89388161] [2024-06-28 03:35:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:57,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:35:57,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:57,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:35:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:35:57,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:57,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 191 transitions, 1272 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:57,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:57,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:57,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:57,642 INFO L124 PetriNetUnfolderBase]: 614/1242 cut-off events. [2024-06-28 03:35:57,642 INFO L125 PetriNetUnfolderBase]: For 332973/332973 co-relation queries the response was YES. [2024-06-28 03:35:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 1242 events. 614/1242 cut-off events. For 332973/332973 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7292 event pairs, 186 based on Foata normal form. 6/1248 useless extension candidates. Maximal degree in co-relation 8078. Up to 1149 conditions per place. [2024-06-28 03:35:57,655 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 8 changer transitions 26/212 dead transitions. [2024-06-28 03:35:57,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 212 transitions, 1744 flow [2024-06-28 03:35:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:35:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:35:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 03:35:57,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:35:57,656 INFO L175 Difference]: Start difference. First operand has 344 places, 191 transitions, 1272 flow. Second operand 12 states and 116 transitions. [2024-06-28 03:35:57,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 212 transitions, 1744 flow [2024-06-28 03:35:58,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 212 transitions, 1662 flow, removed 11 selfloop flow, removed 14 redundant places. [2024-06-28 03:35:58,766 INFO L231 Difference]: Finished difference. Result has 324 places, 182 transitions, 1146 flow [2024-06-28 03:35:58,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1146, PETRI_PLACES=324, PETRI_TRANSITIONS=182} [2024-06-28 03:35:58,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 03:35:58,767 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 182 transitions, 1146 flow [2024-06-28 03:35:58,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:58,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:58,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 03:35:58,767 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:35:58,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2064667192, now seen corresponding path program 12 times [2024-06-28 03:35:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:58,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504879619] [2024-06-28 03:35:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:58,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:59,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504879619] [2024-06-28 03:35:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504879619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:59,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:35:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915381296] [2024-06-28 03:35:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:59,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:35:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:35:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:35:59,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:35:59,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 182 transitions, 1146 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:59,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:59,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:35:59,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:59,974 INFO L124 PetriNetUnfolderBase]: 592/1192 cut-off events. [2024-06-28 03:35:59,974 INFO L125 PetriNetUnfolderBase]: For 332855/332855 co-relation queries the response was YES. [2024-06-28 03:35:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7975 conditions, 1192 events. 592/1192 cut-off events. For 332855/332855 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6932 event pairs, 178 based on Foata normal form. 6/1198 useless extension candidates. Maximal degree in co-relation 7828. Up to 1103 conditions per place. [2024-06-28 03:35:59,986 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 7 changer transitions 21/200 dead transitions. [2024-06-28 03:35:59,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 200 transitions, 1584 flow [2024-06-28 03:35:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:35:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:35:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:35:59,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-28 03:35:59,987 INFO L175 Difference]: Start difference. First operand has 324 places, 182 transitions, 1146 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:35:59,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 200 transitions, 1584 flow [2024-06-28 03:36:00,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 200 transitions, 1527 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 03:36:00,987 INFO L231 Difference]: Finished difference. Result has 308 places, 176 transitions, 1078 flow [2024-06-28 03:36:00,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1078, PETRI_PLACES=308, PETRI_TRANSITIONS=176} [2024-06-28 03:36:00,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 03:36:00,987 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 176 transitions, 1078 flow [2024-06-28 03:36:00,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:00,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:00,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 03:36:00,987 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:00,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1859236438, now seen corresponding path program 13 times [2024-06-28 03:36:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:00,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438289340] [2024-06-28 03:36:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:01,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:01,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438289340] [2024-06-28 03:36:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438289340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:01,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:01,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:36:01,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942357148] [2024-06-28 03:36:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:36:01,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:01,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:36:01,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:36:01,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:01,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 176 transitions, 1078 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:01,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:01,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:01,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:02,216 INFO L124 PetriNetUnfolderBase]: 568/1146 cut-off events. [2024-06-28 03:36:02,216 INFO L125 PetriNetUnfolderBase]: For 333052/333052 co-relation queries the response was YES. [2024-06-28 03:36:02,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7793 conditions, 1146 events. 568/1146 cut-off events. For 333052/333052 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6623 event pairs, 150 based on Foata normal form. 6/1152 useless extension candidates. Maximal degree in co-relation 7651. Up to 807 conditions per place. [2024-06-28 03:36:02,228 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 34 changer transitions 21/193 dead transitions. [2024-06-28 03:36:02,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 193 transitions, 1502 flow [2024-06-28 03:36:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:36:02,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:36:02,229 INFO L175 Difference]: Start difference. First operand has 308 places, 176 transitions, 1078 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:36:02,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 193 transitions, 1502 flow [2024-06-28 03:36:03,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 193 transitions, 1476 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:36:03,039 INFO L231 Difference]: Finished difference. Result has 298 places, 163 transitions, 1061 flow [2024-06-28 03:36:03,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1061, PETRI_PLACES=298, PETRI_TRANSITIONS=163} [2024-06-28 03:36:03,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 03:36:03,039 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 163 transitions, 1061 flow [2024-06-28 03:36:03,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:03,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:03,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:03,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 03:36:03,040 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:03,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2122566352, now seen corresponding path program 14 times [2024-06-28 03:36:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:03,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295968869] [2024-06-28 03:36:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:03,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295968869] [2024-06-28 03:36:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295968869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:04,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613276393] [2024-06-28 03:36:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:04,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:04,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:04,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:04,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 163 transitions, 1061 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:04,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:04,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:04,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:04,675 INFO L124 PetriNetUnfolderBase]: 524/1066 cut-off events. [2024-06-28 03:36:04,675 INFO L125 PetriNetUnfolderBase]: For 306962/306962 co-relation queries the response was YES. [2024-06-28 03:36:04,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7468 conditions, 1066 events. 524/1066 cut-off events. For 306962/306962 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6050 event pairs, 160 based on Foata normal form. 6/1072 useless extension candidates. Maximal degree in co-relation 7331. Up to 969 conditions per place. [2024-06-28 03:36:04,685 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 16 changer transitions 13/182 dead transitions. [2024-06-28 03:36:04,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 182 transitions, 1473 flow [2024-06-28 03:36:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 03:36:04,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-28 03:36:04,686 INFO L175 Difference]: Start difference. First operand has 298 places, 163 transitions, 1061 flow. Second operand 12 states and 112 transitions. [2024-06-28 03:36:04,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 182 transitions, 1473 flow [2024-06-28 03:36:05,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 182 transitions, 1385 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-28 03:36:05,411 INFO L231 Difference]: Finished difference. Result has 281 places, 158 transitions, 972 flow [2024-06-28 03:36:05,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=972, PETRI_PLACES=281, PETRI_TRANSITIONS=158} [2024-06-28 03:36:05,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:36:05,411 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 158 transitions, 972 flow [2024-06-28 03:36:05,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:05,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:05,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 03:36:05,412 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:05,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2035600804, now seen corresponding path program 15 times [2024-06-28 03:36:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:05,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052288985] [2024-06-28 03:36:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:06,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052288985] [2024-06-28 03:36:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052288985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:06,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:06,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790794683] [2024-06-28 03:36:06,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:06,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:06,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:06,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:06,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:06,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:06,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 158 transitions, 972 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:06,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:06,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:06,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:06,770 INFO L124 PetriNetUnfolderBase]: 511/1043 cut-off events. [2024-06-28 03:36:06,770 INFO L125 PetriNetUnfolderBase]: For 263010/263010 co-relation queries the response was YES. [2024-06-28 03:36:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6998 conditions, 1043 events. 511/1043 cut-off events. For 263010/263010 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5899 event pairs, 140 based on Foata normal form. 6/1049 useless extension candidates. Maximal degree in co-relation 6870. Up to 787 conditions per place. [2024-06-28 03:36:06,780 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 23 changer transitions 23/175 dead transitions. [2024-06-28 03:36:06,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 175 transitions, 1362 flow [2024-06-28 03:36:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 03:36:06,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 03:36:06,781 INFO L175 Difference]: Start difference. First operand has 281 places, 158 transitions, 972 flow. Second operand 11 states and 108 transitions. [2024-06-28 03:36:06,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 175 transitions, 1362 flow [2024-06-28 03:36:07,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 175 transitions, 1324 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:36:07,497 INFO L231 Difference]: Finished difference. Result has 275 places, 141 transitions, 892 flow [2024-06-28 03:36:07,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=892, PETRI_PLACES=275, PETRI_TRANSITIONS=141} [2024-06-28 03:36:07,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 03:36:07,497 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 141 transitions, 892 flow [2024-06-28 03:36:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:07,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:07,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:07,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 03:36:07,498 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:07,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2056936794, now seen corresponding path program 16 times [2024-06-28 03:36:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833345713] [2024-06-28 03:36:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:07,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:08,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:08,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833345713] [2024-06-28 03:36:08,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833345713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:08,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:08,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964614313] [2024-06-28 03:36:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:08,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:08,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:08,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 141 transitions, 892 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:08,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:08,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:08,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:08,758 INFO L124 PetriNetUnfolderBase]: 459/947 cut-off events. [2024-06-28 03:36:08,758 INFO L125 PetriNetUnfolderBase]: For 253576/253576 co-relation queries the response was YES. [2024-06-28 03:36:08,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6663 conditions, 947 events. 459/947 cut-off events. For 253576/253576 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5220 event pairs, 131 based on Foata normal form. 6/953 useless extension candidates. Maximal degree in co-relation 6537. Up to 717 conditions per place. [2024-06-28 03:36:08,766 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 13 changer transitions 25/158 dead transitions. [2024-06-28 03:36:08,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 158 transitions, 1244 flow [2024-06-28 03:36:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:36:08,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 03:36:08,767 INFO L175 Difference]: Start difference. First operand has 275 places, 141 transitions, 892 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:36:08,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 158 transitions, 1244 flow [2024-06-28 03:36:09,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 158 transitions, 1176 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-06-28 03:36:09,408 INFO L231 Difference]: Finished difference. Result has 253 places, 126 transitions, 772 flow [2024-06-28 03:36:09,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=772, PETRI_PLACES=253, PETRI_TRANSITIONS=126} [2024-06-28 03:36:09,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 03:36:09,409 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 126 transitions, 772 flow [2024-06-28 03:36:09,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:09,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:09,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 03:36:09,409 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:09,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 815142192, now seen corresponding path program 17 times [2024-06-28 03:36:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:09,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676910053] [2024-06-28 03:36:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:10,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:10,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676910053] [2024-06-28 03:36:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676910053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:10,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:10,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:10,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661254111] [2024-06-28 03:36:10,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:10,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:10,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:10,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 126 transitions, 772 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:10,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:10,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:10,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:11,112 INFO L124 PetriNetUnfolderBase]: 414/858 cut-off events. [2024-06-28 03:36:11,112 INFO L125 PetriNetUnfolderBase]: For 209479/209479 co-relation queries the response was YES. [2024-06-28 03:36:11,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6012 conditions, 858 events. 414/858 cut-off events. For 209479/209479 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4629 event pairs, 134 based on Foata normal form. 6/864 useless extension candidates. Maximal degree in co-relation 5896. Up to 731 conditions per place. [2024-06-28 03:36:11,119 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 11 changer transitions 18/144 dead transitions. [2024-06-28 03:36:11,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 144 transitions, 1104 flow [2024-06-28 03:36:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 03:36:11,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 03:36:11,120 INFO L175 Difference]: Start difference. First operand has 253 places, 126 transitions, 772 flow. Second operand 12 states and 113 transitions. [2024-06-28 03:36:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 144 transitions, 1104 flow [2024-06-28 03:36:11,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 144 transitions, 1044 flow, removed 16 selfloop flow, removed 19 redundant places. [2024-06-28 03:36:11,525 INFO L231 Difference]: Finished difference. Result has 230 places, 120 transitions, 717 flow [2024-06-28 03:36:11,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=717, PETRI_PLACES=230, PETRI_TRANSITIONS=120} [2024-06-28 03:36:11,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:36:11,526 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 120 transitions, 717 flow [2024-06-28 03:36:11,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:11,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:11,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 03:36:11,526 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:11,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1919391718, now seen corresponding path program 18 times [2024-06-28 03:36:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847208376] [2024-06-28 03:36:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847208376] [2024-06-28 03:36:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847208376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717500721] [2024-06-28 03:36:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:12,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:12,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:12,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 120 transitions, 717 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:12,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:12,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:12,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:12,998 INFO L124 PetriNetUnfolderBase]: 394/818 cut-off events. [2024-06-28 03:36:12,998 INFO L125 PetriNetUnfolderBase]: For 169607/169607 co-relation queries the response was YES. [2024-06-28 03:36:13,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5460 conditions, 818 events. 394/818 cut-off events. For 169607/169607 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4365 event pairs, 130 based on Foata normal form. 6/824 useless extension candidates. Maximal degree in co-relation 5355. Up to 721 conditions per place. [2024-06-28 03:36:13,002 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 10 changer transitions 15/137 dead transitions. [2024-06-28 03:36:13,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 137 transitions, 1025 flow [2024-06-28 03:36:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-28 03:36:13,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-28 03:36:13,003 INFO L175 Difference]: Start difference. First operand has 230 places, 120 transitions, 717 flow. Second operand 12 states and 110 transitions. [2024-06-28 03:36:13,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 137 transitions, 1025 flow [2024-06-28 03:36:13,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 137 transitions, 991 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:13,275 INFO L231 Difference]: Finished difference. Result has 220 places, 115 transitions, 682 flow [2024-06-28 03:36:13,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=682, PETRI_PLACES=220, PETRI_TRANSITIONS=115} [2024-06-28 03:36:13,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 03:36:13,275 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 115 transitions, 682 flow [2024-06-28 03:36:13,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:13,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:13,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:13,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 03:36:13,275 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:13,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash -264286234, now seen corresponding path program 19 times [2024-06-28 03:36:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584548385] [2024-06-28 03:36:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584548385] [2024-06-28 03:36:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584548385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:14,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:14,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078452171] [2024-06-28 03:36:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:14,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:14,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 115 transitions, 682 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:14,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:14,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:14,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:14,723 INFO L124 PetriNetUnfolderBase]: 378/786 cut-off events. [2024-06-28 03:36:14,723 INFO L125 PetriNetUnfolderBase]: For 151257/151257 co-relation queries the response was YES. [2024-06-28 03:36:14,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 786 events. 378/786 cut-off events. For 151257/151257 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4161 event pairs, 128 based on Foata normal form. 6/792 useless extension candidates. Maximal degree in co-relation 5087. Up to 711 conditions per place. [2024-06-28 03:36:14,729 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 9 changer transitions 12/132 dead transitions. [2024-06-28 03:36:14,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 132 transitions, 980 flow [2024-06-28 03:36:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2024-06-28 03:36:14,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 03:36:14,729 INFO L175 Difference]: Start difference. First operand has 220 places, 115 transitions, 682 flow. Second operand 12 states and 108 transitions. [2024-06-28 03:36:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 132 transitions, 980 flow [2024-06-28 03:36:14,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 132 transitions, 950 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:14,939 INFO L231 Difference]: Finished difference. Result has 212 places, 111 transitions, 653 flow [2024-06-28 03:36:14,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=653, PETRI_PLACES=212, PETRI_TRANSITIONS=111} [2024-06-28 03:36:14,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 03:36:14,939 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 111 transitions, 653 flow [2024-06-28 03:36:14,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:14,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:14,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:14,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 03:36:14,939 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:14,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -492187384, now seen corresponding path program 20 times [2024-06-28 03:36:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330452872] [2024-06-28 03:36:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330452872] [2024-06-28 03:36:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330452872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:15,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:15,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511566445] [2024-06-28 03:36:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:16,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:16,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 111 transitions, 653 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:16,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:16,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:16,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:16,358 INFO L124 PetriNetUnfolderBase]: 354/734 cut-off events. [2024-06-28 03:36:16,358 INFO L125 PetriNetUnfolderBase]: For 117731/117731 co-relation queries the response was YES. [2024-06-28 03:36:16,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4427 conditions, 734 events. 354/734 cut-off events. For 117731/117731 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3800 event pairs, 115 based on Foata normal form. 6/740 useless extension candidates. Maximal degree in co-relation 4331. Up to 668 conditions per place. [2024-06-28 03:36:16,364 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 3 changer transitions 22/126 dead transitions. [2024-06-28 03:36:16,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 126 transitions, 935 flow [2024-06-28 03:36:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 03:36:16,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 03:36:16,365 INFO L175 Difference]: Start difference. First operand has 212 places, 111 transitions, 653 flow. Second operand 11 states and 99 transitions. [2024-06-28 03:36:16,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 126 transitions, 935 flow [2024-06-28 03:36:16,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 126 transitions, 909 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:16,560 INFO L231 Difference]: Finished difference. Result has 205 places, 103 transitions, 598 flow [2024-06-28 03:36:16,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=598, PETRI_PLACES=205, PETRI_TRANSITIONS=103} [2024-06-28 03:36:16,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 03:36:16,561 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 103 transitions, 598 flow [2024-06-28 03:36:16,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:16,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:16,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:16,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 03:36:16,561 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:16,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash -47126282, now seen corresponding path program 21 times [2024-06-28 03:36:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:16,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669580492] [2024-06-28 03:36:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:17,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669580492] [2024-06-28 03:36:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669580492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:17,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086568897] [2024-06-28 03:36:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:17,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:17,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:17,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:17,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 103 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:17,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:17,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:17,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:17,988 INFO L124 PetriNetUnfolderBase]: 337/696 cut-off events. [2024-06-28 03:36:17,988 INFO L125 PetriNetUnfolderBase]: For 109136/109136 co-relation queries the response was YES. [2024-06-28 03:36:17,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 696 events. 337/696 cut-off events. For 109136/109136 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3584 event pairs, 99 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4121. Up to 476 conditions per place. [2024-06-28 03:36:17,994 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 34 changer transitions 12/121 dead transitions. [2024-06-28 03:36:17,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 121 transitions, 874 flow [2024-06-28 03:36:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 03:36:17,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-28 03:36:17,995 INFO L175 Difference]: Start difference. First operand has 205 places, 103 transitions, 598 flow. Second operand 12 states and 115 transitions. [2024-06-28 03:36:17,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 121 transitions, 874 flow [2024-06-28 03:36:18,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 121 transitions, 850 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:18,129 INFO L231 Difference]: Finished difference. Result has 190 places, 99 transitions, 625 flow [2024-06-28 03:36:18,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=625, PETRI_PLACES=190, PETRI_TRANSITIONS=99} [2024-06-28 03:36:18,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 03:36:18,129 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 99 transitions, 625 flow [2024-06-28 03:36:18,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:18,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:18,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:18,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 03:36:18,130 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -275027432, now seen corresponding path program 22 times [2024-06-28 03:36:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807835269] [2024-06-28 03:36:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807835269] [2024-06-28 03:36:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807835269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923996651] [2024-06-28 03:36:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:19,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:19,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:19,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 99 transitions, 625 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:19,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:19,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:19,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:19,484 INFO L124 PetriNetUnfolderBase]: 313/644 cut-off events. [2024-06-28 03:36:19,484 INFO L125 PetriNetUnfolderBase]: For 75432/75432 co-relation queries the response was YES. [2024-06-28 03:36:19,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 644 events. 313/644 cut-off events. For 75432/75432 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3240 event pairs, 86 based on Foata normal form. 6/650 useless extension candidates. Maximal degree in co-relation 3430. Up to 433 conditions per place. [2024-06-28 03:36:19,489 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 32 changer transitions 11/115 dead transitions. [2024-06-28 03:36:19,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 115 transitions, 885 flow [2024-06-28 03:36:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:36:19,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 03:36:19,490 INFO L175 Difference]: Start difference. First operand has 190 places, 99 transitions, 625 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:36:19,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 115 transitions, 885 flow [2024-06-28 03:36:19,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 115 transitions, 809 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:19,606 INFO L231 Difference]: Finished difference. Result has 183 places, 96 transitions, 601 flow [2024-06-28 03:36:19,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=601, PETRI_PLACES=183, PETRI_TRANSITIONS=96} [2024-06-28 03:36:19,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-28 03:36:19,607 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 96 transitions, 601 flow [2024-06-28 03:36:19,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:19,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:19,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:19,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 03:36:19,608 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:19,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1698003160, now seen corresponding path program 23 times [2024-06-28 03:36:19,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622117942] [2024-06-28 03:36:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622117942] [2024-06-28 03:36:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622117942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:20,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029725379] [2024-06-28 03:36:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:20,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:20,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:20,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 96 transitions, 601 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:20,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:20,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:20,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:20,957 INFO L124 PetriNetUnfolderBase]: 303/626 cut-off events. [2024-06-28 03:36:20,957 INFO L125 PetriNetUnfolderBase]: For 69252/69252 co-relation queries the response was YES. [2024-06-28 03:36:20,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 626 events. 303/626 cut-off events. For 69252/69252 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3119 event pairs, 82 based on Foata normal form. 6/632 useless extension candidates. Maximal degree in co-relation 3302. Up to 409 conditions per place. [2024-06-28 03:36:20,961 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 32 changer transitions 11/113 dead transitions. [2024-06-28 03:36:20,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 113 transitions, 859 flow [2024-06-28 03:36:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 03:36:20,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-28 03:36:20,962 INFO L175 Difference]: Start difference. First operand has 183 places, 96 transitions, 601 flow. Second operand 12 states and 112 transitions. [2024-06-28 03:36:20,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 113 transitions, 859 flow [2024-06-28 03:36:21,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 113 transitions, 789 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:36:21,072 INFO L231 Difference]: Finished difference. Result has 179 places, 91 transitions, 574 flow [2024-06-28 03:36:21,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=574, PETRI_PLACES=179, PETRI_TRANSITIONS=91} [2024-06-28 03:36:21,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:36:21,073 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 91 transitions, 574 flow [2024-06-28 03:36:21,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:21,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:21,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 03:36:21,073 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:21,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash -944058156, now seen corresponding path program 24 times [2024-06-28 03:36:21,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682090979] [2024-06-28 03:36:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682090979] [2024-06-28 03:36:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682090979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:22,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:22,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:22,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272514335] [2024-06-28 03:36:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:22,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:22,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:22,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:22,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 91 transitions, 574 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:22,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:22,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:22,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:22,584 INFO L124 PetriNetUnfolderBase]: 275/566 cut-off events. [2024-06-28 03:36:22,585 INFO L125 PetriNetUnfolderBase]: For 52162/52162 co-relation queries the response was YES. [2024-06-28 03:36:22,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 566 events. 275/566 cut-off events. For 52162/52162 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2733 event pairs, 85 based on Foata normal form. 6/572 useless extension candidates. Maximal degree in co-relation 2716. Up to 507 conditions per place. [2024-06-28 03:36:22,588 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 6 changer transitions 17/105 dead transitions. [2024-06-28 03:36:22,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 105 transitions, 810 flow [2024-06-28 03:36:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-28 03:36:22,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2768817204301075 [2024-06-28 03:36:22,589 INFO L175 Difference]: Start difference. First operand has 179 places, 91 transitions, 574 flow. Second operand 12 states and 103 transitions. [2024-06-28 03:36:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 105 transitions, 810 flow [2024-06-28 03:36:22,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 105 transitions, 736 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 03:36:22,676 INFO L231 Difference]: Finished difference. Result has 171 places, 85 transitions, 487 flow [2024-06-28 03:36:22,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=487, PETRI_PLACES=171, PETRI_TRANSITIONS=85} [2024-06-28 03:36:22,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 03:36:22,676 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 85 transitions, 487 flow [2024-06-28 03:36:22,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:22,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:22,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:22,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 03:36:22,676 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:22,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:22,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1476677844, now seen corresponding path program 25 times [2024-06-28 03:36:22,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:22,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882099191] [2024-06-28 03:36:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:22,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:23,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882099191] [2024-06-28 03:36:23,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882099191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:23,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:23,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:23,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322064113] [2024-06-28 03:36:23,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:23,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:23,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:23,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:23,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:23,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:23,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 85 transitions, 487 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:23,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:23,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:23,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:23,904 INFO L124 PetriNetUnfolderBase]: 264/541 cut-off events. [2024-06-28 03:36:23,904 INFO L125 PetriNetUnfolderBase]: For 45950/45950 co-relation queries the response was YES. [2024-06-28 03:36:23,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 541 events. 264/541 cut-off events. For 45950/45950 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2562 event pairs, 75 based on Foata normal form. 6/547 useless extension candidates. Maximal degree in co-relation 2512. Up to 362 conditions per place. [2024-06-28 03:36:23,907 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 26 changer transitions 11/102 dead transitions. [2024-06-28 03:36:23,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 102 transitions, 723 flow [2024-06-28 03:36:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 03:36:23,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 03:36:23,908 INFO L175 Difference]: Start difference. First operand has 171 places, 85 transitions, 487 flow. Second operand 12 states and 114 transitions. [2024-06-28 03:36:23,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 102 transitions, 723 flow [2024-06-28 03:36:23,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 102 transitions, 701 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:36:23,972 INFO L231 Difference]: Finished difference. Result has 160 places, 82 transitions, 505 flow [2024-06-28 03:36:23,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=505, PETRI_PLACES=160, PETRI_TRANSITIONS=82} [2024-06-28 03:36:23,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:36:23,972 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 82 transitions, 505 flow [2024-06-28 03:36:23,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:23,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:23,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 03:36:23,973 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:23,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 26 times [2024-06-28 03:36:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052837898] [2024-06-28 03:36:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:25,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:25,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052837898] [2024-06-28 03:36:25,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052837898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:25,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:25,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567344868] [2024-06-28 03:36:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:25,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:25,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:25,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:25,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 82 transitions, 505 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:25,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:25,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:25,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:25,385 INFO L124 PetriNetUnfolderBase]: 254/523 cut-off events. [2024-06-28 03:36:25,385 INFO L125 PetriNetUnfolderBase]: For 40272/40272 co-relation queries the response was YES. [2024-06-28 03:36:25,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 523 events. 254/523 cut-off events. For 40272/40272 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2455 event pairs, 73 based on Foata normal form. 6/529 useless extension candidates. Maximal degree in co-relation 2434. Up to 352 conditions per place. [2024-06-28 03:36:25,388 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 62 selfloop transitions, 24 changer transitions 12/100 dead transitions. [2024-06-28 03:36:25,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 100 transitions, 739 flow [2024-06-28 03:36:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 03:36:25,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-28 03:36:25,389 INFO L175 Difference]: Start difference. First operand has 160 places, 82 transitions, 505 flow. Second operand 12 states and 115 transitions. [2024-06-28 03:36:25,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 100 transitions, 739 flow [2024-06-28 03:36:25,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 100 transitions, 681 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:36:25,447 INFO L231 Difference]: Finished difference. Result has 156 places, 78 transitions, 478 flow [2024-06-28 03:36:25,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=478, PETRI_PLACES=156, PETRI_TRANSITIONS=78} [2024-06-28 03:36:25,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-28 03:36:25,448 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 78 transitions, 478 flow [2024-06-28 03:36:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:25,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:25,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:25,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 03:36:25,448 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:25,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash -934901258, now seen corresponding path program 27 times [2024-06-28 03:36:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713101626] [2024-06-28 03:36:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:26,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713101626] [2024-06-28 03:36:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713101626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:26,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053308299] [2024-06-28 03:36:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:26,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:26,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:26,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:26,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:26,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:26,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 78 transitions, 478 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:26,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:26,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:26,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:26,770 INFO L124 PetriNetUnfolderBase]: 230/471 cut-off events. [2024-06-28 03:36:26,770 INFO L125 PetriNetUnfolderBase]: For 28186/28186 co-relation queries the response was YES. [2024-06-28 03:36:26,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 471 events. 230/471 cut-off events. For 28186/28186 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2137 event pairs, 60 based on Foata normal form. 6/477 useless extension candidates. Maximal degree in co-relation 1934. Up to 309 conditions per place. [2024-06-28 03:36:26,773 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 22 changer transitions 11/94 dead transitions. [2024-06-28 03:36:26,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 94 transitions, 696 flow [2024-06-28 03:36:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:26,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:36:26,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 03:36:26,773 INFO L175 Difference]: Start difference. First operand has 156 places, 78 transitions, 478 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:36:26,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 94 transitions, 696 flow [2024-06-28 03:36:26,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 94 transitions, 640 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:26,808 INFO L231 Difference]: Finished difference. Result has 149 places, 75 transitions, 454 flow [2024-06-28 03:36:26,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=454, PETRI_PLACES=149, PETRI_TRANSITIONS=75} [2024-06-28 03:36:26,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-28 03:36:26,808 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 75 transitions, 454 flow [2024-06-28 03:36:26,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:26,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:26,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:26,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 03:36:26,809 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:26,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1476504864, now seen corresponding path program 28 times [2024-06-28 03:36:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:26,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907132554] [2024-06-28 03:36:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907132554] [2024-06-28 03:36:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907132554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:27,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893752056] [2024-06-28 03:36:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:27,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:27,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 75 transitions, 454 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:27,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:27,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:27,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:28,140 INFO L124 PetriNetUnfolderBase]: 220/453 cut-off events. [2024-06-28 03:36:28,140 INFO L125 PetriNetUnfolderBase]: For 25242/25242 co-relation queries the response was YES. [2024-06-28 03:36:28,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 453 events. 220/453 cut-off events. For 25242/25242 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2020 event pairs, 58 based on Foata normal form. 6/459 useless extension candidates. Maximal degree in co-relation 1842. Up to 291 conditions per place. [2024-06-28 03:36:28,143 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 55 selfloop transitions, 21 changer transitions 14/92 dead transitions. [2024-06-28 03:36:28,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 92 transitions, 670 flow [2024-06-28 03:36:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 03:36:28,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-28 03:36:28,143 INFO L175 Difference]: Start difference. First operand has 149 places, 75 transitions, 454 flow. Second operand 12 states and 111 transitions. [2024-06-28 03:36:28,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 92 transitions, 670 flow [2024-06-28 03:36:28,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 92 transitions, 620 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:36:28,172 INFO L231 Difference]: Finished difference. Result has 145 places, 71 transitions, 431 flow [2024-06-28 03:36:28,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=431, PETRI_PLACES=145, PETRI_TRANSITIONS=71} [2024-06-28 03:36:28,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-28 03:36:28,173 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 71 transitions, 431 flow [2024-06-28 03:36:28,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:28,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:28,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:28,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 03:36:28,173 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:28,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1472036214, now seen corresponding path program 29 times [2024-06-28 03:36:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297033715] [2024-06-28 03:36:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297033715] [2024-06-28 03:36:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297033715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:29,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811990048] [2024-06-28 03:36:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:29,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:29,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 71 transitions, 431 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:29,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:29,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:29,428 INFO L124 PetriNetUnfolderBase]: 206/427 cut-off events. [2024-06-28 03:36:29,429 INFO L125 PetriNetUnfolderBase]: For 23419/23419 co-relation queries the response was YES. [2024-06-28 03:36:29,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 427 events. 206/427 cut-off events. For 23419/23419 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1873 event pairs, 52 based on Foata normal form. 6/433 useless extension candidates. Maximal degree in co-relation 1746. Up to 251 conditions per place. [2024-06-28 03:36:29,430 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 19 changer transitions 13/87 dead transitions. [2024-06-28 03:36:29,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 87 transitions, 635 flow [2024-06-28 03:36:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:36:29,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 03:36:29,431 INFO L175 Difference]: Start difference. First operand has 145 places, 71 transitions, 431 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:36:29,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 87 transitions, 635 flow [2024-06-28 03:36:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 87 transitions, 585 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:36:29,461 INFO L231 Difference]: Finished difference. Result has 138 places, 66 transitions, 399 flow [2024-06-28 03:36:29,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=399, PETRI_PLACES=138, PETRI_TRANSITIONS=66} [2024-06-28 03:36:29,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 03:36:29,462 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 66 transitions, 399 flow [2024-06-28 03:36:29,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:29,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:29,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 03:36:29,462 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:29,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash -935074238, now seen corresponding path program 30 times [2024-06-28 03:36:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:29,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183235202] [2024-06-28 03:36:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:29,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:30,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:30,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183235202] [2024-06-28 03:36:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183235202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:30,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967041948] [2024-06-28 03:36:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:30,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:30,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:30,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 66 transitions, 399 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:30,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:30,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:30,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:30,729 INFO L124 PetriNetUnfolderBase]: 190/395 cut-off events. [2024-06-28 03:36:30,730 INFO L125 PetriNetUnfolderBase]: For 20692/20692 co-relation queries the response was YES. [2024-06-28 03:36:30,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 395 events. 190/395 cut-off events. For 20692/20692 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1665 event pairs, 52 based on Foata normal form. 6/401 useless extension candidates. Maximal degree in co-relation 1624. Up to 247 conditions per place. [2024-06-28 03:36:30,731 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 15 changer transitions 18/81 dead transitions. [2024-06-28 03:36:30,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 81 transitions, 589 flow [2024-06-28 03:36:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 03:36:30,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-28 03:36:30,732 INFO L175 Difference]: Start difference. First operand has 138 places, 66 transitions, 399 flow. Second operand 11 states and 102 transitions. [2024-06-28 03:36:30,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 81 transitions, 589 flow [2024-06-28 03:36:30,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 81 transitions, 541 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:30,757 INFO L231 Difference]: Finished difference. Result has 130 places, 59 transitions, 352 flow [2024-06-28 03:36:30,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=352, PETRI_PLACES=130, PETRI_TRANSITIONS=59} [2024-06-28 03:36:30,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 03:36:30,758 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 59 transitions, 352 flow [2024-06-28 03:36:30,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:30,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:30,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:30,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-28 03:36:30,758 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:30,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1855477224, now seen corresponding path program 31 times [2024-06-28 03:36:30,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:30,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106953464] [2024-06-28 03:36:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:30,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106953464] [2024-06-28 03:36:31,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106953464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:31,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:31,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:31,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335414924] [2024-06-28 03:36:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:31,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:31,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 59 transitions, 352 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:31,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:31,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:31,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:32,111 INFO L124 PetriNetUnfolderBase]: 160/329 cut-off events. [2024-06-28 03:36:32,112 INFO L125 PetriNetUnfolderBase]: For 11618/11618 co-relation queries the response was YES. [2024-06-28 03:36:32,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 329 events. 160/329 cut-off events. For 11618/11618 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1313 event pairs, 33 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1142. Up to 174 conditions per place. [2024-06-28 03:36:32,113 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 36 selfloop transitions, 15 changer transitions 21/74 dead transitions. [2024-06-28 03:36:32,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 74 transitions, 528 flow [2024-06-28 03:36:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-28 03:36:32,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-28 03:36:32,114 INFO L175 Difference]: Start difference. First operand has 130 places, 59 transitions, 352 flow. Second operand 11 states and 101 transitions. [2024-06-28 03:36:32,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 74 transitions, 528 flow [2024-06-28 03:36:32,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 74 transitions, 484 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:32,125 INFO L231 Difference]: Finished difference. Result has 118 places, 46 transitions, 279 flow [2024-06-28 03:36:32,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=118, PETRI_TRANSITIONS=46} [2024-06-28 03:36:32,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 03:36:32,126 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 46 transitions, 279 flow [2024-06-28 03:36:32,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:32,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:32,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-28 03:36:32,126 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:32,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash 903124570, now seen corresponding path program 32 times [2024-06-28 03:36:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522087227] [2024-06-28 03:36:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:32,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522087227] [2024-06-28 03:36:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522087227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:33,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:36:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025081752] [2024-06-28 03:36:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:33,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:36:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:36:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:36:33,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:33,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 46 transitions, 279 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:33,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:33,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:33,419 INFO L124 PetriNetUnfolderBase]: 121/256 cut-off events. [2024-06-28 03:36:33,419 INFO L125 PetriNetUnfolderBase]: For 8648/8648 co-relation queries the response was YES. [2024-06-28 03:36:33,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 256 events. 121/256 cut-off events. For 8648/8648 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 927 event pairs, 31 based on Foata normal form. 6/262 useless extension candidates. Maximal degree in co-relation 906. Up to 156 conditions per place. [2024-06-28 03:36:33,420 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 33 selfloop transitions, 13 changer transitions 15/63 dead transitions. [2024-06-28 03:36:33,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 63 transitions, 437 flow [2024-06-28 03:36:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-28 03:36:33,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28763440860215056 [2024-06-28 03:36:33,421 INFO L175 Difference]: Start difference. First operand has 118 places, 46 transitions, 279 flow. Second operand 12 states and 107 transitions. [2024-06-28 03:36:33,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 63 transitions, 437 flow [2024-06-28 03:36:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 63 transitions, 387 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-28 03:36:33,427 INFO L231 Difference]: Finished difference. Result has 100 places, 41 transitions, 235 flow [2024-06-28 03:36:33,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=100, PETRI_TRANSITIONS=41} [2024-06-28 03:36:33,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 03:36:33,428 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 41 transitions, 235 flow [2024-06-28 03:36:33,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:33,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:33,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:33,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-28 03:36:33,428 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:33,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 555928898, now seen corresponding path program 33 times [2024-06-28 03:36:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582348932] [2024-06-28 03:36:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:33,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582348932] [2024-06-28 03:36:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582348932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:34,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402186318] [2024-06-28 03:36:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:34,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:34,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 41 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:34,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:34,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:34,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:34,584 INFO L124 PetriNetUnfolderBase]: 108/229 cut-off events. [2024-06-28 03:36:34,584 INFO L125 PetriNetUnfolderBase]: For 5040/5040 co-relation queries the response was YES. [2024-06-28 03:36:34,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 229 events. 108/229 cut-off events. For 5040/5040 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 771 event pairs, 29 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 776. Up to 138 conditions per place. [2024-06-28 03:36:34,585 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 31 selfloop transitions, 11 changer transitions 14/58 dead transitions. [2024-06-28 03:36:34,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 58 transitions, 383 flow [2024-06-28 03:36:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:34,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-28 03:36:34,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28763440860215056 [2024-06-28 03:36:34,585 INFO L175 Difference]: Start difference. First operand has 100 places, 41 transitions, 235 flow. Second operand 12 states and 107 transitions. [2024-06-28 03:36:34,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 58 transitions, 383 flow [2024-06-28 03:36:34,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 58 transitions, 347 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:36:34,590 INFO L231 Difference]: Finished difference. Result has 92 places, 37 transitions, 206 flow [2024-06-28 03:36:34,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=206, PETRI_PLACES=92, PETRI_TRANSITIONS=37} [2024-06-28 03:36:34,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 03:36:34,590 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 37 transitions, 206 flow [2024-06-28 03:36:34,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:34,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:34,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:34,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-28 03:36:34,590 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:34,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash -363621240, now seen corresponding path program 34 times [2024-06-28 03:36:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997631453] [2024-06-28 03:36:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:34,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:35,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:35,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997631453] [2024-06-28 03:36:35,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997631453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:35,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:35,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:35,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610215377] [2024-06-28 03:36:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:35,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:35,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:35,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 37 transitions, 206 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:35,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:35,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:35,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:35,831 INFO L124 PetriNetUnfolderBase]: 94/203 cut-off events. [2024-06-28 03:36:35,831 INFO L125 PetriNetUnfolderBase]: For 3771/3771 co-relation queries the response was YES. [2024-06-28 03:36:35,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 203 events. 94/203 cut-off events. For 3771/3771 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 650 event pairs, 19 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 676. Up to 72 conditions per place. [2024-06-28 03:36:35,832 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 24 selfloop transitions, 8 changer transitions 18/52 dead transitions. [2024-06-28 03:36:35,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 52 transitions, 338 flow [2024-06-28 03:36:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:36:35,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 03:36:35,833 INFO L175 Difference]: Start difference. First operand has 92 places, 37 transitions, 206 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:36:35,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 52 transitions, 338 flow [2024-06-28 03:36:35,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 52 transitions, 308 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:36:35,836 INFO L231 Difference]: Finished difference. Result has 85 places, 27 transitions, 151 flow [2024-06-28 03:36:35,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=151, PETRI_PLACES=85, PETRI_TRANSITIONS=27} [2024-06-28 03:36:35,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-28 03:36:35,837 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 27 transitions, 151 flow [2024-06-28 03:36:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:35,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:35,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:35,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-28 03:36:35,837 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:35,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:35,837 INFO L85 PathProgramCache]: Analyzing trace with hash -280349084, now seen corresponding path program 35 times [2024-06-28 03:36:35,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:35,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138427474] [2024-06-28 03:36:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:36,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:36,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138427474] [2024-06-28 03:36:36,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138427474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:36,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:36,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55047552] [2024-06-28 03:36:36,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:36,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:36,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:36,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:36,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:36,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:36,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 27 transitions, 151 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:36,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:36,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:36,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:37,058 INFO L124 PetriNetUnfolderBase]: 63/142 cut-off events. [2024-06-28 03:36:37,058 INFO L125 PetriNetUnfolderBase]: For 2892/2892 co-relation queries the response was YES. [2024-06-28 03:36:37,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 142 events. 63/142 cut-off events. For 2892/2892 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 369 event pairs, 19 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 494. Up to 68 conditions per place. [2024-06-28 03:36:37,059 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 6 changer transitions 17/43 dead transitions. [2024-06-28 03:36:37,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 43 transitions, 267 flow [2024-06-28 03:36:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:36:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:36:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 102 transitions. [2024-06-28 03:36:37,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27419354838709675 [2024-06-28 03:36:37,060 INFO L175 Difference]: Start difference. First operand has 85 places, 27 transitions, 151 flow. Second operand 12 states and 102 transitions. [2024-06-28 03:36:37,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 43 transitions, 267 flow [2024-06-28 03:36:37,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 43 transitions, 233 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-28 03:36:37,061 INFO L231 Difference]: Finished difference. Result has 70 places, 22 transitions, 110 flow [2024-06-28 03:36:37,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=110, PETRI_PLACES=70, PETRI_TRANSITIONS=22} [2024-06-28 03:36:37,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-28 03:36:37,062 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 22 transitions, 110 flow [2024-06-28 03:36:37,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:37,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:37,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:37,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-28 03:36:37,063 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:36:37,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -395640254, now seen corresponding path program 36 times [2024-06-28 03:36:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:37,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167319427] [2024-06-28 03:36:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:37,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:38,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167319427] [2024-06-28 03:36:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167319427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:38,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:38,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:36:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732527397] [2024-06-28 03:36:38,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:38,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:36:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:36:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:36:38,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:36:38,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 22 transitions, 110 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:38,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:38,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:36:38,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:38,278 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-28 03:36:38,279 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2024-06-28 03:36:38,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 75 events. 30/75 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 194. Up to 24 conditions per place. [2024-06-28 03:36:38,279 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-28 03:36:38,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 32 transitions, 162 flow [2024-06-28 03:36:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:36:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:36:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 86 transitions. [2024-06-28 03:36:38,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25219941348973607 [2024-06-28 03:36:38,280 INFO L175 Difference]: Start difference. First operand has 70 places, 22 transitions, 110 flow. Second operand 11 states and 86 transitions. [2024-06-28 03:36:38,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 32 transitions, 162 flow [2024-06-28 03:36:38,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-28 03:36:38,280 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-28 03:36:38,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-28 03:36:38,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 03:36:38,280 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-28 03:36:38,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:38,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:36:38,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:36:38,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:36:38,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:36:38,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-28 03:36:38,284 INFO L445 BasicCegarLoop]: Path program histogram: [55, 36, 35, 21, 20, 14, 10, 10, 8, 8, 7, 6, 6, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:38,286 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:36:38,287 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:36:38,290 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:36:38,290 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:36:38,291 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:36:38 BasicIcfg [2024-06-28 03:36:38,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:36:38,291 INFO L158 Benchmark]: Toolchain (without parser) took 486900.34ms. Allocated memory was 174.1MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 97.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 684.4MB. Max. memory is 16.1GB. [2024-06-28 03:36:38,292 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 111.1MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:36:38,292 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 174.1MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:36:38,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.92ms. Allocated memory is still 174.1MB. Free memory was 97.6MB in the beginning and 134.6MB in the end (delta: -37.0MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2024-06-28 03:36:38,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.87ms. Allocated memory is still 174.1MB. Free memory was 134.6MB in the beginning and 131.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:36:38,293 INFO L158 Benchmark]: Boogie Preprocessor took 46.23ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 128.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:36:38,293 INFO L158 Benchmark]: RCFGBuilder took 768.58ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 76.7MB in the end (delta: 51.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-06-28 03:36:38,293 INFO L158 Benchmark]: TraceAbstraction took 485302.59ms. Allocated memory was 174.1MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 76.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 661.0MB. Max. memory is 16.1GB. [2024-06-28 03:36:38,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 111.1MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 174.1MB. Free memory is still 103.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.92ms. Allocated memory is still 174.1MB. Free memory was 97.6MB in the beginning and 134.6MB in the end (delta: -37.0MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.87ms. Allocated memory is still 174.1MB. Free memory was 134.6MB in the beginning and 131.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.23ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 128.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 768.58ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 76.7MB in the end (delta: 51.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 485302.59ms. Allocated memory was 174.1MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 76.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 661.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 485.2s, OverallIterations: 270, TraceHistogramMax: 1, PathProgramHistogramMax: 55, EmptinessCheckTime: 0.0s, AutomataDifference: 275.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17321 SdHoareTripleChecker+Valid, 59.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14707 mSDsluCounter, 14969 SdHoareTripleChecker+Invalid, 50.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13651 mSDsCounter, 4200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96152 IncrementalHoareTripleChecker+Invalid, 100352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4200 mSolverCounterUnsat, 1318 mSDtfsCounter, 96152 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2982 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7169 ImplicationChecksByTransitivity, 87.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4266occurred in iteration=114, InterpolantAutomatonStates: 2755, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 206.3s InterpolantComputationTime, 4437 NumberOfCodeBlocks, 4437 NumberOfCodeBlocksAsserted, 270 NumberOfCheckSat, 4167 ConstructedInterpolants, 0 QuantifiedInterpolants, 193815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 270 InterpolantComputations, 270 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:36:38,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE