./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.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-bcb38a6-m [2024-06-03 19:35:32,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:35:32,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:35:32,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:35:32,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:35:32,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:35:32,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:35:32,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:35:32,246 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:35:32,250 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:35:32,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:35:32,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:35:32,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:35:32,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:35:32,261 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:35:32,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:35:32,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:35:32,262 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:35:32,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:35:32,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:35:32,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:35:32,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:35:32,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:35:32,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:35:32,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:35:32,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:35:32,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:35:32,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:35:32,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:35:32,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:35:32,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:35:32,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:35:32,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:35:32,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:35:32,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:35:32,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:35:32,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:35:32,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:35:32,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:35:32,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:35:32,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:35:32,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:35:32,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:35:32,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:35:32,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:35:32,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:35:32,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:35:32,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:35:32,567 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:35:32,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-03 19:35:33,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:35:34,235 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:35:34,239 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-03 19:35:34,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2f79550/5a94b46ee316443baecb5d5ff09f3d4e/FLAG795a08113 [2024-06-03 19:35:34,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2f79550/5a94b46ee316443baecb5d5ff09f3d4e [2024-06-03 19:35:34,279 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:35:34,280 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:35:34,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-03 19:35:34,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:35:34,409 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:35:34,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:35:34,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:35:34,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:35:34,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:35:34" (1/2) ... [2024-06-03 19:35:34,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c97008c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:35:34, skipping insertion in model container [2024-06-03 19:35:34,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:35:34" (1/2) ... [2024-06-03 19:35:34,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7043f25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:35:34, skipping insertion in model container [2024-06-03 19:35:34,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:35:34" (2/2) ... [2024-06-03 19:35:34,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c97008c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:34, skipping insertion in model container [2024-06-03 19:35:34,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:35:34" (2/2) ... [2024-06-03 19:35:34,423 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:35:34,496 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:35:34,498 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-03 19:35:34,499 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-03 19:35:34,499 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:35:34,499 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-03 19:35:34,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:35:35,037 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:35:35,052 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:35:35,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:35:35,175 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:35:35,178 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35 WrapperNode [2024-06-03 19:35:35,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:35:35,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:35:35,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:35:35,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:35:35,186 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 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,213 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 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,247 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 115 [2024-06-03 19:35:35,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:35:35,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:35:35,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:35:35,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:35:35,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,294 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]. [2024-06-03 19:35:35,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:35:35,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:35:35,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:35:35,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:35:35,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (1/1) ... [2024-06-03 19:35:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:35:35,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:35:35,367 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) [2024-06-03 19:35:35,370 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 [2024-06-03 19:35:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:35:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:35:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:35:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:35:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:35:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:35:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:35:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:35:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:35:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:35:35,408 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:35:35,539 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:35:35,541 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:35:35,847 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:35:35,848 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:35:36,060 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:35:36,061 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:35:36,064 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:35:36 BoogieIcfgContainer [2024-06-03 19:35:36,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:35:36,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:35:36,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:35:36,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:35:36,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:35:34" (1/4) ... [2024-06-03 19:35:36,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ed0956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:35:36, skipping insertion in model container [2024-06-03 19:35:36,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:35:34" (2/4) ... [2024-06-03 19:35:36,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ed0956 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:35:36, skipping insertion in model container [2024-06-03 19:35:36,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:35" (3/4) ... [2024-06-03 19:35:36,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ed0956 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:35:36, skipping insertion in model container [2024-06-03 19:35:36,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:35:36" (4/4) ... [2024-06-03 19:35:36,083 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-03 19:35:36,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:35:36,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:35:36,104 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:35:36,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:35:36,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:35:36,253 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-03 19:35:36,257 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:35:36,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:35:36,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:35:36,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-03 19:35:36,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:35:36,294 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;@581bd8a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:35:36,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:35:36,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:35:36,299 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:35:36,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:35:36,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:36,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:35:36,301 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)] === [2024-06-03 19:35:36,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1723506688, now seen corresponding path program 1 times [2024-06-03 19:35:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:36,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014318333] [2024-06-03 19:35:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:37,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014318333] [2024-06-03 19:35:37,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014318333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:35:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464446442] [2024-06-03 19:35:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:37,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:35:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:37,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:35:37,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:35:37,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 19:35:37,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:37,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:37,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 19:35:37,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:37,450 INFO L124 PetriNetUnfolderBase]: 153/294 cut-off events. [2024-06-03 19:35:37,451 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 19:35:37,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 294 events. 153/294 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1087 event pairs, 89 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 575. Up to 272 conditions per place. [2024-06-03 19:35:37,457 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 19:35:37,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-03 19:35:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:35:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:35:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-03 19:35:37,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-03 19:35:37,469 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-03 19:35:37,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-03 19:35:37,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:35:37,473 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-03 19:35:37,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-03 19:35:37,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 19:35:37,479 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-03 19:35:37,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:37,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:37,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:35:37,480 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)] === [2024-06-03 19:35:37,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1566654583, now seen corresponding path program 1 times [2024-06-03 19:35:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:37,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478872568] [2024-06-03 19:35:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:37,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478872568] [2024-06-03 19:35:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478872568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:35:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134006666] [2024-06-03 19:35:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:37,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:35:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:35:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:35:38,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 19:35:38,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:38,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:38,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 19:35:38,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:38,133 INFO L124 PetriNetUnfolderBase]: 150/294 cut-off events. [2024-06-03 19:35:38,133 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-03 19:35:38,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 294 events. 150/294 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1077 event pairs, 68 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 649. Up to 258 conditions per place. [2024-06-03 19:35:38,138 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 19:35:38,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-03 19:35:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:35:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:35:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-03 19:35:38,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-03 19:35:38,142 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-03 19:35:38,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-03 19:35:38,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:35:38,146 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-03 19:35:38,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-03 19:35:38,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-03 19:35:38,148 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-03 19:35:38,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:38,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:38,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:38,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:35:38,149 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)] === [2024-06-03 19:35:38,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1230432702, now seen corresponding path program 1 times [2024-06-03 19:35:38,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:38,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741235427] [2024-06-03 19:35:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:38,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741235427] [2024-06-03 19:35:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741235427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:38,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:35:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55162694] [2024-06-03 19:35:38,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:35:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:35:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:35:39,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:35:39,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-06-03 19:35:39,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:39,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:35:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:39,192 INFO L124 PetriNetUnfolderBase]: 180/341 cut-off events. [2024-06-03 19:35:39,192 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-06-03 19:35:39,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 341 events. 180/341 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1239 event pairs, 52 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 838. Up to 291 conditions per place. [2024-06-03 19:35:39,195 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-03 19:35:39,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 244 flow [2024-06-03 19:35:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-03 19:35:39,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-03 19:35:39,199 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 6 states and 95 transitions. [2024-06-03 19:35:39,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 244 flow [2024-06-03 19:35:39,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 232 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 19:35:39,202 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 136 flow [2024-06-03 19:35:39,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-03 19:35:39,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-03 19:35:39,203 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 136 flow [2024-06-03 19:35:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-06-03 19:35:39,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:39,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:39,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:35:39,204 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)] === [2024-06-03 19:35:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -511291276, now seen corresponding path program 1 times [2024-06-03 19:35:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900593986] [2024-06-03 19:35:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:40,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900593986] [2024-06-03 19:35:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900593986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:40,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:40,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312691921] [2024-06-03 19:35:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:40,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:40,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:35:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:40,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:35:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:40,276 INFO L124 PetriNetUnfolderBase]: 176/331 cut-off events. [2024-06-03 19:35:40,277 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-06-03 19:35:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 331 events. 176/331 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1163 event pairs, 30 based on Foata normal form. 4/327 useless extension candidates. Maximal degree in co-relation 911. Up to 265 conditions per place. [2024-06-03 19:35:40,279 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-03 19:35:40,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 264 flow [2024-06-03 19:35:40,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-03 19:35:40,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-03 19:35:40,280 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 136 flow. Second operand 7 states and 104 transitions. [2024-06-03 19:35:40,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 264 flow [2024-06-03 19:35:40,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 247 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:40,283 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 135 flow [2024-06-03 19:35:40,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-06-03 19:35:40,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-03 19:35:40,284 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 135 flow [2024-06-03 19:35:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:40,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:40,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:35:40,284 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)] === [2024-06-03 19:35:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash -640432288, now seen corresponding path program 1 times [2024-06-03 19:35:40,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:40,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183734914] [2024-06-03 19:35:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:40,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:40,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183734914] [2024-06-03 19:35:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183734914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:40,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:35:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945755308] [2024-06-03 19:35:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:35:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:35:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:35:40,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:40,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-03 19:35:40,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:40,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:40,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:40,967 INFO L124 PetriNetUnfolderBase]: 174/328 cut-off events. [2024-06-03 19:35:40,967 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-03 19:35:40,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 328 events. 174/328 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1151 event pairs, 47 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 950. Up to 304 conditions per place. [2024-06-03 19:35:40,969 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-03 19:35:40,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 223 flow [2024-06-03 19:35:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:35:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:35:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-03 19:35:40,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:35:40,970 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 135 flow. Second operand 5 states and 65 transitions. [2024-06-03 19:35:40,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 223 flow [2024-06-03 19:35:40,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 199 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:40,973 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 138 flow [2024-06-03 19:35:40,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-06-03 19:35:40,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-03 19:35:40,974 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 138 flow [2024-06-03 19:35:40,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-03 19:35:40,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:40,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:35:40,975 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)] === [2024-06-03 19:35:40,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1621436392, now seen corresponding path program 1 times [2024-06-03 19:35:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682225295] [2024-06-03 19:35:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:41,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:41,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682225295] [2024-06-03 19:35:41,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682225295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:41,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:41,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:41,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982983318] [2024-06-03 19:35:41,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:41,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:41,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:41,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:41,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:41,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:41,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:41,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:42,100 INFO L124 PetriNetUnfolderBase]: 199/358 cut-off events. [2024-06-03 19:35:42,100 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2024-06-03 19:35:42,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 358 events. 199/358 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1221 event pairs, 55 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1101. Up to 343 conditions per place. [2024-06-03 19:35:42,105 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-03 19:35:42,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 238 flow [2024-06-03 19:35:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-03 19:35:42,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:35:42,106 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 138 flow. Second operand 6 states and 70 transitions. [2024-06-03 19:35:42,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 238 flow [2024-06-03 19:35:42,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 227 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:42,112 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-03 19:35:42,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-03 19:35:42,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-03 19:35:42,116 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-03 19:35:42,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:42,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:42,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:42,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:35:42,116 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)] === [2024-06-03 19:35:42,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -444124955, now seen corresponding path program 1 times [2024-06-03 19:35:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507599108] [2024-06-03 19:35:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:42,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:42,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507599108] [2024-06-03 19:35:42,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507599108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:42,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480538150] [2024-06-03 19:35:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:42,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:42,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:42,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:42,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:42,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:42,974 INFO L124 PetriNetUnfolderBase]: 188/349 cut-off events. [2024-06-03 19:35:42,975 INFO L125 PetriNetUnfolderBase]: For 991/991 co-relation queries the response was YES. [2024-06-03 19:35:42,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 349 events. 188/349 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1223 event pairs, 53 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 1142. Up to 304 conditions per place. [2024-06-03 19:35:42,977 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-03 19:35:42,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 302 flow [2024-06-03 19:35:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-03 19:35:42,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-03 19:35:42,978 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 81 transitions. [2024-06-03 19:35:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 302 flow [2024-06-03 19:35:42,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 285 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:35:42,981 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 190 flow [2024-06-03 19:35:42,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-03 19:35:42,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-03 19:35:42,981 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 190 flow [2024-06-03 19:35:42,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:42,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:42,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:35:42,982 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)] === [2024-06-03 19:35:42,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash -416211935, now seen corresponding path program 2 times [2024-06-03 19:35:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:42,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019538827] [2024-06-03 19:35:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:43,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:43,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019538827] [2024-06-03 19:35:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019538827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:43,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:43,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988184924] [2024-06-03 19:35:43,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:43,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:43,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:43,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:43,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:43,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:43,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:43,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:43,744 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-03 19:35:43,744 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2024-06-03 19:35:43,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 346 events. 186/346 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1207 event pairs, 52 based on Foata normal form. 1/345 useless extension candidates. Maximal degree in co-relation 1206. Up to 314 conditions per place. [2024-06-03 19:35:43,747 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-03 19:35:43,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-03 19:35:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-03 19:35:43,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:35:43,749 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 190 flow. Second operand 6 states and 75 transitions. [2024-06-03 19:35:43,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-03 19:35:43,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 272 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-03 19:35:43,751 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 197 flow [2024-06-03 19:35:43,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-06-03 19:35:43,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-03 19:35:43,754 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 197 flow [2024-06-03 19:35:43,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:43,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:43,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:35:43,754 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)] === [2024-06-03 19:35:43,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -443909629, now seen corresponding path program 1 times [2024-06-03 19:35:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807665934] [2024-06-03 19:35:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:44,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:44,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807665934] [2024-06-03 19:35:44,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807665934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:44,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:44,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:44,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944568276] [2024-06-03 19:35:44,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:44,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:44,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:44,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:44,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:44,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:44,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 197 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:44,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:44,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:44,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:44,786 INFO L124 PetriNetUnfolderBase]: 194/351 cut-off events. [2024-06-03 19:35:44,786 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-03 19:35:44,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 351 events. 194/351 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1181 event pairs, 51 based on Foata normal form. 3/352 useless extension candidates. Maximal degree in co-relation 1242. Up to 327 conditions per place. [2024-06-03 19:35:44,790 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-03 19:35:44,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 323 flow [2024-06-03 19:35:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-03 19:35:44,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-03 19:35:44,792 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 197 flow. Second operand 7 states and 81 transitions. [2024-06-03 19:35:44,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 323 flow [2024-06-03 19:35:44,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 299 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 19:35:44,796 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 212 flow [2024-06-03 19:35:44,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-03 19:35:44,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-03 19:35:44,797 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 212 flow [2024-06-03 19:35:44,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:44,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:44,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:44,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:35:44,798 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)] === [2024-06-03 19:35:44,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1050225587, now seen corresponding path program 1 times [2024-06-03 19:35:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665636976] [2024-06-03 19:35:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:45,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665636976] [2024-06-03 19:35:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665636976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:45,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208577651] [2024-06-03 19:35:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:45,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:45,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 212 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:45,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:45,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:45,929 INFO L124 PetriNetUnfolderBase]: 183/342 cut-off events. [2024-06-03 19:35:45,929 INFO L125 PetriNetUnfolderBase]: For 1715/1715 co-relation queries the response was YES. [2024-06-03 19:35:45,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 342 events. 183/342 cut-off events. For 1715/1715 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1187 event pairs, 48 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1266. Up to 295 conditions per place. [2024-06-03 19:35:45,933 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-03 19:35:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 358 flow [2024-06-03 19:35:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-03 19:35:45,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:35:45,935 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 212 flow. Second operand 7 states and 91 transitions. [2024-06-03 19:35:45,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 358 flow [2024-06-03 19:35:45,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 335 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:45,940 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 228 flow [2024-06-03 19:35:45,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-03 19:35:45,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-03 19:35:45,944 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 228 flow [2024-06-03 19:35:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:45,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:45,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:45,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:35:45,945 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)] === [2024-06-03 19:35:45,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash -882971063, now seen corresponding path program 2 times [2024-06-03 19:35:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:45,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384022968] [2024-06-03 19:35:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384022968] [2024-06-03 19:35:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384022968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:46,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:46,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759293240] [2024-06-03 19:35:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:46,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:46,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:46,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:46,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:46,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:46,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:46,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:46,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:46,959 INFO L124 PetriNetUnfolderBase]: 186/347 cut-off events. [2024-06-03 19:35:46,959 INFO L125 PetriNetUnfolderBase]: For 2040/2040 co-relation queries the response was YES. [2024-06-03 19:35:46,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 347 events. 186/347 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1208 event pairs, 49 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 1343. Up to 284 conditions per place. [2024-06-03 19:35:46,961 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2024-06-03 19:35:46,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 410 flow [2024-06-03 19:35:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-03 19:35:46,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-03 19:35:46,963 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 228 flow. Second operand 7 states and 93 transitions. [2024-06-03 19:35:46,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 410 flow [2024-06-03 19:35:46,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 387 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:46,966 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 276 flow [2024-06-03 19:35:46,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-03 19:35:46,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-03 19:35:46,967 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 276 flow [2024-06-03 19:35:46,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:46,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:46,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:46,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:35:46,968 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)] === [2024-06-03 19:35:46,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1050105431, now seen corresponding path program 1 times [2024-06-03 19:35:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:46,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532066618] [2024-06-03 19:35:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:46,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:47,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532066618] [2024-06-03 19:35:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532066618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306602510] [2024-06-03 19:35:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:47,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:47,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:47,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:47,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:47,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:47,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:48,098 INFO L124 PetriNetUnfolderBase]: 203/366 cut-off events. [2024-06-03 19:35:48,099 INFO L125 PetriNetUnfolderBase]: For 2479/2479 co-relation queries the response was YES. [2024-06-03 19:35:48,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 366 events. 203/366 cut-off events. For 2479/2479 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1243 event pairs, 51 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1486. Up to 327 conditions per place. [2024-06-03 19:35:48,101 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2024-06-03 19:35:48,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 460 flow [2024-06-03 19:35:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-03 19:35:48,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-03 19:35:48,103 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 276 flow. Second operand 7 states and 87 transitions. [2024-06-03 19:35:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 460 flow [2024-06-03 19:35:48,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 438 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:48,107 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 309 flow [2024-06-03 19:35:48,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-03 19:35:48,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-03 19:35:48,108 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 309 flow [2024-06-03 19:35:48,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:48,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:48,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:48,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:35:48,109 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)] === [2024-06-03 19:35:48,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:48,109 INFO L85 PathProgramCache]: Analyzing trace with hash -17667257, now seen corresponding path program 2 times [2024-06-03 19:35:48,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:48,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91123408] [2024-06-03 19:35:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:48,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91123408] [2024-06-03 19:35:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91123408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899782555] [2024-06-03 19:35:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:48,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:48,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:48,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:48,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:48,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:48,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:48,957 INFO L124 PetriNetUnfolderBase]: 206/371 cut-off events. [2024-06-03 19:35:48,957 INFO L125 PetriNetUnfolderBase]: For 2919/2919 co-relation queries the response was YES. [2024-06-03 19:35:48,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 371 events. 206/371 cut-off events. For 2919/2919 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1258 event pairs, 49 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1591. Up to 346 conditions per place. [2024-06-03 19:35:48,959 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-03 19:35:48,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 481 flow [2024-06-03 19:35:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-03 19:35:48,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-03 19:35:48,961 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 309 flow. Second operand 7 states and 82 transitions. [2024-06-03 19:35:48,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 481 flow [2024-06-03 19:35:48,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 467 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:48,966 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 338 flow [2024-06-03 19:35:48,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-03 19:35:48,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-03 19:35:48,967 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 338 flow [2024-06-03 19:35:48,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:48,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:48,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:48,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:35:48,968 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)] === [2024-06-03 19:35:48,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 706622419, now seen corresponding path program 3 times [2024-06-03 19:35:48,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:48,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365695181] [2024-06-03 19:35:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:48,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365695181] [2024-06-03 19:35:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365695181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:49,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417702075] [2024-06-03 19:35:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:49,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:49,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:49,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:49,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:49,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:49,818 INFO L124 PetriNetUnfolderBase]: 192/356 cut-off events. [2024-06-03 19:35:49,818 INFO L125 PetriNetUnfolderBase]: For 3371/3371 co-relation queries the response was YES. [2024-06-03 19:35:49,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 356 events. 192/356 cut-off events. For 3371/3371 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1231 event pairs, 47 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1573. Up to 317 conditions per place. [2024-06-03 19:35:49,821 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-03 19:35:49,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 460 flow [2024-06-03 19:35:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-03 19:35:49,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-03 19:35:49,822 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 338 flow. Second operand 7 states and 85 transitions. [2024-06-03 19:35:49,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 460 flow [2024-06-03 19:35:49,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 423 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:49,826 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 326 flow [2024-06-03 19:35:49,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-06-03 19:35:49,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-03 19:35:49,827 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 326 flow [2024-06-03 19:35:49,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:49,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:49,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:49,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:35:49,828 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)] === [2024-06-03 19:35:49,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash 706629115, now seen corresponding path program 3 times [2024-06-03 19:35:49,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:49,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548785846] [2024-06-03 19:35:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:49,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548785846] [2024-06-03 19:35:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548785846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:50,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758250146] [2024-06-03 19:35:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:50,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:50,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:50,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:50,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:50,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:50,597 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-03 19:35:50,598 INFO L125 PetriNetUnfolderBase]: For 3673/3673 co-relation queries the response was YES. [2024-06-03 19:35:50,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 365 events. 202/365 cut-off events. For 3673/3673 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1238 event pairs, 49 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 1620. Up to 347 conditions per place. [2024-06-03 19:35:50,600 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-03 19:35:50,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 458 flow [2024-06-03 19:35:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:35:50,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-03 19:35:50,601 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 326 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:35:50,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 458 flow [2024-06-03 19:35:50,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 427 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:35:50,604 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 320 flow [2024-06-03 19:35:50,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-03 19:35:50,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-03 19:35:50,605 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 320 flow [2024-06-03 19:35:50,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:50,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:50,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:50,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:35:50,606 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)] === [2024-06-03 19:35:50,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:50,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1802655646, now seen corresponding path program 1 times [2024-06-03 19:35:50,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:50,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059566847] [2024-06-03 19:35:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:50,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059566847] [2024-06-03 19:35:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059566847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:51,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:51,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876958309] [2024-06-03 19:35:51,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:51,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:51,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:51,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:51,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 320 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:35:51,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:51,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:51,799 INFO L124 PetriNetUnfolderBase]: 198/366 cut-off events. [2024-06-03 19:35:51,811 INFO L125 PetriNetUnfolderBase]: For 4358/4358 co-relation queries the response was YES. [2024-06-03 19:35:51,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 366 events. 198/366 cut-off events. For 4358/4358 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1277 event pairs, 46 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1661. Up to 300 conditions per place. [2024-06-03 19:35:51,816 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 53 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-03 19:35:51,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 562 flow [2024-06-03 19:35:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:35:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:35:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-03 19:35:51,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-03 19:35:51,818 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 320 flow. Second operand 9 states and 116 transitions. [2024-06-03 19:35:51,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 562 flow [2024-06-03 19:35:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 537 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 19:35:51,841 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 364 flow [2024-06-03 19:35:51,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-03 19:35:51,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-03 19:35:51,842 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 364 flow [2024-06-03 19:35:51,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:35:51,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:51,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:51,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:35:51,843 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)] === [2024-06-03 19:35:51,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash 282849749, now seen corresponding path program 1 times [2024-06-03 19:35:51,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:51,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750710487] [2024-06-03 19:35:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750710487] [2024-06-03 19:35:52,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750710487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:52,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:52,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:52,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006709148] [2024-06-03 19:35:52,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:52,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:52,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 364 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) [2024-06-03 19:35:52,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:52,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:52,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:53,008 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-03 19:35:53,008 INFO L125 PetriNetUnfolderBase]: For 4908/4908 co-relation queries the response was YES. [2024-06-03 19:35:53,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 383 events. 213/383 cut-off events. For 4908/4908 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1314 event pairs, 47 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1821. Up to 350 conditions per place. [2024-06-03 19:35:53,013 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-03 19:35:53,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 554 flow [2024-06-03 19:35:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:35:53,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:35:53,014 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 364 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:35:53,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 554 flow [2024-06-03 19:35:53,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 526 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:53,021 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 383 flow [2024-06-03 19:35:53,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=383, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-03 19:35:53,022 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-03 19:35:53,022 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 383 flow [2024-06-03 19:35:53,022 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) [2024-06-03 19:35:53,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:53,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:53,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:35:53,023 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)] === [2024-06-03 19:35:53,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1806320776, now seen corresponding path program 2 times [2024-06-03 19:35:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031177301] [2024-06-03 19:35:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:54,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:54,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031177301] [2024-06-03 19:35:54,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031177301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:54,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:54,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628076450] [2024-06-03 19:35:54,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:54,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:54,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:54,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:35:54,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:54,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:54,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:54,550 INFO L124 PetriNetUnfolderBase]: 201/370 cut-off events. [2024-06-03 19:35:54,550 INFO L125 PetriNetUnfolderBase]: For 5455/5455 co-relation queries the response was YES. [2024-06-03 19:35:54,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 370 events. 201/370 cut-off events. For 5455/5455 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1283 event pairs, 45 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1817. Up to 315 conditions per place. [2024-06-03 19:35:54,553 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 53 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-03 19:35:54,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 547 flow [2024-06-03 19:35:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-03 19:35:54,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-03 19:35:54,554 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 383 flow. Second operand 8 states and 101 transitions. [2024-06-03 19:35:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 547 flow [2024-06-03 19:35:54,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 512 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:35:54,563 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 377 flow [2024-06-03 19:35:54,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-06-03 19:35:54,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-03 19:35:54,563 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 377 flow [2024-06-03 19:35:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:35:54,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:54,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:54,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:35:54,564 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)] === [2024-06-03 19:35:54,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1806470661, now seen corresponding path program 2 times [2024-06-03 19:35:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352753592] [2024-06-03 19:35:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352753592] [2024-06-03 19:35:55,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352753592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:55,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403191719] [2024-06-03 19:35:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:55,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:55,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 377 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) [2024-06-03 19:35:55,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:55,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:55,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:55,643 INFO L124 PetriNetUnfolderBase]: 219/393 cut-off events. [2024-06-03 19:35:55,644 INFO L125 PetriNetUnfolderBase]: For 6180/6180 co-relation queries the response was YES. [2024-06-03 19:35:55,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2006 conditions, 393 events. 219/393 cut-off events. For 6180/6180 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1361 event pairs, 49 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1968. Up to 318 conditions per place. [2024-06-03 19:35:55,647 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 27 changer transitions 0/78 dead transitions. [2024-06-03 19:35:55,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 685 flow [2024-06-03 19:35:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-03 19:35:55,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:35:55,649 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 377 flow. Second operand 8 states and 100 transitions. [2024-06-03 19:35:55,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 685 flow [2024-06-03 19:35:55,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 656 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 19:35:55,658 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 465 flow [2024-06-03 19:35:55,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-06-03 19:35:55,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-03 19:35:55,659 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 465 flow [2024-06-03 19:35:55,659 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) [2024-06-03 19:35:55,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:55,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:55,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:35:55,660 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)] === [2024-06-03 19:35:55,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1830826996, now seen corresponding path program 1 times [2024-06-03 19:35:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744118700] [2024-06-03 19:35:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744118700] [2024-06-03 19:35:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744118700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135891425] [2024-06-03 19:35:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:56,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:56,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 465 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) [2024-06-03 19:35:56,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:56,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:56,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:56,889 INFO L124 PetriNetUnfolderBase]: 238/424 cut-off events. [2024-06-03 19:35:56,889 INFO L125 PetriNetUnfolderBase]: For 7728/7728 co-relation queries the response was YES. [2024-06-03 19:35:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 424 events. 238/424 cut-off events. For 7728/7728 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1501 event pairs, 52 based on Foata normal form. 3/425 useless extension candidates. Maximal degree in co-relation 2184. Up to 355 conditions per place. [2024-06-03 19:35:56,904 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2024-06-03 19:35:56,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 735 flow [2024-06-03 19:35:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-03 19:35:56,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 19:35:56,907 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 465 flow. Second operand 8 states and 102 transitions. [2024-06-03 19:35:56,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 735 flow [2024-06-03 19:35:56,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 705 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:56,934 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 520 flow [2024-06-03 19:35:56,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-03 19:35:56,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-03 19:35:56,934 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 520 flow [2024-06-03 19:35:56,935 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) [2024-06-03 19:35:56,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:56,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:56,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:35:56,935 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)] === [2024-06-03 19:35:56,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 286568819, now seen corresponding path program 3 times [2024-06-03 19:35:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:56,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92543983] [2024-06-03 19:35:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:56,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:58,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:58,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92543983] [2024-06-03 19:35:58,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92543983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:58,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:58,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383616690] [2024-06-03 19:35:58,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:58,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:58,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:35:58,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 520 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) [2024-06-03 19:35:58,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:58,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:35:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:58,322 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-03 19:35:58,322 INFO L125 PetriNetUnfolderBase]: For 7943/7943 co-relation queries the response was YES. [2024-06-03 19:35:58,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 421 events. 236/421 cut-off events. For 7943/7943 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1497 event pairs, 51 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2289. Up to 347 conditions per place. [2024-06-03 19:35:58,329 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 26 changer transitions 0/83 dead transitions. [2024-06-03 19:35:58,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 750 flow [2024-06-03 19:35:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-03 19:35:58,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:35:58,331 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 520 flow. Second operand 8 states and 100 transitions. [2024-06-03 19:35:58,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 750 flow [2024-06-03 19:35:58,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 730 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:58,344 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 557 flow [2024-06-03 19:35:58,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=557, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-06-03 19:35:58,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-03 19:35:58,345 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 557 flow [2024-06-03 19:35:58,345 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) [2024-06-03 19:35:58,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:58,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:58,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:35:58,346 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)] === [2024-06-03 19:35:58,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1806464926, now seen corresponding path program 3 times [2024-06-03 19:35:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:58,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250411062] [2024-06-03 19:35:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:59,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:59,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250411062] [2024-06-03 19:35:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250411062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569585978] [2024-06-03 19:35:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:59,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:59,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:35:59,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 557 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:35:59,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:59,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:35:59,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:59,658 INFO L124 PetriNetUnfolderBase]: 228/415 cut-off events. [2024-06-03 19:35:59,659 INFO L125 PetriNetUnfolderBase]: For 8917/8917 co-relation queries the response was YES. [2024-06-03 19:35:59,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 415 events. 228/415 cut-off events. For 8917/8917 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1511 event pairs, 48 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2333. Up to 341 conditions per place. [2024-06-03 19:35:59,662 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-03 19:35:59,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 747 flow [2024-06-03 19:35:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-03 19:35:59,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 19:35:59,663 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 557 flow. Second operand 8 states and 102 transitions. [2024-06-03 19:35:59,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 747 flow [2024-06-03 19:35:59,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 683 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:35:59,672 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 558 flow [2024-06-03 19:35:59,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-03 19:35:59,673 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-03 19:35:59,673 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 558 flow [2024-06-03 19:35:59,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:35:59,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:59,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:59,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:35:59,674 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)] === [2024-06-03 19:35:59,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash -547690048, now seen corresponding path program 4 times [2024-06-03 19:35:59,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:59,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174193839] [2024-06-03 19:35:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:59,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174193839] [2024-06-03 19:36:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174193839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365680969] [2024-06-03 19:36:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:36:00,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 558 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:36:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:36:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:00,935 INFO L124 PetriNetUnfolderBase]: 226/412 cut-off events. [2024-06-03 19:36:00,935 INFO L125 PetriNetUnfolderBase]: For 9452/9452 co-relation queries the response was YES. [2024-06-03 19:36:00,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 412 events. 226/412 cut-off events. For 9452/9452 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1496 event pairs, 47 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2338. Up to 365 conditions per place. [2024-06-03 19:36:00,939 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-03 19:36:00,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 742 flow [2024-06-03 19:36:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 19:36:00,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-03 19:36:00,940 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 558 flow. Second operand 8 states and 95 transitions. [2024-06-03 19:36:00,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 742 flow [2024-06-03 19:36:00,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 693 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:00,951 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 564 flow [2024-06-03 19:36:00,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-06-03 19:36:00,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 19:36:00,952 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 564 flow [2024-06-03 19:36:00,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-03 19:36:00,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:00,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:36:00,953 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)] === [2024-06-03 19:36:00,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash 430465146, now seen corresponding path program 2 times [2024-06-03 19:36:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484040495] [2024-06-03 19:36:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:01,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484040495] [2024-06-03 19:36:01,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484040495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:01,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:01,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:01,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419307877] [2024-06-03 19:36:01,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:01,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:01,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 564 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) [2024-06-03 19:36:01,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:01,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:01,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:01,978 INFO L124 PetriNetUnfolderBase]: 246/438 cut-off events. [2024-06-03 19:36:01,979 INFO L125 PetriNetUnfolderBase]: For 10701/10701 co-relation queries the response was YES. [2024-06-03 19:36:01,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 438 events. 246/438 cut-off events. For 10701/10701 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1571 event pairs, 49 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 2480. Up to 386 conditions per place. [2024-06-03 19:36:01,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-06-03 19:36:01,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 832 flow [2024-06-03 19:36:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:36:01,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:36:01,983 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 564 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:36:01,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 832 flow [2024-06-03 19:36:01,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 793 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:01,994 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 578 flow [2024-06-03 19:36:01,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-06-03 19:36:01,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-03 19:36:01,995 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 578 flow [2024-06-03 19:36:01,995 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) [2024-06-03 19:36:01,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:01,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:01,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:36:01,995 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)] === [2024-06-03 19:36:01,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1292392391, now seen corresponding path program 4 times [2024-06-03 19:36:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:01,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494781309] [2024-06-03 19:36:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:02,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:02,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494781309] [2024-06-03 19:36:02,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494781309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:02,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:02,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:02,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205102190] [2024-06-03 19:36:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:02,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:02,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:02,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 578 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) [2024-06-03 19:36:02,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:02,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:02,862 INFO L124 PetriNetUnfolderBase]: 249/443 cut-off events. [2024-06-03 19:36:02,863 INFO L125 PetriNetUnfolderBase]: For 11059/11059 co-relation queries the response was YES. [2024-06-03 19:36:02,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 443 events. 249/443 cut-off events. For 11059/11059 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1592 event pairs, 49 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2557. Up to 407 conditions per place. [2024-06-03 19:36:02,866 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-03 19:36:02,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 840 flow [2024-06-03 19:36:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 19:36:02,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:36:02,867 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 578 flow. Second operand 8 states and 92 transitions. [2024-06-03 19:36:02,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 840 flow [2024-06-03 19:36:02,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 797 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:02,877 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 598 flow [2024-06-03 19:36:02,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=598, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-03 19:36:02,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-03 19:36:02,878 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 598 flow [2024-06-03 19:36:02,878 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) [2024-06-03 19:36:02,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:02,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:02,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:36:02,878 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)] === [2024-06-03 19:36:02,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:02,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1292386811, now seen corresponding path program 5 times [2024-06-03 19:36:02,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:02,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787842066] [2024-06-03 19:36:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:03,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787842066] [2024-06-03 19:36:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787842066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:03,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:03,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:03,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606938165] [2024-06-03 19:36:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:03,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:03,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:03,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 598 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) [2024-06-03 19:36:03,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:03,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:03,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:03,814 INFO L124 PetriNetUnfolderBase]: 252/448 cut-off events. [2024-06-03 19:36:03,814 INFO L125 PetriNetUnfolderBase]: For 11859/11859 co-relation queries the response was YES. [2024-06-03 19:36:03,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 448 events. 252/448 cut-off events. For 11859/11859 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1611 event pairs, 49 based on Foata normal form. 1/447 useless extension candidates. Maximal degree in co-relation 2605. Up to 411 conditions per place. [2024-06-03 19:36:03,818 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-03 19:36:03,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 870 flow [2024-06-03 19:36:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-03 19:36:03,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-03 19:36:03,819 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 598 flow. Second operand 8 states and 93 transitions. [2024-06-03 19:36:03,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 870 flow [2024-06-03 19:36:03,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 809 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:03,830 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 606 flow [2024-06-03 19:36:03,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-03 19:36:03,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-03 19:36:03,831 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 606 flow [2024-06-03 19:36:03,831 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) [2024-06-03 19:36:03,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:03,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:03,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:36:03,832 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)] === [2024-06-03 19:36:03,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1285035161, now seen corresponding path program 6 times [2024-06-03 19:36:03,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:03,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470948531] [2024-06-03 19:36:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:03,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:04,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470948531] [2024-06-03 19:36:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470948531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:04,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:04,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732861977] [2024-06-03 19:36:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:04,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:04,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 606 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) [2024-06-03 19:36:04,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:04,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:04,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:04,740 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-03 19:36:04,740 INFO L125 PetriNetUnfolderBase]: For 12369/12369 co-relation queries the response was YES. [2024-06-03 19:36:04,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 445 events. 250/445 cut-off events. For 12369/12369 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1595 event pairs, 49 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 2580. Up to 424 conditions per place. [2024-06-03 19:36:04,743 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-03 19:36:04,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 798 flow [2024-06-03 19:36:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:36:04,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:36:04,745 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 606 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:36:04,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 89 transitions, 798 flow [2024-06-03 19:36:04,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 89 transitions, 749 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-03 19:36:04,755 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 586 flow [2024-06-03 19:36:04,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=586, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-03 19:36:04,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-03 19:36:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 586 flow [2024-06-03 19:36:04,756 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) [2024-06-03 19:36:04,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:04,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:36:04,757 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)] === [2024-06-03 19:36:04,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1395372190, now seen corresponding path program 3 times [2024-06-03 19:36:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759532155] [2024-06-03 19:36:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759532155] [2024-06-03 19:36:05,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759532155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:05,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:05,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352105525] [2024-06-03 19:36:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:05,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:05,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 586 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) [2024-06-03 19:36:05,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:05,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:05,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:05,734 INFO L124 PetriNetUnfolderBase]: 259/460 cut-off events. [2024-06-03 19:36:05,735 INFO L125 PetriNetUnfolderBase]: For 14021/14021 co-relation queries the response was YES. [2024-06-03 19:36:05,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 460 events. 259/460 cut-off events. For 14021/14021 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1685 event pairs, 49 based on Foata normal form. 3/461 useless extension candidates. Maximal degree in co-relation 2642. Up to 433 conditions per place. [2024-06-03 19:36:05,744 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-03 19:36:05,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 806 flow [2024-06-03 19:36:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 19:36:05,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:36:05,746 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 586 flow. Second operand 8 states and 90 transitions. [2024-06-03 19:36:05,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 93 transitions, 806 flow [2024-06-03 19:36:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 93 transitions, 766 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:05,759 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 593 flow [2024-06-03 19:36:05,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-06-03 19:36:05,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-03 19:36:05,764 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 593 flow [2024-06-03 19:36:05,764 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) [2024-06-03 19:36:05,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:05,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:05,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:36:05,765 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)] === [2024-06-03 19:36:05,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1285034944, now seen corresponding path program 4 times [2024-06-03 19:36:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:05,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713095641] [2024-06-03 19:36:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:06,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:06,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713095641] [2024-06-03 19:36:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713095641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:06,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:06,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424810738] [2024-06-03 19:36:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:06,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:06,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:06,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 593 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) [2024-06-03 19:36:06,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:06,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:06,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:06,990 INFO L124 PetriNetUnfolderBase]: 253/451 cut-off events. [2024-06-03 19:36:06,990 INFO L125 PetriNetUnfolderBase]: For 13850/13850 co-relation queries the response was YES. [2024-06-03 19:36:06,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 451 events. 253/451 cut-off events. For 13850/13850 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1645 event pairs, 47 based on Foata normal form. 3/452 useless extension candidates. Maximal degree in co-relation 2572. Up to 412 conditions per place. [2024-06-03 19:36:06,994 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2024-06-03 19:36:06,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 809 flow [2024-06-03 19:36:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:36:06,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:36:06,996 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 593 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:36:06,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 809 flow [2024-06-03 19:36:07,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 95 transitions, 778 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:07,014 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 597 flow [2024-06-03 19:36:07,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-06-03 19:36:07,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-03 19:36:07,016 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 597 flow [2024-06-03 19:36:07,016 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) [2024-06-03 19:36:07,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:07,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:07,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:36:07,017 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)] === [2024-06-03 19:36:07,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 289107948, now seen corresponding path program 1 times [2024-06-03 19:36:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988065400] [2024-06-03 19:36:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:08,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:08,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988065400] [2024-06-03 19:36:08,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988065400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:08,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:08,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529227830] [2024-06-03 19:36:08,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:08,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:08,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:08,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:36:08,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 597 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:08,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:08,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:36:08,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:08,616 INFO L124 PetriNetUnfolderBase]: 252/460 cut-off events. [2024-06-03 19:36:08,617 INFO L125 PetriNetUnfolderBase]: For 15559/15559 co-relation queries the response was YES. [2024-06-03 19:36:08,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2768 conditions, 460 events. 252/460 cut-off events. For 15559/15559 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1751 event pairs, 26 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2716. Up to 349 conditions per place. [2024-06-03 19:36:08,622 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-03 19:36:08,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 927 flow [2024-06-03 19:36:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 19:36:08,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 19:36:08,623 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 597 flow. Second operand 10 states and 126 transitions. [2024-06-03 19:36:08,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 927 flow [2024-06-03 19:36:08,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 882 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:08,645 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 626 flow [2024-06-03 19:36:08,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=626, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-06-03 19:36:08,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-03 19:36:08,646 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 626 flow [2024-06-03 19:36:08,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:08,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:08,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:08,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:36:08,647 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)] === [2024-06-03 19:36:08,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 47750894, now seen corresponding path program 2 times [2024-06-03 19:36:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:08,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939507511] [2024-06-03 19:36:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939507511] [2024-06-03 19:36:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939507511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775127590] [2024-06-03 19:36:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:09,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:36:09,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:09,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:09,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:36:09,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:10,266 INFO L124 PetriNetUnfolderBase]: 256/468 cut-off events. [2024-06-03 19:36:10,266 INFO L125 PetriNetUnfolderBase]: For 16640/16640 co-relation queries the response was YES. [2024-06-03 19:36:10,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 468 events. 256/468 cut-off events. For 16640/16640 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1808 event pairs, 44 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2798. Up to 388 conditions per place. [2024-06-03 19:36:10,271 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-03 19:36:10,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 878 flow [2024-06-03 19:36:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:36:10,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:36:10,274 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 626 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:36:10,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 878 flow [2024-06-03 19:36:10,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 831 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:10,296 INFO L231 Difference]: Finished difference. Result has 109 places, 86 transitions, 637 flow [2024-06-03 19:36:10,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=637, PETRI_PLACES=109, PETRI_TRANSITIONS=86} [2024-06-03 19:36:10,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-03 19:36:10,297 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 637 flow [2024-06-03 19:36:10,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:10,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:10,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:36:10,297 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)] === [2024-06-03 19:36:10,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash 47751018, now seen corresponding path program 1 times [2024-06-03 19:36:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:10,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074532434] [2024-06-03 19:36:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074532434] [2024-06-03 19:36:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074532434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:11,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488327541] [2024-06-03 19:36:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:11,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:11,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 86 transitions, 637 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:11,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:11,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:11,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:11,732 INFO L124 PetriNetUnfolderBase]: 276/493 cut-off events. [2024-06-03 19:36:11,733 INFO L125 PetriNetUnfolderBase]: For 17615/17615 co-relation queries the response was YES. [2024-06-03 19:36:11,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 493 events. 276/493 cut-off events. For 17615/17615 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1879 event pairs, 45 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2966. Up to 436 conditions per place. [2024-06-03 19:36:11,737 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-03 19:36:11,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 110 transitions, 1003 flow [2024-06-03 19:36:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:36:11,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 19:36:11,739 INFO L175 Difference]: Start difference. First operand has 109 places, 86 transitions, 637 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:36:11,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 110 transitions, 1003 flow [2024-06-03 19:36:11,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 963 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:11,767 INFO L231 Difference]: Finished difference. Result has 111 places, 90 transitions, 686 flow [2024-06-03 19:36:11,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=111, PETRI_TRANSITIONS=90} [2024-06-03 19:36:11,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-03 19:36:11,768 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 90 transitions, 686 flow [2024-06-03 19:36:11,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:11,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:11,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:11,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:36:11,768 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)] === [2024-06-03 19:36:11,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash 50552364, now seen corresponding path program 1 times [2024-06-03 19:36:11,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:11,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109162195] [2024-06-03 19:36:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109162195] [2024-06-03 19:36:12,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109162195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:12,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805398495] [2024-06-03 19:36:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:12,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:12,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 90 transitions, 686 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:12,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:12,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:12,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:13,042 INFO L124 PetriNetUnfolderBase]: 285/508 cut-off events. [2024-06-03 19:36:13,042 INFO L125 PetriNetUnfolderBase]: For 19848/19848 co-relation queries the response was YES. [2024-06-03 19:36:13,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145 conditions, 508 events. 285/508 cut-off events. For 19848/19848 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1963 event pairs, 44 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 3089. Up to 466 conditions per place. [2024-06-03 19:36:13,047 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-03 19:36:13,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 109 transitions, 960 flow [2024-06-03 19:36:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:36:13,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:36:13,049 INFO L175 Difference]: Start difference. First operand has 111 places, 90 transitions, 686 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:36:13,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 109 transitions, 960 flow [2024-06-03 19:36:13,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 922 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:13,074 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 703 flow [2024-06-03 19:36:13,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2024-06-03 19:36:13,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-03 19:36:13,076 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 703 flow [2024-06-03 19:36:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:13,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:13,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:36:13,077 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)] === [2024-06-03 19:36:13,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash 50552178, now seen corresponding path program 2 times [2024-06-03 19:36:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:13,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782147060] [2024-06-03 19:36:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:14,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782147060] [2024-06-03 19:36:14,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782147060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:14,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:14,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866449289] [2024-06-03 19:36:14,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:14,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:14,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:14,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 703 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:14,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:14,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:14,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:14,440 INFO L124 PetriNetUnfolderBase]: 288/513 cut-off events. [2024-06-03 19:36:14,440 INFO L125 PetriNetUnfolderBase]: For 19945/19945 co-relation queries the response was YES. [2024-06-03 19:36:14,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 513 events. 288/513 cut-off events. For 19945/19945 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1979 event pairs, 44 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 3188. Up to 477 conditions per place. [2024-06-03 19:36:14,446 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-03 19:36:14,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 109 transitions, 973 flow [2024-06-03 19:36:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 19:36:14,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 19:36:14,448 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 703 flow. Second operand 9 states and 103 transitions. [2024-06-03 19:36:14,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 109 transitions, 973 flow [2024-06-03 19:36:14,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 934 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:14,480 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 721 flow [2024-06-03 19:36:14,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=721, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-03 19:36:14,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-03 19:36:14,481 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 721 flow [2024-06-03 19:36:14,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:14,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:14,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:14,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:36:14,481 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)] === [2024-06-03 19:36:14,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:14,482 INFO L85 PathProgramCache]: Analyzing trace with hash 50547404, now seen corresponding path program 3 times [2024-06-03 19:36:14,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:14,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75212370] [2024-06-03 19:36:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75212370] [2024-06-03 19:36:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75212370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125058099] [2024-06-03 19:36:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:15,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:15,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:36:15,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 721 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:15,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:15,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:36:15,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:15,973 INFO L124 PetriNetUnfolderBase]: 274/497 cut-off events. [2024-06-03 19:36:15,974 INFO L125 PetriNetUnfolderBase]: For 20685/20685 co-relation queries the response was YES. [2024-06-03 19:36:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 497 events. 274/497 cut-off events. For 20685/20685 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1949 event pairs, 41 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 3048. Up to 422 conditions per place. [2024-06-03 19:36:15,978 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-06-03 19:36:15,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 110 transitions, 947 flow [2024-06-03 19:36:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:36:15,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:36:15,986 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 721 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:36:15,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 110 transitions, 947 flow [2024-06-03 19:36:16,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 110 transitions, 902 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:16,020 INFO L231 Difference]: Finished difference. Result has 118 places, 94 transitions, 706 flow [2024-06-03 19:36:16,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=118, PETRI_TRANSITIONS=94} [2024-06-03 19:36:16,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-03 19:36:16,021 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 94 transitions, 706 flow [2024-06-03 19:36:16,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:16,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:16,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:16,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:36:16,022 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)] === [2024-06-03 19:36:16,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash 50547528, now seen corresponding path program 3 times [2024-06-03 19:36:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:16,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904732189] [2024-06-03 19:36:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:17,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904732189] [2024-06-03 19:36:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904732189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:17,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:17,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:17,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504314105] [2024-06-03 19:36:17,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:17,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:17,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:17,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 94 transitions, 706 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:17,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:17,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:17,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:17,404 INFO L124 PetriNetUnfolderBase]: 283/505 cut-off events. [2024-06-03 19:36:17,405 INFO L125 PetriNetUnfolderBase]: For 20368/20368 co-relation queries the response was YES. [2024-06-03 19:36:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 505 events. 283/505 cut-off events. For 20368/20368 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1939 event pairs, 43 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 3065. Up to 463 conditions per place. [2024-06-03 19:36:17,408 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-03 19:36:17,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 110 transitions, 960 flow [2024-06-03 19:36:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 19:36:17,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 19:36:17,410 INFO L175 Difference]: Start difference. First operand has 118 places, 94 transitions, 706 flow. Second operand 10 states and 112 transitions. [2024-06-03 19:36:17,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 110 transitions, 960 flow [2024-06-03 19:36:17,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 110 transitions, 920 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:17,433 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 710 flow [2024-06-03 19:36:17,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=710, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2024-06-03 19:36:17,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-03 19:36:17,434 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 710 flow [2024-06-03 19:36:17,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:17,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:17,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:36:17,435 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)] === [2024-06-03 19:36:17,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 165838698, now seen corresponding path program 4 times [2024-06-03 19:36:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:17,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119959815] [2024-06-03 19:36:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:17,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:18,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119959815] [2024-06-03 19:36:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119959815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:18,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:18,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413190560] [2024-06-03 19:36:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:18,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:18,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:18,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 710 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:18,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:18,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:18,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:18,440 INFO L124 PetriNetUnfolderBase]: 291/518 cut-off events. [2024-06-03 19:36:18,441 INFO L125 PetriNetUnfolderBase]: For 22179/22179 co-relation queries the response was YES. [2024-06-03 19:36:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 518 events. 291/518 cut-off events. For 22179/22179 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2011 event pairs, 45 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3205. Up to 431 conditions per place. [2024-06-03 19:36:18,444 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 36 changer transitions 0/112 dead transitions. [2024-06-03 19:36:18,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 112 transitions, 1082 flow [2024-06-03 19:36:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:36:18,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 19:36:18,445 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 710 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:36:18,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 112 transitions, 1082 flow [2024-06-03 19:36:18,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 1034 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:18,469 INFO L231 Difference]: Finished difference. Result has 121 places, 98 transitions, 794 flow [2024-06-03 19:36:18,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=794, PETRI_PLACES=121, PETRI_TRANSITIONS=98} [2024-06-03 19:36:18,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-03 19:36:18,469 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 98 transitions, 794 flow [2024-06-03 19:36:18,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:18,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:18,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:18,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:36:18,470 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)] === [2024-06-03 19:36:18,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash 165838574, now seen corresponding path program 4 times [2024-06-03 19:36:18,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:18,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121605468] [2024-06-03 19:36:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:18,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:19,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:19,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121605468] [2024-06-03 19:36:19,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121605468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:19,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456988696] [2024-06-03 19:36:19,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:19,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:19,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:36:19,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 98 transitions, 794 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:19,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:19,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:36:19,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:20,284 INFO L124 PetriNetUnfolderBase]: 284/515 cut-off events. [2024-06-03 19:36:20,284 INFO L125 PetriNetUnfolderBase]: For 23318/23318 co-relation queries the response was YES. [2024-06-03 19:36:20,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 515 events. 284/515 cut-off events. For 23318/23318 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2058 event pairs, 42 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 3248. Up to 421 conditions per place. [2024-06-03 19:36:20,288 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2024-06-03 19:36:20,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 112 transitions, 1030 flow [2024-06-03 19:36:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:36:20,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:36:20,289 INFO L175 Difference]: Start difference. First operand has 121 places, 98 transitions, 794 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:36:20,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 112 transitions, 1030 flow [2024-06-03 19:36:20,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 961 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:20,313 INFO L231 Difference]: Finished difference. Result has 124 places, 99 transitions, 789 flow [2024-06-03 19:36:20,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=789, PETRI_PLACES=124, PETRI_TRANSITIONS=99} [2024-06-03 19:36:20,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-03 19:36:20,314 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 99 transitions, 789 flow [2024-06-03 19:36:20,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:20,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:20,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:20,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:36:20,315 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)] === [2024-06-03 19:36:20,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash 293699668, now seen corresponding path program 2 times [2024-06-03 19:36:20,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:20,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010827695] [2024-06-03 19:36:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:20,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010827695] [2024-06-03 19:36:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010827695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:20,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17335149] [2024-06-03 19:36:20,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:21,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:21,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 99 transitions, 789 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:21,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:21,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:21,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:21,265 INFO L124 PetriNetUnfolderBase]: 329/581 cut-off events. [2024-06-03 19:36:21,265 INFO L125 PetriNetUnfolderBase]: For 28672/28672 co-relation queries the response was YES. [2024-06-03 19:36:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 581 events. 329/581 cut-off events. For 28672/28672 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2355 event pairs, 55 based on Foata normal form. 3/582 useless extension candidates. Maximal degree in co-relation 3792. Up to 393 conditions per place. [2024-06-03 19:36:21,276 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 36 changer transitions 0/127 dead transitions. [2024-06-03 19:36:21,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 127 transitions, 1309 flow [2024-06-03 19:36:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-03 19:36:21,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-03 19:36:21,278 INFO L175 Difference]: Start difference. First operand has 124 places, 99 transitions, 789 flow. Second operand 9 states and 122 transitions. [2024-06-03 19:36:21,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 127 transitions, 1309 flow [2024-06-03 19:36:21,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 1255 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:21,308 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 882 flow [2024-06-03 19:36:21,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=117, 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=9, PETRI_FLOW=882, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2024-06-03 19:36:21,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-03 19:36:21,309 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 882 flow [2024-06-03 19:36:21,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:21,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:21,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:21,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:36:21,309 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)] === [2024-06-03 19:36:21,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash 293879158, now seen corresponding path program 3 times [2024-06-03 19:36:21,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:21,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284961200] [2024-06-03 19:36:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:21,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:21,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284961200] [2024-06-03 19:36:21,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284961200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:21,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:21,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:21,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586366431] [2024-06-03 19:36:21,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:21,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:21,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:22,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:22,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 882 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:22,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:22,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:22,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:22,357 INFO L124 PetriNetUnfolderBase]: 338/596 cut-off events. [2024-06-03 19:36:22,358 INFO L125 PetriNetUnfolderBase]: For 30470/30470 co-relation queries the response was YES. [2024-06-03 19:36:22,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 596 events. 338/596 cut-off events. For 30470/30470 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2423 event pairs, 53 based on Foata normal form. 3/597 useless extension candidates. Maximal degree in co-relation 3974. Up to 401 conditions per place. [2024-06-03 19:36:22,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 41 changer transitions 0/127 dead transitions. [2024-06-03 19:36:22,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 127 transitions, 1360 flow [2024-06-03 19:36:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-03 19:36:22,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-03 19:36:22,366 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 882 flow. Second operand 9 states and 118 transitions. [2024-06-03 19:36:22,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 127 transitions, 1360 flow [2024-06-03 19:36:22,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 1317 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 19:36:22,434 INFO L231 Difference]: Finished difference. Result has 131 places, 107 transitions, 952 flow [2024-06-03 19:36:22,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2024-06-03 19:36:22,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-03 19:36:22,435 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 952 flow [2024-06-03 19:36:22,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:22,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:22,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:22,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:36:22,437 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)] === [2024-06-03 19:36:22,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash 293872648, now seen corresponding path program 4 times [2024-06-03 19:36:22,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:22,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793615538] [2024-06-03 19:36:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793615538] [2024-06-03 19:36:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793615538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:23,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:23,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538984969] [2024-06-03 19:36:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:23,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:23,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:23,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 952 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:23,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:23,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:23,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:23,461 INFO L124 PetriNetUnfolderBase]: 332/587 cut-off events. [2024-06-03 19:36:23,461 INFO L125 PetriNetUnfolderBase]: For 29789/29789 co-relation queries the response was YES. [2024-06-03 19:36:23,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 587 events. 332/587 cut-off events. For 29789/29789 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2388 event pairs, 51 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 3918. Up to 397 conditions per place. [2024-06-03 19:36:23,479 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 39 changer transitions 0/128 dead transitions. [2024-06-03 19:36:23,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 128 transitions, 1336 flow [2024-06-03 19:36:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-03 19:36:23,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-03 19:36:23,498 INFO L175 Difference]: Start difference. First operand has 131 places, 107 transitions, 952 flow. Second operand 9 states and 120 transitions. [2024-06-03 19:36:23,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 128 transitions, 1336 flow [2024-06-03 19:36:23,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1237 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:23,557 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 936 flow [2024-06-03 19:36:23,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=936, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2024-06-03 19:36:23,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-03 19:36:23,559 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 936 flow [2024-06-03 19:36:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:23,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:23,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:23,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:36:23,560 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)] === [2024-06-03 19:36:23,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash 166016328, now seen corresponding path program 5 times [2024-06-03 19:36:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69063305] [2024-06-03 19:36:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:24,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:24,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69063305] [2024-06-03 19:36:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69063305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:24,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:24,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431299848] [2024-06-03 19:36:24,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:24,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:24,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:24,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:24,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:24,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:24,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:24,779 INFO L124 PetriNetUnfolderBase]: 330/584 cut-off events. [2024-06-03 19:36:24,780 INFO L125 PetriNetUnfolderBase]: For 28623/28623 co-relation queries the response was YES. [2024-06-03 19:36:24,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 584 events. 330/584 cut-off events. For 28623/28623 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2363 event pairs, 54 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 3837. Up to 506 conditions per place. [2024-06-03 19:36:24,785 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 33 changer transitions 0/119 dead transitions. [2024-06-03 19:36:24,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 119 transitions, 1198 flow [2024-06-03 19:36:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:36:24,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:36:24,810 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 936 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:36:24,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 119 transitions, 1198 flow [2024-06-03 19:36:24,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 119 transitions, 1093 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:24,863 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 902 flow [2024-06-03 19:36:24,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2024-06-03 19:36:24,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-03 19:36:24,864 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 902 flow [2024-06-03 19:36:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:24,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:24,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:36:24,864 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)] === [2024-06-03 19:36:24,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1204036464, now seen corresponding path program 6 times [2024-06-03 19:36:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:24,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704491048] [2024-06-03 19:36:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:25,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704491048] [2024-06-03 19:36:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704491048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:25,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:25,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841208145] [2024-06-03 19:36:25,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:25,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:25,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:25,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 902 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:25,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:25,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:25,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:25,950 INFO L124 PetriNetUnfolderBase]: 333/589 cut-off events. [2024-06-03 19:36:25,951 INFO L125 PetriNetUnfolderBase]: For 29823/29823 co-relation queries the response was YES. [2024-06-03 19:36:25,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 589 events. 333/589 cut-off events. For 29823/29823 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2405 event pairs, 52 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3844. Up to 539 conditions per place. [2024-06-03 19:36:25,957 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-03 19:36:25,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 121 transitions, 1300 flow [2024-06-03 19:36:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 19:36:25,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:36:25,959 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 902 flow. Second operand 9 states and 102 transitions. [2024-06-03 19:36:25,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 121 transitions, 1300 flow [2024-06-03 19:36:26,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 121 transitions, 1229 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:26,023 INFO L231 Difference]: Finished difference. Result has 135 places, 111 transitions, 946 flow [2024-06-03 19:36:26,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=946, PETRI_PLACES=135, PETRI_TRANSITIONS=111} [2024-06-03 19:36:26,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:36:26,026 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 111 transitions, 946 flow [2024-06-03 19:36:26,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:26,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:26,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:26,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:36:26,027 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)] === [2024-06-03 19:36:26,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 459333842, now seen corresponding path program 5 times [2024-06-03 19:36:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946852270] [2024-06-03 19:36:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:26,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946852270] [2024-06-03 19:36:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946852270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086139618] [2024-06-03 19:36:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:26,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:26,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:36:26,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 111 transitions, 946 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:26,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:26,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:36:26,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:27,248 INFO L124 PetriNetUnfolderBase]: 318/572 cut-off events. [2024-06-03 19:36:27,249 INFO L125 PetriNetUnfolderBase]: For 30524/30524 co-relation queries the response was YES. [2024-06-03 19:36:27,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 572 events. 318/572 cut-off events. For 30524/30524 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2365 event pairs, 53 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 3704. Up to 504 conditions per place. [2024-06-03 19:36:27,259 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 88 selfloop transitions, 13 changer transitions 0/121 dead transitions. [2024-06-03 19:36:27,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 1170 flow [2024-06-03 19:36:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:36:27,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:36:27,261 INFO L175 Difference]: Start difference. First operand has 135 places, 111 transitions, 946 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:36:27,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 1170 flow [2024-06-03 19:36:27,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 121 transitions, 1106 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-03 19:36:27,329 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 912 flow [2024-06-03 19:36:27,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2024-06-03 19:36:27,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-03 19:36:27,329 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 912 flow [2024-06-03 19:36:27,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:27,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:27,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:36:27,330 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)] === [2024-06-03 19:36:27,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1409278096, now seen corresponding path program 5 times [2024-06-03 19:36:27,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:27,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228614709] [2024-06-03 19:36:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:27,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:28,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228614709] [2024-06-03 19:36:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228614709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588905677] [2024-06-03 19:36:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:28,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:28,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:28,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:28,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 912 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:28,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:28,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:28,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:28,501 INFO L124 PetriNetUnfolderBase]: 354/623 cut-off events. [2024-06-03 19:36:28,501 INFO L125 PetriNetUnfolderBase]: For 35680/35680 co-relation queries the response was YES. [2024-06-03 19:36:28,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4183 conditions, 623 events. 354/623 cut-off events. For 35680/35680 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2580 event pairs, 57 based on Foata normal form. 3/624 useless extension candidates. Maximal degree in co-relation 4111. Up to 502 conditions per place. [2024-06-03 19:36:28,507 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 27 changer transitions 0/132 dead transitions. [2024-06-03 19:36:28,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1438 flow [2024-06-03 19:36:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:36:28,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:36:28,509 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 912 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:36:28,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1438 flow [2024-06-03 19:36:28,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 1367 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:28,570 INFO L231 Difference]: Finished difference. Result has 139 places, 115 transitions, 952 flow [2024-06-03 19:36:28,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=139, PETRI_TRANSITIONS=115} [2024-06-03 19:36:28,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-03 19:36:28,571 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 115 transitions, 952 flow [2024-06-03 19:36:28,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:28,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:28,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:28,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:36:28,572 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)] === [2024-06-03 19:36:28,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:28,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1409457772, now seen corresponding path program 7 times [2024-06-03 19:36:28,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:28,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060866676] [2024-06-03 19:36:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:28,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060866676] [2024-06-03 19:36:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060866676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388616749] [2024-06-03 19:36:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:29,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:29,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 115 transitions, 952 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:29,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:29,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:29,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:29,761 INFO L124 PetriNetUnfolderBase]: 357/628 cut-off events. [2024-06-03 19:36:29,761 INFO L125 PetriNetUnfolderBase]: For 35320/35320 co-relation queries the response was YES. [2024-06-03 19:36:29,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 628 events. 357/628 cut-off events. For 35320/35320 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2610 event pairs, 61 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 4159. Up to 589 conditions per place. [2024-06-03 19:36:29,780 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2024-06-03 19:36:29,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 126 transitions, 1238 flow [2024-06-03 19:36:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 19:36:29,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-03 19:36:29,794 INFO L175 Difference]: Start difference. First operand has 139 places, 115 transitions, 952 flow. Second operand 9 states and 100 transitions. [2024-06-03 19:36:29,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 126 transitions, 1238 flow [2024-06-03 19:36:29,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 126 transitions, 1128 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:29,874 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 913 flow [2024-06-03 19:36:29,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-06-03 19:36:29,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-03 19:36:29,875 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 913 flow [2024-06-03 19:36:29,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:29,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:29,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:29,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:36:29,876 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)] === [2024-06-03 19:36:29,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1409457586, now seen corresponding path program 6 times [2024-06-03 19:36:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062828102] [2024-06-03 19:36:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:30,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:30,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062828102] [2024-06-03 19:36:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062828102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:30,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:30,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:30,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169965516] [2024-06-03 19:36:30,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:30,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:30,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:30,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:30,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:30,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:30,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 913 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:30,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:30,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:30,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:30,850 INFO L124 PetriNetUnfolderBase]: 366/643 cut-off events. [2024-06-03 19:36:30,850 INFO L125 PetriNetUnfolderBase]: For 38591/38591 co-relation queries the response was YES. [2024-06-03 19:36:30,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4151 conditions, 643 events. 366/643 cut-off events. For 38591/38591 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2699 event pairs, 53 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 4081. Up to 515 conditions per place. [2024-06-03 19:36:30,855 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 31 changer transitions 0/135 dead transitions. [2024-06-03 19:36:30,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1331 flow [2024-06-03 19:36:30,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:36:30,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 19:36:30,856 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 913 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:36:30,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1331 flow [2024-06-03 19:36:30,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 135 transitions, 1280 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:30,909 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 951 flow [2024-06-03 19:36:30,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=951, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-06-03 19:36:30,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-03 19:36:30,910 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 951 flow [2024-06-03 19:36:30,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:30,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:30,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:30,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:36:30,910 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)] === [2024-06-03 19:36:30,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1409284606, now seen corresponding path program 7 times [2024-06-03 19:36:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:30,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190788455] [2024-06-03 19:36:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:30,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190788455] [2024-06-03 19:36:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190788455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387444934] [2024-06-03 19:36:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:31,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:31,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:31,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:31,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:31,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:31,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:31,723 INFO L124 PetriNetUnfolderBase]: 360/634 cut-off events. [2024-06-03 19:36:31,723 INFO L125 PetriNetUnfolderBase]: For 37202/37202 co-relation queries the response was YES. [2024-06-03 19:36:31,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 634 events. 360/634 cut-off events. For 37202/37202 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2656 event pairs, 51 based on Foata normal form. 3/635 useless extension candidates. Maximal degree in co-relation 3989. Up to 511 conditions per place. [2024-06-03 19:36:31,727 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2024-06-03 19:36:31,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1359 flow [2024-06-03 19:36:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:36:31,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:36:31,728 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 951 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:36:31,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1359 flow [2024-06-03 19:36:31,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 137 transitions, 1286 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:31,779 INFO L231 Difference]: Finished difference. Result has 144 places, 119 transitions, 939 flow [2024-06-03 19:36:31,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=939, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2024-06-03 19:36:31,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-03 19:36:31,780 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 939 flow [2024-06-03 19:36:31,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:31,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:31,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:31,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:36:31,780 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)] === [2024-06-03 19:36:31,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:31,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1409284792, now seen corresponding path program 8 times [2024-06-03 19:36:31,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:31,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835845936] [2024-06-03 19:36:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:31,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:32,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835845936] [2024-06-03 19:36:32,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835845936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:32,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:32,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:32,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960550341] [2024-06-03 19:36:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:32,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:32,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:32,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:32,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 119 transitions, 939 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:32,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:32,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:32,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:32,837 INFO L124 PetriNetUnfolderBase]: 363/639 cut-off events. [2024-06-03 19:36:32,838 INFO L125 PetriNetUnfolderBase]: For 36236/36236 co-relation queries the response was YES. [2024-06-03 19:36:32,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 639 events. 363/639 cut-off events. For 36236/36236 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2674 event pairs, 59 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 4005. Up to 600 conditions per place. [2024-06-03 19:36:32,842 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2024-06-03 19:36:32,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 130 transitions, 1237 flow [2024-06-03 19:36:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 19:36:32,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 19:36:32,843 INFO L175 Difference]: Start difference. First operand has 144 places, 119 transitions, 939 flow. Second operand 9 states and 101 transitions. [2024-06-03 19:36:32,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 130 transitions, 1237 flow [2024-06-03 19:36:32,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 1175 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:32,899 INFO L231 Difference]: Finished difference. Result has 145 places, 121 transitions, 950 flow [2024-06-03 19:36:32,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=950, PETRI_PLACES=145, PETRI_TRANSITIONS=121} [2024-06-03 19:36:32,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-03 19:36:32,899 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 121 transitions, 950 flow [2024-06-03 19:36:32,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:32,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:32,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:36:32,900 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)] === [2024-06-03 19:36:32,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1181376946, now seen corresponding path program 8 times [2024-06-03 19:36:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:32,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855821909] [2024-06-03 19:36:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:33,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:33,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855821909] [2024-06-03 19:36:33,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855821909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:33,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:33,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7540911] [2024-06-03 19:36:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:33,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:33,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:33,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 121 transitions, 950 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:33,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:33,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:33,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:33,828 INFO L124 PetriNetUnfolderBase]: 387/678 cut-off events. [2024-06-03 19:36:33,828 INFO L125 PetriNetUnfolderBase]: For 43719/43719 co-relation queries the response was YES. [2024-06-03 19:36:33,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 678 events. 387/678 cut-off events. For 43719/43719 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2887 event pairs, 61 based on Foata normal form. 3/679 useless extension candidates. Maximal degree in co-relation 4336. Up to 591 conditions per place. [2024-06-03 19:36:33,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2024-06-03 19:36:33,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 142 transitions, 1512 flow [2024-06-03 19:36:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:36:33,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-03 19:36:33,833 INFO L175 Difference]: Start difference. First operand has 145 places, 121 transitions, 950 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:36:33,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 142 transitions, 1512 flow [2024-06-03 19:36:33,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1459 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:33,892 INFO L231 Difference]: Finished difference. Result has 147 places, 125 transitions, 992 flow [2024-06-03 19:36:33,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=992, PETRI_PLACES=147, PETRI_TRANSITIONS=125} [2024-06-03 19:36:33,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-03 19:36:33,893 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 125 transitions, 992 flow [2024-06-03 19:36:33,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:33,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:33,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:33,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:36:33,894 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)] === [2024-06-03 19:36:33,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1181383456, now seen corresponding path program 9 times [2024-06-03 19:36:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253550356] [2024-06-03 19:36:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253550356] [2024-06-03 19:36:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253550356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:34,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044988688] [2024-06-03 19:36:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:34,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:34,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:34,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:34,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 125 transitions, 992 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:34,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:34,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:34,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:34,798 INFO L124 PetriNetUnfolderBase]: 381/669 cut-off events. [2024-06-03 19:36:34,798 INFO L125 PetriNetUnfolderBase]: For 41978/41978 co-relation queries the response was YES. [2024-06-03 19:36:34,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 669 events. 381/669 cut-off events. For 41978/41978 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2849 event pairs, 53 based on Foata normal form. 3/670 useless extension candidates. Maximal degree in co-relation 4199. Up to 587 conditions per place. [2024-06-03 19:36:34,803 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-03 19:36:34,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 1408 flow [2024-06-03 19:36:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:36:34,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 19:36:34,804 INFO L175 Difference]: Start difference. First operand has 147 places, 125 transitions, 992 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:36:34,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 1408 flow [2024-06-03 19:36:34,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 1340 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:34,862 INFO L231 Difference]: Finished difference. Result has 150 places, 125 transitions, 973 flow [2024-06-03 19:36:34,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=150, PETRI_TRANSITIONS=125} [2024-06-03 19:36:34,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-03 19:36:34,863 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 125 transitions, 973 flow [2024-06-03 19:36:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:34,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:34,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:34,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:36:34,864 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)] === [2024-06-03 19:36:34,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1181383642, now seen corresponding path program 9 times [2024-06-03 19:36:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907758475] [2024-06-03 19:36:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:34,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:35,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907758475] [2024-06-03 19:36:35,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907758475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:35,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:35,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:35,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893116134] [2024-06-03 19:36:35,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:35,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:35,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:35,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 125 transitions, 973 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:35,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:35,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:35,955 INFO L124 PetriNetUnfolderBase]: 379/666 cut-off events. [2024-06-03 19:36:35,955 INFO L125 PetriNetUnfolderBase]: For 39585/39585 co-relation queries the response was YES. [2024-06-03 19:36:35,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 666 events. 379/666 cut-off events. For 39585/39585 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2827 event pairs, 63 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 4117. Up to 642 conditions per place. [2024-06-03 19:36:35,959 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2024-06-03 19:36:35,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 134 transitions, 1257 flow [2024-06-03 19:36:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:36:35,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:36:35,961 INFO L175 Difference]: Start difference. First operand has 150 places, 125 transitions, 973 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:36:35,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 134 transitions, 1257 flow [2024-06-03 19:36:36,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 134 transitions, 1191 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:36,027 INFO L231 Difference]: Finished difference. Result has 151 places, 125 transitions, 940 flow [2024-06-03 19:36:36,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=940, PETRI_PLACES=151, PETRI_TRANSITIONS=125} [2024-06-03 19:36:36,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-03 19:36:36,037 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 125 transitions, 940 flow [2024-06-03 19:36:36,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:36,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:36,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:36,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:36:36,038 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)] === [2024-06-03 19:36:36,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1172805818, now seen corresponding path program 1 times [2024-06-03 19:36:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254065244] [2024-06-03 19:36:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254065244] [2024-06-03 19:36:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254065244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:36,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:36,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902724619] [2024-06-03 19:36:36,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:36,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:36,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:36,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:36,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:36,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:36,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 125 transitions, 940 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:36,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:36,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:36,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:37,082 INFO L124 PetriNetUnfolderBase]: 375/660 cut-off events. [2024-06-03 19:36:37,083 INFO L125 PetriNetUnfolderBase]: For 39758/39758 co-relation queries the response was YES. [2024-06-03 19:36:37,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4045 conditions, 660 events. 375/660 cut-off events. For 39758/39758 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2791 event pairs, 55 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 3969. Up to 628 conditions per place. [2024-06-03 19:36:37,087 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2024-06-03 19:36:37,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 138 transitions, 1252 flow [2024-06-03 19:36:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 19:36:37,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:36:37,088 INFO L175 Difference]: Start difference. First operand has 151 places, 125 transitions, 940 flow. Second operand 9 states and 99 transitions. [2024-06-03 19:36:37,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 138 transitions, 1252 flow [2024-06-03 19:36:37,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 138 transitions, 1205 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:37,153 INFO L231 Difference]: Finished difference. Result has 152 places, 127 transitions, 946 flow [2024-06-03 19:36:37,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=946, PETRI_PLACES=152, PETRI_TRANSITIONS=127} [2024-06-03 19:36:37,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-03 19:36:37,154 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 127 transitions, 946 flow [2024-06-03 19:36:37,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:37,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:37,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:37,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:36:37,155 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)] === [2024-06-03 19:36:37,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1173102736, now seen corresponding path program 10 times [2024-06-03 19:36:37,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:37,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803555599] [2024-06-03 19:36:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803555599] [2024-06-03 19:36:37,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803555599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:37,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:37,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224191002] [2024-06-03 19:36:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:37,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:37,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:37,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 127 transitions, 946 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:37,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:37,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:37,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:38,016 INFO L124 PetriNetUnfolderBase]: 369/651 cut-off events. [2024-06-03 19:36:38,017 INFO L125 PetriNetUnfolderBase]: For 38324/38324 co-relation queries the response was YES. [2024-06-03 19:36:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 651 events. 369/651 cut-off events. For 38324/38324 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2760 event pairs, 54 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 3813. Up to 611 conditions per place. [2024-06-03 19:36:38,021 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2024-06-03 19:36:38,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1254 flow [2024-06-03 19:36:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 19:36:38,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 19:36:38,022 INFO L175 Difference]: Start difference. First operand has 152 places, 127 transitions, 946 flow. Second operand 9 states and 101 transitions. [2024-06-03 19:36:38,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1254 flow [2024-06-03 19:36:38,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1202 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:38,093 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 927 flow [2024-06-03 19:36:38,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=927, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-06-03 19:36:38,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-03 19:36:38,093 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 927 flow [2024-06-03 19:36:38,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:38,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:38,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:38,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:36:38,094 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)] === [2024-06-03 19:36:38,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1172794906, now seen corresponding path program 1 times [2024-06-03 19:36:38,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:38,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203825888] [2024-06-03 19:36:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:38,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:39,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203825888] [2024-06-03 19:36:39,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203825888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:39,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353260186] [2024-06-03 19:36:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:39,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:39,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:39,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:39,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 927 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:39,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:39,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:39,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:39,395 INFO L124 PetriNetUnfolderBase]: 366/646 cut-off events. [2024-06-03 19:36:39,395 INFO L125 PetriNetUnfolderBase]: For 35605/35605 co-relation queries the response was YES. [2024-06-03 19:36:39,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 646 events. 366/646 cut-off events. For 35605/35605 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2706 event pairs, 52 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 3682. Up to 616 conditions per place. [2024-06-03 19:36:39,399 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 123 selfloop transitions, 13 changer transitions 0/138 dead transitions. [2024-06-03 19:36:39,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 138 transitions, 1223 flow [2024-06-03 19:36:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:36:39,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:36:39,400 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 927 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:36:39,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 138 transitions, 1223 flow [2024-06-03 19:36:39,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 138 transitions, 1179 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:39,450 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 913 flow [2024-06-03 19:36:39,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-06-03 19:36:39,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-03 19:36:39,451 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 913 flow [2024-06-03 19:36:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:39,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:39,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:39,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:36:39,452 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)] === [2024-06-03 19:36:39,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash 858653444, now seen corresponding path program 1 times [2024-06-03 19:36:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:39,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239731956] [2024-06-03 19:36:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:40,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:40,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239731956] [2024-06-03 19:36:40,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239731956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:40,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:40,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295367039] [2024-06-03 19:36:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:40,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:40,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:40,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 913 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:40,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:40,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:40,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:40,763 INFO L124 PetriNetUnfolderBase]: 377/667 cut-off events. [2024-06-03 19:36:40,764 INFO L125 PetriNetUnfolderBase]: For 39945/39945 co-relation queries the response was YES. [2024-06-03 19:36:40,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 667 events. 377/667 cut-off events. For 39945/39945 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2857 event pairs, 39 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 3905. Up to 543 conditions per place. [2024-06-03 19:36:40,768 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-06-03 19:36:40,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1411 flow [2024-06-03 19:36:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:36:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:36:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:36:40,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:36:40,769 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 913 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:36:40,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1411 flow [2024-06-03 19:36:40,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 153 transitions, 1379 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:40,850 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 967 flow [2024-06-03 19:36:40,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=967, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2024-06-03 19:36:40,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-03 19:36:40,851 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 967 flow [2024-06-03 19:36:40,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:40,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:40,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:40,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:36:40,851 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)] === [2024-06-03 19:36:40,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1148851412, now seen corresponding path program 2 times [2024-06-03 19:36:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:40,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055668533] [2024-06-03 19:36:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055668533] [2024-06-03 19:36:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055668533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013534170] [2024-06-03 19:36:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:41,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:41,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:41,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:41,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 967 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:41,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:41,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:41,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:42,007 INFO L124 PetriNetUnfolderBase]: 388/688 cut-off events. [2024-06-03 19:36:42,007 INFO L125 PetriNetUnfolderBase]: For 44709/44709 co-relation queries the response was YES. [2024-06-03 19:36:42,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 688 events. 388/688 cut-off events. For 44709/44709 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3005 event pairs, 57 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4195. Up to 608 conditions per place. [2024-06-03 19:36:42,012 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 128 selfloop transitions, 24 changer transitions 0/154 dead transitions. [2024-06-03 19:36:42,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1471 flow [2024-06-03 19:36:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:36:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:36:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:36:42,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:36:42,015 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 967 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:36:42,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1471 flow [2024-06-03 19:36:42,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1398 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:42,077 INFO L231 Difference]: Finished difference. Result has 162 places, 131 transitions, 984 flow [2024-06-03 19:36:42,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=984, PETRI_PLACES=162, PETRI_TRANSITIONS=131} [2024-06-03 19:36:42,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-03 19:36:42,078 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 131 transitions, 984 flow [2024-06-03 19:36:42,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:42,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:42,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:42,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:36:42,078 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)] === [2024-06-03 19:36:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1659644390, now seen corresponding path program 3 times [2024-06-03 19:36:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300602793] [2024-06-03 19:36:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:43,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300602793] [2024-06-03 19:36:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300602793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:43,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:43,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:43,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105450687] [2024-06-03 19:36:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:43,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:43,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:43,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:43,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:43,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 131 transitions, 984 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:43,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:43,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:43,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:43,604 INFO L124 PetriNetUnfolderBase]: 429/763 cut-off events. [2024-06-03 19:36:43,604 INFO L125 PetriNetUnfolderBase]: For 49397/49397 co-relation queries the response was YES. [2024-06-03 19:36:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 763 events. 429/763 cut-off events. For 49397/49397 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3423 event pairs, 76 based on Foata normal form. 4/765 useless extension candidates. Maximal degree in co-relation 4537. Up to 701 conditions per place. [2024-06-03 19:36:43,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-06-03 19:36:43,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 1569 flow [2024-06-03 19:36:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:36:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:36:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-03 19:36:43,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-03 19:36:43,611 INFO L175 Difference]: Start difference. First operand has 162 places, 131 transitions, 984 flow. Second operand 13 states and 134 transitions. [2024-06-03 19:36:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 1569 flow [2024-06-03 19:36:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 1511 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:43,687 INFO L231 Difference]: Finished difference. Result has 176 places, 155 transitions, 1279 flow [2024-06-03 19:36:43,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1279, PETRI_PLACES=176, PETRI_TRANSITIONS=155} [2024-06-03 19:36:43,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-03 19:36:43,687 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 155 transitions, 1279 flow [2024-06-03 19:36:43,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:43,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:43,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:43,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:36:43,688 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)] === [2024-06-03 19:36:43,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1148855287, now seen corresponding path program 1 times [2024-06-03 19:36:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:43,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70903082] [2024-06-03 19:36:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:44,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70903082] [2024-06-03 19:36:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70903082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:44,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057345221] [2024-06-03 19:36:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:44,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:44,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:44,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:44,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 155 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:44,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:44,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:45,039 INFO L124 PetriNetUnfolderBase]: 438/776 cut-off events. [2024-06-03 19:36:45,040 INFO L125 PetriNetUnfolderBase]: For 49582/49586 co-relation queries the response was YES. [2024-06-03 19:36:45,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 776 events. 438/776 cut-off events. For 49582/49586 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3473 event pairs, 60 based on Foata normal form. 5/779 useless extension candidates. Maximal degree in co-relation 4774. Up to 651 conditions per place. [2024-06-03 19:36:45,044 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 50 changer transitions 0/182 dead transitions. [2024-06-03 19:36:45,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 182 transitions, 1733 flow [2024-06-03 19:36:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:36:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:36:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-03 19:36:45,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-03 19:36:45,046 INFO L175 Difference]: Start difference. First operand has 176 places, 155 transitions, 1279 flow. Second operand 13 states and 146 transitions. [2024-06-03 19:36:45,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 182 transitions, 1733 flow [2024-06-03 19:36:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 182 transitions, 1706 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 19:36:45,117 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 1400 flow [2024-06-03 19:36:45,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1400, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2024-06-03 19:36:45,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-03 19:36:45,118 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 1400 flow [2024-06-03 19:36:45,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:45,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:45,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:45,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:36:45,119 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)] === [2024-06-03 19:36:45,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:45,119 INFO L85 PathProgramCache]: Analyzing trace with hash 862314854, now seen corresponding path program 4 times [2024-06-03 19:36:45,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:45,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741261615] [2024-06-03 19:36:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:45,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741261615] [2024-06-03 19:36:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741261615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:46,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146598853] [2024-06-03 19:36:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:46,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:46,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 1400 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:46,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:46,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:46,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:46,599 INFO L124 PetriNetUnfolderBase]: 442/784 cut-off events. [2024-06-03 19:36:46,599 INFO L125 PetriNetUnfolderBase]: For 49537/49541 co-relation queries the response was YES. [2024-06-03 19:36:46,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5076 conditions, 784 events. 442/784 cut-off events. For 49537/49541 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3540 event pairs, 60 based on Foata normal form. 4/786 useless extension candidates. Maximal degree in co-relation 4983. Up to 684 conditions per place. [2024-06-03 19:36:46,605 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 33 changer transitions 0/177 dead transitions. [2024-06-03 19:36:46,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 177 transitions, 1924 flow [2024-06-03 19:36:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 19:36:46,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 19:36:46,617 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 1400 flow. Second operand 10 states and 116 transitions. [2024-06-03 19:36:46,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 177 transitions, 1924 flow [2024-06-03 19:36:46,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 177 transitions, 1810 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-03 19:36:46,713 INFO L231 Difference]: Finished difference. Result has 185 places, 159 transitions, 1368 flow [2024-06-03 19:36:46,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1368, PETRI_PLACES=185, PETRI_TRANSITIONS=159} [2024-06-03 19:36:46,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-03 19:36:46,714 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 159 transitions, 1368 flow [2024-06-03 19:36:46,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:46,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:46,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:46,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:36:46,714 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)] === [2024-06-03 19:36:46,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash 846033213, now seen corresponding path program 2 times [2024-06-03 19:36:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:46,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354161286] [2024-06-03 19:36:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:46,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354161286] [2024-06-03 19:36:47,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354161286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:47,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635313710] [2024-06-03 19:36:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:47,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:47,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:47,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:47,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:47,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 159 transitions, 1368 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:47,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:47,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:47,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:47,784 INFO L124 PetriNetUnfolderBase]: 453/803 cut-off events. [2024-06-03 19:36:47,784 INFO L125 PetriNetUnfolderBase]: For 51326/51326 co-relation queries the response was YES. [2024-06-03 19:36:47,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 803 events. 453/803 cut-off events. For 51326/51326 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3671 event pairs, 54 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 5097. Up to 637 conditions per place. [2024-06-03 19:36:47,791 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 51 changer transitions 0/195 dead transitions. [2024-06-03 19:36:47,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 195 transitions, 2056 flow [2024-06-03 19:36:47,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:36:47,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:36:47,792 INFO L175 Difference]: Start difference. First operand has 185 places, 159 transitions, 1368 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:36:47,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 195 transitions, 2056 flow [2024-06-03 19:36:47,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 1947 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:47,892 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 1573 flow [2024-06-03 19:36:47,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1573, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2024-06-03 19:36:47,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-03 19:36:47,893 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 1573 flow [2024-06-03 19:36:47,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:47,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:47,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:47,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:36:47,894 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)] === [2024-06-03 19:36:47,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:47,894 INFO L85 PathProgramCache]: Analyzing trace with hash 514605916, now seen corresponding path program 5 times [2024-06-03 19:36:47,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:47,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409276700] [2024-06-03 19:36:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409276700] [2024-06-03 19:36:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409276700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226859883] [2024-06-03 19:36:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:48,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:48,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:48,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 1573 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:48,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:48,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:48,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:49,261 INFO L124 PetriNetUnfolderBase]: 457/811 cut-off events. [2024-06-03 19:36:49,261 INFO L125 PetriNetUnfolderBase]: For 55211/55211 co-relation queries the response was YES. [2024-06-03 19:36:49,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5393 conditions, 811 events. 457/811 cut-off events. For 55211/55211 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3707 event pairs, 65 based on Foata normal form. 2/811 useless extension candidates. Maximal degree in co-relation 5295. Up to 699 conditions per place. [2024-06-03 19:36:49,266 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 46 changer transitions 0/194 dead transitions. [2024-06-03 19:36:49,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 194 transitions, 2009 flow [2024-06-03 19:36:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:36:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:36:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 19:36:49,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 19:36:49,268 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 1573 flow. Second operand 11 states and 127 transitions. [2024-06-03 19:36:49,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 194 transitions, 2009 flow [2024-06-03 19:36:49,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 194 transitions, 1955 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-03 19:36:49,362 INFO L231 Difference]: Finished difference. Result has 198 places, 180 transitions, 1636 flow [2024-06-03 19:36:49,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=198, PETRI_TRANSITIONS=180} [2024-06-03 19:36:49,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-03 19:36:49,362 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 180 transitions, 1636 flow [2024-06-03 19:36:49,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:49,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:49,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:49,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:36:49,363 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)] === [2024-06-03 19:36:49,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash 520319991, now seen corresponding path program 3 times [2024-06-03 19:36:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60939478] [2024-06-03 19:36:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:49,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:50,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:50,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60939478] [2024-06-03 19:36:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60939478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:50,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:50,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476323364] [2024-06-03 19:36:50,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:50,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:50,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:50,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:50,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:50,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 180 transitions, 1636 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:50,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:50,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:50,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:50,474 INFO L124 PetriNetUnfolderBase]: 466/826 cut-off events. [2024-06-03 19:36:50,475 INFO L125 PetriNetUnfolderBase]: For 58862/58862 co-relation queries the response was YES. [2024-06-03 19:36:50,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 826 events. 466/826 cut-off events. For 58862/58862 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3780 event pairs, 64 based on Foata normal form. 3/827 useless extension candidates. Maximal degree in co-relation 5413. Up to 576 conditions per place. [2024-06-03 19:36:50,481 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 74 changer transitions 0/201 dead transitions. [2024-06-03 19:36:50,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 201 transitions, 2129 flow [2024-06-03 19:36:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 19:36:50,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 19:36:50,487 INFO L175 Difference]: Start difference. First operand has 198 places, 180 transitions, 1636 flow. Second operand 10 states and 127 transitions. [2024-06-03 19:36:50,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 201 transitions, 2129 flow [2024-06-03 19:36:50,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 201 transitions, 2024 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:50,609 INFO L231 Difference]: Finished difference. Result has 199 places, 184 transitions, 1747 flow [2024-06-03 19:36:50,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1747, PETRI_PLACES=199, PETRI_TRANSITIONS=184} [2024-06-03 19:36:50,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-03 19:36:50,610 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 184 transitions, 1747 flow [2024-06-03 19:36:50,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:50,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:50,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:50,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:36:50,611 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)] === [2024-06-03 19:36:50,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 846182943, now seen corresponding path program 4 times [2024-06-03 19:36:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:50,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416895776] [2024-06-03 19:36:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:51,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:51,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416895776] [2024-06-03 19:36:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416895776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:51,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:51,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798924039] [2024-06-03 19:36:51,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:51,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:51,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:51,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:51,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:51,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 184 transitions, 1747 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:51,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:51,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:51,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:51,818 INFO L124 PetriNetUnfolderBase]: 475/841 cut-off events. [2024-06-03 19:36:51,819 INFO L125 PetriNetUnfolderBase]: For 61065/61065 co-relation queries the response was YES. [2024-06-03 19:36:51,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 841 events. 475/841 cut-off events. For 61065/61065 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3887 event pairs, 62 based on Foata normal form. 3/842 useless extension candidates. Maximal degree in co-relation 5634. Up to 591 conditions per place. [2024-06-03 19:36:51,826 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 69 changer transitions 0/206 dead transitions. [2024-06-03 19:36:51,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 2260 flow [2024-06-03 19:36:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 19:36:51,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 19:36:51,827 INFO L175 Difference]: Start difference. First operand has 199 places, 184 transitions, 1747 flow. Second operand 10 states and 131 transitions. [2024-06-03 19:36:51,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 2260 flow [2024-06-03 19:36:51,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 206 transitions, 2080 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:51,952 INFO L231 Difference]: Finished difference. Result has 201 places, 188 transitions, 1781 flow [2024-06-03 19:36:51,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=201, PETRI_TRANSITIONS=188} [2024-06-03 19:36:51,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 19:36:51,953 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 188 transitions, 1781 flow [2024-06-03 19:36:51,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:51,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:51,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:51,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:36:51,954 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)] === [2024-06-03 19:36:51,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 851545323, now seen corresponding path program 5 times [2024-06-03 19:36:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401023451] [2024-06-03 19:36:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:52,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401023451] [2024-06-03 19:36:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401023451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:52,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:52,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291569916] [2024-06-03 19:36:52,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:52,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:52,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:52,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:52,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 188 transitions, 1781 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:52,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:52,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:52,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:53,133 INFO L124 PetriNetUnfolderBase]: 484/856 cut-off events. [2024-06-03 19:36:53,133 INFO L125 PetriNetUnfolderBase]: For 63113/63113 co-relation queries the response was YES. [2024-06-03 19:36:53,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5860 conditions, 856 events. 484/856 cut-off events. For 63113/63113 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3977 event pairs, 64 based on Foata normal form. 3/857 useless extension candidates. Maximal degree in co-relation 5759. Up to 606 conditions per place. [2024-06-03 19:36:53,140 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 71 changer transitions 0/211 dead transitions. [2024-06-03 19:36:53,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 211 transitions, 2317 flow [2024-06-03 19:36:53,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-03 19:36:53,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:36:53,141 INFO L175 Difference]: Start difference. First operand has 201 places, 188 transitions, 1781 flow. Second operand 10 states and 130 transitions. [2024-06-03 19:36:53,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 211 transitions, 2317 flow [2024-06-03 19:36:53,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 211 transitions, 2139 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:53,275 INFO L231 Difference]: Finished difference. Result has 203 places, 192 transitions, 1829 flow [2024-06-03 19:36:53,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1829, PETRI_PLACES=203, PETRI_TRANSITIONS=192} [2024-06-03 19:36:53,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-03 19:36:53,276 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 192 transitions, 1829 flow [2024-06-03 19:36:53,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:53,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:53,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:53,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:36:53,277 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)] === [2024-06-03 19:36:53,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 846177363, now seen corresponding path program 6 times [2024-06-03 19:36:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:53,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129773422] [2024-06-03 19:36:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:53,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:54,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129773422] [2024-06-03 19:36:54,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129773422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519992845] [2024-06-03 19:36:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:54,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:54,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:54,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 192 transitions, 1829 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:54,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:54,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:54,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:54,624 INFO L124 PetriNetUnfolderBase]: 487/861 cut-off events. [2024-06-03 19:36:54,624 INFO L125 PetriNetUnfolderBase]: For 60972/60972 co-relation queries the response was YES. [2024-06-03 19:36:54,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 861 events. 487/861 cut-off events. For 60972/60972 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4014 event pairs, 62 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 5816. Up to 605 conditions per place. [2024-06-03 19:36:54,631 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 73 changer transitions 0/213 dead transitions. [2024-06-03 19:36:54,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 2330 flow [2024-06-03 19:36:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:36:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:36:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-03 19:36:54,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-03 19:36:54,633 INFO L175 Difference]: Start difference. First operand has 203 places, 192 transitions, 1829 flow. Second operand 11 states and 140 transitions. [2024-06-03 19:36:54,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 2330 flow [2024-06-03 19:36:54,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 213 transitions, 2140 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:54,780 INFO L231 Difference]: Finished difference. Result has 206 places, 194 transitions, 1832 flow [2024-06-03 19:36:54,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1832, PETRI_PLACES=206, PETRI_TRANSITIONS=194} [2024-06-03 19:36:54,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 19:36:54,780 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 194 transitions, 1832 flow [2024-06-03 19:36:54,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:54,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:54,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:54,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:36:54,781 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)] === [2024-06-03 19:36:54,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 520112601, now seen corresponding path program 7 times [2024-06-03 19:36:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816289784] [2024-06-03 19:36:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:55,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:55,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816289784] [2024-06-03 19:36:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816289784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:55,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78478494] [2024-06-03 19:36:55,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:55,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:55,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:55,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:55,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 194 transitions, 1832 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:55,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:55,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:55,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:56,011 INFO L124 PetriNetUnfolderBase]: 485/858 cut-off events. [2024-06-03 19:36:56,011 INFO L125 PetriNetUnfolderBase]: For 60497/60497 co-relation queries the response was YES. [2024-06-03 19:36:56,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 858 events. 485/858 cut-off events. For 60497/60497 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3993 event pairs, 62 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 5715. Up to 591 conditions per place. [2024-06-03 19:36:56,018 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 78 changer transitions 0/211 dead transitions. [2024-06-03 19:36:56,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2293 flow [2024-06-03 19:36:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:36:56,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 19:36:56,019 INFO L175 Difference]: Start difference. First operand has 206 places, 194 transitions, 1832 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:36:56,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2293 flow [2024-06-03 19:36:56,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 2120 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-03 19:36:56,162 INFO L231 Difference]: Finished difference. Result has 206 places, 194 transitions, 1820 flow [2024-06-03 19:36:56,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1820, PETRI_PLACES=206, PETRI_TRANSITIONS=194} [2024-06-03 19:36:56,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 19:36:56,163 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 194 transitions, 1820 flow [2024-06-03 19:36:56,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:56,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:56,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:36:56,163 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)] === [2024-06-03 19:36:56,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2089941738, now seen corresponding path program 6 times [2024-06-03 19:36:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163468196] [2024-06-03 19:36:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:56,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:56,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163468196] [2024-06-03 19:36:56,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163468196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:56,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132405692] [2024-06-03 19:36:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:56,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:57,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:57,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 194 transitions, 1820 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:57,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:57,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:57,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:57,308 INFO L124 PetriNetUnfolderBase]: 489/866 cut-off events. [2024-06-03 19:36:57,309 INFO L125 PetriNetUnfolderBase]: For 64391/64391 co-relation queries the response was YES. [2024-06-03 19:36:57,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5885 conditions, 866 events. 489/866 cut-off events. For 64391/64391 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4040 event pairs, 71 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 5782. Up to 765 conditions per place. [2024-06-03 19:36:57,316 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 164 selfloop transitions, 42 changer transitions 0/208 dead transitions. [2024-06-03 19:36:57,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 208 transitions, 2284 flow [2024-06-03 19:36:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 19:36:57,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 19:36:57,317 INFO L175 Difference]: Start difference. First operand has 206 places, 194 transitions, 1820 flow. Second operand 10 states and 116 transitions. [2024-06-03 19:36:57,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 208 transitions, 2284 flow [2024-06-03 19:36:57,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 208 transitions, 2111 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:57,478 INFO L231 Difference]: Finished difference. Result has 208 places, 195 transitions, 1757 flow [2024-06-03 19:36:57,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=208, PETRI_TRANSITIONS=195} [2024-06-03 19:36:57,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-03 19:36:57,479 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 195 transitions, 1757 flow [2024-06-03 19:36:57,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:57,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:57,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:36:57,480 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)] === [2024-06-03 19:36:57,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1000843004, now seen corresponding path program 7 times [2024-06-03 19:36:57,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:57,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265552764] [2024-06-03 19:36:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:57,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:58,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265552764] [2024-06-03 19:36:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265552764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:58,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039268636] [2024-06-03 19:36:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:58,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:58,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 195 transitions, 1757 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:58,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:58,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:58,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:58,880 INFO L124 PetriNetUnfolderBase]: 493/874 cut-off events. [2024-06-03 19:36:58,881 INFO L125 PetriNetUnfolderBase]: For 66298/66298 co-relation queries the response was YES. [2024-06-03 19:36:58,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5865 conditions, 874 events. 493/874 cut-off events. For 66298/66298 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4097 event pairs, 71 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 5761. Up to 742 conditions per place. [2024-06-03 19:36:58,888 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 161 selfloop transitions, 47 changer transitions 0/210 dead transitions. [2024-06-03 19:36:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 210 transitions, 2229 flow [2024-06-03 19:36:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:36:58,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 19:36:58,898 INFO L175 Difference]: Start difference. First operand has 208 places, 195 transitions, 1757 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:36:58,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 210 transitions, 2229 flow [2024-06-03 19:36:59,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 210 transitions, 2129 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:59,060 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 1779 flow [2024-06-03 19:36:59,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1779, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2024-06-03 19:36:59,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-03 19:36:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 1779 flow [2024-06-03 19:36:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:59,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:36:59,061 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)] === [2024-06-03 19:36:59,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1950868036, now seen corresponding path program 8 times [2024-06-03 19:36:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163481266] [2024-06-03 19:36:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:59,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:59,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163481266] [2024-06-03 19:36:59,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163481266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:59,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:59,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389465321] [2024-06-03 19:36:59,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:59,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:36:59,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 1779 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:36:59,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:59,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:36:59,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:00,247 INFO L124 PetriNetUnfolderBase]: 497/883 cut-off events. [2024-06-03 19:37:00,247 INFO L125 PetriNetUnfolderBase]: For 68406/68406 co-relation queries the response was YES. [2024-06-03 19:37:00,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 883 events. 497/883 cut-off events. For 68406/68406 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4156 event pairs, 87 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5841. Up to 823 conditions per place. [2024-06-03 19:37:00,254 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 31 changer transitions 0/207 dead transitions. [2024-06-03 19:37:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2235 flow [2024-06-03 19:37:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 19:37:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:37:00,255 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 1779 flow. Second operand 10 states and 110 transitions. [2024-06-03 19:37:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2235 flow [2024-06-03 19:37:00,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 2123 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:00,411 INFO L231 Difference]: Finished difference. Result has 212 places, 197 transitions, 1759 flow [2024-06-03 19:37:00,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1759, PETRI_PLACES=212, PETRI_TRANSITIONS=197} [2024-06-03 19:37:00,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-03 19:37:00,412 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 197 transitions, 1759 flow [2024-06-03 19:37:00,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:00,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:00,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:37:00,412 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)] === [2024-06-03 19:37:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash -743661251, now seen corresponding path program 8 times [2024-06-03 19:37:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652662003] [2024-06-03 19:37:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:01,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652662003] [2024-06-03 19:37:01,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652662003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:01,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:01,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:01,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328528653] [2024-06-03 19:37:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:01,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:01,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:01,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 197 transitions, 1759 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:01,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:01,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:01,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:01,542 INFO L124 PetriNetUnfolderBase]: 500/888 cut-off events. [2024-06-03 19:37:01,542 INFO L125 PetriNetUnfolderBase]: For 67884/67884 co-relation queries the response was YES. [2024-06-03 19:37:01,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 888 events. 500/888 cut-off events. For 67884/67884 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4201 event pairs, 79 based on Foata normal form. 1/887 useless extension candidates. Maximal degree in co-relation 5836. Up to 781 conditions per place. [2024-06-03 19:37:01,549 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 38 changer transitions 0/215 dead transitions. [2024-06-03 19:37:01,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 215 transitions, 2431 flow [2024-06-03 19:37:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 19:37:01,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:37:01,551 INFO L175 Difference]: Start difference. First operand has 212 places, 197 transitions, 1759 flow. Second operand 10 states and 115 transitions. [2024-06-03 19:37:01,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 215 transitions, 2431 flow [2024-06-03 19:37:01,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 2349 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:01,711 INFO L231 Difference]: Finished difference. Result has 215 places, 205 transitions, 1864 flow [2024-06-03 19:37:01,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=215, PETRI_TRANSITIONS=205} [2024-06-03 19:37:01,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 19:37:01,713 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 205 transitions, 1864 flow [2024-06-03 19:37:01,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:01,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:01,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:37:01,720 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)] === [2024-06-03 19:37:01,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 345641153, now seen corresponding path program 9 times [2024-06-03 19:37:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510774541] [2024-06-03 19:37:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:02,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510774541] [2024-06-03 19:37:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510774541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:02,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:02,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998999481] [2024-06-03 19:37:02,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:02,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:02,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 205 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:02,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:02,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:02,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:02,878 INFO L124 PetriNetUnfolderBase]: 509/903 cut-off events. [2024-06-03 19:37:02,878 INFO L125 PetriNetUnfolderBase]: For 74966/74966 co-relation queries the response was YES. [2024-06-03 19:37:02,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 903 events. 509/903 cut-off events. For 74966/74966 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4284 event pairs, 79 based on Foata normal form. 3/904 useless extension candidates. Maximal degree in co-relation 6027. Up to 757 conditions per place. [2024-06-03 19:37:02,885 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 45 changer transitions 0/225 dead transitions. [2024-06-03 19:37:02,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 225 transitions, 2440 flow [2024-06-03 19:37:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:37:02,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:37:02,887 INFO L175 Difference]: Start difference. First operand has 215 places, 205 transitions, 1864 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:37:02,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 225 transitions, 2440 flow [2024-06-03 19:37:03,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 225 transitions, 2358 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-03 19:37:03,063 INFO L231 Difference]: Finished difference. Result has 220 places, 209 transitions, 1971 flow [2024-06-03 19:37:03,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=220, PETRI_TRANSITIONS=209} [2024-06-03 19:37:03,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-03 19:37:03,064 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 209 transitions, 1971 flow [2024-06-03 19:37:03,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:03,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:03,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:03,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:37:03,064 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)] === [2024-06-03 19:37:03,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -743665126, now seen corresponding path program 9 times [2024-06-03 19:37:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252488335] [2024-06-03 19:37:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:03,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252488335] [2024-06-03 19:37:03,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252488335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:03,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:03,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:03,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919615090] [2024-06-03 19:37:03,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:03,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:03,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:03,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 209 transitions, 1971 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:03,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:03,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:04,119 INFO L124 PetriNetUnfolderBase]: 513/911 cut-off events. [2024-06-03 19:37:04,120 INFO L125 PetriNetUnfolderBase]: For 74673/74673 co-relation queries the response was YES. [2024-06-03 19:37:04,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 911 events. 513/911 cut-off events. For 74673/74673 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4361 event pairs, 81 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6200. Up to 824 conditions per place. [2024-06-03 19:37:04,127 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 187 selfloop transitions, 33 changer transitions 0/222 dead transitions. [2024-06-03 19:37:04,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 222 transitions, 2605 flow [2024-06-03 19:37:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 19:37:04,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 19:37:04,129 INFO L175 Difference]: Start difference. First operand has 220 places, 209 transitions, 1971 flow. Second operand 10 states and 112 transitions. [2024-06-03 19:37:04,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 222 transitions, 2605 flow [2024-06-03 19:37:04,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 222 transitions, 2463 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:04,326 INFO L231 Difference]: Finished difference. Result has 222 places, 210 transitions, 1925 flow [2024-06-03 19:37:04,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1925, PETRI_PLACES=222, PETRI_TRANSITIONS=210} [2024-06-03 19:37:04,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 19:37:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 210 transitions, 1925 flow [2024-06-03 19:37:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:04,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:04,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:37:04,328 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)] === [2024-06-03 19:37:04,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1997241336, now seen corresponding path program 1 times [2024-06-03 19:37:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530173203] [2024-06-03 19:37:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:05,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530173203] [2024-06-03 19:37:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530173203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272141626] [2024-06-03 19:37:05,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:05,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:05,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:05,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 210 transitions, 1925 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:05,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:05,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:05,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:05,506 INFO L124 PetriNetUnfolderBase]: 509/905 cut-off events. [2024-06-03 19:37:05,506 INFO L125 PetriNetUnfolderBase]: For 71189/71189 co-relation queries the response was YES. [2024-06-03 19:37:05,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6060 conditions, 905 events. 509/905 cut-off events. For 71189/71189 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4314 event pairs, 78 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 5949. Up to 862 conditions per place. [2024-06-03 19:37:05,513 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 17 changer transitions 0/224 dead transitions. [2024-06-03 19:37:05,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 224 transitions, 2431 flow [2024-06-03 19:37:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 19:37:05,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 19:37:05,514 INFO L175 Difference]: Start difference. First operand has 222 places, 210 transitions, 1925 flow. Second operand 10 states and 109 transitions. [2024-06-03 19:37:05,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 224 transitions, 2431 flow [2024-06-03 19:37:05,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 224 transitions, 2320 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:05,687 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 1893 flow [2024-06-03 19:37:05,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1893, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-06-03 19:37:05,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-03 19:37:05,688 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 1893 flow [2024-06-03 19:37:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:05,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:05,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:05,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:37:05,689 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)] === [2024-06-03 19:37:05,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1354601659, now seen corresponding path program 10 times [2024-06-03 19:37:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968379415] [2024-06-03 19:37:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:06,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:06,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968379415] [2024-06-03 19:37:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968379415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:06,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228223297] [2024-06-03 19:37:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:06,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:06,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:06,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:06,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:06,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:06,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 1893 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:06,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:06,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:06,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:06,936 INFO L124 PetriNetUnfolderBase]: 518/920 cut-off events. [2024-06-03 19:37:06,936 INFO L125 PetriNetUnfolderBase]: For 75608/75608 co-relation queries the response was YES. [2024-06-03 19:37:06,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6076 conditions, 920 events. 518/920 cut-off events. For 75608/75608 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 74 based on Foata normal form. 3/921 useless extension candidates. Maximal degree in co-relation 5965. Up to 774 conditions per place. [2024-06-03 19:37:06,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 49 changer transitions 0/230 dead transitions. [2024-06-03 19:37:06,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 230 transitions, 2465 flow [2024-06-03 19:37:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:37:06,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:37:06,946 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 1893 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:37:06,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 230 transitions, 2465 flow [2024-06-03 19:37:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 230 transitions, 2324 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-03 19:37:07,118 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1948 flow [2024-06-03 19:37:07,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1948, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-06-03 19:37:07,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-03 19:37:07,119 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1948 flow [2024-06-03 19:37:07,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:07,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:07,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:07,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:37:07,119 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)] === [2024-06-03 19:37:07,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1354596079, now seen corresponding path program 11 times [2024-06-03 19:37:07,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:07,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948225297] [2024-06-03 19:37:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:07,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:07,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948225297] [2024-06-03 19:37:07,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948225297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:07,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:07,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766299780] [2024-06-03 19:37:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:08,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:08,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 1948 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:08,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:08,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:08,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:08,435 INFO L124 PetriNetUnfolderBase]: 521/925 cut-off events. [2024-06-03 19:37:08,435 INFO L125 PetriNetUnfolderBase]: For 71934/71934 co-relation queries the response was YES. [2024-06-03 19:37:08,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6032 conditions, 925 events. 521/925 cut-off events. For 71934/71934 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4430 event pairs, 74 based on Foata normal form. 1/924 useless extension candidates. Maximal degree in co-relation 5923. Up to 773 conditions per place. [2024-06-03 19:37:08,443 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 53 changer transitions 0/233 dead transitions. [2024-06-03 19:37:08,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 233 transitions, 2480 flow [2024-06-03 19:37:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:37:08,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:37:08,448 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1948 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:37:08,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 233 transitions, 2480 flow [2024-06-03 19:37:08,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 233 transitions, 2324 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:08,609 INFO L231 Difference]: Finished difference. Result has 226 places, 218 transitions, 1947 flow [2024-06-03 19:37:08,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1947, PETRI_PLACES=226, PETRI_TRANSITIONS=218} [2024-06-03 19:37:08,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 19:37:08,611 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 218 transitions, 1947 flow [2024-06-03 19:37:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:08,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:08,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:08,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:37:08,611 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)] === [2024-06-03 19:37:08,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2006445763, now seen corresponding path program 12 times [2024-06-03 19:37:08,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825637238] [2024-06-03 19:37:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:09,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:09,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825637238] [2024-06-03 19:37:09,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825637238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:09,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451127960] [2024-06-03 19:37:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:09,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:09,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:09,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 218 transitions, 1947 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:09,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:09,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:09,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:09,915 INFO L124 PetriNetUnfolderBase]: 530/940 cut-off events. [2024-06-03 19:37:09,915 INFO L125 PetriNetUnfolderBase]: For 79600/79600 co-relation queries the response was YES. [2024-06-03 19:37:09,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 940 events. 530/940 cut-off events. For 79600/79600 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4516 event pairs, 80 based on Foata normal form. 3/941 useless extension candidates. Maximal degree in co-relation 6034. Up to 886 conditions per place. [2024-06-03 19:37:09,923 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2024-06-03 19:37:09,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 236 transitions, 2544 flow [2024-06-03 19:37:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 19:37:09,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 19:37:09,925 INFO L175 Difference]: Start difference. First operand has 226 places, 218 transitions, 1947 flow. Second operand 10 states and 112 transitions. [2024-06-03 19:37:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 236 transitions, 2544 flow [2024-06-03 19:37:10,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 236 transitions, 2425 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:10,135 INFO L231 Difference]: Finished difference. Result has 227 places, 222 transitions, 1976 flow [2024-06-03 19:37:10,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=227, PETRI_TRANSITIONS=222} [2024-06-03 19:37:10,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-03 19:37:10,135 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 222 transitions, 1976 flow [2024-06-03 19:37:10,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:10,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:10,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:37:10,136 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)] === [2024-06-03 19:37:10,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -544215466, now seen corresponding path program 10 times [2024-06-03 19:37:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075943237] [2024-06-03 19:37:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:10,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:10,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075943237] [2024-06-03 19:37:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075943237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:10,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:10,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:10,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941733906] [2024-06-03 19:37:10,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:10,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:10,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:11,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:11,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 222 transitions, 1976 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:11,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:11,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:11,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:11,344 INFO L124 PetriNetUnfolderBase]: 534/948 cut-off events. [2024-06-03 19:37:11,344 INFO L125 PetriNetUnfolderBase]: For 78733/78733 co-relation queries the response was YES. [2024-06-03 19:37:11,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 948 events. 534/948 cut-off events. For 78733/78733 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4580 event pairs, 86 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6044. Up to 915 conditions per place. [2024-06-03 19:37:11,351 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 215 selfloop transitions, 16 changer transitions 0/233 dead transitions. [2024-06-03 19:37:11,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 233 transitions, 2475 flow [2024-06-03 19:37:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:37:11,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 19:37:11,352 INFO L175 Difference]: Start difference. First operand has 227 places, 222 transitions, 1976 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:37:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 233 transitions, 2475 flow [2024-06-03 19:37:11,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 233 transitions, 2363 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:11,546 INFO L231 Difference]: Finished difference. Result has 229 places, 223 transitions, 1917 flow [2024-06-03 19:37:11,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1917, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2024-06-03 19:37:11,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 19:37:11,547 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 1917 flow [2024-06-03 19:37:11,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:11,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:11,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:37:11,547 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)] === [2024-06-03 19:37:11,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2032021023, now seen corresponding path program 13 times [2024-06-03 19:37:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:11,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022489745] [2024-06-03 19:37:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022489745] [2024-06-03 19:37:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022489745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:12,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205040031] [2024-06-03 19:37:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:12,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:12,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:12,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:12,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:12,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:12,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:12,740 INFO L124 PetriNetUnfolderBase]: 543/963 cut-off events. [2024-06-03 19:37:12,740 INFO L125 PetriNetUnfolderBase]: For 83780/83780 co-relation queries the response was YES. [2024-06-03 19:37:12,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6231 conditions, 963 events. 543/963 cut-off events. For 83780/83780 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4668 event pairs, 82 based on Foata normal form. 3/964 useless extension candidates. Maximal degree in co-relation 6119. Up to 872 conditions per place. [2024-06-03 19:37:12,748 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 30 changer transitions 0/245 dead transitions. [2024-06-03 19:37:12,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 245 transitions, 2561 flow [2024-06-03 19:37:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:37:12,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:37:12,750 INFO L175 Difference]: Start difference. First operand has 229 places, 223 transitions, 1917 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:37:12,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 245 transitions, 2561 flow [2024-06-03 19:37:12,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 245 transitions, 2519 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:12,940 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 2049 flow [2024-06-03 19:37:12,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2049, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2024-06-03 19:37:12,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-03 19:37:12,941 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 2049 flow [2024-06-03 19:37:12,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:12,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:12,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:12,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:37:12,941 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)] === [2024-06-03 19:37:12,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:12,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2031813633, now seen corresponding path program 14 times [2024-06-03 19:37:12,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:12,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295130922] [2024-06-03 19:37:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:12,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:13,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295130922] [2024-06-03 19:37:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295130922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:13,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:13,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292219552] [2024-06-03 19:37:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:13,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:13,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:13,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 2049 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:13,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:13,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:13,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:14,074 INFO L124 PetriNetUnfolderBase]: 552/978 cut-off events. [2024-06-03 19:37:14,074 INFO L125 PetriNetUnfolderBase]: For 86592/86592 co-relation queries the response was YES. [2024-06-03 19:37:14,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6464 conditions, 978 events. 552/978 cut-off events. For 86592/86592 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4747 event pairs, 80 based on Foata normal form. 3/979 useless extension candidates. Maximal degree in co-relation 6351. Up to 860 conditions per place. [2024-06-03 19:37:14,082 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 42 changer transitions 0/249 dead transitions. [2024-06-03 19:37:14,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 249 transitions, 2700 flow [2024-06-03 19:37:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:37:14,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:37:14,084 INFO L175 Difference]: Start difference. First operand has 231 places, 227 transitions, 2049 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:37:14,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 249 transitions, 2700 flow [2024-06-03 19:37:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 249 transitions, 2562 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:14,295 INFO L231 Difference]: Finished difference. Result has 234 places, 231 transitions, 2118 flow [2024-06-03 19:37:14,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=234, PETRI_TRANSITIONS=231} [2024-06-03 19:37:14,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 19:37:14,296 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 231 transitions, 2118 flow [2024-06-03 19:37:14,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:14,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:14,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:14,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:37:14,296 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)] === [2024-06-03 19:37:14,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash -743517256, now seen corresponding path program 11 times [2024-06-03 19:37:14,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323716465] [2024-06-03 19:37:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:14,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:14,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323716465] [2024-06-03 19:37:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323716465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:14,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026676235] [2024-06-03 19:37:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:14,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:15,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:15,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 231 transitions, 2118 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:15,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:15,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:15,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:15,296 INFO L124 PetriNetUnfolderBase]: 556/986 cut-off events. [2024-06-03 19:37:15,296 INFO L125 PetriNetUnfolderBase]: For 85298/85298 co-relation queries the response was YES. [2024-06-03 19:37:15,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 986 events. 556/986 cut-off events. For 85298/85298 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4816 event pairs, 90 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 6385. Up to 938 conditions per place. [2024-06-03 19:37:15,306 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 24 changer transitions 0/242 dead transitions. [2024-06-03 19:37:15,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 242 transitions, 2637 flow [2024-06-03 19:37:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 19:37:15,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 19:37:15,307 INFO L175 Difference]: Start difference. First operand has 234 places, 231 transitions, 2118 flow. Second operand 10 states and 109 transitions. [2024-06-03 19:37:15,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 242 transitions, 2637 flow [2024-06-03 19:37:15,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 242 transitions, 2468 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:15,539 INFO L231 Difference]: Finished difference. Result has 235 places, 232 transitions, 2020 flow [2024-06-03 19:37:15,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2020, PETRI_PLACES=235, PETRI_TRANSITIONS=232} [2024-06-03 19:37:15,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-03 19:37:15,539 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 232 transitions, 2020 flow [2024-06-03 19:37:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:15,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:15,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:15,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:37:15,540 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)] === [2024-06-03 19:37:15,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -738149141, now seen corresponding path program 15 times [2024-06-03 19:37:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:15,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750592722] [2024-06-03 19:37:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:16,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:16,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750592722] [2024-06-03 19:37:16,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750592722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:16,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:16,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071273543] [2024-06-03 19:37:16,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:16,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:16,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:16,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:16,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:16,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 232 transitions, 2020 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:16,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:16,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:16,674 INFO L124 PetriNetUnfolderBase]: 565/1001 cut-off events. [2024-06-03 19:37:16,674 INFO L125 PetriNetUnfolderBase]: For 90685/90685 co-relation queries the response was YES. [2024-06-03 19:37:16,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 1001 events. 565/1001 cut-off events. For 90685/90685 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4930 event pairs, 78 based on Foata normal form. 3/1002 useless extension candidates. Maximal degree in co-relation 6426. Up to 855 conditions per place. [2024-06-03 19:37:16,684 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 44 changer transitions 0/254 dead transitions. [2024-06-03 19:37:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 254 transitions, 2693 flow [2024-06-03 19:37:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:37:16,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:37:16,685 INFO L175 Difference]: Start difference. First operand has 235 places, 232 transitions, 2020 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:37:16,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 254 transitions, 2693 flow [2024-06-03 19:37:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 254 transitions, 2633 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:16,925 INFO L231 Difference]: Finished difference. Result has 237 places, 236 transitions, 2178 flow [2024-06-03 19:37:16,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2178, PETRI_PLACES=237, PETRI_TRANSITIONS=236} [2024-06-03 19:37:16,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-03 19:37:16,925 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 236 transitions, 2178 flow [2024-06-03 19:37:16,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:16,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:16,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:37:16,926 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)] === [2024-06-03 19:37:16,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash -738154876, now seen corresponding path program 12 times [2024-06-03 19:37:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064933121] [2024-06-03 19:37:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:17,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064933121] [2024-06-03 19:37:17,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064933121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:17,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:17,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481418713] [2024-06-03 19:37:17,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:17,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:17,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 236 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:17,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:17,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:17,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:18,205 INFO L124 PetriNetUnfolderBase]: 562/996 cut-off events. [2024-06-03 19:37:18,206 INFO L125 PetriNetUnfolderBase]: For 83176/83176 co-relation queries the response was YES. [2024-06-03 19:37:18,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 996 events. 562/996 cut-off events. For 83176/83176 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4876 event pairs, 91 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6328. Up to 948 conditions per place. [2024-06-03 19:37:18,214 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 221 selfloop transitions, 23 changer transitions 0/246 dead transitions. [2024-06-03 19:37:18,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 246 transitions, 2688 flow [2024-06-03 19:37:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 19:37:18,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:37:18,215 INFO L175 Difference]: Start difference. First operand has 237 places, 236 transitions, 2178 flow. Second operand 10 states and 110 transitions. [2024-06-03 19:37:18,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 246 transitions, 2688 flow [2024-06-03 19:37:18,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 246 transitions, 2496 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:18,455 INFO L231 Difference]: Finished difference. Result has 239 places, 236 transitions, 2036 flow [2024-06-03 19:37:18,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2036, PETRI_PLACES=239, PETRI_TRANSITIONS=236} [2024-06-03 19:37:18,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-03 19:37:18,456 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 236 transitions, 2036 flow [2024-06-03 19:37:18,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:18,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:18,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:37:18,457 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)] === [2024-06-03 19:37:18,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash -738154721, now seen corresponding path program 16 times [2024-06-03 19:37:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:18,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618682839] [2024-06-03 19:37:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:18,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:19,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:19,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618682839] [2024-06-03 19:37:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618682839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140160424] [2024-06-03 19:37:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:19,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:19,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:19,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 236 transitions, 2036 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:19,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:19,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:19,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:19,781 INFO L124 PetriNetUnfolderBase]: 560/993 cut-off events. [2024-06-03 19:37:19,781 INFO L125 PetriNetUnfolderBase]: For 77371/77371 co-relation queries the response was YES. [2024-06-03 19:37:19,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 993 events. 560/993 cut-off events. For 77371/77371 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4882 event pairs, 77 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 6044. Up to 830 conditions per place. [2024-06-03 19:37:19,789 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 202 selfloop transitions, 52 changer transitions 0/256 dead transitions. [2024-06-03 19:37:19,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 2603 flow [2024-06-03 19:37:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:37:19,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-03 19:37:19,790 INFO L175 Difference]: Start difference. First operand has 239 places, 236 transitions, 2036 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:37:19,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 2603 flow [2024-06-03 19:37:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 256 transitions, 2529 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:20,001 INFO L231 Difference]: Finished difference. Result has 241 places, 236 transitions, 2077 flow [2024-06-03 19:37:20,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2077, PETRI_PLACES=241, PETRI_TRANSITIONS=236} [2024-06-03 19:37:20,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-03 19:37:20,002 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 236 transitions, 2077 flow [2024-06-03 19:37:20,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:20,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:20,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:37:20,003 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)] === [2024-06-03 19:37:20,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 149294584, now seen corresponding path program 13 times [2024-06-03 19:37:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231165549] [2024-06-03 19:37:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:20,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231165549] [2024-06-03 19:37:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231165549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:20,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97042804] [2024-06-03 19:37:20,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:20,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:20,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 236 transitions, 2077 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:21,393 INFO L124 PetriNetUnfolderBase]: 597/1057 cut-off events. [2024-06-03 19:37:21,393 INFO L125 PetriNetUnfolderBase]: For 89622/89626 co-relation queries the response was YES. [2024-06-03 19:37:21,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6565 conditions, 1057 events. 597/1057 cut-off events. For 89622/89626 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5271 event pairs, 74 based on Foata normal form. 6/1061 useless extension candidates. Maximal degree in co-relation 6447. Up to 967 conditions per place. [2024-06-03 19:37:21,402 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 236 selfloop transitions, 40 changer transitions 0/278 dead transitions. [2024-06-03 19:37:21,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 278 transitions, 2877 flow [2024-06-03 19:37:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-03 19:37:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-03 19:37:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-06-03 19:37:21,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33705357142857145 [2024-06-03 19:37:21,404 INFO L175 Difference]: Start difference. First operand has 241 places, 236 transitions, 2077 flow. Second operand 14 states and 151 transitions. [2024-06-03 19:37:21,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 278 transitions, 2877 flow [2024-06-03 19:37:21,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 278 transitions, 2736 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 19:37:21,668 INFO L231 Difference]: Finished difference. Result has 250 places, 257 transitions, 2277 flow [2024-06-03 19:37:21,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2277, PETRI_PLACES=250, PETRI_TRANSITIONS=257} [2024-06-03 19:37:21,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-03 19:37:21,669 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 257 transitions, 2277 flow [2024-06-03 19:37:21,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:21,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:21,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:21,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:37:21,670 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)] === [2024-06-03 19:37:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 90817028, now seen corresponding path program 14 times [2024-06-03 19:37:21,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:21,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577967013] [2024-06-03 19:37:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:21,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577967013] [2024-06-03 19:37:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577967013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135578223] [2024-06-03 19:37:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:22,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:22,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:22,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 257 transitions, 2277 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:22,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:22,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:22,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:23,151 INFO L124 PetriNetUnfolderBase]: 608/1078 cut-off events. [2024-06-03 19:37:23,151 INFO L125 PetriNetUnfolderBase]: For 84818/84818 co-relation queries the response was YES. [2024-06-03 19:37:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 1078 events. 608/1078 cut-off events. For 84818/84818 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5412 event pairs, 77 based on Foata normal form. 4/1080 useless extension candidates. Maximal degree in co-relation 6424. Up to 999 conditions per place. [2024-06-03 19:37:23,161 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 35 changer transitions 0/285 dead transitions. [2024-06-03 19:37:23,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 285 transitions, 2992 flow [2024-06-03 19:37:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:37:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:37:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-03 19:37:23,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389423076923077 [2024-06-03 19:37:23,162 INFO L175 Difference]: Start difference. First operand has 250 places, 257 transitions, 2277 flow. Second operand 13 states and 141 transitions. [2024-06-03 19:37:23,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 285 transitions, 2992 flow [2024-06-03 19:37:23,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 285 transitions, 2893 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-03 19:37:23,384 INFO L231 Difference]: Finished difference. Result has 263 places, 267 transitions, 2408 flow [2024-06-03 19:37:23,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2408, PETRI_PLACES=263, PETRI_TRANSITIONS=267} [2024-06-03 19:37:23,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:37:23,385 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 267 transitions, 2408 flow [2024-06-03 19:37:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-03 19:37:23,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:23,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:23,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:37:23,386 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)] === [2024-06-03 19:37:23,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:23,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1811947272, now seen corresponding path program 15 times [2024-06-03 19:37:23,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:23,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510375987] [2024-06-03 19:37:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:23,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510375987] [2024-06-03 19:37:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510375987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:24,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:24,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:24,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365324107] [2024-06-03 19:37:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:24,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:24,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:24,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 267 transitions, 2408 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-03 19:37:24,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:24,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:24,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:24,641 INFO L124 PetriNetUnfolderBase]: 605/1074 cut-off events. [2024-06-03 19:37:24,642 INFO L125 PetriNetUnfolderBase]: For 72390/72390 co-relation queries the response was YES. [2024-06-03 19:37:24,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6405 conditions, 1074 events. 605/1074 cut-off events. For 72390/72390 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5377 event pairs, 74 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 6276. Up to 924 conditions per place. [2024-06-03 19:37:24,650 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 222 selfloop transitions, 61 changer transitions 0/285 dead transitions. [2024-06-03 19:37:24,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 285 transitions, 3035 flow [2024-06-03 19:37:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 19:37:24,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 19:37:24,651 INFO L175 Difference]: Start difference. First operand has 263 places, 267 transitions, 2408 flow. Second operand 11 states and 128 transitions. [2024-06-03 19:37:24,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 285 transitions, 3035 flow [2024-06-03 19:37:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 285 transitions, 2892 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:24,878 INFO L231 Difference]: Finished difference. Result has 266 places, 269 transitions, 2431 flow [2024-06-03 19:37:24,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2431, PETRI_PLACES=266, PETRI_TRANSITIONS=269} [2024-06-03 19:37:24,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-03 19:37:24,879 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 269 transitions, 2431 flow [2024-06-03 19:37:24,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-03 19:37:24,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:24,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:24,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:37:24,880 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)] === [2024-06-03 19:37:24,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1196563825, now seen corresponding path program 1 times [2024-06-03 19:37:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316749037] [2024-06-03 19:37:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:24,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316749037] [2024-06-03 19:37:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316749037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:25,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:25,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:25,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66639760] [2024-06-03 19:37:25,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:25,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:25,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 269 transitions, 2431 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:25,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:25,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:25,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:26,166 INFO L124 PetriNetUnfolderBase]: 616/1094 cut-off events. [2024-06-03 19:37:26,167 INFO L125 PetriNetUnfolderBase]: For 81295/81295 co-relation queries the response was YES. [2024-06-03 19:37:26,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 1094 events. 616/1094 cut-off events. For 81295/81295 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5517 event pairs, 57 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6526. Up to 753 conditions per place. [2024-06-03 19:37:26,177 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 54 changer transitions 0/295 dead transitions. [2024-06-03 19:37:26,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 295 transitions, 3266 flow [2024-06-03 19:37:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:37:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:37:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 19:37:26,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:37:26,178 INFO L175 Difference]: Start difference. First operand has 266 places, 269 transitions, 2431 flow. Second operand 12 states and 141 transitions. [2024-06-03 19:37:26,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 295 transitions, 3266 flow [2024-06-03 19:37:26,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 295 transitions, 3058 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-03 19:37:26,412 INFO L231 Difference]: Finished difference. Result has 270 places, 273 transitions, 2414 flow [2024-06-03 19:37:26,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2414, PETRI_PLACES=270, PETRI_TRANSITIONS=273} [2024-06-03 19:37:26,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-03 19:37:26,412 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 273 transitions, 2414 flow [2024-06-03 19:37:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:26,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:26,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:37:26,413 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)] === [2024-06-03 19:37:26,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1254656275, now seen corresponding path program 2 times [2024-06-03 19:37:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:26,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698542833] [2024-06-03 19:37:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:27,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:27,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698542833] [2024-06-03 19:37:27,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698542833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:27,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:27,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831890022] [2024-06-03 19:37:27,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:27,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:27,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 273 transitions, 2414 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:27,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:27,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:27,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:27,843 INFO L124 PetriNetUnfolderBase]: 656/1174 cut-off events. [2024-06-03 19:37:27,843 INFO L125 PetriNetUnfolderBase]: For 124716/124716 co-relation queries the response was YES. [2024-06-03 19:37:27,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8071 conditions, 1174 events. 656/1174 cut-off events. For 124716/124716 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5994 event pairs, 79 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 7944. Up to 786 conditions per place. [2024-06-03 19:37:27,854 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 62 changer transitions 0/302 dead transitions. [2024-06-03 19:37:27,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 302 transitions, 3336 flow [2024-06-03 19:37:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:37:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:37:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 19:37:27,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 19:37:27,855 INFO L175 Difference]: Start difference. First operand has 270 places, 273 transitions, 2414 flow. Second operand 12 states and 149 transitions. [2024-06-03 19:37:27,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 302 transitions, 3336 flow [2024-06-03 19:37:28,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 302 transitions, 3295 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:28,157 INFO L231 Difference]: Finished difference. Result has 276 places, 274 transitions, 2512 flow [2024-06-03 19:37:28,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2512, PETRI_PLACES=276, PETRI_TRANSITIONS=274} [2024-06-03 19:37:28,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-03 19:37:28,158 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 274 transitions, 2512 flow [2024-06-03 19:37:28,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:28,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:28,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:37:28,158 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)] === [2024-06-03 19:37:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1254771595, now seen corresponding path program 3 times [2024-06-03 19:37:28,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:28,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483801502] [2024-06-03 19:37:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:28,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483801502] [2024-06-03 19:37:28,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483801502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:28,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:28,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:28,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076324019] [2024-06-03 19:37:28,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:28,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:28,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:29,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:29,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 274 transitions, 2512 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:29,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:29,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:29,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:29,523 INFO L124 PetriNetUnfolderBase]: 670/1200 cut-off events. [2024-06-03 19:37:29,523 INFO L125 PetriNetUnfolderBase]: For 135568/135568 co-relation queries the response was YES. [2024-06-03 19:37:29,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8476 conditions, 1200 events. 670/1200 cut-off events. For 135568/135568 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6208 event pairs, 93 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 8347. Up to 987 conditions per place. [2024-06-03 19:37:29,534 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 65 changer transitions 0/298 dead transitions. [2024-06-03 19:37:29,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 298 transitions, 3360 flow [2024-06-03 19:37:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:37:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:37:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 19:37:29,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 19:37:29,535 INFO L175 Difference]: Start difference. First operand has 276 places, 274 transitions, 2512 flow. Second operand 12 states and 141 transitions. [2024-06-03 19:37:29,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 298 transitions, 3360 flow [2024-06-03 19:37:29,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 298 transitions, 3256 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:29,934 INFO L231 Difference]: Finished difference. Result has 279 places, 278 transitions, 2581 flow [2024-06-03 19:37:29,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2581, PETRI_PLACES=279, PETRI_TRANSITIONS=278} [2024-06-03 19:37:29,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-03 19:37:29,934 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 278 transitions, 2581 flow [2024-06-03 19:37:29,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:29,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:29,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:29,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:37:29,935 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)] === [2024-06-03 19:37:29,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1254776431, now seen corresponding path program 1 times [2024-06-03 19:37:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:29,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625835864] [2024-06-03 19:37:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625835864] [2024-06-03 19:37:30,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625835864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:30,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:30,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332477175] [2024-06-03 19:37:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:30,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:30,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:30,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:30,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 278 transitions, 2581 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:30,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:30,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:30,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:31,274 INFO L124 PetriNetUnfolderBase]: 686/1226 cut-off events. [2024-06-03 19:37:31,275 INFO L125 PetriNetUnfolderBase]: For 147819/147819 co-relation queries the response was YES. [2024-06-03 19:37:31,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1226 events. 686/1226 cut-off events. For 147819/147819 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6382 event pairs, 93 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 8897. Up to 1037 conditions per place. [2024-06-03 19:37:31,287 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 69 changer transitions 0/303 dead transitions. [2024-06-03 19:37:31,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 303 transitions, 3545 flow [2024-06-03 19:37:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:37:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:37:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 19:37:31,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:37:31,297 INFO L175 Difference]: Start difference. First operand has 279 places, 278 transitions, 2581 flow. Second operand 12 states and 144 transitions. [2024-06-03 19:37:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 303 transitions, 3545 flow [2024-06-03 19:37:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 303 transitions, 3460 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:31,680 INFO L231 Difference]: Finished difference. Result has 284 places, 282 transitions, 2779 flow [2024-06-03 19:37:31,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2779, PETRI_PLACES=284, PETRI_TRANSITIONS=282} [2024-06-03 19:37:31,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-03 19:37:31,681 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 282 transitions, 2779 flow [2024-06-03 19:37:31,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:31,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:31,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:31,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:37:31,682 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)] === [2024-06-03 19:37:31,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1254776245, now seen corresponding path program 4 times [2024-06-03 19:37:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222042247] [2024-06-03 19:37:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:32,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222042247] [2024-06-03 19:37:32,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222042247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485833331] [2024-06-03 19:37:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:32,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:32,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:32,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 282 transitions, 2779 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:32,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:32,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:33,368 INFO L124 PetriNetUnfolderBase]: 671/1201 cut-off events. [2024-06-03 19:37:33,368 INFO L125 PetriNetUnfolderBase]: For 151325/151325 co-relation queries the response was YES. [2024-06-03 19:37:33,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7833 conditions, 1201 events. 671/1201 cut-off events. For 151325/151325 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6250 event pairs, 80 based on Foata normal form. 16/1215 useless extension candidates. Maximal degree in co-relation 7701. Up to 963 conditions per place. [2024-06-03 19:37:33,377 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 79 changer transitions 12/310 dead transitions. [2024-06-03 19:37:33,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 310 transitions, 3546 flow [2024-06-03 19:37:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-03 19:37:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-03 19:37:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-03 19:37:33,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-03 19:37:33,378 INFO L175 Difference]: Start difference. First operand has 284 places, 282 transitions, 2779 flow. Second operand 14 states and 160 transitions. [2024-06-03 19:37:33,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 310 transitions, 3546 flow [2024-06-03 19:37:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 310 transitions, 3399 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:33,696 INFO L231 Difference]: Finished difference. Result has 290 places, 278 transitions, 2767 flow [2024-06-03 19:37:33,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2767, PETRI_PLACES=290, PETRI_TRANSITIONS=278} [2024-06-03 19:37:33,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-03 19:37:33,697 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 278 transitions, 2767 flow [2024-06-03 19:37:33,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:33,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:33,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:33,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:37:33,697 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)] === [2024-06-03 19:37:33,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1226490271, now seen corresponding path program 5 times [2024-06-03 19:37:33,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:33,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036054363] [2024-06-03 19:37:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:33,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:34,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036054363] [2024-06-03 19:37:34,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036054363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:34,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:34,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:34,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602788999] [2024-06-03 19:37:34,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:34,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:34,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:34,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:34,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:34,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 278 transitions, 2767 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:34,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:34,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:34,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:35,393 INFO L124 PetriNetUnfolderBase]: 634/1130 cut-off events. [2024-06-03 19:37:35,393 INFO L125 PetriNetUnfolderBase]: For 91099/91099 co-relation queries the response was YES. [2024-06-03 19:37:35,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 1130 events. 634/1130 cut-off events. For 91099/91099 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5806 event pairs, 78 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 7182. Up to 978 conditions per place. [2024-06-03 19:37:35,404 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 247 selfloop transitions, 46 changer transitions 0/295 dead transitions. [2024-06-03 19:37:35,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 295 transitions, 3393 flow [2024-06-03 19:37:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:37:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:37:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 19:37:35,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:37:35,406 INFO L175 Difference]: Start difference. First operand has 290 places, 278 transitions, 2767 flow. Second operand 12 states and 132 transitions. [2024-06-03 19:37:35,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 295 transitions, 3393 flow [2024-06-03 19:37:35,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 295 transitions, 3158 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-03 19:37:35,671 INFO L231 Difference]: Finished difference. Result has 287 places, 278 transitions, 2630 flow [2024-06-03 19:37:35,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2630, PETRI_PLACES=287, PETRI_TRANSITIONS=278} [2024-06-03 19:37:35,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-03 19:37:35,672 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 278 transitions, 2630 flow [2024-06-03 19:37:35,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:35,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:35,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:37:35,673 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)] === [2024-06-03 19:37:35,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1331562055, now seen corresponding path program 2 times [2024-06-03 19:37:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270270469] [2024-06-03 19:37:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:35,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270270469] [2024-06-03 19:37:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270270469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:36,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721369586] [2024-06-03 19:37:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:36,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:36,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:36,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 278 transitions, 2630 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:36,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:36,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:36,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:37,234 INFO L124 PetriNetUnfolderBase]: 643/1145 cut-off events. [2024-06-03 19:37:37,234 INFO L125 PetriNetUnfolderBase]: For 93659/93659 co-relation queries the response was YES. [2024-06-03 19:37:37,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7298 conditions, 1145 events. 643/1145 cut-off events. For 93659/93659 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5915 event pairs, 81 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 7164. Up to 1023 conditions per place. [2024-06-03 19:37:37,247 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-03 19:37:37,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 299 transitions, 3532 flow [2024-06-03 19:37:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 19:37:37,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 19:37:37,248 INFO L175 Difference]: Start difference. First operand has 287 places, 278 transitions, 2630 flow. Second operand 11 states and 128 transitions. [2024-06-03 19:37:37,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 299 transitions, 3532 flow [2024-06-03 19:37:37,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 299 transitions, 3375 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:37:37,527 INFO L231 Difference]: Finished difference. Result has 288 places, 282 transitions, 2663 flow [2024-06-03 19:37:37,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2663, PETRI_PLACES=288, PETRI_TRANSITIONS=282} [2024-06-03 19:37:37,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-03 19:37:37,528 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 282 transitions, 2663 flow [2024-06-03 19:37:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:37,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:37,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:37,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:37:37,528 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)] === [2024-06-03 19:37:37,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 198051011, now seen corresponding path program 3 times [2024-06-03 19:37:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780400769] [2024-06-03 19:37:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:38,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780400769] [2024-06-03 19:37:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780400769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:38,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:38,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395489007] [2024-06-03 19:37:38,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:38,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:38,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:38,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 282 transitions, 2663 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:38,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:38,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:38,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:39,046 INFO L124 PetriNetUnfolderBase]: 652/1160 cut-off events. [2024-06-03 19:37:39,047 INFO L125 PetriNetUnfolderBase]: For 96502/96502 co-relation queries the response was YES. [2024-06-03 19:37:39,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1160 events. 652/1160 cut-off events. For 96502/96502 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5984 event pairs, 83 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 7232. Up to 1062 conditions per place. [2024-06-03 19:37:39,056 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 40 changer transitions 0/303 dead transitions. [2024-06-03 19:37:39,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 303 transitions, 3577 flow [2024-06-03 19:37:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 19:37:39,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-03 19:37:39,058 INFO L175 Difference]: Start difference. First operand has 288 places, 282 transitions, 2663 flow. Second operand 11 states and 126 transitions. [2024-06-03 19:37:39,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 303 transitions, 3577 flow [2024-06-03 19:37:39,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 303 transitions, 3385 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:39,324 INFO L231 Difference]: Finished difference. Result has 291 places, 286 transitions, 2651 flow [2024-06-03 19:37:39,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2651, PETRI_PLACES=291, PETRI_TRANSITIONS=286} [2024-06-03 19:37:39,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-03 19:37:39,325 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 286 transitions, 2651 flow [2024-06-03 19:37:39,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:39,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:39,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:37:39,325 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)] === [2024-06-03 19:37:39,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1336203685, now seen corresponding path program 4 times [2024-06-03 19:37:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:39,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977324240] [2024-06-03 19:37:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:40,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:40,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977324240] [2024-06-03 19:37:40,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977324240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:40,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:40,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880466805] [2024-06-03 19:37:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:40,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:40,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 286 transitions, 2651 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:40,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:40,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:40,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:40,897 INFO L124 PetriNetUnfolderBase]: 648/1154 cut-off events. [2024-06-03 19:37:40,897 INFO L125 PetriNetUnfolderBase]: For 89011/89011 co-relation queries the response was YES. [2024-06-03 19:37:40,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 1154 events. 648/1154 cut-off events. For 89011/89011 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5961 event pairs, 82 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 6881. Up to 1081 conditions per place. [2024-06-03 19:37:40,908 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 34 changer transitions 0/301 dead transitions. [2024-06-03 19:37:40,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 301 transitions, 3285 flow [2024-06-03 19:37:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:40,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 19:37:40,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:37:40,909 INFO L175 Difference]: Start difference. First operand has 291 places, 286 transitions, 2651 flow. Second operand 11 states and 121 transitions. [2024-06-03 19:37:40,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 301 transitions, 3285 flow [2024-06-03 19:37:41,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 301 transitions, 3096 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:41,197 INFO L231 Difference]: Finished difference. Result has 294 places, 286 transitions, 2535 flow [2024-06-03 19:37:41,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2535, PETRI_PLACES=294, PETRI_TRANSITIONS=286} [2024-06-03 19:37:41,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-03 19:37:41,211 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 286 transitions, 2535 flow [2024-06-03 19:37:41,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:41,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:41,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:41,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:37:41,212 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)] === [2024-06-03 19:37:41,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:41,212 INFO L85 PathProgramCache]: Analyzing trace with hash 627929159, now seen corresponding path program 5 times [2024-06-03 19:37:41,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:41,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718396882] [2024-06-03 19:37:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:41,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:42,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:42,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718396882] [2024-06-03 19:37:42,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718396882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:42,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:42,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462252366] [2024-06-03 19:37:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:42,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:42,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 286 transitions, 2535 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:42,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:42,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:42,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:42,634 INFO L124 PetriNetUnfolderBase]: 664/1180 cut-off events. [2024-06-03 19:37:42,635 INFO L125 PetriNetUnfolderBase]: For 99749/99749 co-relation queries the response was YES. [2024-06-03 19:37:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 1180 events. 664/1180 cut-off events. For 99749/99749 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6128 event pairs, 61 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 7218. Up to 869 conditions per place. [2024-06-03 19:37:42,646 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 88 changer transitions 0/310 dead transitions. [2024-06-03 19:37:42,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 310 transitions, 3526 flow [2024-06-03 19:37:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-03 19:37:42,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-03 19:37:42,648 INFO L175 Difference]: Start difference. First operand has 294 places, 286 transitions, 2535 flow. Second operand 11 states and 142 transitions. [2024-06-03 19:37:42,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 310 transitions, 3526 flow [2024-06-03 19:37:42,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 3354 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-03 19:37:42,983 INFO L231 Difference]: Finished difference. Result has 291 places, 290 transitions, 2688 flow [2024-06-03 19:37:42,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2688, PETRI_PLACES=291, PETRI_TRANSITIONS=290} [2024-06-03 19:37:42,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-03 19:37:42,983 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 290 transitions, 2688 flow [2024-06-03 19:37:42,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:42,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:42,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:42,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:37:42,984 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)] === [2024-06-03 19:37:42,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1056377837, now seen corresponding path program 6 times [2024-06-03 19:37:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373452243] [2024-06-03 19:37:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:43,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373452243] [2024-06-03 19:37:43,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373452243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:43,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609095141] [2024-06-03 19:37:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:43,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:43,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:43,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 290 transitions, 2688 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:43,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:43,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:43,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:44,086 INFO L124 PetriNetUnfolderBase]: 668/1188 cut-off events. [2024-06-03 19:37:44,086 INFO L125 PetriNetUnfolderBase]: For 102268/102268 co-relation queries the response was YES. [2024-06-03 19:37:44,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7429 conditions, 1188 events. 668/1188 cut-off events. For 102268/102268 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6190 event pairs, 83 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 7294. Up to 1020 conditions per place. [2024-06-03 19:37:44,096 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 61 changer transitions 0/305 dead transitions. [2024-06-03 19:37:44,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 305 transitions, 3339 flow [2024-06-03 19:37:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:37:44,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:37:44,097 INFO L175 Difference]: Start difference. First operand has 291 places, 290 transitions, 2688 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:37:44,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 305 transitions, 3339 flow [2024-06-03 19:37:44,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 305 transitions, 3166 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:44,389 INFO L231 Difference]: Finished difference. Result has 295 places, 292 transitions, 2658 flow [2024-06-03 19:37:44,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2658, PETRI_PLACES=295, PETRI_TRANSITIONS=292} [2024-06-03 19:37:44,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-03 19:37:44,400 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 292 transitions, 2658 flow [2024-06-03 19:37:44,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:44,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:44,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:44,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:37:44,401 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)] === [2024-06-03 19:37:44,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash 461690543, now seen corresponding path program 7 times [2024-06-03 19:37:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149196724] [2024-06-03 19:37:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:45,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:45,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149196724] [2024-06-03 19:37:45,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149196724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:45,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:45,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136983090] [2024-06-03 19:37:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:45,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:45,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:45,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:45,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 292 transitions, 2658 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:45,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:45,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:45,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:45,661 INFO L124 PetriNetUnfolderBase]: 719/1289 cut-off events. [2024-06-03 19:37:45,661 INFO L125 PetriNetUnfolderBase]: For 166766/166766 co-relation queries the response was YES. [2024-06-03 19:37:45,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9283 conditions, 1289 events. 719/1289 cut-off events. For 166766/166766 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6826 event pairs, 78 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9146. Up to 923 conditions per place. [2024-06-03 19:37:45,675 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 77 changer transitions 0/320 dead transitions. [2024-06-03 19:37:45,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 320 transitions, 3649 flow [2024-06-03 19:37:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-03 19:37:45,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-03 19:37:45,676 INFO L175 Difference]: Start difference. First operand has 295 places, 292 transitions, 2658 flow. Second operand 11 states and 149 transitions. [2024-06-03 19:37:45,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 320 transitions, 3649 flow [2024-06-03 19:37:46,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 320 transitions, 3551 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:46,164 INFO L231 Difference]: Finished difference. Result has 301 places, 295 transitions, 2757 flow [2024-06-03 19:37:46,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2757, PETRI_PLACES=301, PETRI_TRANSITIONS=295} [2024-06-03 19:37:46,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-03 19:37:46,180 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 295 transitions, 2757 flow [2024-06-03 19:37:46,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:46,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:46,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:46,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:37:46,181 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)] === [2024-06-03 19:37:46,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 634358249, now seen corresponding path program 6 times [2024-06-03 19:37:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058775483] [2024-06-03 19:37:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:47,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058775483] [2024-06-03 19:37:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058775483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:47,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:47,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:47,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147098024] [2024-06-03 19:37:47,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:47,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:47,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:47,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 295 transitions, 2757 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:47,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:47,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:47,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:47,587 INFO L124 PetriNetUnfolderBase]: 725/1299 cut-off events. [2024-06-03 19:37:47,587 INFO L125 PetriNetUnfolderBase]: For 171089/171089 co-relation queries the response was YES. [2024-06-03 19:37:47,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9503 conditions, 1299 events. 725/1299 cut-off events. For 171089/171089 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6879 event pairs, 78 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 9364. Up to 1016 conditions per place. [2024-06-03 19:37:47,600 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 85 changer transitions 0/316 dead transitions. [2024-06-03 19:37:47,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 316 transitions, 3495 flow [2024-06-03 19:37:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 19:37:47,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 19:37:47,601 INFO L175 Difference]: Start difference. First operand has 301 places, 295 transitions, 2757 flow. Second operand 11 states and 139 transitions. [2024-06-03 19:37:47,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 316 transitions, 3495 flow [2024-06-03 19:37:48,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 316 transitions, 3390 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:48,161 INFO L231 Difference]: Finished difference. Result has 305 places, 297 transitions, 2895 flow [2024-06-03 19:37:48,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2895, PETRI_PLACES=305, PETRI_TRANSITIONS=297} [2024-06-03 19:37:48,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-03 19:37:48,164 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 297 transitions, 2895 flow [2024-06-03 19:37:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:48,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:48,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:48,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:37:48,164 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)] === [2024-06-03 19:37:48,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash 457226543, now seen corresponding path program 8 times [2024-06-03 19:37:48,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:48,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409729254] [2024-06-03 19:37:48,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:49,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409729254] [2024-06-03 19:37:49,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409729254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:49,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:49,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:49,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998229255] [2024-06-03 19:37:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:49,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:49,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:49,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:49,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 297 transitions, 2895 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:49,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:49,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:49,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:49,672 INFO L124 PetriNetUnfolderBase]: 710/1274 cut-off events. [2024-06-03 19:37:49,673 INFO L125 PetriNetUnfolderBase]: For 174320/174320 co-relation queries the response was YES. [2024-06-03 19:37:49,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 1274 events. 710/1274 cut-off events. For 174320/174320 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6800 event pairs, 69 based on Foata normal form. 16/1288 useless extension candidates. Maximal degree in co-relation 8052. Up to 910 conditions per place. [2024-06-03 19:37:49,686 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 91 changer transitions 12/324 dead transitions. [2024-06-03 19:37:49,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 324 transitions, 3691 flow [2024-06-03 19:37:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:37:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:37:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-03 19:37:49,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-03 19:37:49,688 INFO L175 Difference]: Start difference. First operand has 305 places, 297 transitions, 2895 flow. Second operand 13 states and 167 transitions. [2024-06-03 19:37:49,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 324 transitions, 3691 flow [2024-06-03 19:37:50,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 324 transitions, 3466 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:50,070 INFO L231 Difference]: Finished difference. Result has 309 places, 293 transitions, 2831 flow [2024-06-03 19:37:50,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2831, PETRI_PLACES=309, PETRI_TRANSITIONS=293} [2024-06-03 19:37:50,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 19:37:50,071 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 293 transitions, 2831 flow [2024-06-03 19:37:50,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:50,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:50,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:37:50,071 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)] === [2024-06-03 19:37:50,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 634604327, now seen corresponding path program 1 times [2024-06-03 19:37:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191570128] [2024-06-03 19:37:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:51,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191570128] [2024-06-03 19:37:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191570128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:51,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:51,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:51,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182173779] [2024-06-03 19:37:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:51,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:51,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:51,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 293 transitions, 2831 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:51,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:51,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:51,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:51,457 INFO L124 PetriNetUnfolderBase]: 680/1216 cut-off events. [2024-06-03 19:37:51,457 INFO L125 PetriNetUnfolderBase]: For 110177/110177 co-relation queries the response was YES. [2024-06-03 19:37:51,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1216 events. 680/1216 cut-off events. For 110177/110177 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6456 event pairs, 86 based on Foata normal form. 2/1216 useless extension candidates. Maximal degree in co-relation 7680. Up to 1125 conditions per place. [2024-06-03 19:37:51,471 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 272 selfloop transitions, 34 changer transitions 0/308 dead transitions. [2024-06-03 19:37:51,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 308 transitions, 3481 flow [2024-06-03 19:37:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:37:51,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:37:51,472 INFO L175 Difference]: Start difference. First operand has 309 places, 293 transitions, 2831 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:37:51,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 308 transitions, 3481 flow [2024-06-03 19:37:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 308 transitions, 3258 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-03 19:37:51,826 INFO L231 Difference]: Finished difference. Result has 306 places, 294 transitions, 2688 flow [2024-06-03 19:37:51,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2688, PETRI_PLACES=306, PETRI_TRANSITIONS=294} [2024-06-03 19:37:51,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 19:37:51,827 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 294 transitions, 2688 flow [2024-06-03 19:37:51,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:51,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:51,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:37:51,828 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)] === [2024-06-03 19:37:51,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1049948747, now seen corresponding path program 9 times [2024-06-03 19:37:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041014361] [2024-06-03 19:37:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:52,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041014361] [2024-06-03 19:37:52,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041014361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:52,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:52,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490362711] [2024-06-03 19:37:52,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:52,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:52,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:52,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 294 transitions, 2688 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:52,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:52,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:52,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:53,210 INFO L124 PetriNetUnfolderBase]: 704/1268 cut-off events. [2024-06-03 19:37:53,210 INFO L125 PetriNetUnfolderBase]: For 170522/170522 co-relation queries the response was YES. [2024-06-03 19:37:53,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 1268 events. 704/1268 cut-off events. For 170522/170522 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6784 event pairs, 71 based on Foata normal form. 14/1280 useless extension candidates. Maximal degree in co-relation 7831. Up to 961 conditions per place. [2024-06-03 19:37:53,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 73 changer transitions 13/318 dead transitions. [2024-06-03 19:37:53,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 318 transitions, 3471 flow [2024-06-03 19:37:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-03 19:37:53,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-03 19:37:53,225 INFO L175 Difference]: Start difference. First operand has 306 places, 294 transitions, 2688 flow. Second operand 11 states and 141 transitions. [2024-06-03 19:37:53,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 318 transitions, 3471 flow [2024-06-03 19:37:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 318 transitions, 3343 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:37:53,595 INFO L231 Difference]: Finished difference. Result has 306 places, 290 transitions, 2689 flow [2024-06-03 19:37:53,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=306, PETRI_TRANSITIONS=290} [2024-06-03 19:37:53,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 19:37:53,596 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 290 transitions, 2689 flow [2024-06-03 19:37:53,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:53,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:53,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:53,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:37:53,597 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)] === [2024-06-03 19:37:53,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1227080081, now seen corresponding path program 7 times [2024-06-03 19:37:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521130204] [2024-06-03 19:37:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521130204] [2024-06-03 19:37:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521130204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353140967] [2024-06-03 19:37:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:54,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:54,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:54,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 290 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:54,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:54,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:54,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:55,083 INFO L124 PetriNetUnfolderBase]: 684/1230 cut-off events. [2024-06-03 19:37:55,084 INFO L125 PetriNetUnfolderBase]: For 125960/125960 co-relation queries the response was YES. [2024-06-03 19:37:55,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 1230 events. 684/1230 cut-off events. For 125960/125960 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6555 event pairs, 66 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 8042. Up to 898 conditions per place. [2024-06-03 19:37:55,095 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 90 changer transitions 0/313 dead transitions. [2024-06-03 19:37:55,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 313 transitions, 3703 flow [2024-06-03 19:37:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-03 19:37:55,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-03 19:37:55,096 INFO L175 Difference]: Start difference. First operand has 306 places, 290 transitions, 2689 flow. Second operand 11 states and 144 transitions. [2024-06-03 19:37:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 313 transitions, 3703 flow [2024-06-03 19:37:55,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 313 transitions, 3545 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:55,488 INFO L231 Difference]: Finished difference. Result has 308 places, 294 transitions, 2868 flow [2024-06-03 19:37:55,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2868, PETRI_PLACES=308, PETRI_TRANSITIONS=294} [2024-06-03 19:37:55,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-03 19:37:55,488 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 294 transitions, 2868 flow [2024-06-03 19:37:55,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:55,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:55,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:37:55,489 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)] === [2024-06-03 19:37:55,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1222438451, now seen corresponding path program 8 times [2024-06-03 19:37:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:55,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310982960] [2024-06-03 19:37:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:55,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310982960] [2024-06-03 19:37:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310982960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:56,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:56,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290312974] [2024-06-03 19:37:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:56,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:56,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:56,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:56,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 294 transitions, 2868 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:56,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:56,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:56,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:56,938 INFO L124 PetriNetUnfolderBase]: 690/1240 cut-off events. [2024-06-03 19:37:56,938 INFO L125 PetriNetUnfolderBase]: For 129661/129661 co-relation queries the response was YES. [2024-06-03 19:37:56,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 1240 events. 690/1240 cut-off events. For 129661/129661 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6632 event pairs, 68 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 8249. Up to 975 conditions per place. [2024-06-03 19:37:56,951 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 71 changer transitions 0/313 dead transitions. [2024-06-03 19:37:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 313 transitions, 3606 flow [2024-06-03 19:37:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 19:37:56,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 19:37:56,952 INFO L175 Difference]: Start difference. First operand has 308 places, 294 transitions, 2868 flow. Second operand 11 states and 138 transitions. [2024-06-03 19:37:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 313 transitions, 3606 flow [2024-06-03 19:37:57,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 313 transitions, 3426 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:57,349 INFO L231 Difference]: Finished difference. Result has 312 places, 296 transitions, 2917 flow [2024-06-03 19:37:57,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2917, PETRI_PLACES=312, PETRI_TRANSITIONS=296} [2024-06-03 19:37:57,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-03 19:37:57,349 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 296 transitions, 2917 flow [2024-06-03 19:37:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:57,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:57,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:57,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:37:57,350 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)] === [2024-06-03 19:37:57,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:57,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1056382487, now seen corresponding path program 10 times [2024-06-03 19:37:57,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:57,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139429980] [2024-06-03 19:37:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:57,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:58,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:58,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139429980] [2024-06-03 19:37:58,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139429980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:58,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:58,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:58,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206073866] [2024-06-03 19:37:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:58,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:58,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:37:58,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:37:58,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 296 transitions, 2917 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:58,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:58,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:37:58,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:58,649 INFO L124 PetriNetUnfolderBase]: 701/1261 cut-off events. [2024-06-03 19:37:58,650 INFO L125 PetriNetUnfolderBase]: For 141388/141388 co-relation queries the response was YES. [2024-06-03 19:37:58,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8726 conditions, 1261 events. 701/1261 cut-off events. For 141388/141388 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6792 event pairs, 85 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 8581. Up to 1064 conditions per place. [2024-06-03 19:37:58,663 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 63 changer transitions 0/313 dead transitions. [2024-06-03 19:37:58,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 313 transitions, 3815 flow [2024-06-03 19:37:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:37:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:37:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:37:58,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:37:58,664 INFO L175 Difference]: Start difference. First operand has 312 places, 296 transitions, 2917 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:37:58,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 313 transitions, 3815 flow [2024-06-03 19:37:59,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 313 transitions, 3616 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-03 19:37:59,089 INFO L231 Difference]: Finished difference. Result has 314 places, 298 transitions, 2886 flow [2024-06-03 19:37:59,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2886, PETRI_PLACES=314, PETRI_TRANSITIONS=298} [2024-06-03 19:37:59,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-03 19:37:59,090 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 298 transitions, 2886 flow [2024-06-03 19:37:59,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:59,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:59,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:59,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:37:59,091 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)] === [2024-06-03 19:37:59,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1056204671, now seen corresponding path program 9 times [2024-06-03 19:37:59,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:59,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384279086] [2024-06-03 19:37:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:59,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:59,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:59,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384279086] [2024-06-03 19:37:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384279086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:59,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:37:59,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803070195] [2024-06-03 19:37:59,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:59,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:37:59,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:37:59,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:00,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:00,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 298 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:00,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:00,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:00,541 INFO L124 PetriNetUnfolderBase]: 697/1255 cut-off events. [2024-06-03 19:38:00,541 INFO L125 PetriNetUnfolderBase]: For 132540/132540 co-relation queries the response was YES. [2024-06-03 19:38:00,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 1255 events. 697/1255 cut-off events. For 132540/132540 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6730 event pairs, 70 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 8248. Up to 982 conditions per place. [2024-06-03 19:38:00,553 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 76 changer transitions 2/318 dead transitions. [2024-06-03 19:38:00,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 318 transitions, 3567 flow [2024-06-03 19:38:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-03 19:38:00,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-03 19:38:00,554 INFO L175 Difference]: Start difference. First operand has 314 places, 298 transitions, 2886 flow. Second operand 11 states and 141 transitions. [2024-06-03 19:38:00,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 318 transitions, 3567 flow [2024-06-03 19:38:00,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 318 transitions, 3417 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:00,903 INFO L231 Difference]: Finished difference. Result has 318 places, 298 transitions, 2894 flow [2024-06-03 19:38:00,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2894, PETRI_PLACES=318, PETRI_TRANSITIONS=298} [2024-06-03 19:38:00,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-03 19:38:00,904 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 298 transitions, 2894 flow [2024-06-03 19:38:00,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:00,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:00,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:00,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:38:00,904 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)] === [2024-06-03 19:38:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1056204857, now seen corresponding path program 11 times [2024-06-03 19:38:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240702187] [2024-06-03 19:38:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:01,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:01,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240702187] [2024-06-03 19:38:01,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240702187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:01,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:01,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:01,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951276366] [2024-06-03 19:38:01,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:01,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:01,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:01,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:02,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:02,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 298 transitions, 2894 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:02,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:02,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:02,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:02,493 INFO L124 PetriNetUnfolderBase]: 714/1294 cut-off events. [2024-06-03 19:38:02,493 INFO L125 PetriNetUnfolderBase]: For 187996/187996 co-relation queries the response was YES. [2024-06-03 19:38:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 1294 events. 714/1294 cut-off events. For 187996/187996 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7021 event pairs, 75 based on Foata normal form. 14/1306 useless extension candidates. Maximal degree in co-relation 8307. Up to 991 conditions per place. [2024-06-03 19:38:02,506 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 67 changer transitions 14/322 dead transitions. [2024-06-03 19:38:02,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 322 transitions, 3672 flow [2024-06-03 19:38:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 19:38:02,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 19:38:02,509 INFO L175 Difference]: Start difference. First operand has 318 places, 298 transitions, 2894 flow. Second operand 11 states and 143 transitions. [2024-06-03 19:38:02,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 322 transitions, 3672 flow [2024-06-03 19:38:02,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 322 transitions, 3491 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 19:38:02,959 INFO L231 Difference]: Finished difference. Result has 319 places, 293 transitions, 2810 flow [2024-06-03 19:38:02,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2810, PETRI_PLACES=319, PETRI_TRANSITIONS=293} [2024-06-03 19:38:02,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-03 19:38:02,959 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 293 transitions, 2810 flow [2024-06-03 19:38:02,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:02,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:02,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:02,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:38:02,960 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)] === [2024-06-03 19:38:02,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash 457221893, now seen corresponding path program 12 times [2024-06-03 19:38:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:02,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277806746] [2024-06-03 19:38:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:03,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:03,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277806746] [2024-06-03 19:38:03,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277806746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:03,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164460112] [2024-06-03 19:38:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:03,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:04,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:04,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 293 transitions, 2810 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:04,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:04,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:04,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:04,452 INFO L124 PetriNetUnfolderBase]: 682/1230 cut-off events. [2024-06-03 19:38:04,452 INFO L125 PetriNetUnfolderBase]: For 125340/125340 co-relation queries the response was YES. [2024-06-03 19:38:04,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 1230 events. 682/1230 cut-off events. For 125340/125340 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6625 event pairs, 69 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7943. Up to 936 conditions per place. [2024-06-03 19:38:04,465 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 83 changer transitions 0/311 dead transitions. [2024-06-03 19:38:04,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 311 transitions, 3486 flow [2024-06-03 19:38:04,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 19:38:04,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 19:38:04,467 INFO L175 Difference]: Start difference. First operand has 319 places, 293 transitions, 2810 flow. Second operand 12 states and 146 transitions. [2024-06-03 19:38:04,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 311 transitions, 3486 flow [2024-06-03 19:38:04,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 311 transitions, 3319 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-03 19:38:04,973 INFO L231 Difference]: Finished difference. Result has 318 places, 294 transitions, 2837 flow [2024-06-03 19:38:04,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2837, PETRI_PLACES=318, PETRI_TRANSITIONS=294} [2024-06-03 19:38:04,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-03 19:38:04,974 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 294 transitions, 2837 flow [2024-06-03 19:38:04,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:04,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:04,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:04,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:38:04,975 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)] === [2024-06-03 19:38:04,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1222611431, now seen corresponding path program 10 times [2024-06-03 19:38:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708016778] [2024-06-03 19:38:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:05,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:05,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708016778] [2024-06-03 19:38:05,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708016778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:05,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:05,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667402478] [2024-06-03 19:38:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:05,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:05,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:05,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:05,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:05,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:05,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 294 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:05,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:05,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:05,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:06,301 INFO L124 PetriNetUnfolderBase]: 678/1224 cut-off events. [2024-06-03 19:38:06,302 INFO L125 PetriNetUnfolderBase]: For 116310/116310 co-relation queries the response was YES. [2024-06-03 19:38:06,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7855 conditions, 1224 events. 678/1224 cut-off events. For 116310/116310 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6573 event pairs, 70 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 7706. Up to 959 conditions per place. [2024-06-03 19:38:06,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 73 changer transitions 0/311 dead transitions. [2024-06-03 19:38:06,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 311 transitions, 3493 flow [2024-06-03 19:38:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 19:38:06,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 19:38:06,317 INFO L175 Difference]: Start difference. First operand has 318 places, 294 transitions, 2837 flow. Second operand 11 states and 139 transitions. [2024-06-03 19:38:06,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 311 transitions, 3493 flow [2024-06-03 19:38:06,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 311 transitions, 3271 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-03 19:38:06,714 INFO L231 Difference]: Finished difference. Result has 318 places, 294 transitions, 2766 flow [2024-06-03 19:38:06,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2766, PETRI_PLACES=318, PETRI_TRANSITIONS=294} [2024-06-03 19:38:06,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-03 19:38:06,715 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 294 transitions, 2766 flow [2024-06-03 19:38:06,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:06,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:06,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:38:06,716 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)] === [2024-06-03 19:38:06,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1227200237, now seen corresponding path program 13 times [2024-06-03 19:38:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:06,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768945262] [2024-06-03 19:38:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:07,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768945262] [2024-06-03 19:38:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768945262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:07,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512554984] [2024-06-03 19:38:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:07,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:07,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:07,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 294 transitions, 2766 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:07,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:07,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:07,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:08,159 INFO L124 PetriNetUnfolderBase]: 682/1232 cut-off events. [2024-06-03 19:38:08,159 INFO L125 PetriNetUnfolderBase]: For 115673/115673 co-relation queries the response was YES. [2024-06-03 19:38:08,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 1232 events. 682/1232 cut-off events. For 115673/115673 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6621 event pairs, 82 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 7658. Up to 956 conditions per place. [2024-06-03 19:38:08,171 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 73 changer transitions 0/310 dead transitions. [2024-06-03 19:38:08,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 310 transitions, 3438 flow [2024-06-03 19:38:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:38:08,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:38:08,172 INFO L175 Difference]: Start difference. First operand has 318 places, 294 transitions, 2766 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:38:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 310 transitions, 3438 flow [2024-06-03 19:38:08,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 310 transitions, 3184 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-03 19:38:08,577 INFO L231 Difference]: Finished difference. Result has 318 places, 295 transitions, 2686 flow [2024-06-03 19:38:08,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2686, PETRI_PLACES=318, PETRI_TRANSITIONS=295} [2024-06-03 19:38:08,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-03 19:38:08,578 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 295 transitions, 2686 flow [2024-06-03 19:38:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:08,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:08,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:38:08,579 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)] === [2024-06-03 19:38:08,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash 347367843, now seen corresponding path program 14 times [2024-06-03 19:38:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:08,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127380010] [2024-06-03 19:38:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127380010] [2024-06-03 19:38:09,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127380010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:09,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:09,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739078851] [2024-06-03 19:38:09,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:09,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:09,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:09,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 295 transitions, 2686 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:09,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:09,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:09,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:10,377 INFO L124 PetriNetUnfolderBase]: 729/1325 cut-off events. [2024-06-03 19:38:10,378 INFO L125 PetriNetUnfolderBase]: For 198358/198358 co-relation queries the response was YES. [2024-06-03 19:38:10,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9720 conditions, 1325 events. 729/1325 cut-off events. For 198358/198358 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7133 event pairs, 104 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 9571. Up to 981 conditions per place. [2024-06-03 19:38:10,391 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 84 changer transitions 0/322 dead transitions. [2024-06-03 19:38:10,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 322 transitions, 3731 flow [2024-06-03 19:38:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-03 19:38:10,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-03 19:38:10,393 INFO L175 Difference]: Start difference. First operand has 318 places, 295 transitions, 2686 flow. Second operand 12 states and 151 transitions. [2024-06-03 19:38:10,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 322 transitions, 3731 flow [2024-06-03 19:38:11,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 322 transitions, 3565 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:11,046 INFO L231 Difference]: Finished difference. Result has 321 places, 297 transitions, 2745 flow [2024-06-03 19:38:11,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2745, PETRI_PLACES=321, PETRI_TRANSITIONS=297} [2024-06-03 19:38:11,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-03 19:38:11,047 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 297 transitions, 2745 flow [2024-06-03 19:38:11,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:11,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:11,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:38:11,048 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)] === [2024-06-03 19:38:11,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1431610747, now seen corresponding path program 2 times [2024-06-03 19:38:11,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:11,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290379844] [2024-06-03 19:38:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:11,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290379844] [2024-06-03 19:38:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290379844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:12,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646165589] [2024-06-03 19:38:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:12,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:12,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:12,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 297 transitions, 2745 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:12,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:12,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:12,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:12,661 INFO L124 PetriNetUnfolderBase]: 733/1333 cut-off events. [2024-06-03 19:38:12,661 INFO L125 PetriNetUnfolderBase]: For 202040/202040 co-relation queries the response was YES. [2024-06-03 19:38:12,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 1333 events. 733/1333 cut-off events. For 202040/202040 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7218 event pairs, 126 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 9628. Up to 1285 conditions per place. [2024-06-03 19:38:12,676 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 290 selfloop transitions, 20 changer transitions 0/312 dead transitions. [2024-06-03 19:38:12,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 312 transitions, 3415 flow [2024-06-03 19:38:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 19:38:12,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 19:38:12,677 INFO L175 Difference]: Start difference. First operand has 321 places, 297 transitions, 2745 flow. Second operand 10 states and 111 transitions. [2024-06-03 19:38:12,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 312 transitions, 3415 flow [2024-06-03 19:38:13,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 312 transitions, 3275 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:13,465 INFO L231 Difference]: Finished difference. Result has 324 places, 299 transitions, 2672 flow [2024-06-03 19:38:13,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2672, PETRI_PLACES=324, PETRI_TRANSITIONS=299} [2024-06-03 19:38:13,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-03 19:38:13,466 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 299 transitions, 2672 flow [2024-06-03 19:38:13,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:13,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:13,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:13,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:38:13,467 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)] === [2024-06-03 19:38:13,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -452870829, now seen corresponding path program 11 times [2024-06-03 19:38:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154121165] [2024-06-03 19:38:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:13,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154121165] [2024-06-03 19:38:14,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154121165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:14,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:14,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:14,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485927736] [2024-06-03 19:38:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:14,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:14,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 299 transitions, 2672 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:14,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:14,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:14,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:14,950 INFO L124 PetriNetUnfolderBase]: 739/1343 cut-off events. [2024-06-03 19:38:14,950 INFO L125 PetriNetUnfolderBase]: For 205928/205928 co-relation queries the response was YES. [2024-06-03 19:38:14,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9856 conditions, 1343 events. 739/1343 cut-off events. For 205928/205928 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7276 event pairs, 118 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 9703. Up to 1224 conditions per place. [2024-06-03 19:38:14,964 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 36 changer transitions 0/321 dead transitions. [2024-06-03 19:38:14,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 321 transitions, 3449 flow [2024-06-03 19:38:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:38:14,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:38:14,965 INFO L175 Difference]: Start difference. First operand has 324 places, 299 transitions, 2672 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:38:14,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 321 transitions, 3449 flow [2024-06-03 19:38:15,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 3405 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:15,719 INFO L231 Difference]: Finished difference. Result has 328 places, 301 transitions, 2783 flow [2024-06-03 19:38:15,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2783, PETRI_PLACES=328, PETRI_TRANSITIONS=301} [2024-06-03 19:38:15,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-03 19:38:15,720 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 301 transitions, 2783 flow [2024-06-03 19:38:15,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:15,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:15,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:15,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:38:15,720 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)] === [2024-06-03 19:38:15,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1438112935, now seen corresponding path program 12 times [2024-06-03 19:38:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:15,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43929857] [2024-06-03 19:38:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:15,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43929857] [2024-06-03 19:38:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43929857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087353788] [2024-06-03 19:38:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:16,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:16,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:16,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 301 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:16,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:16,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:16,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:17,232 INFO L124 PetriNetUnfolderBase]: 748/1358 cut-off events. [2024-06-03 19:38:17,233 INFO L125 PetriNetUnfolderBase]: For 210457/210457 co-relation queries the response was YES. [2024-06-03 19:38:17,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10110 conditions, 1358 events. 748/1358 cut-off events. For 210457/210457 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7393 event pairs, 122 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 9956. Up to 1261 conditions per place. [2024-06-03 19:38:17,247 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 35 changer transitions 0/324 dead transitions. [2024-06-03 19:38:17,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 324 transitions, 3577 flow [2024-06-03 19:38:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 19:38:17,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:38:17,248 INFO L175 Difference]: Start difference. First operand has 328 places, 301 transitions, 2783 flow. Second operand 12 states and 135 transitions. [2024-06-03 19:38:17,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 324 transitions, 3577 flow [2024-06-03 19:38:18,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 324 transitions, 3438 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:18,042 INFO L231 Difference]: Finished difference. Result has 333 places, 306 transitions, 2837 flow [2024-06-03 19:38:18,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2837, PETRI_PLACES=333, PETRI_TRANSITIONS=306} [2024-06-03 19:38:18,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-03 19:38:18,043 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 306 transitions, 2837 flow [2024-06-03 19:38:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:18,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:18,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:18,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:38:18,043 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)] === [2024-06-03 19:38:18,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1952451977, now seen corresponding path program 15 times [2024-06-03 19:38:18,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:18,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547036221] [2024-06-03 19:38:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:18,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547036221] [2024-06-03 19:38:18,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547036221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613360816] [2024-06-03 19:38:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:18,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:18,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 306 transitions, 2837 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:18,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:18,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:18,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:19,386 INFO L124 PetriNetUnfolderBase]: 736/1338 cut-off events. [2024-06-03 19:38:19,386 INFO L125 PetriNetUnfolderBase]: For 213210/213210 co-relation queries the response was YES. [2024-06-03 19:38:19,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 1338 events. 736/1338 cut-off events. For 213210/213210 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7344 event pairs, 98 based on Foata normal form. 14/1350 useless extension candidates. Maximal degree in co-relation 8511. Up to 1134 conditions per place. [2024-06-03 19:38:19,400 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 46 changer transitions 12/328 dead transitions. [2024-06-03 19:38:19,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 328 transitions, 3650 flow [2024-06-03 19:38:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:38:19,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 19:38:19,401 INFO L175 Difference]: Start difference. First operand has 333 places, 306 transitions, 2837 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:38:19,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 328 transitions, 3650 flow [2024-06-03 19:38:19,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 328 transitions, 3515 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:19,913 INFO L231 Difference]: Finished difference. Result has 336 places, 303 transitions, 2783 flow [2024-06-03 19:38:19,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2783, PETRI_PLACES=336, PETRI_TRANSITIONS=303} [2024-06-03 19:38:19,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-03 19:38:19,914 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 303 transitions, 2783 flow [2024-06-03 19:38:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:19,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:19,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:38:19,914 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)] === [2024-06-03 19:38:19,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1574019769, now seen corresponding path program 13 times [2024-06-03 19:38:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:19,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830107004] [2024-06-03 19:38:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:20,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:20,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830107004] [2024-06-03 19:38:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830107004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792521399] [2024-06-03 19:38:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:20,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:20,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:20,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:20,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:20,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 303 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:20,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:20,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:20,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:21,458 INFO L124 PetriNetUnfolderBase]: 710/1288 cut-off events. [2024-06-03 19:38:21,458 INFO L125 PetriNetUnfolderBase]: For 142624/142624 co-relation queries the response was YES. [2024-06-03 19:38:21,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 1288 events. 710/1288 cut-off events. For 142624/142624 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7073 event pairs, 92 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 8239. Up to 1144 conditions per place. [2024-06-03 19:38:21,472 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 47 changer transitions 3/321 dead transitions. [2024-06-03 19:38:21,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3544 flow [2024-06-03 19:38:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:21,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 19:38:21,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 19:38:21,474 INFO L175 Difference]: Start difference. First operand has 336 places, 303 transitions, 2783 flow. Second operand 12 states and 134 transitions. [2024-06-03 19:38:21,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3544 flow [2024-06-03 19:38:21,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 321 transitions, 3434 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:21,920 INFO L231 Difference]: Finished difference. Result has 340 places, 305 transitions, 2862 flow [2024-06-03 19:38:21,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2862, PETRI_PLACES=340, PETRI_TRANSITIONS=305} [2024-06-03 19:38:21,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-03 19:38:21,920 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 305 transitions, 2862 flow [2024-06-03 19:38:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:21,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:21,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:38:21,922 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)] === [2024-06-03 19:38:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2094614921, now seen corresponding path program 16 times [2024-06-03 19:38:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:21,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305617419] [2024-06-03 19:38:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305617419] [2024-06-03 19:38:22,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305617419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:22,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:22,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786046207] [2024-06-03 19:38:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:22,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:22,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 305 transitions, 2862 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:22,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:22,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:22,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:23,219 INFO L124 PetriNetUnfolderBase]: 712/1290 cut-off events. [2024-06-03 19:38:23,219 INFO L125 PetriNetUnfolderBase]: For 145114/145114 co-relation queries the response was YES. [2024-06-03 19:38:23,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8458 conditions, 1290 events. 712/1290 cut-off events. For 145114/145114 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7016 event pairs, 110 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 8298. Up to 1239 conditions per place. [2024-06-03 19:38:23,235 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 293 selfloop transitions, 25 changer transitions 0/320 dead transitions. [2024-06-03 19:38:23,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 320 transitions, 3580 flow [2024-06-03 19:38:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:38:23,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 19:38:23,236 INFO L175 Difference]: Start difference. First operand has 340 places, 305 transitions, 2862 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:38:23,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 320 transitions, 3580 flow [2024-06-03 19:38:23,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 320 transitions, 3411 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:23,763 INFO L231 Difference]: Finished difference. Result has 342 places, 309 transitions, 2819 flow [2024-06-03 19:38:23,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2819, PETRI_PLACES=342, PETRI_TRANSITIONS=309} [2024-06-03 19:38:23,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-03 19:38:23,764 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 309 transitions, 2819 flow [2024-06-03 19:38:23,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:23,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:23,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:23,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:38:23,764 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)] === [2024-06-03 19:38:23,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2118508127, now seen corresponding path program 17 times [2024-06-03 19:38:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338892640] [2024-06-03 19:38:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338892640] [2024-06-03 19:38:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338892640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:24,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926054058] [2024-06-03 19:38:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:24,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:24,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:24,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 309 transitions, 2819 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:24,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:24,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:24,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:25,138 INFO L124 PetriNetUnfolderBase]: 759/1383 cut-off events. [2024-06-03 19:38:25,138 INFO L125 PetriNetUnfolderBase]: For 237785/237785 co-relation queries the response was YES. [2024-06-03 19:38:25,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10542 conditions, 1383 events. 759/1383 cut-off events. For 237785/237785 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7577 event pairs, 109 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 10380. Up to 1111 conditions per place. [2024-06-03 19:38:25,154 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 51 changer transitions 0/333 dead transitions. [2024-06-03 19:38:25,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 333 transitions, 3907 flow [2024-06-03 19:38:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-03 19:38:25,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-03 19:38:25,156 INFO L175 Difference]: Start difference. First operand has 342 places, 309 transitions, 2819 flow. Second operand 11 states and 139 transitions. [2024-06-03 19:38:25,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 333 transitions, 3907 flow [2024-06-03 19:38:26,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 333 transitions, 3849 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-03 19:38:26,067 INFO L231 Difference]: Finished difference. Result has 347 places, 311 transitions, 2925 flow [2024-06-03 19:38:26,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2925, PETRI_PLACES=347, PETRI_TRANSITIONS=311} [2024-06-03 19:38:26,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-03 19:38:26,067 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 311 transitions, 2925 flow [2024-06-03 19:38:26,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:26,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:26,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:38:26,068 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)] === [2024-06-03 19:38:26,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1574192749, now seen corresponding path program 14 times [2024-06-03 19:38:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295496181] [2024-06-03 19:38:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:26,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:26,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295496181] [2024-06-03 19:38:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295496181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:26,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:26,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:26,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115410962] [2024-06-03 19:38:26,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:26,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:27,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:27,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 311 transitions, 2925 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:27,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:27,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:27,478 INFO L124 PetriNetUnfolderBase]: 765/1393 cut-off events. [2024-06-03 19:38:27,479 INFO L125 PetriNetUnfolderBase]: For 243461/243461 co-relation queries the response was YES. [2024-06-03 19:38:27,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10778 conditions, 1393 events. 765/1393 cut-off events. For 243461/243461 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7675 event pairs, 113 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 10615. Up to 1221 conditions per place. [2024-06-03 19:38:27,493 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 56 changer transitions 0/328 dead transitions. [2024-06-03 19:38:27,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 328 transitions, 3695 flow [2024-06-03 19:38:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:38:27,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 19:38:27,494 INFO L175 Difference]: Start difference. First operand has 347 places, 311 transitions, 2925 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:38:27,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 328 transitions, 3695 flow [2024-06-03 19:38:28,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 328 transitions, 3598 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:28,361 INFO L231 Difference]: Finished difference. Result has 351 places, 313 transitions, 3035 flow [2024-06-03 19:38:28,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3035, PETRI_PLACES=351, PETRI_TRANSITIONS=313} [2024-06-03 19:38:28,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-03 19:38:28,362 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 313 transitions, 3035 flow [2024-06-03 19:38:28,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:28,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:28,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:28,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:38:28,362 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)] === [2024-06-03 19:38:28,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1401283801, now seen corresponding path program 3 times [2024-06-03 19:38:28,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:28,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973143820] [2024-06-03 19:38:28,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:28,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:29,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:29,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973143820] [2024-06-03 19:38:29,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973143820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:29,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:29,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:29,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076504097] [2024-06-03 19:38:29,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:29,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:29,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:29,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 313 transitions, 3035 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:29,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:29,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:29,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:29,819 INFO L124 PetriNetUnfolderBase]: 769/1401 cut-off events. [2024-06-03 19:38:29,819 INFO L125 PetriNetUnfolderBase]: For 247392/247392 co-relation queries the response was YES. [2024-06-03 19:38:29,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10910 conditions, 1401 events. 769/1401 cut-off events. For 247392/247392 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7719 event pairs, 127 based on Foata normal form. 2/1401 useless extension candidates. Maximal degree in co-relation 10745. Up to 1338 conditions per place. [2024-06-03 19:38:29,836 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 299 selfloop transitions, 25 changer transitions 0/326 dead transitions. [2024-06-03 19:38:29,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 3719 flow [2024-06-03 19:38:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 19:38:29,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-03 19:38:29,837 INFO L175 Difference]: Start difference. First operand has 351 places, 313 transitions, 3035 flow. Second operand 10 states and 113 transitions. [2024-06-03 19:38:29,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 3719 flow [2024-06-03 19:38:30,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 326 transitions, 3521 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:30,667 INFO L231 Difference]: Finished difference. Result has 352 places, 314 transitions, 2903 flow [2024-06-03 19:38:30,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2903, PETRI_PLACES=352, PETRI_TRANSITIONS=314} [2024-06-03 19:38:30,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-03 19:38:30,668 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 314 transitions, 2903 flow [2024-06-03 19:38:30,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:30,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:30,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:30,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:38:30,669 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)] === [2024-06-03 19:38:30,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1401530065, now seen corresponding path program 18 times [2024-06-03 19:38:30,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:30,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962695076] [2024-06-03 19:38:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:31,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:31,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962695076] [2024-06-03 19:38:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962695076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:31,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:31,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:31,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073341430] [2024-06-03 19:38:31,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:31,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:31,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 314 transitions, 2903 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:31,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:31,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:31,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:32,225 INFO L124 PetriNetUnfolderBase]: 793/1453 cut-off events. [2024-06-03 19:38:32,225 INFO L125 PetriNetUnfolderBase]: For 331902/331902 co-relation queries the response was YES. [2024-06-03 19:38:32,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11089 conditions, 1453 events. 793/1453 cut-off events. For 331902/331902 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8103 event pairs, 123 based on Foata normal form. 14/1465 useless extension candidates. Maximal degree in co-relation 10923. Up to 1255 conditions per place. [2024-06-03 19:38:32,242 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 39 changer transitions 13/336 dead transitions. [2024-06-03 19:38:32,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 336 transitions, 3744 flow [2024-06-03 19:38:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:38:32,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:38:32,243 INFO L175 Difference]: Start difference. First operand has 352 places, 314 transitions, 2903 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:38:32,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 336 transitions, 3744 flow [2024-06-03 19:38:33,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 336 transitions, 3673 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:33,229 INFO L231 Difference]: Finished difference. Result has 354 places, 310 transitions, 2897 flow [2024-06-03 19:38:33,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2897, PETRI_PLACES=354, PETRI_TRANSITIONS=310} [2024-06-03 19:38:33,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-03 19:38:33,229 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 310 transitions, 2897 flow [2024-06-03 19:38:33,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:33,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:33,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:33,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:38:33,230 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)] === [2024-06-03 19:38:33,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1574192935, now seen corresponding path program 19 times [2024-06-03 19:38:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747632447] [2024-06-03 19:38:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747632447] [2024-06-03 19:38:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747632447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:34,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:34,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631605338] [2024-06-03 19:38:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:34,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:34,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 310 transitions, 2897 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:34,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:34,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:34,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:34,754 INFO L124 PetriNetUnfolderBase]: 761/1397 cut-off events. [2024-06-03 19:38:34,755 INFO L125 PetriNetUnfolderBase]: For 254466/254466 co-relation queries the response was YES. [2024-06-03 19:38:34,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10780 conditions, 1397 events. 761/1397 cut-off events. For 254466/254466 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7789 event pairs, 117 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 10615. Up to 1251 conditions per place. [2024-06-03 19:38:34,771 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 48 changer transitions 0/325 dead transitions. [2024-06-03 19:38:34,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 325 transitions, 3591 flow [2024-06-03 19:38:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 19:38:34,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-03 19:38:34,772 INFO L175 Difference]: Start difference. First operand has 354 places, 310 transitions, 2897 flow. Second operand 12 states and 133 transitions. [2024-06-03 19:38:34,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 325 transitions, 3591 flow [2024-06-03 19:38:35,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 325 transitions, 3497 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:35,749 INFO L231 Difference]: Finished difference. Result has 357 places, 311 transitions, 2925 flow [2024-06-03 19:38:35,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2925, PETRI_PLACES=357, PETRI_TRANSITIONS=311} [2024-06-03 19:38:35,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-03 19:38:35,750 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 311 transitions, 2925 flow [2024-06-03 19:38:35,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:35,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:35,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:35,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:38:35,750 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)] === [2024-06-03 19:38:35,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1578661399, now seen corresponding path program 15 times [2024-06-03 19:38:35,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:35,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153891920] [2024-06-03 19:38:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:36,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:36,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153891920] [2024-06-03 19:38:36,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153891920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:36,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:36,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144413834] [2024-06-03 19:38:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:36,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:36,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:36,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 311 transitions, 2925 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:36,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:36,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:36,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:37,303 INFO L124 PetriNetUnfolderBase]: 777/1423 cut-off events. [2024-06-03 19:38:37,303 INFO L125 PetriNetUnfolderBase]: For 275317/275317 co-relation queries the response was YES. [2024-06-03 19:38:37,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 1423 events. 777/1423 cut-off events. For 275317/275317 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7930 event pairs, 118 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 11265. Up to 1174 conditions per place. [2024-06-03 19:38:37,317 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 76 changer transitions 0/330 dead transitions. [2024-06-03 19:38:37,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 330 transitions, 4033 flow [2024-06-03 19:38:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:38:37,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 19:38:37,318 INFO L175 Difference]: Start difference. First operand has 357 places, 311 transitions, 2925 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:38:37,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 330 transitions, 4033 flow [2024-06-03 19:38:38,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 330 transitions, 3923 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 19:38:38,300 INFO L231 Difference]: Finished difference. Result has 358 places, 315 transitions, 3158 flow [2024-06-03 19:38:38,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3158, PETRI_PLACES=358, PETRI_TRANSITIONS=315} [2024-06-03 19:38:38,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-03 19:38:38,301 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 315 transitions, 3158 flow [2024-06-03 19:38:38,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:38,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:38,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:38,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:38:38,302 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)] === [2024-06-03 19:38:38,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1578661585, now seen corresponding path program 20 times [2024-06-03 19:38:38,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:38,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362301960] [2024-06-03 19:38:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:38,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:39,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:39,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362301960] [2024-06-03 19:38:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362301960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:39,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094194438] [2024-06-03 19:38:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:39,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:39,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:39,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:39,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 315 transitions, 3158 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:39,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:39,902 INFO L124 PetriNetUnfolderBase]: 774/1418 cut-off events. [2024-06-03 19:38:39,902 INFO L125 PetriNetUnfolderBase]: For 261649/261649 co-relation queries the response was YES. [2024-06-03 19:38:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11254 conditions, 1418 events. 774/1418 cut-off events. For 261649/261649 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7885 event pairs, 115 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 11087. Up to 1198 conditions per place. [2024-06-03 19:38:39,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 79 changer transitions 0/331 dead transitions. [2024-06-03 19:38:39,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 331 transitions, 3850 flow [2024-06-03 19:38:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:38:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:38:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-03 19:38:39,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-03 19:38:39,920 INFO L175 Difference]: Start difference. First operand has 358 places, 315 transitions, 3158 flow. Second operand 13 states and 146 transitions. [2024-06-03 19:38:39,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 331 transitions, 3850 flow [2024-06-03 19:38:40,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 331 transitions, 3681 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:40,880 INFO L231 Difference]: Finished difference. Result has 364 places, 315 transitions, 3155 flow [2024-06-03 19:38:40,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3155, PETRI_PLACES=364, PETRI_TRANSITIONS=315} [2024-06-03 19:38:40,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-03 19:38:40,880 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 315 transitions, 3155 flow [2024-06-03 19:38:40,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:40,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:40,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:38:40,882 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)] === [2024-06-03 19:38:40,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 309368239, now seen corresponding path program 21 times [2024-06-03 19:38:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368761745] [2024-06-03 19:38:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368761745] [2024-06-03 19:38:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368761745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:41,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515390028] [2024-06-03 19:38:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:41,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:41,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 315 transitions, 3155 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:41,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:41,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:41,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:42,370 INFO L124 PetriNetUnfolderBase]: 798/1470 cut-off events. [2024-06-03 19:38:42,370 INFO L125 PetriNetUnfolderBase]: For 350135/350135 co-relation queries the response was YES. [2024-06-03 19:38:42,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11633 conditions, 1470 events. 798/1470 cut-off events. For 350135/350135 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8282 event pairs, 125 based on Foata normal form. 14/1482 useless extension candidates. Maximal degree in co-relation 11464. Up to 1321 conditions per place. [2024-06-03 19:38:42,387 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 293 selfloop transitions, 29 changer transitions 12/336 dead transitions. [2024-06-03 19:38:42,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 336 transitions, 3997 flow [2024-06-03 19:38:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:38:42,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 19:38:42,388 INFO L175 Difference]: Start difference. First operand has 364 places, 315 transitions, 3155 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:38:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 336 transitions, 3997 flow [2024-06-03 19:38:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 336 transitions, 3833 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 19:38:43,383 INFO L231 Difference]: Finished difference. Result has 363 places, 311 transitions, 3032 flow [2024-06-03 19:38:43,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3032, PETRI_PLACES=363, PETRI_TRANSITIONS=311} [2024-06-03 19:38:43,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-03 19:38:43,384 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 311 transitions, 3032 flow [2024-06-03 19:38:43,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:38:43,385 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)] === [2024-06-03 19:38:43,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1578781555, now seen corresponding path program 22 times [2024-06-03 19:38:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581664311] [2024-06-03 19:38:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:43,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581664311] [2024-06-03 19:38:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581664311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:44,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:44,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612142177] [2024-06-03 19:38:44,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:44,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:44,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 311 transitions, 3032 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:44,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:44,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:44,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:44,840 INFO L124 PetriNetUnfolderBase]: 804/1484 cut-off events. [2024-06-03 19:38:44,840 INFO L125 PetriNetUnfolderBase]: For 350838/350838 co-relation queries the response was YES. [2024-06-03 19:38:44,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 1484 events. 804/1484 cut-off events. For 350838/350838 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8327 event pairs, 125 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 12910. Up to 1000 conditions per place. [2024-06-03 19:38:44,858 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 80 changer transitions 0/334 dead transitions. [2024-06-03 19:38:44,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 334 transitions, 4118 flow [2024-06-03 19:38:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:38:44,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-03 19:38:44,859 INFO L175 Difference]: Start difference. First operand has 363 places, 311 transitions, 3032 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:38:44,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 334 transitions, 4118 flow [2024-06-03 19:38:45,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 334 transitions, 4034 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:45,815 INFO L231 Difference]: Finished difference. Result has 364 places, 312 transitions, 3144 flow [2024-06-03 19:38:45,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3144, PETRI_PLACES=364, PETRI_TRANSITIONS=312} [2024-06-03 19:38:45,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-03 19:38:45,815 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 312 transitions, 3144 flow [2024-06-03 19:38:45,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:45,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:45,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:45,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:38:45,816 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)] === [2024-06-03 19:38:45,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1401529879, now seen corresponding path program 16 times [2024-06-03 19:38:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:45,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389704788] [2024-06-03 19:38:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389704788] [2024-06-03 19:38:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389704788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:46,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:46,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098736253] [2024-06-03 19:38:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:46,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:46,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:46,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 312 transitions, 3144 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:46,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:47,318 INFO L124 PetriNetUnfolderBase]: 810/1494 cut-off events. [2024-06-03 19:38:47,319 INFO L125 PetriNetUnfolderBase]: For 357043/357043 co-relation queries the response was YES. [2024-06-03 19:38:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13349 conditions, 1494 events. 810/1494 cut-off events. For 357043/357043 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8417 event pairs, 138 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 13178. Up to 1344 conditions per place. [2024-06-03 19:38:47,337 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 284 selfloop transitions, 42 changer transitions 2/330 dead transitions. [2024-06-03 19:38:47,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 330 transitions, 3923 flow [2024-06-03 19:38:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:38:47,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:38:47,340 INFO L175 Difference]: Start difference. First operand has 364 places, 312 transitions, 3144 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:38:47,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 330 transitions, 3923 flow [2024-06-03 19:38:48,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 330 transitions, 3709 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-03 19:38:48,561 INFO L231 Difference]: Finished difference. Result has 365 places, 314 transitions, 3104 flow [2024-06-03 19:38:48,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2931, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3104, PETRI_PLACES=365, PETRI_TRANSITIONS=314} [2024-06-03 19:38:48,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-03 19:38:48,562 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 314 transitions, 3104 flow [2024-06-03 19:38:48,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:48,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:48,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:38:48,562 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)] === [2024-06-03 19:38:48,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1407959155, now seen corresponding path program 23 times [2024-06-03 19:38:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:48,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468593155] [2024-06-03 19:38:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:48,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468593155] [2024-06-03 19:38:49,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468593155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:49,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:49,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145771178] [2024-06-03 19:38:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:49,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:49,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:49,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:49,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 314 transitions, 3104 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:49,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:50,288 INFO L124 PetriNetUnfolderBase]: 791/1461 cut-off events. [2024-06-03 19:38:50,289 INFO L125 PetriNetUnfolderBase]: For 347172/347172 co-relation queries the response was YES. [2024-06-03 19:38:50,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11238 conditions, 1461 events. 791/1461 cut-off events. For 347172/347172 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8235 event pairs, 128 based on Foata normal form. 14/1473 useless extension candidates. Maximal degree in co-relation 11068. Up to 1262 conditions per place. [2024-06-03 19:38:50,303 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 40 changer transitions 14/337 dead transitions. [2024-06-03 19:38:50,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 337 transitions, 3932 flow [2024-06-03 19:38:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 19:38:50,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:38:50,305 INFO L175 Difference]: Start difference. First operand has 365 places, 314 transitions, 3104 flow. Second operand 12 states and 147 transitions. [2024-06-03 19:38:50,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 337 transitions, 3932 flow [2024-06-03 19:38:51,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 337 transitions, 3767 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-03 19:38:51,269 INFO L231 Difference]: Finished difference. Result has 368 places, 309 transitions, 2965 flow [2024-06-03 19:38:51,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2965, PETRI_PLACES=368, PETRI_TRANSITIONS=309} [2024-06-03 19:38:51,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-03 19:38:51,270 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 309 transitions, 2965 flow [2024-06-03 19:38:51,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:51,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:51,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:51,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:38:51,271 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)] === [2024-06-03 19:38:51,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2088181181, now seen corresponding path program 24 times [2024-06-03 19:38:51,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:51,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232519110] [2024-06-03 19:38:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:51,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232519110] [2024-06-03 19:38:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232519110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:52,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:52,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361185356] [2024-06-03 19:38:52,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:52,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:52,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:52,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 309 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:52,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:52,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:52,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:52,709 INFO L124 PetriNetUnfolderBase]: 759/1397 cut-off events. [2024-06-03 19:38:52,710 INFO L125 PetriNetUnfolderBase]: For 261939/261939 co-relation queries the response was YES. [2024-06-03 19:38:52,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10743 conditions, 1397 events. 759/1397 cut-off events. For 261939/261939 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7785 event pairs, 112 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 10572. Up to 1167 conditions per place. [2024-06-03 19:38:52,727 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 43 changer transitions 0/331 dead transitions. [2024-06-03 19:38:52,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 331 transitions, 4044 flow [2024-06-03 19:38:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:38:52,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:38:52,728 INFO L175 Difference]: Start difference. First operand has 368 places, 309 transitions, 2965 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:38:52,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 331 transitions, 4044 flow [2024-06-03 19:38:53,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 331 transitions, 3936 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-03 19:38:53,688 INFO L231 Difference]: Finished difference. Result has 366 places, 310 transitions, 2974 flow [2024-06-03 19:38:53,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2974, PETRI_PLACES=366, PETRI_TRANSITIONS=310} [2024-06-03 19:38:53,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-03 19:38:53,689 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 310 transitions, 2974 flow [2024-06-03 19:38:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:53,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:53,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:53,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 19:38:53,690 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)] === [2024-06-03 19:38:53,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1407958969, now seen corresponding path program 17 times [2024-06-03 19:38:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122425371] [2024-06-03 19:38:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122425371] [2024-06-03 19:38:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122425371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:54,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:54,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:54,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479998473] [2024-06-03 19:38:54,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:54,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:54,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:54,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:54,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 310 transitions, 2974 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:54,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:54,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:54,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:55,062 INFO L124 PetriNetUnfolderBase]: 775/1423 cut-off events. [2024-06-03 19:38:55,062 INFO L125 PetriNetUnfolderBase]: For 283791/283791 co-relation queries the response was YES. [2024-06-03 19:38:55,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11353 conditions, 1423 events. 775/1423 cut-off events. For 283791/283791 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7981 event pairs, 118 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 11183. Up to 1261 conditions per place. [2024-06-03 19:38:55,080 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 46 changer transitions 0/330 dead transitions. [2024-06-03 19:38:55,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 330 transitions, 4082 flow [2024-06-03 19:38:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:38:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:38:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:38:55,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:38:55,081 INFO L175 Difference]: Start difference. First operand has 366 places, 310 transitions, 2974 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:38:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 330 transitions, 4082 flow [2024-06-03 19:38:56,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 330 transitions, 3891 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-03 19:38:56,187 INFO L231 Difference]: Finished difference. Result has 366 places, 314 transitions, 3052 flow [2024-06-03 19:38:56,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3052, PETRI_PLACES=366, PETRI_TRANSITIONS=314} [2024-06-03 19:38:56,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-03 19:38:56,188 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 314 transitions, 3052 flow [2024-06-03 19:38:56,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:56,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:56,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:56,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 19:38:56,188 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)] === [2024-06-03 19:38:56,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:56,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1438286101, now seen corresponding path program 25 times [2024-06-03 19:38:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:56,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563268473] [2024-06-03 19:38:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:56,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:57,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563268473] [2024-06-03 19:38:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563268473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:57,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:57,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362387038] [2024-06-03 19:38:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:57,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:57,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:57,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:57,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:57,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:57,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 314 transitions, 3052 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:57,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:57,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:57,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:57,801 INFO L124 PetriNetUnfolderBase]: 779/1431 cut-off events. [2024-06-03 19:38:57,801 INFO L125 PetriNetUnfolderBase]: For 288548/288548 co-relation queries the response was YES. [2024-06-03 19:38:57,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11238 conditions, 1431 events. 779/1431 cut-off events. For 288548/288548 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8030 event pairs, 119 based on Foata normal form. 2/1431 useless extension candidates. Maximal degree in co-relation 11069. Up to 1314 conditions per place. [2024-06-03 19:38:57,818 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 42 changer transitions 0/330 dead transitions. [2024-06-03 19:38:57,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 330 transitions, 3763 flow [2024-06-03 19:38:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:38:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:38:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 19:38:57,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-03 19:38:57,819 INFO L175 Difference]: Start difference. First operand has 366 places, 314 transitions, 3052 flow. Second operand 12 states and 133 transitions. [2024-06-03 19:38:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 330 transitions, 3763 flow [2024-06-03 19:38:58,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 330 transitions, 3633 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:58,761 INFO L231 Difference]: Finished difference. Result has 371 places, 315 transitions, 3037 flow [2024-06-03 19:38:58,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3037, PETRI_PLACES=371, PETRI_TRANSITIONS=315} [2024-06-03 19:38:58,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-03 19:38:58,762 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 315 transitions, 3037 flow [2024-06-03 19:38:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:58,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:58,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:58,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 19:38:58,762 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)] === [2024-06-03 19:38:58,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1438285915, now seen corresponding path program 18 times [2024-06-03 19:38:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76867369] [2024-06-03 19:38:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:58,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:59,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76867369] [2024-06-03 19:38:59,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76867369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:59,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:59,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:38:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024716777] [2024-06-03 19:38:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:38:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:38:59,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:38:59,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:38:59,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 315 transitions, 3037 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:59,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:59,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:38:59,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:00,185 INFO L124 PetriNetUnfolderBase]: 785/1441 cut-off events. [2024-06-03 19:39:00,186 INFO L125 PetriNetUnfolderBase]: For 293090/293090 co-relation queries the response was YES. [2024-06-03 19:39:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 1441 events. 785/1441 cut-off events. For 293090/293090 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8067 event pairs, 112 based on Foata normal form. 2/1441 useless extension candidates. Maximal degree in co-relation 11218. Up to 1276 conditions per place. [2024-06-03 19:39:00,271 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 51 changer transitions 0/335 dead transitions. [2024-06-03 19:39:00,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 335 transitions, 4173 flow [2024-06-03 19:39:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:39:00,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:39:00,272 INFO L175 Difference]: Start difference. First operand has 371 places, 315 transitions, 3037 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:39:00,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 335 transitions, 4173 flow [2024-06-03 19:39:01,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 335 transitions, 4069 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:01,359 INFO L231 Difference]: Finished difference. Result has 373 places, 319 transitions, 3252 flow [2024-06-03 19:39:01,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3252, PETRI_PLACES=373, PETRI_TRANSITIONS=319} [2024-06-03 19:39:01,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-03 19:39:01,360 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 319 transitions, 3252 flow [2024-06-03 19:39:01,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:01,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:01,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:01,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 19:39:01,360 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)] === [2024-06-03 19:39:01,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1407785989, now seen corresponding path program 19 times [2024-06-03 19:39:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050599088] [2024-06-03 19:39:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:02,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:02,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050599088] [2024-06-03 19:39:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050599088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:02,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976325565] [2024-06-03 19:39:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:02,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:02,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 319 transitions, 3252 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:02,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:02,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:02,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:02,863 INFO L124 PetriNetUnfolderBase]: 781/1435 cut-off events. [2024-06-03 19:39:02,863 INFO L125 PetriNetUnfolderBase]: For 277292/277292 co-relation queries the response was YES. [2024-06-03 19:39:02,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11142 conditions, 1435 events. 781/1435 cut-off events. For 277292/277292 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8043 event pairs, 122 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 10969. Up to 1319 conditions per place. [2024-06-03 19:39:02,880 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 35 changer transitions 0/332 dead transitions. [2024-06-03 19:39:02,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3940 flow [2024-06-03 19:39:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 19:39:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-03 19:39:02,881 INFO L175 Difference]: Start difference. First operand has 373 places, 319 transitions, 3252 flow. Second operand 11 states and 126 transitions. [2024-06-03 19:39:02,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3940 flow [2024-06-03 19:39:03,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 332 transitions, 3664 flow, removed 82 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:03,867 INFO L231 Difference]: Finished difference. Result has 374 places, 319 transitions, 3051 flow [2024-06-03 19:39:03,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3051, PETRI_PLACES=374, PETRI_TRANSITIONS=319} [2024-06-03 19:39:03,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-03 19:39:03,868 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 319 transitions, 3051 flow [2024-06-03 19:39:03,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:03,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:03,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 19:39:03,868 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)] === [2024-06-03 19:39:03,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1774810329, now seen corresponding path program 4 times [2024-06-03 19:39:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577835292] [2024-06-03 19:39:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577835292] [2024-06-03 19:39:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577835292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808108705] [2024-06-03 19:39:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:05,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:05,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 319 transitions, 3051 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:05,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:05,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:05,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:05,620 INFO L124 PetriNetUnfolderBase]: 785/1443 cut-off events. [2024-06-03 19:39:05,620 INFO L125 PetriNetUnfolderBase]: For 278696/278696 co-relation queries the response was YES. [2024-06-03 19:39:05,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10843 conditions, 1443 events. 785/1443 cut-off events. For 278696/278696 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8104 event pairs, 121 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 10671. Up to 1402 conditions per place. [2024-06-03 19:39:05,640 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 314 selfloop transitions, 16 changer transitions 0/332 dead transitions. [2024-06-03 19:39:05,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3749 flow [2024-06-03 19:39:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:39:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:39:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:39:05,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 19:39:05,641 INFO L175 Difference]: Start difference. First operand has 374 places, 319 transitions, 3051 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:39:05,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3749 flow [2024-06-03 19:39:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 332 transitions, 3657 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:06,678 INFO L231 Difference]: Finished difference. Result has 374 places, 320 transitions, 3009 flow [2024-06-03 19:39:06,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3009, PETRI_PLACES=374, PETRI_TRANSITIONS=320} [2024-06-03 19:39:06,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-03 19:39:06,679 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 320 transitions, 3009 flow [2024-06-03 19:39:06,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:06,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:06,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:06,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 19:39:06,679 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)] === [2024-06-03 19:39:06,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:06,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2070029529, now seen corresponding path program 5 times [2024-06-03 19:39:06,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:06,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609301523] [2024-06-03 19:39:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:06,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609301523] [2024-06-03 19:39:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609301523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:07,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:07,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519762235] [2024-06-03 19:39:07,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:07,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:07,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:07,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 320 transitions, 3009 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:07,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:07,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:08,066 INFO L124 PetriNetUnfolderBase]: 789/1451 cut-off events. [2024-06-03 19:39:08,067 INFO L125 PetriNetUnfolderBase]: For 282937/282937 co-relation queries the response was YES. [2024-06-03 19:39:08,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10862 conditions, 1451 events. 789/1451 cut-off events. For 282937/282937 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8170 event pairs, 128 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 10689. Up to 1415 conditions per place. [2024-06-03 19:39:08,080 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 314 selfloop transitions, 16 changer transitions 0/332 dead transitions. [2024-06-03 19:39:08,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3707 flow [2024-06-03 19:39:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:39:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:39:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:39:08,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-03 19:39:08,081 INFO L175 Difference]: Start difference. First operand has 374 places, 320 transitions, 3009 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:39:08,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3707 flow [2024-06-03 19:39:09,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 332 transitions, 3667 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:39:09,132 INFO L231 Difference]: Finished difference. Result has 376 places, 321 transitions, 3021 flow [2024-06-03 19:39:09,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3021, PETRI_PLACES=376, PETRI_TRANSITIONS=321} [2024-06-03 19:39:09,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-03 19:39:09,132 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 321 transitions, 3021 flow [2024-06-03 19:39:09,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:09,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:09,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:09,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 19:39:09,133 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)] === [2024-06-03 19:39:09,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1784938587, now seen corresponding path program 20 times [2024-06-03 19:39:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:09,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678347836] [2024-06-03 19:39:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:10,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:10,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678347836] [2024-06-03 19:39:10,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678347836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:10,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:10,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:10,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828253277] [2024-06-03 19:39:10,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:10,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:10,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:10,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:10,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:10,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 321 transitions, 3021 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:10,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:10,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:10,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:10,630 INFO L124 PetriNetUnfolderBase]: 785/1445 cut-off events. [2024-06-03 19:39:10,630 INFO L125 PetriNetUnfolderBase]: For 270309/270309 co-relation queries the response was YES. [2024-06-03 19:39:10,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10553 conditions, 1445 events. 785/1445 cut-off events. For 270309/270309 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8158 event pairs, 123 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 10379. Up to 1394 conditions per place. [2024-06-03 19:39:10,647 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 314 selfloop transitions, 19 changer transitions 0/335 dead transitions. [2024-06-03 19:39:10,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 335 transitions, 3717 flow [2024-06-03 19:39:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:39:10,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 19:39:10,649 INFO L175 Difference]: Start difference. First operand has 376 places, 321 transitions, 3021 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:39:10,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 335 transitions, 3717 flow [2024-06-03 19:39:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 335 transitions, 3651 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 19:39:11,644 INFO L231 Difference]: Finished difference. Result has 378 places, 321 transitions, 2998 flow [2024-06-03 19:39:11,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2998, PETRI_PLACES=378, PETRI_TRANSITIONS=321} [2024-06-03 19:39:11,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-03 19:39:11,645 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 321 transitions, 2998 flow [2024-06-03 19:39:11,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:11,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:11,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 19:39:11,646 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)] === [2024-06-03 19:39:11,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211971, now seen corresponding path program 26 times [2024-06-03 19:39:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323426257] [2024-06-03 19:39:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:12,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323426257] [2024-06-03 19:39:12,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323426257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:12,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:12,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247706758] [2024-06-03 19:39:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:12,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:12,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:12,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:12,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:12,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 321 transitions, 2998 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:12,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:12,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:12,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:12,913 INFO L124 PetriNetUnfolderBase]: 782/1440 cut-off events. [2024-06-03 19:39:12,913 INFO L125 PetriNetUnfolderBase]: For 257251/257251 co-relation queries the response was YES. [2024-06-03 19:39:12,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1440 events. 782/1440 cut-off events. For 257251/257251 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8136 event pairs, 128 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 10085. Up to 1404 conditions per place. [2024-06-03 19:39:12,930 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 312 selfloop transitions, 18 changer transitions 0/332 dead transitions. [2024-06-03 19:39:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 332 transitions, 3682 flow [2024-06-03 19:39:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 19:39:12,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-03 19:39:12,932 INFO L175 Difference]: Start difference. First operand has 378 places, 321 transitions, 2998 flow. Second operand 11 states and 115 transitions. [2024-06-03 19:39:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 332 transitions, 3682 flow [2024-06-03 19:39:13,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 332 transitions, 3571 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-03 19:39:13,841 INFO L231 Difference]: Finished difference. Result has 380 places, 321 transitions, 2927 flow [2024-06-03 19:39:13,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2927, PETRI_PLACES=380, PETRI_TRANSITIONS=321} [2024-06-03 19:39:13,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-03 19:39:13,841 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 321 transitions, 2927 flow [2024-06-03 19:39:13,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:13,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:13,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:13,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 19:39:13,842 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)] === [2024-06-03 19:39:13,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1774454139, now seen corresponding path program 6 times [2024-06-03 19:39:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70236124] [2024-06-03 19:39:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:14,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70236124] [2024-06-03 19:39:14,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70236124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:14,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:14,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181614482] [2024-06-03 19:39:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:14,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:14,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:14,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 321 transitions, 2927 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:14,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:14,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:15,356 INFO L124 PetriNetUnfolderBase]: 779/1435 cut-off events. [2024-06-03 19:39:15,356 INFO L125 PetriNetUnfolderBase]: For 242707/242707 co-relation queries the response was YES. [2024-06-03 19:39:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9886 conditions, 1435 events. 779/1435 cut-off events. For 242707/242707 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8086 event pairs, 117 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 9711. Up to 1394 conditions per place. [2024-06-03 19:39:15,374 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 316 selfloop transitions, 15 changer transitions 0/333 dead transitions. [2024-06-03 19:39:15,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 333 transitions, 3615 flow [2024-06-03 19:39:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:39:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:39:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:39:15,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 19:39:15,375 INFO L175 Difference]: Start difference. First operand has 380 places, 321 transitions, 2927 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:39:15,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 333 transitions, 3615 flow [2024-06-03 19:39:16,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 333 transitions, 3389 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-03 19:39:16,310 INFO L231 Difference]: Finished difference. Result has 378 places, 321 transitions, 2735 flow [2024-06-03 19:39:16,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2735, PETRI_PLACES=378, PETRI_TRANSITIONS=321} [2024-06-03 19:39:16,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-03 19:39:16,311 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 321 transitions, 2735 flow [2024-06-03 19:39:16,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:16,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:16,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:16,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 19:39:16,312 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)] === [2024-06-03 19:39:16,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211785, now seen corresponding path program 21 times [2024-06-03 19:39:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:16,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761610916] [2024-06-03 19:39:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:17,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761610916] [2024-06-03 19:39:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761610916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:17,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:39:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131405126] [2024-06-03 19:39:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:39:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:39:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:39:17,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:17,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 321 transitions, 2735 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:17,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:17,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:17,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:17,752 INFO L124 PetriNetUnfolderBase]: 739/1357 cut-off events. [2024-06-03 19:39:17,752 INFO L125 PetriNetUnfolderBase]: For 124150/124150 co-relation queries the response was YES. [2024-06-03 19:39:17,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 1357 events. 739/1357 cut-off events. For 124150/124150 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7658 event pairs, 96 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 7110. Up to 1267 conditions per place. [2024-06-03 19:39:17,764 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 304 selfloop transitions, 30 changer transitions 0/336 dead transitions. [2024-06-03 19:39:17,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 336 transitions, 3435 flow [2024-06-03 19:39:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 19:39:17,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 19:39:17,765 INFO L175 Difference]: Start difference. First operand has 378 places, 321 transitions, 2735 flow. Second operand 11 states and 124 transitions. [2024-06-03 19:39:17,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 336 transitions, 3435 flow [2024-06-03 19:39:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 336 transitions, 3262 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:18,223 INFO L231 Difference]: Finished difference. Result has 379 places, 321 transitions, 2627 flow [2024-06-03 19:39:18,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2627, PETRI_PLACES=379, PETRI_TRANSITIONS=321} [2024-06-03 19:39:18,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-03 19:39:18,223 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 321 transitions, 2627 flow [2024-06-03 19:39:18,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:18,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:18,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 19:39:18,224 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)] === [2024-06-03 19:39:18,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1561226187, now seen corresponding path program 1 times [2024-06-03 19:39:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039945262] [2024-06-03 19:39:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:19,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039945262] [2024-06-03 19:39:19,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039945262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:19,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:19,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:19,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035189616] [2024-06-03 19:39:19,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:19,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:19,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:19,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 321 transitions, 2627 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:19,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:19,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:19,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:19,857 INFO L124 PetriNetUnfolderBase]: 780/1444 cut-off events. [2024-06-03 19:39:19,857 INFO L125 PetriNetUnfolderBase]: For 263149/263149 co-relation queries the response was YES. [2024-06-03 19:39:19,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8998 conditions, 1444 events. 780/1444 cut-off events. For 263149/263149 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8199 event pairs, 87 based on Foata normal form. 8/1450 useless extension candidates. Maximal degree in co-relation 8822. Up to 922 conditions per place. [2024-06-03 19:39:19,874 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 53 changer transitions 23/353 dead transitions. [2024-06-03 19:39:19,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 353 transitions, 3807 flow [2024-06-03 19:39:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:39:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:39:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-03 19:39:19,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-03 19:39:19,876 INFO L175 Difference]: Start difference. First operand has 379 places, 321 transitions, 2627 flow. Second operand 13 states and 157 transitions. [2024-06-03 19:39:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 353 transitions, 3807 flow [2024-06-03 19:39:20,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 353 transitions, 3630 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-03 19:39:20,698 INFO L231 Difference]: Finished difference. Result has 380 places, 311 transitions, 2481 flow [2024-06-03 19:39:20,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2481, PETRI_PLACES=380, PETRI_TRANSITIONS=311} [2024-06-03 19:39:20,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-03 19:39:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 311 transitions, 2481 flow [2024-06-03 19:39:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:20,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 19:39:20,699 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)] === [2024-06-03 19:39:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 239639763, now seen corresponding path program 2 times [2024-06-03 19:39:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931102113] [2024-06-03 19:39:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931102113] [2024-06-03 19:39:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931102113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:21,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:21,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823115443] [2024-06-03 19:39:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:21,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:21,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 311 transitions, 2481 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:21,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:21,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:21,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:22,481 INFO L124 PetriNetUnfolderBase]: 747/1389 cut-off events. [2024-06-03 19:39:22,481 INFO L125 PetriNetUnfolderBase]: For 266495/266495 co-relation queries the response was YES. [2024-06-03 19:39:22,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8719 conditions, 1389 events. 747/1389 cut-off events. For 266495/266495 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7869 event pairs, 81 based on Foata normal form. 8/1395 useless extension candidates. Maximal degree in co-relation 8543. Up to 922 conditions per place. [2024-06-03 19:39:22,498 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 50 changer transitions 21/340 dead transitions. [2024-06-03 19:39:22,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 340 transitions, 3625 flow [2024-06-03 19:39:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:39:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:39:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-03 19:39:22,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-03 19:39:22,499 INFO L175 Difference]: Start difference. First operand has 380 places, 311 transitions, 2481 flow. Second operand 13 states and 151 transitions. [2024-06-03 19:39:22,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 340 transitions, 3625 flow [2024-06-03 19:39:23,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 340 transitions, 3512 flow, removed 10 selfloop flow, removed 16 redundant places. [2024-06-03 19:39:23,337 INFO L231 Difference]: Finished difference. Result has 369 places, 299 transitions, 2383 flow [2024-06-03 19:39:23,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2383, PETRI_PLACES=369, PETRI_TRANSITIONS=299} [2024-06-03 19:39:23,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-03 19:39:23,338 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 299 transitions, 2383 flow [2024-06-03 19:39:23,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:23,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:23,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:23,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 19:39:23,338 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)] === [2024-06-03 19:39:23,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:23,339 INFO L85 PathProgramCache]: Analyzing trace with hash 917262391, now seen corresponding path program 3 times [2024-06-03 19:39:23,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:23,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233275262] [2024-06-03 19:39:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:23,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233275262] [2024-06-03 19:39:24,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233275262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:24,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:24,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742696272] [2024-06-03 19:39:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:24,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:24,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:24,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:24,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:24,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:24,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 299 transitions, 2383 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:24,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:24,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:24,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:25,080 INFO L124 PetriNetUnfolderBase]: 735/1381 cut-off events. [2024-06-03 19:39:25,080 INFO L125 PetriNetUnfolderBase]: For 316495/316495 co-relation queries the response was YES. [2024-06-03 19:39:25,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9740 conditions, 1381 events. 735/1381 cut-off events. For 316495/316495 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7861 event pairs, 96 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 9572. Up to 1060 conditions per place. [2024-06-03 19:39:25,096 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 69 changer transitions 11/328 dead transitions. [2024-06-03 19:39:25,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 328 transitions, 3495 flow [2024-06-03 19:39:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-03 19:39:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-03 19:39:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 162 transitions. [2024-06-03 19:39:25,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 19:39:25,097 INFO L175 Difference]: Start difference. First operand has 369 places, 299 transitions, 2383 flow. Second operand 15 states and 162 transitions. [2024-06-03 19:39:25,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 328 transitions, 3495 flow [2024-06-03 19:39:26,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 328 transitions, 3393 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-06-03 19:39:26,040 INFO L231 Difference]: Finished difference. Result has 362 places, 293 transitions, 2385 flow [2024-06-03 19:39:26,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2385, PETRI_PLACES=362, PETRI_TRANSITIONS=293} [2024-06-03 19:39:26,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-03 19:39:26,040 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 293 transitions, 2385 flow [2024-06-03 19:39:26,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:26,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:26,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:26,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 19:39:26,041 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)] === [2024-06-03 19:39:26,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash 243364413, now seen corresponding path program 4 times [2024-06-03 19:39:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970556626] [2024-06-03 19:39:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:27,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970556626] [2024-06-03 19:39:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970556626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:27,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679434940] [2024-06-03 19:39:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:27,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:27,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:27,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 293 transitions, 2385 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:27,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:27,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:27,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:27,639 INFO L124 PetriNetUnfolderBase]: 723/1365 cut-off events. [2024-06-03 19:39:27,639 INFO L125 PetriNetUnfolderBase]: For 309400/309400 co-relation queries the response was YES. [2024-06-03 19:39:27,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9671 conditions, 1365 events. 723/1365 cut-off events. For 309400/309400 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7774 event pairs, 104 based on Foata normal form. 10/1373 useless extension candidates. Maximal degree in co-relation 9508. Up to 1137 conditions per place. [2024-06-03 19:39:27,654 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 48 changer transitions 16/316 dead transitions. [2024-06-03 19:39:27,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 316 transitions, 3153 flow [2024-06-03 19:39:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:39:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:39:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-03 19:39:27,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-03 19:39:27,655 INFO L175 Difference]: Start difference. First operand has 362 places, 293 transitions, 2385 flow. Second operand 13 states and 146 transitions. [2024-06-03 19:39:27,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 316 transitions, 3153 flow [2024-06-03 19:39:28,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 316 transitions, 3002 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-03 19:39:28,533 INFO L231 Difference]: Finished difference. Result has 357 places, 286 transitions, 2287 flow [2024-06-03 19:39:28,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2287, PETRI_PLACES=357, PETRI_TRANSITIONS=286} [2024-06-03 19:39:28,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-03 19:39:28,533 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 286 transitions, 2287 flow [2024-06-03 19:39:28,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:28,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:28,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:28,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 19:39:28,534 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)] === [2024-06-03 19:39:28,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash 243214683, now seen corresponding path program 5 times [2024-06-03 19:39:28,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:28,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249329508] [2024-06-03 19:39:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:28,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249329508] [2024-06-03 19:39:29,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249329508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:29,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:29,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165395486] [2024-06-03 19:39:29,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:29,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:29,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:29,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 286 transitions, 2287 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:29,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:29,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:29,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:30,325 INFO L124 PetriNetUnfolderBase]: 682/1290 cut-off events. [2024-06-03 19:39:30,325 INFO L125 PetriNetUnfolderBase]: For 228404/228404 co-relation queries the response was YES. [2024-06-03 19:39:30,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8182 conditions, 1290 events. 682/1290 cut-off events. For 228404/228404 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7283 event pairs, 71 based on Foata normal form. 8/1296 useless extension candidates. Maximal degree in co-relation 8020. Up to 922 conditions per place. [2024-06-03 19:39:30,339 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 32 changer transitions 42/315 dead transitions. [2024-06-03 19:39:30,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 315 transitions, 3361 flow [2024-06-03 19:39:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-03 19:39:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-03 19:39:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 155 transitions. [2024-06-03 19:39:30,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34598214285714285 [2024-06-03 19:39:30,340 INFO L175 Difference]: Start difference. First operand has 357 places, 286 transitions, 2287 flow. Second operand 14 states and 155 transitions. [2024-06-03 19:39:30,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 315 transitions, 3361 flow [2024-06-03 19:39:30,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 315 transitions, 3257 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:30,927 INFO L231 Difference]: Finished difference. Result has 355 places, 254 transitions, 1950 flow [2024-06-03 19:39:30,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1950, PETRI_PLACES=355, PETRI_TRANSITIONS=254} [2024-06-03 19:39:30,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-03 19:39:30,928 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 254 transitions, 1950 flow [2024-06-03 19:39:30,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:30,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:30,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:30,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 19:39:30,929 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)] === [2024-06-03 19:39:30,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1706086611, now seen corresponding path program 6 times [2024-06-03 19:39:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:30,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519717708] [2024-06-03 19:39:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:31,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519717708] [2024-06-03 19:39:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519717708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:31,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481353780] [2024-06-03 19:39:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:31,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:32,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:32,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 254 transitions, 1950 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:32,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:32,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:32,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:32,488 INFO L124 PetriNetUnfolderBase]: 615/1160 cut-off events. [2024-06-03 19:39:32,488 INFO L125 PetriNetUnfolderBase]: For 240753/240753 co-relation queries the response was YES. [2024-06-03 19:39:32,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7616 conditions, 1160 events. 615/1160 cut-off events. For 240753/240753 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6382 event pairs, 79 based on Foata normal form. 10/1168 useless extension candidates. Maximal degree in co-relation 7468. Up to 993 conditions per place. [2024-06-03 19:39:32,501 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 21 changer transitions 22/274 dead transitions. [2024-06-03 19:39:32,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 274 transitions, 2626 flow [2024-06-03 19:39:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 19:39:32,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:39:32,502 INFO L175 Difference]: Start difference. First operand has 355 places, 254 transitions, 1950 flow. Second operand 12 states and 132 transitions. [2024-06-03 19:39:32,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 274 transitions, 2626 flow [2024-06-03 19:39:32,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 274 transitions, 2510 flow, removed 11 selfloop flow, removed 27 redundant places. [2024-06-03 19:39:32,985 INFO L231 Difference]: Finished difference. Result has 323 places, 242 transitions, 1800 flow [2024-06-03 19:39:32,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1800, PETRI_PLACES=323, PETRI_TRANSITIONS=242} [2024-06-03 19:39:32,985 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-03 19:39:32,985 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 242 transitions, 1800 flow [2024-06-03 19:39:32,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:32,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:32,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:32,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 19:39:32,986 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)] === [2024-06-03 19:39:32,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2093705729, now seen corresponding path program 7 times [2024-06-03 19:39:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930242650] [2024-06-03 19:39:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:32,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:34,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930242650] [2024-06-03 19:39:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930242650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:34,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:34,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:34,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266297969] [2024-06-03 19:39:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:34,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:34,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:34,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 242 transitions, 1800 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:34,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:34,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:34,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:34,612 INFO L124 PetriNetUnfolderBase]: 596/1123 cut-off events. [2024-06-03 19:39:34,612 INFO L125 PetriNetUnfolderBase]: For 210430/210430 co-relation queries the response was YES. [2024-06-03 19:39:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7209 conditions, 1123 events. 596/1123 cut-off events. For 210430/210430 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6124 event pairs, 81 based on Foata normal form. 10/1131 useless extension candidates. Maximal degree in co-relation 7073. Up to 1009 conditions per place. [2024-06-03 19:39:34,624 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 19 changer transitions 17/261 dead transitions. [2024-06-03 19:39:34,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 261 transitions, 2446 flow [2024-06-03 19:39:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 19:39:34,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 19:39:34,625 INFO L175 Difference]: Start difference. First operand has 323 places, 242 transitions, 1800 flow. Second operand 12 states and 126 transitions. [2024-06-03 19:39:34,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 261 transitions, 2446 flow [2024-06-03 19:39:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 261 transitions, 2392 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:35,111 INFO L231 Difference]: Finished difference. Result has 314 places, 235 transitions, 1742 flow [2024-06-03 19:39:35,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1742, PETRI_PLACES=314, PETRI_TRANSITIONS=235} [2024-06-03 19:39:35,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-03 19:39:35,111 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 235 transitions, 1742 flow [2024-06-03 19:39:35,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:35,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:35,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:35,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 19:39:35,112 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)] === [2024-06-03 19:39:35,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2088343349, now seen corresponding path program 8 times [2024-06-03 19:39:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:35,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596944431] [2024-06-03 19:39:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:36,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596944431] [2024-06-03 19:39:36,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596944431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:36,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:36,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:36,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756819025] [2024-06-03 19:39:36,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:36,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:36,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:36,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 235 transitions, 1742 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:36,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:36,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:36,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:36,768 INFO L124 PetriNetUnfolderBase]: 553/1042 cut-off events. [2024-06-03 19:39:36,768 INFO L125 PetriNetUnfolderBase]: For 139919/139919 co-relation queries the response was YES. [2024-06-03 19:39:36,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5533 conditions, 1042 events. 553/1042 cut-off events. For 139919/139919 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5638 event pairs, 62 based on Foata normal form. 10/1050 useless extension candidates. Maximal degree in co-relation 5399. Up to 922 conditions per place. [2024-06-03 19:39:36,775 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 7 changer transitions 34/254 dead transitions. [2024-06-03 19:39:36,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 254 transitions, 2374 flow [2024-06-03 19:39:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 19:39:36,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-03 19:39:36,777 INFO L175 Difference]: Start difference. First operand has 314 places, 235 transitions, 1742 flow. Second operand 12 states and 125 transitions. [2024-06-03 19:39:36,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 254 transitions, 2374 flow [2024-06-03 19:39:37,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 254 transitions, 2324 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:37,096 INFO L231 Difference]: Finished difference. Result has 309 places, 216 transitions, 1581 flow [2024-06-03 19:39:37,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1581, PETRI_PLACES=309, PETRI_TRANSITIONS=216} [2024-06-03 19:39:37,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 19:39:37,097 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 216 transitions, 1581 flow [2024-06-03 19:39:37,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:37,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:37,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:37,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 19:39:37,097 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)] === [2024-06-03 19:39:37,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 615223869, now seen corresponding path program 9 times [2024-06-03 19:39:37,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:37,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206359290] [2024-06-03 19:39:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:37,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:38,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:38,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206359290] [2024-06-03 19:39:38,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206359290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:38,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:38,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:38,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825740683] [2024-06-03 19:39:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:38,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:38,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:38,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:38,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:38,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 216 transitions, 1581 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:38,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:38,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:38,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:38,571 INFO L124 PetriNetUnfolderBase]: 526/979 cut-off events. [2024-06-03 19:39:38,571 INFO L125 PetriNetUnfolderBase]: For 135169/135169 co-relation queries the response was YES. [2024-06-03 19:39:38,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 979 events. 526/979 cut-off events. For 135169/135169 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5195 event pairs, 57 based on Foata normal form. 10/987 useless extension candidates. Maximal degree in co-relation 5075. Up to 698 conditions per place. [2024-06-03 19:39:38,579 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 63 changer transitions 11/237 dead transitions. [2024-06-03 19:39:38,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 237 transitions, 2179 flow [2024-06-03 19:39:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 19:39:38,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:39:38,580 INFO L175 Difference]: Start difference. First operand has 309 places, 216 transitions, 1581 flow. Second operand 12 states and 147 transitions. [2024-06-03 19:39:38,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 237 transitions, 2179 flow [2024-06-03 19:39:38,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 237 transitions, 2119 flow, removed 17 selfloop flow, removed 15 redundant places. [2024-06-03 19:39:38,890 INFO L231 Difference]: Finished difference. Result has 280 places, 213 transitions, 1642 flow [2024-06-03 19:39:38,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1642, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2024-06-03 19:39:38,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-03 19:39:38,890 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 1642 flow [2024-06-03 19:39:38,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:38,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:38,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:38,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 19:39:38,891 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)] === [2024-06-03 19:39:38,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 615218289, now seen corresponding path program 10 times [2024-06-03 19:39:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:38,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378777493] [2024-06-03 19:39:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:39,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:39,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378777493] [2024-06-03 19:39:39,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378777493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:39,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:39,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166256393] [2024-06-03 19:39:39,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:39,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:39,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:39,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:39,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:39,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 1642 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:39,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:39,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:39,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:40,299 INFO L124 PetriNetUnfolderBase]: 514/959 cut-off events. [2024-06-03 19:39:40,300 INFO L125 PetriNetUnfolderBase]: For 111196/111196 co-relation queries the response was YES. [2024-06-03 19:39:40,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 959 events. 514/959 cut-off events. For 111196/111196 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5092 event pairs, 47 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 4949. Up to 688 conditions per place. [2024-06-03 19:39:40,308 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 61 changer transitions 11/233 dead transitions. [2024-06-03 19:39:40,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 233 transitions, 2186 flow [2024-06-03 19:39:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 19:39:40,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:39:40,309 INFO L175 Difference]: Start difference. First operand has 280 places, 213 transitions, 1642 flow. Second operand 12 states and 144 transitions. [2024-06-03 19:39:40,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 233 transitions, 2186 flow [2024-06-03 19:39:40,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 233 transitions, 2056 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:40,553 INFO L231 Difference]: Finished difference. Result has 278 places, 210 transitions, 1620 flow [2024-06-03 19:39:40,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1620, PETRI_PLACES=278, PETRI_TRANSITIONS=210} [2024-06-03 19:39:40,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-03 19:39:40,553 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 210 transitions, 1620 flow [2024-06-03 19:39:40,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:40,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:40,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 19:39:40,554 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)] === [2024-06-03 19:39:40,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1811333693, now seen corresponding path program 11 times [2024-06-03 19:39:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:40,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774751530] [2024-06-03 19:39:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:41,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:41,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774751530] [2024-06-03 19:39:41,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774751530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:41,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:41,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893057026] [2024-06-03 19:39:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:41,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:41,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:41,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:41,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 210 transitions, 1620 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:41,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:41,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:41,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:42,288 INFO L124 PetriNetUnfolderBase]: 511/954 cut-off events. [2024-06-03 19:39:42,289 INFO L125 PetriNetUnfolderBase]: For 121025/121025 co-relation queries the response was YES. [2024-06-03 19:39:42,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 954 events. 511/954 cut-off events. For 121025/121025 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5045 event pairs, 61 based on Foata normal form. 10/962 useless extension candidates. Maximal degree in co-relation 4979. Up to 752 conditions per place. [2024-06-03 19:39:42,297 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 41 changer transitions 11/229 dead transitions. [2024-06-03 19:39:42,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 229 transitions, 2190 flow [2024-06-03 19:39:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 19:39:42,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:39:42,299 INFO L175 Difference]: Start difference. First operand has 278 places, 210 transitions, 1620 flow. Second operand 12 states and 140 transitions. [2024-06-03 19:39:42,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 229 transitions, 2190 flow [2024-06-03 19:39:42,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 229 transitions, 2064 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:42,528 INFO L231 Difference]: Finished difference. Result has 276 places, 207 transitions, 1563 flow [2024-06-03 19:39:42,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1563, PETRI_PLACES=276, PETRI_TRANSITIONS=207} [2024-06-03 19:39:42,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-03 19:39:42,529 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 207 transitions, 1563 flow [2024-06-03 19:39:42,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:42,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:42,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:42,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-03 19:39:42,529 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)] === [2024-06-03 19:39:42,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash 611499219, now seen corresponding path program 12 times [2024-06-03 19:39:42,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:42,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099203098] [2024-06-03 19:39:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:42,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:43,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:43,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099203098] [2024-06-03 19:39:43,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099203098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:43,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:43,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:43,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871289784] [2024-06-03 19:39:43,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:43,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:43,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:43,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 207 transitions, 1563 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:43,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:43,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:43,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:44,023 INFO L124 PetriNetUnfolderBase]: 528/993 cut-off events. [2024-06-03 19:39:44,023 INFO L125 PetriNetUnfolderBase]: For 160599/160599 co-relation queries the response was YES. [2024-06-03 19:39:44,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 993 events. 528/993 cut-off events. For 160599/160599 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5257 event pairs, 72 based on Foata normal form. 8/999 useless extension candidates. Maximal degree in co-relation 6181. Up to 536 conditions per place. [2024-06-03 19:39:44,032 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 57 changer transitions 13/234 dead transitions. [2024-06-03 19:39:44,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 234 transitions, 2409 flow [2024-06-03 19:39:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-03 19:39:44,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:39:44,033 INFO L175 Difference]: Start difference. First operand has 276 places, 207 transitions, 1563 flow. Second operand 12 states and 152 transitions. [2024-06-03 19:39:44,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 234 transitions, 2409 flow [2024-06-03 19:39:44,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 234 transitions, 2319 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:44,399 INFO L231 Difference]: Finished difference. Result has 274 places, 203 transitions, 1575 flow [2024-06-03 19:39:44,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1575, PETRI_PLACES=274, PETRI_TRANSITIONS=203} [2024-06-03 19:39:44,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-03 19:39:44,403 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 203 transitions, 1575 flow [2024-06-03 19:39:44,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:44,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:44,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:44,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-03 19:39:44,404 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)] === [2024-06-03 19:39:44,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 753602289, now seen corresponding path program 13 times [2024-06-03 19:39:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:44,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920240081] [2024-06-03 19:39:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920240081] [2024-06-03 19:39:45,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920240081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:45,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411494422] [2024-06-03 19:39:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:45,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:45,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:45,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 203 transitions, 1575 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:45,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:45,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:45,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:45,854 INFO L124 PetriNetUnfolderBase]: 543/1026 cut-off events. [2024-06-03 19:39:45,855 INFO L125 PetriNetUnfolderBase]: For 210314/210314 co-relation queries the response was YES. [2024-06-03 19:39:45,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 1026 events. 543/1026 cut-off events. For 210314/210314 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5471 event pairs, 81 based on Foata normal form. 8/1032 useless extension candidates. Maximal degree in co-relation 7519. Up to 703 conditions per place. [2024-06-03 19:39:45,864 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 49 changer transitions 10/230 dead transitions. [2024-06-03 19:39:45,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 230 transitions, 2411 flow [2024-06-03 19:39:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:39:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:39:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-03 19:39:45,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-03 19:39:45,865 INFO L175 Difference]: Start difference. First operand has 274 places, 203 transitions, 1575 flow. Second operand 13 states and 158 transitions. [2024-06-03 19:39:45,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 230 transitions, 2411 flow [2024-06-03 19:39:46,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 230 transitions, 2297 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:46,432 INFO L231 Difference]: Finished difference. Result has 270 places, 200 transitions, 1547 flow [2024-06-03 19:39:46,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1547, PETRI_PLACES=270, PETRI_TRANSITIONS=200} [2024-06-03 19:39:46,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-03 19:39:46,433 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 200 transitions, 1547 flow [2024-06-03 19:39:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:46,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:46,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:46,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-03 19:39:46,434 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)] === [2024-06-03 19:39:46,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1931700023, now seen corresponding path program 14 times [2024-06-03 19:39:46,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:46,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344888981] [2024-06-03 19:39:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:46,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:47,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344888981] [2024-06-03 19:39:47,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344888981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:47,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:47,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428750111] [2024-06-03 19:39:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:47,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:47,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:47,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:47,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 200 transitions, 1547 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:47,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:47,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:47,770 INFO L124 PetriNetUnfolderBase]: 533/1008 cut-off events. [2024-06-03 19:39:47,770 INFO L125 PetriNetUnfolderBase]: For 198294/198294 co-relation queries the response was YES. [2024-06-03 19:39:47,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7494 conditions, 1008 events. 533/1008 cut-off events. For 198294/198294 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5376 event pairs, 89 based on Foata normal form. 8/1014 useless extension candidates. Maximal degree in co-relation 7377. Up to 760 conditions per place. [2024-06-03 19:39:47,779 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 50 changer transitions 15/220 dead transitions. [2024-06-03 19:39:47,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 220 transitions, 2065 flow [2024-06-03 19:39:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 19:39:47,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 19:39:47,780 INFO L175 Difference]: Start difference. First operand has 270 places, 200 transitions, 1547 flow. Second operand 12 states and 142 transitions. [2024-06-03 19:39:47,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 220 transitions, 2065 flow [2024-06-03 19:39:48,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 220 transitions, 1934 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-03 19:39:48,264 INFO L231 Difference]: Finished difference. Result has 266 places, 195 transitions, 1492 flow [2024-06-03 19:39:48,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1492, PETRI_PLACES=266, PETRI_TRANSITIONS=195} [2024-06-03 19:39:48,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-03 19:39:48,265 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 195 transitions, 1492 flow [2024-06-03 19:39:48,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:48,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:48,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:48,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-03 19:39:48,266 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)] === [2024-06-03 19:39:48,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash 753752019, now seen corresponding path program 15 times [2024-06-03 19:39:48,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:48,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839917816] [2024-06-03 19:39:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:48,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:49,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839917816] [2024-06-03 19:39:49,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839917816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:49,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:49,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:49,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780885623] [2024-06-03 19:39:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:49,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:49,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:49,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 195 transitions, 1492 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:49,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:49,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:49,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:49,565 INFO L124 PetriNetUnfolderBase]: 525/992 cut-off events. [2024-06-03 19:39:49,565 INFO L125 PetriNetUnfolderBase]: For 209014/209014 co-relation queries the response was YES. [2024-06-03 19:39:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7452 conditions, 992 events. 525/992 cut-off events. For 209014/209014 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5230 event pairs, 79 based on Foata normal form. 10/1000 useless extension candidates. Maximal degree in co-relation 7337. Up to 756 conditions per place. [2024-06-03 19:39:49,574 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 46 changer transitions 11/216 dead transitions. [2024-06-03 19:39:49,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 216 transitions, 2040 flow [2024-06-03 19:39:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 19:39:49,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 19:39:49,576 INFO L175 Difference]: Start difference. First operand has 266 places, 195 transitions, 1492 flow. Second operand 12 states and 146 transitions. [2024-06-03 19:39:49,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 216 transitions, 2040 flow [2024-06-03 19:39:50,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 216 transitions, 1928 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:50,031 INFO L231 Difference]: Finished difference. Result has 259 places, 192 transitions, 1457 flow [2024-06-03 19:39:50,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1457, PETRI_PLACES=259, PETRI_TRANSITIONS=192} [2024-06-03 19:39:50,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 19:39:50,031 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 192 transitions, 1457 flow [2024-06-03 19:39:50,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:50,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:50,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:50,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-03 19:39:50,032 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)] === [2024-06-03 19:39:50,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 759114399, now seen corresponding path program 16 times [2024-06-03 19:39:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502132328] [2024-06-03 19:39:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:50,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502132328] [2024-06-03 19:39:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502132328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:50,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661744309] [2024-06-03 19:39:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:50,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:51,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:51,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 192 transitions, 1457 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:51,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:51,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:51,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:51,379 INFO L124 PetriNetUnfolderBase]: 510/967 cut-off events. [2024-06-03 19:39:51,380 INFO L125 PetriNetUnfolderBase]: For 186519/186519 co-relation queries the response was YES. [2024-06-03 19:39:51,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 967 events. 510/967 cut-off events. For 186519/186519 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5064 event pairs, 90 based on Foata normal form. 10/975 useless extension candidates. Maximal degree in co-relation 6833. Up to 743 conditions per place. [2024-06-03 19:39:51,389 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 43 changer transitions 11/212 dead transitions. [2024-06-03 19:39:51,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 212 transitions, 1993 flow [2024-06-03 19:39:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 19:39:51,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 19:39:51,397 INFO L175 Difference]: Start difference. First operand has 259 places, 192 transitions, 1457 flow. Second operand 12 states and 142 transitions. [2024-06-03 19:39:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 212 transitions, 1993 flow [2024-06-03 19:39:51,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 212 transitions, 1897 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:51,833 INFO L231 Difference]: Finished difference. Result has 257 places, 189 transitions, 1429 flow [2024-06-03 19:39:51,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1429, PETRI_PLACES=257, PETRI_TRANSITIONS=189} [2024-06-03 19:39:51,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 19:39:51,833 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 189 transitions, 1429 flow [2024-06-03 19:39:51,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:51,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:51,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:51,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-03 19:39:51,834 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)] === [2024-06-03 19:39:51,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1427649997, now seen corresponding path program 17 times [2024-06-03 19:39:51,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:51,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379466863] [2024-06-03 19:39:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:52,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:52,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379466863] [2024-06-03 19:39:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379466863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:52,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:52,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:52,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196605658] [2024-06-03 19:39:52,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:52,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:52,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:52,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:52,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:52,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:52,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 189 transitions, 1429 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:52,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:52,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:52,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:53,309 INFO L124 PetriNetUnfolderBase]: 502/955 cut-off events. [2024-06-03 19:39:53,310 INFO L125 PetriNetUnfolderBase]: For 172662/172662 co-relation queries the response was YES. [2024-06-03 19:39:53,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 955 events. 502/955 cut-off events. For 172662/172662 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5024 event pairs, 80 based on Foata normal form. 8/961 useless extension candidates. Maximal degree in co-relation 6677. Up to 735 conditions per place. [2024-06-03 19:39:53,317 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 41 changer transitions 12/209 dead transitions. [2024-06-03 19:39:53,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 209 transitions, 1926 flow [2024-06-03 19:39:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 19:39:53,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:39:53,318 INFO L175 Difference]: Start difference. First operand has 257 places, 189 transitions, 1429 flow. Second operand 12 states and 140 transitions. [2024-06-03 19:39:53,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 209 transitions, 1926 flow [2024-06-03 19:39:53,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 209 transitions, 1836 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:53,749 INFO L231 Difference]: Finished difference. Result has 256 places, 186 transitions, 1405 flow [2024-06-03 19:39:53,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1405, PETRI_PLACES=256, PETRI_TRANSITIONS=186} [2024-06-03 19:39:53,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-03 19:39:53,750 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 186 transitions, 1405 flow [2024-06-03 19:39:53,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:53,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:53,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:53,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-03 19:39:53,750 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)] === [2024-06-03 19:39:53,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:53,751 INFO L85 PathProgramCache]: Analyzing trace with hash 65365973, now seen corresponding path program 1 times [2024-06-03 19:39:53,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:53,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595604456] [2024-06-03 19:39:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:53,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595604456] [2024-06-03 19:39:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595604456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:54,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:54,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926447151] [2024-06-03 19:39:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:54,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:54,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:54,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 186 transitions, 1405 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:54,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:54,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:55,075 INFO L124 PetriNetUnfolderBase]: 486/919 cut-off events. [2024-06-03 19:39:55,075 INFO L125 PetriNetUnfolderBase]: For 143606/143606 co-relation queries the response was YES. [2024-06-03 19:39:55,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 919 events. 486/919 cut-off events. For 143606/143606 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4790 event pairs, 84 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 6485. Up to 754 conditions per place. [2024-06-03 19:39:55,083 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2024-06-03 19:39:55,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 201 transitions, 1841 flow [2024-06-03 19:39:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 19:39:55,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 19:39:55,085 INFO L175 Difference]: Start difference. First operand has 256 places, 186 transitions, 1405 flow. Second operand 11 states and 125 transitions. [2024-06-03 19:39:55,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 201 transitions, 1841 flow [2024-06-03 19:39:55,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 201 transitions, 1749 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:39:55,497 INFO L231 Difference]: Finished difference. Result has 250 places, 187 transitions, 1407 flow [2024-06-03 19:39:55,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1407, PETRI_PLACES=250, PETRI_TRANSITIONS=187} [2024-06-03 19:39:55,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-03 19:39:55,498 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 187 transitions, 1407 flow [2024-06-03 19:39:55,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:55,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:55,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:55,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-03 19:39:55,498 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)] === [2024-06-03 19:39:55,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -141569753, now seen corresponding path program 18 times [2024-06-03 19:39:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143219187] [2024-06-03 19:39:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:56,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143219187] [2024-06-03 19:39:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143219187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253495050] [2024-06-03 19:39:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:56,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:56,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:56,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:56,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:56,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 187 transitions, 1407 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:56,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:56,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:56,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:56,947 INFO L124 PetriNetUnfolderBase]: 527/1006 cut-off events. [2024-06-03 19:39:56,947 INFO L125 PetriNetUnfolderBase]: For 205208/205208 co-relation queries the response was YES. [2024-06-03 19:39:56,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7951 conditions, 1006 events. 527/1006 cut-off events. For 205208/205208 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5348 event pairs, 91 based on Foata normal form. 8/1012 useless extension candidates. Maximal degree in co-relation 7843. Up to 706 conditions per place. [2024-06-03 19:39:56,956 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 48 changer transitions 7/213 dead transitions. [2024-06-03 19:39:56,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 213 transitions, 2185 flow [2024-06-03 19:39:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-03 19:39:56,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:39:56,957 INFO L175 Difference]: Start difference. First operand has 250 places, 187 transitions, 1407 flow. Second operand 12 states and 150 transitions. [2024-06-03 19:39:56,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 213 transitions, 2185 flow [2024-06-03 19:39:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 213 transitions, 2101 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:39:57,427 INFO L231 Difference]: Finished difference. Result has 253 places, 185 transitions, 1410 flow [2024-06-03 19:39:57,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1410, PETRI_PLACES=253, PETRI_TRANSITIONS=185} [2024-06-03 19:39:57,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-03 19:39:57,427 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 185 transitions, 1410 flow [2024-06-03 19:39:57,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:57,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:57,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:57,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-03 19:39:57,428 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)] === [2024-06-03 19:39:57,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 759108819, now seen corresponding path program 19 times [2024-06-03 19:39:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:57,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833855350] [2024-06-03 19:39:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:57,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833855350] [2024-06-03 19:39:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833855350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:58,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:58,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:39:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926194604] [2024-06-03 19:39:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:39:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:39:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:39:58,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:39:58,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 185 transitions, 1410 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:58,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:58,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:39:58,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:59,106 INFO L124 PetriNetUnfolderBase]: 499/950 cut-off events. [2024-06-03 19:39:59,106 INFO L125 PetriNetUnfolderBase]: For 175588/175588 co-relation queries the response was YES. [2024-06-03 19:39:59,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7000 conditions, 950 events. 499/950 cut-off events. For 175588/175588 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4985 event pairs, 89 based on Foata normal form. 8/956 useless extension candidates. Maximal degree in co-relation 6891. Up to 758 conditions per place. [2024-06-03 19:39:59,114 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 33 changer transitions 16/203 dead transitions. [2024-06-03 19:39:59,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 203 transitions, 1890 flow [2024-06-03 19:39:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:39:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:39:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 19:39:59,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:39:59,116 INFO L175 Difference]: Start difference. First operand has 253 places, 185 transitions, 1410 flow. Second operand 12 states and 136 transitions. [2024-06-03 19:39:59,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 203 transitions, 1890 flow [2024-06-03 19:39:59,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 203 transitions, 1792 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:39:59,494 INFO L231 Difference]: Finished difference. Result has 252 places, 179 transitions, 1348 flow [2024-06-03 19:39:59,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1348, PETRI_PLACES=252, PETRI_TRANSITIONS=179} [2024-06-03 19:39:59,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 19:39:59,495 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 179 transitions, 1348 flow [2024-06-03 19:39:59,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:59,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:59,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:59,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-03 19:39:59,495 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)] === [2024-06-03 19:39:59,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1611882173, now seen corresponding path program 20 times [2024-06-03 19:39:59,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:59,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171104399] [2024-06-03 19:39:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:59,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:00,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:00,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171104399] [2024-06-03 19:40:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171104399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:00,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:00,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:00,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258922406] [2024-06-03 19:40:00,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:00,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:00,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:00,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:00,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 179 transitions, 1348 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:00,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:00,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:00,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:01,028 INFO L124 PetriNetUnfolderBase]: 489/928 cut-off events. [2024-06-03 19:40:01,028 INFO L125 PetriNetUnfolderBase]: For 172161/172161 co-relation queries the response was YES. [2024-06-03 19:40:01,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 928 events. 489/928 cut-off events. For 172161/172161 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4826 event pairs, 69 based on Foata normal form. 8/934 useless extension candidates. Maximal degree in co-relation 6755. Up to 544 conditions per place. [2024-06-03 19:40:01,036 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 45 changer transitions 10/206 dead transitions. [2024-06-03 19:40:01,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 206 transitions, 2114 flow [2024-06-03 19:40:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:40:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:40:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-03 19:40:01,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-03 19:40:01,037 INFO L175 Difference]: Start difference. First operand has 252 places, 179 transitions, 1348 flow. Second operand 13 states and 155 transitions. [2024-06-03 19:40:01,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 206 transitions, 2114 flow [2024-06-03 19:40:01,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 206 transitions, 2014 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:01,393 INFO L231 Difference]: Finished difference. Result has 242 places, 176 transitions, 1343 flow [2024-06-03 19:40:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1343, PETRI_PLACES=242, PETRI_TRANSITIONS=176} [2024-06-03 19:40:01,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-03 19:40:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 176 transitions, 1343 flow [2024-06-03 19:40:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:01,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:01,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-03 19:40:01,394 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)] === [2024-06-03 19:40:01,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1811328113, now seen corresponding path program 21 times [2024-06-03 19:40:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839954589] [2024-06-03 19:40:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839954589] [2024-06-03 19:40:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839954589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:02,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:02,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950675939] [2024-06-03 19:40:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:02,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:02,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 176 transitions, 1343 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:02,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:02,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:02,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:03,015 INFO L124 PetriNetUnfolderBase]: 479/910 cut-off events. [2024-06-03 19:40:03,015 INFO L125 PetriNetUnfolderBase]: For 154271/154271 co-relation queries the response was YES. [2024-06-03 19:40:03,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 910 events. 479/910 cut-off events. For 154271/154271 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4730 event pairs, 89 based on Foata normal form. 8/916 useless extension candidates. Maximal degree in co-relation 6535. Up to 727 conditions per place. [2024-06-03 19:40:03,022 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 33 changer transitions 13/194 dead transitions. [2024-06-03 19:40:03,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 194 transitions, 1803 flow [2024-06-03 19:40:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 19:40:03,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:40:03,023 INFO L175 Difference]: Start difference. First operand has 242 places, 176 transitions, 1343 flow. Second operand 12 states and 135 transitions. [2024-06-03 19:40:03,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 194 transitions, 1803 flow [2024-06-03 19:40:03,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 194 transitions, 1713 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:03,313 INFO L231 Difference]: Finished difference. Result has 238 places, 172 transitions, 1297 flow [2024-06-03 19:40:03,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1297, PETRI_PLACES=238, PETRI_TRANSITIONS=172} [2024-06-03 19:40:03,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 19:40:03,314 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 172 transitions, 1297 flow [2024-06-03 19:40:03,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:03,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:03,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-03 19:40:03,314 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)] === [2024-06-03 19:40:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1612031903, now seen corresponding path program 22 times [2024-06-03 19:40:03,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:03,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816072446] [2024-06-03 19:40:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:04,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:04,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816072446] [2024-06-03 19:40:04,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816072446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:04,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:04,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:04,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184621582] [2024-06-03 19:40:04,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:04,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:04,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:04,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:04,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:04,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:04,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 172 transitions, 1297 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:04,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:04,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:04,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:04,795 INFO L124 PetriNetUnfolderBase]: 446/843 cut-off events. [2024-06-03 19:40:04,796 INFO L125 PetriNetUnfolderBase]: For 118629/118629 co-relation queries the response was YES. [2024-06-03 19:40:04,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5382 conditions, 843 events. 446/843 cut-off events. For 118629/118629 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4273 event pairs, 64 based on Foata normal form. 10/851 useless extension candidates. Maximal degree in co-relation 5281. Up to 619 conditions per place. [2024-06-03 19:40:04,801 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 38 changer transitions 14/193 dead transitions. [2024-06-03 19:40:04,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 193 transitions, 1793 flow [2024-06-03 19:40:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 19:40:04,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 19:40:04,802 INFO L175 Difference]: Start difference. First operand has 238 places, 172 transitions, 1297 flow. Second operand 12 states and 142 transitions. [2024-06-03 19:40:04,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 193 transitions, 1793 flow [2024-06-03 19:40:04,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 193 transitions, 1711 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:04,977 INFO L231 Difference]: Finished difference. Result has 232 places, 167 transitions, 1265 flow [2024-06-03 19:40:04,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1265, PETRI_PLACES=232, PETRI_TRANSITIONS=167} [2024-06-03 19:40:04,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 19:40:04,978 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 167 transitions, 1265 flow [2024-06-03 19:40:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:04,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:04,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:04,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-03 19:40:04,979 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)] === [2024-06-03 19:40:04,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1617394283, now seen corresponding path program 23 times [2024-06-03 19:40:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389298990] [2024-06-03 19:40:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:06,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389298990] [2024-06-03 19:40:06,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389298990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:06,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:06,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081001320] [2024-06-03 19:40:06,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:06,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:06,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:06,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:06,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:06,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:06,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 167 transitions, 1265 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:06,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:06,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:06,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:06,530 INFO L124 PetriNetUnfolderBase]: 429/812 cut-off events. [2024-06-03 19:40:06,530 INFO L125 PetriNetUnfolderBase]: For 103225/103225 co-relation queries the response was YES. [2024-06-03 19:40:06,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 812 events. 429/812 cut-off events. For 103225/103225 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4085 event pairs, 61 based on Foata normal form. 10/820 useless extension candidates. Maximal degree in co-relation 4837. Up to 600 conditions per place. [2024-06-03 19:40:06,536 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 37 changer transitions 11/187 dead transitions. [2024-06-03 19:40:06,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 187 transitions, 1743 flow [2024-06-03 19:40:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 19:40:06,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:40:06,537 INFO L175 Difference]: Start difference. First operand has 232 places, 167 transitions, 1265 flow. Second operand 12 states and 138 transitions. [2024-06-03 19:40:06,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 187 transitions, 1743 flow [2024-06-03 19:40:06,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 187 transitions, 1659 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:06,696 INFO L231 Difference]: Finished difference. Result has 225 places, 164 transitions, 1238 flow [2024-06-03 19:40:06,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1238, PETRI_PLACES=225, PETRI_TRANSITIONS=164} [2024-06-03 19:40:06,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 19:40:06,696 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 164 transitions, 1238 flow [2024-06-03 19:40:06,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:06,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:06,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-03 19:40:06,697 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)] === [2024-06-03 19:40:06,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1617388703, now seen corresponding path program 24 times [2024-06-03 19:40:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:06,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470467750] [2024-06-03 19:40:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:06,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470467750] [2024-06-03 19:40:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470467750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:07,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206850194] [2024-06-03 19:40:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:07,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:07,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 164 transitions, 1238 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:07,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:08,115 INFO L124 PetriNetUnfolderBase]: 395/746 cut-off events. [2024-06-03 19:40:08,115 INFO L125 PetriNetUnfolderBase]: For 63965/63965 co-relation queries the response was YES. [2024-06-03 19:40:08,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 746 events. 395/746 cut-off events. For 63965/63965 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3702 event pairs, 51 based on Foata normal form. 8/752 useless extension candidates. Maximal degree in co-relation 3797. Up to 566 conditions per place. [2024-06-03 19:40:08,120 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 29 changer transitions 15/182 dead transitions. [2024-06-03 19:40:08,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 182 transitions, 1672 flow [2024-06-03 19:40:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 19:40:08,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-03 19:40:08,121 INFO L175 Difference]: Start difference. First operand has 225 places, 164 transitions, 1238 flow. Second operand 12 states and 133 transitions. [2024-06-03 19:40:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 182 transitions, 1672 flow [2024-06-03 19:40:08,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 182 transitions, 1594 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:08,242 INFO L231 Difference]: Finished difference. Result has 223 places, 159 transitions, 1192 flow [2024-06-03 19:40:08,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1192, PETRI_PLACES=223, PETRI_TRANSITIONS=159} [2024-06-03 19:40:08,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-03 19:40:08,243 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 159 transitions, 1192 flow [2024-06-03 19:40:08,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:08,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:08,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:08,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-03 19:40:08,244 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)] === [2024-06-03 19:40:08,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -920243879, now seen corresponding path program 25 times [2024-06-03 19:40:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:08,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071221754] [2024-06-03 19:40:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:09,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071221754] [2024-06-03 19:40:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071221754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:09,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:09,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:09,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214713575] [2024-06-03 19:40:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:09,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:09,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:09,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:09,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 159 transitions, 1192 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:09,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:09,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:09,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:09,531 INFO L124 PetriNetUnfolderBase]: 415/786 cut-off events. [2024-06-03 19:40:09,532 INFO L125 PetriNetUnfolderBase]: For 93720/93720 co-relation queries the response was YES. [2024-06-03 19:40:09,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 786 events. 415/786 cut-off events. For 93720/93720 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3904 event pairs, 55 based on Foata normal form. 8/792 useless extension candidates. Maximal degree in co-relation 4817. Up to 547 conditions per place. [2024-06-03 19:40:09,538 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 38 changer transitions 7/184 dead transitions. [2024-06-03 19:40:09,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 184 transitions, 1870 flow [2024-06-03 19:40:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:40:09,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 19:40:09,539 INFO L175 Difference]: Start difference. First operand has 223 places, 159 transitions, 1192 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:40:09,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 184 transitions, 1870 flow [2024-06-03 19:40:09,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 184 transitions, 1778 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:09,682 INFO L231 Difference]: Finished difference. Result has 213 places, 157 transitions, 1185 flow [2024-06-03 19:40:09,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1185, PETRI_PLACES=213, PETRI_TRANSITIONS=157} [2024-06-03 19:40:09,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-03 19:40:09,683 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 157 transitions, 1185 flow [2024-06-03 19:40:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:09,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:09,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:09,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-03 19:40:09,684 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)] === [2024-06-03 19:40:09,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash -497752573, now seen corresponding path program 26 times [2024-06-03 19:40:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573691044] [2024-06-03 19:40:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:10,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573691044] [2024-06-03 19:40:10,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573691044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:10,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:10,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:10,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323943453] [2024-06-03 19:40:10,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:10,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:10,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 157 transitions, 1185 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:10,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:10,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:10,866 INFO L124 PetriNetUnfolderBase]: 384/725 cut-off events. [2024-06-03 19:40:10,866 INFO L125 PetriNetUnfolderBase]: For 62530/62530 co-relation queries the response was YES. [2024-06-03 19:40:10,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 725 events. 384/725 cut-off events. For 62530/62530 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3527 event pairs, 46 based on Foata normal form. 10/733 useless extension candidates. Maximal degree in co-relation 3691. Up to 547 conditions per place. [2024-06-03 19:40:10,872 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 34 changer transitions 15/177 dead transitions. [2024-06-03 19:40:10,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 177 transitions, 1637 flow [2024-06-03 19:40:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 19:40:10,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 19:40:10,873 INFO L175 Difference]: Start difference. First operand has 213 places, 157 transitions, 1185 flow. Second operand 12 states and 139 transitions. [2024-06-03 19:40:10,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 177 transitions, 1637 flow [2024-06-03 19:40:10,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 177 transitions, 1559 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:10,984 INFO L231 Difference]: Finished difference. Result has 212 places, 152 transitions, 1145 flow [2024-06-03 19:40:10,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1145, PETRI_PLACES=212, PETRI_TRANSITIONS=152} [2024-06-03 19:40:10,985 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-03 19:40:10,985 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 152 transitions, 1145 flow [2024-06-03 19:40:10,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:10,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:10,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:10,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-03 19:40:10,985 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)] === [2024-06-03 19:40:10,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:10,986 INFO L85 PathProgramCache]: Analyzing trace with hash -490124217, now seen corresponding path program 2 times [2024-06-03 19:40:10,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:10,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404234111] [2024-06-03 19:40:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:10,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:11,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404234111] [2024-06-03 19:40:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404234111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:11,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536103287] [2024-06-03 19:40:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:11,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:11,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:11,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:11,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 152 transitions, 1145 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:11,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:11,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:11,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:12,146 INFO L124 PetriNetUnfolderBase]: 362/679 cut-off events. [2024-06-03 19:40:12,146 INFO L125 PetriNetUnfolderBase]: For 39103/39103 co-relation queries the response was YES. [2024-06-03 19:40:12,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 679 events. 362/679 cut-off events. For 39103/39103 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3273 event pairs, 46 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3441. Up to 563 conditions per place. [2024-06-03 19:40:12,151 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2024-06-03 19:40:12,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 167 transitions, 1515 flow [2024-06-03 19:40:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 19:40:12,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 19:40:12,152 INFO L175 Difference]: Start difference. First operand has 212 places, 152 transitions, 1145 flow. Second operand 11 states and 123 transitions. [2024-06-03 19:40:12,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 167 transitions, 1515 flow [2024-06-03 19:40:12,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 167 transitions, 1435 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:12,255 INFO L231 Difference]: Finished difference. Result has 204 places, 153 transitions, 1147 flow [2024-06-03 19:40:12,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1147, PETRI_PLACES=204, PETRI_TRANSITIONS=153} [2024-06-03 19:40:12,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-03 19:40:12,256 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 153 transitions, 1147 flow [2024-06-03 19:40:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:12,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:12,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:12,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-03 19:40:12,256 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)] === [2024-06-03 19:40:12,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1430268843, now seen corresponding path program 3 times [2024-06-03 19:40:12,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:12,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091529781] [2024-06-03 19:40:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091529781] [2024-06-03 19:40:13,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091529781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:13,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:13,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41293488] [2024-06-03 19:40:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:13,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:13,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:13,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 153 transitions, 1147 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:13,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:13,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:13,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:13,465 INFO L124 PetriNetUnfolderBase]: 372/697 cut-off events. [2024-06-03 19:40:13,465 INFO L125 PetriNetUnfolderBase]: For 36214/36214 co-relation queries the response was YES. [2024-06-03 19:40:13,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 697 events. 372/697 cut-off events. For 36214/36214 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3373 event pairs, 48 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 3491. Up to 615 conditions per place. [2024-06-03 19:40:13,470 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2024-06-03 19:40:13,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 170 transitions, 1547 flow [2024-06-03 19:40:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 19:40:13,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 19:40:13,471 INFO L175 Difference]: Start difference. First operand has 204 places, 153 transitions, 1147 flow. Second operand 11 states and 124 transitions. [2024-06-03 19:40:13,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 170 transitions, 1547 flow [2024-06-03 19:40:13,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 170 transitions, 1471 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:40:13,562 INFO L231 Difference]: Finished difference. Result has 206 places, 156 transitions, 1167 flow [2024-06-03 19:40:13,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1167, PETRI_PLACES=206, PETRI_TRANSITIONS=156} [2024-06-03 19:40:13,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 19:40:13,562 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 156 transitions, 1167 flow [2024-06-03 19:40:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:13,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:13,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:13,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-03 19:40:13,563 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)] === [2024-06-03 19:40:13,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash -697204093, now seen corresponding path program 27 times [2024-06-03 19:40:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140574050] [2024-06-03 19:40:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140574050] [2024-06-03 19:40:14,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140574050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:14,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:14,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:14,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85069368] [2024-06-03 19:40:14,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:14,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:14,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:14,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:14,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:14,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 156 transitions, 1167 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:14,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:14,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:14,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:14,852 INFO L124 PetriNetUnfolderBase]: 413/784 cut-off events. [2024-06-03 19:40:14,852 INFO L125 PetriNetUnfolderBase]: For 78293/78293 co-relation queries the response was YES. [2024-06-03 19:40:14,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4710 conditions, 784 events. 413/784 cut-off events. For 78293/78293 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3870 event pairs, 59 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 4623. Up to 506 conditions per place. [2024-06-03 19:40:14,858 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 40 changer transitions 10/182 dead transitions. [2024-06-03 19:40:14,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 182 transitions, 1815 flow [2024-06-03 19:40:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-03 19:40:14,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:40:14,859 INFO L175 Difference]: Start difference. First operand has 206 places, 156 transitions, 1167 flow. Second operand 12 states and 148 transitions. [2024-06-03 19:40:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 182 transitions, 1815 flow [2024-06-03 19:40:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 182 transitions, 1756 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:40:14,977 INFO L231 Difference]: Finished difference. Result has 211 places, 153 transitions, 1175 flow [2024-06-03 19:40:14,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1175, PETRI_PLACES=211, PETRI_TRANSITIONS=153} [2024-06-03 19:40:14,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-03 19:40:14,978 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 153 transitions, 1175 flow [2024-06-03 19:40:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:14,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:14,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-03 19:40:14,978 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)] === [2024-06-03 19:40:14,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash -697059943, now seen corresponding path program 28 times [2024-06-03 19:40:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57202687] [2024-06-03 19:40:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:15,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57202687] [2024-06-03 19:40:15,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57202687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:15,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:15,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:15,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586051687] [2024-06-03 19:40:15,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:15,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:15,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:15,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:15,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 153 transitions, 1175 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:15,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:15,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:15,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:16,297 INFO L124 PetriNetUnfolderBase]: 436/833 cut-off events. [2024-06-03 19:40:16,297 INFO L125 PetriNetUnfolderBase]: For 107173/107173 co-relation queries the response was YES. [2024-06-03 19:40:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 833 events. 436/833 cut-off events. For 107173/107173 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4144 event pairs, 72 based on Foata normal form. 8/839 useless extension candidates. Maximal degree in co-relation 5649. Up to 581 conditions per place. [2024-06-03 19:40:16,303 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 40 changer transitions 7/180 dead transitions. [2024-06-03 19:40:16,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 180 transitions, 1824 flow [2024-06-03 19:40:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 19:40:16,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 19:40:16,304 INFO L175 Difference]: Start difference. First operand has 211 places, 153 transitions, 1175 flow. Second operand 12 states and 149 transitions. [2024-06-03 19:40:16,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 180 transitions, 1824 flow [2024-06-03 19:40:16,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 1738 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:16,475 INFO L231 Difference]: Finished difference. Result has 209 places, 152 transitions, 1172 flow [2024-06-03 19:40:16,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2024-06-03 19:40:16,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-03 19:40:16,476 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1172 flow [2024-06-03 19:40:16,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:16,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:16,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-03 19:40:16,476 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)] === [2024-06-03 19:40:16,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1430259543, now seen corresponding path program 4 times [2024-06-03 19:40:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939736764] [2024-06-03 19:40:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939736764] [2024-06-03 19:40:17,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939736764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:17,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:17,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241661310] [2024-06-03 19:40:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:17,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:17,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:17,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1172 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:17,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:17,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:17,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:17,677 INFO L124 PetriNetUnfolderBase]: 429/816 cut-off events. [2024-06-03 19:40:17,677 INFO L125 PetriNetUnfolderBase]: For 92144/92144 co-relation queries the response was YES. [2024-06-03 19:40:17,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 816 events. 429/816 cut-off events. For 92144/92144 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4081 event pairs, 85 based on Foata normal form. 2/816 useless extension candidates. Maximal degree in co-relation 5697. Up to 711 conditions per place. [2024-06-03 19:40:17,683 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 30 changer transitions 0/169 dead transitions. [2024-06-03 19:40:17,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 169 transitions, 1710 flow [2024-06-03 19:40:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 19:40:17,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 19:40:17,684 INFO L175 Difference]: Start difference. First operand has 209 places, 152 transitions, 1172 flow. Second operand 11 states and 125 transitions. [2024-06-03 19:40:17,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 169 transitions, 1710 flow [2024-06-03 19:40:17,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 169 transitions, 1624 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:17,872 INFO L231 Difference]: Finished difference. Result has 208 places, 154 transitions, 1182 flow [2024-06-03 19:40:17,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1182, PETRI_PLACES=208, PETRI_TRANSITIONS=154} [2024-06-03 19:40:17,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-03 19:40:17,882 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 154 transitions, 1182 flow [2024-06-03 19:40:17,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:17,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:17,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:17,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-03 19:40:17,882 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)] === [2024-06-03 19:40:17,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash -691691983, now seen corresponding path program 29 times [2024-06-03 19:40:17,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:17,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226200657] [2024-06-03 19:40:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:18,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226200657] [2024-06-03 19:40:18,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226200657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:18,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:18,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024970869] [2024-06-03 19:40:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:18,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:18,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:18,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 154 transitions, 1182 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:18,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:18,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:18,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:19,241 INFO L124 PetriNetUnfolderBase]: 438/839 cut-off events. [2024-06-03 19:40:19,241 INFO L125 PetriNetUnfolderBase]: For 106752/106752 co-relation queries the response was YES. [2024-06-03 19:40:19,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 839 events. 438/839 cut-off events. For 106752/106752 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4258 event pairs, 90 based on Foata normal form. 10/847 useless extension candidates. Maximal degree in co-relation 5633. Up to 682 conditions per place. [2024-06-03 19:40:19,247 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 32 changer transitions 11/173 dead transitions. [2024-06-03 19:40:19,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 173 transitions, 1620 flow [2024-06-03 19:40:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 19:40:19,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:40:19,249 INFO L175 Difference]: Start difference. First operand has 208 places, 154 transitions, 1182 flow. Second operand 12 states and 138 transitions. [2024-06-03 19:40:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 173 transitions, 1620 flow [2024-06-03 19:40:19,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 173 transitions, 1571 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:40:19,402 INFO L231 Difference]: Finished difference. Result has 213 places, 151 transitions, 1180 flow [2024-06-03 19:40:19,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1180, PETRI_PLACES=213, PETRI_TRANSITIONS=151} [2024-06-03 19:40:19,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-03 19:40:19,403 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 151 transitions, 1180 flow [2024-06-03 19:40:19,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:19,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:19,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:19,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-03 19:40:19,403 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)] === [2024-06-03 19:40:19,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash -691697563, now seen corresponding path program 30 times [2024-06-03 19:40:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:19,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014789142] [2024-06-03 19:40:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:20,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:20,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014789142] [2024-06-03 19:40:20,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014789142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:20,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:20,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795558594] [2024-06-03 19:40:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:20,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:20,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:20,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 151 transitions, 1180 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:20,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:20,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:20,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:21,116 INFO L124 PetriNetUnfolderBase]: 404/773 cut-off events. [2024-06-03 19:40:21,116 INFO L125 PetriNetUnfolderBase]: For 83647/83647 co-relation queries the response was YES. [2024-06-03 19:40:21,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 773 events. 404/773 cut-off events. For 83647/83647 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3798 event pairs, 68 based on Foata normal form. 8/779 useless extension candidates. Maximal degree in co-relation 4800. Up to 626 conditions per place. [2024-06-03 19:40:21,121 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 29 changer transitions 13/169 dead transitions. [2024-06-03 19:40:21,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 169 transitions, 1584 flow [2024-06-03 19:40:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 19:40:21,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:40:21,122 INFO L175 Difference]: Start difference. First operand has 213 places, 151 transitions, 1180 flow. Second operand 12 states and 135 transitions. [2024-06-03 19:40:21,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 169 transitions, 1584 flow [2024-06-03 19:40:21,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 169 transitions, 1516 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:21,260 INFO L231 Difference]: Finished difference. Result has 211 places, 147 transitions, 1145 flow [2024-06-03 19:40:21,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1145, PETRI_PLACES=211, PETRI_TRANSITIONS=147} [2024-06-03 19:40:21,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-03 19:40:21,261 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 147 transitions, 1145 flow [2024-06-03 19:40:21,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:21,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:21,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:21,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-03 19:40:21,262 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)] === [2024-06-03 19:40:21,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1201778359, now seen corresponding path program 31 times [2024-06-03 19:40:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:21,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008535476] [2024-06-03 19:40:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008535476] [2024-06-03 19:40:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008535476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:22,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:22,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432631506] [2024-06-03 19:40:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:22,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:22,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:22,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:22,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 147 transitions, 1145 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:22,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:22,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:22,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:22,895 INFO L124 PetriNetUnfolderBase]: 406/775 cut-off events. [2024-06-03 19:40:22,895 INFO L125 PetriNetUnfolderBase]: For 86788/86788 co-relation queries the response was YES. [2024-06-03 19:40:22,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 775 events. 406/775 cut-off events. For 86788/86788 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3816 event pairs, 70 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 4816. Up to 639 conditions per place. [2024-06-03 19:40:22,901 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 24 changer transitions 16/169 dead transitions. [2024-06-03 19:40:22,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 169 transitions, 1591 flow [2024-06-03 19:40:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 19:40:22,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:40:22,902 INFO L175 Difference]: Start difference. First operand has 211 places, 147 transitions, 1145 flow. Second operand 12 states and 138 transitions. [2024-06-03 19:40:22,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 169 transitions, 1591 flow [2024-06-03 19:40:23,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 169 transitions, 1517 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:23,020 INFO L231 Difference]: Finished difference. Result has 206 places, 143 transitions, 1094 flow [2024-06-03 19:40:23,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1094, PETRI_PLACES=206, PETRI_TRANSITIONS=143} [2024-06-03 19:40:23,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 19:40:23,020 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 143 transitions, 1094 flow [2024-06-03 19:40:23,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:23,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:23,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-03 19:40:23,021 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)] === [2024-06-03 19:40:23,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1437678153, now seen corresponding path program 5 times [2024-06-03 19:40:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:23,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642316903] [2024-06-03 19:40:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:23,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642316903] [2024-06-03 19:40:23,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642316903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:23,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150337257] [2024-06-03 19:40:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:23,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:24,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:24,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 143 transitions, 1094 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:24,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:24,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:24,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:24,302 INFO L124 PetriNetUnfolderBase]: 367/702 cut-off events. [2024-06-03 19:40:24,302 INFO L125 PetriNetUnfolderBase]: For 56651/56651 co-relation queries the response was YES. [2024-06-03 19:40:24,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 702 events. 367/702 cut-off events. For 56651/56651 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3371 event pairs, 65 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4232. Up to 628 conditions per place. [2024-06-03 19:40:24,307 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 25 changer transitions 0/157 dead transitions. [2024-06-03 19:40:24,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 157 transitions, 1434 flow [2024-06-03 19:40:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 19:40:24,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 19:40:24,308 INFO L175 Difference]: Start difference. First operand has 206 places, 143 transitions, 1094 flow. Second operand 11 states and 124 transitions. [2024-06-03 19:40:24,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 157 transitions, 1434 flow [2024-06-03 19:40:24,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 157 transitions, 1366 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:24,403 INFO L231 Difference]: Finished difference. Result has 201 places, 143 transitions, 1080 flow [2024-06-03 19:40:24,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=201, PETRI_TRANSITIONS=143} [2024-06-03 19:40:24,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 19:40:24,404 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 143 transitions, 1080 flow [2024-06-03 19:40:24,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:24,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:24,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:24,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-03 19:40:24,404 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)] === [2024-06-03 19:40:24,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash -697054363, now seen corresponding path program 32 times [2024-06-03 19:40:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816285925] [2024-06-03 19:40:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:24,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:25,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:25,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816285925] [2024-06-03 19:40:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816285925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:25,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:25,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73356051] [2024-06-03 19:40:25,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:25,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:25,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:25,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 143 transitions, 1080 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:25,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:25,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:25,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:25,880 INFO L124 PetriNetUnfolderBase]: 354/679 cut-off events. [2024-06-03 19:40:25,880 INFO L125 PetriNetUnfolderBase]: For 50272/50272 co-relation queries the response was YES. [2024-06-03 19:40:25,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3491 conditions, 679 events. 354/679 cut-off events. For 50272/50272 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3267 event pairs, 44 based on Foata normal form. 10/687 useless extension candidates. Maximal degree in co-relation 3408. Up to 508 conditions per place. [2024-06-03 19:40:25,885 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 30 changer transitions 17/164 dead transitions. [2024-06-03 19:40:25,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 164 transitions, 1500 flow [2024-06-03 19:40:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:40:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:40:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-03 19:40:25,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-03 19:40:25,886 INFO L175 Difference]: Start difference. First operand has 201 places, 143 transitions, 1080 flow. Second operand 13 states and 146 transitions. [2024-06-03 19:40:25,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 164 transitions, 1500 flow [2024-06-03 19:40:25,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 164 transitions, 1442 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:25,980 INFO L231 Difference]: Finished difference. Result has 203 places, 137 transitions, 1046 flow [2024-06-03 19:40:25,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1046, PETRI_PLACES=203, PETRI_TRANSITIONS=137} [2024-06-03 19:40:25,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-03 19:40:25,981 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 137 transitions, 1046 flow [2024-06-03 19:40:25,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:25,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:25,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:25,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-03 19:40:25,981 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)] === [2024-06-03 19:40:25,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1194426709, now seen corresponding path program 33 times [2024-06-03 19:40:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840781559] [2024-06-03 19:40:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:26,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:26,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840781559] [2024-06-03 19:40:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840781559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:26,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:26,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369089095] [2024-06-03 19:40:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:26,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:26,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:26,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:26,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 137 transitions, 1046 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:26,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:26,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:26,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:27,317 INFO L124 PetriNetUnfolderBase]: 343/658 cut-off events. [2024-06-03 19:40:27,318 INFO L125 PetriNetUnfolderBase]: For 51686/51686 co-relation queries the response was YES. [2024-06-03 19:40:27,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 658 events. 343/658 cut-off events. For 51686/51686 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3126 event pairs, 44 based on Foata normal form. 10/666 useless extension candidates. Maximal degree in co-relation 3338. Up to 509 conditions per place. [2024-06-03 19:40:27,322 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 30 changer transitions 11/159 dead transitions. [2024-06-03 19:40:27,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 159 transitions, 1458 flow [2024-06-03 19:40:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 19:40:27,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 19:40:27,323 INFO L175 Difference]: Start difference. First operand has 203 places, 137 transitions, 1046 flow. Second operand 12 states and 142 transitions. [2024-06-03 19:40:27,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 159 transitions, 1458 flow [2024-06-03 19:40:27,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 159 transitions, 1388 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:27,398 INFO L231 Difference]: Finished difference. Result has 192 places, 134 transitions, 1019 flow [2024-06-03 19:40:27,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1019, PETRI_PLACES=192, PETRI_TRANSITIONS=134} [2024-06-03 19:40:27,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 19:40:27,399 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 134 transitions, 1019 flow [2024-06-03 19:40:27,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:27,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:27,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:27,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-03 19:40:27,399 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)] === [2024-06-03 19:40:27,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1555334247, now seen corresponding path program 34 times [2024-06-03 19:40:27,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:27,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126312342] [2024-06-03 19:40:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:27,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126312342] [2024-06-03 19:40:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126312342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:28,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273977576] [2024-06-03 19:40:28,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:28,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:28,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:28,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 134 transitions, 1019 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:28,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:28,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:28,985 INFO L124 PetriNetUnfolderBase]: 335/646 cut-off events. [2024-06-03 19:40:28,986 INFO L125 PetriNetUnfolderBase]: For 45968/45968 co-relation queries the response was YES. [2024-06-03 19:40:28,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 646 events. 335/646 cut-off events. For 45968/45968 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3066 event pairs, 42 based on Foata normal form. 10/654 useless extension candidates. Maximal degree in co-relation 3244. Up to 469 conditions per place. [2024-06-03 19:40:28,990 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 102 selfloop transitions, 41 changer transitions 11/156 dead transitions. [2024-06-03 19:40:28,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 156 transitions, 1425 flow [2024-06-03 19:40:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:40:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:40:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-03 19:40:28,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-03 19:40:28,991 INFO L175 Difference]: Start difference. First operand has 192 places, 134 transitions, 1019 flow. Second operand 13 states and 151 transitions. [2024-06-03 19:40:28,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 156 transitions, 1425 flow [2024-06-03 19:40:29,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1353 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:29,059 INFO L231 Difference]: Finished difference. Result has 191 places, 131 transitions, 1019 flow [2024-06-03 19:40:29,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1019, PETRI_PLACES=191, PETRI_TRANSITIONS=131} [2024-06-03 19:40:29,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-03 19:40:29,059 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 131 transitions, 1019 flow [2024-06-03 19:40:29,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:29,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:29,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:29,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-03 19:40:29,060 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)] === [2024-06-03 19:40:29,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1694012127, now seen corresponding path program 35 times [2024-06-03 19:40:29,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:29,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905377656] [2024-06-03 19:40:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:29,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:30,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:30,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905377656] [2024-06-03 19:40:30,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905377656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:30,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:30,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197069555] [2024-06-03 19:40:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:30,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:30,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:30,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:30,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:30,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 131 transitions, 1019 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:30,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:30,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:30,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:30,723 INFO L124 PetriNetUnfolderBase]: 365/708 cut-off events. [2024-06-03 19:40:30,723 INFO L125 PetriNetUnfolderBase]: For 60478/60478 co-relation queries the response was YES. [2024-06-03 19:40:30,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 708 events. 365/708 cut-off events. For 60478/60478 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3420 event pairs, 55 based on Foata normal form. 8/714 useless extension candidates. Maximal degree in co-relation 4128. Up to 391 conditions per place. [2024-06-03 19:40:30,728 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 94 selfloop transitions, 60 changer transitions 10/166 dead transitions. [2024-06-03 19:40:30,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 166 transitions, 1660 flow [2024-06-03 19:40:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-03 19:40:30,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:40:30,729 INFO L175 Difference]: Start difference. First operand has 191 places, 131 transitions, 1019 flow. Second operand 12 states and 150 transitions. [2024-06-03 19:40:30,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 166 transitions, 1660 flow [2024-06-03 19:40:30,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 1550 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:30,807 INFO L231 Difference]: Finished difference. Result has 193 places, 137 transitions, 1172 flow [2024-06-03 19:40:30,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=193, PETRI_TRANSITIONS=137} [2024-06-03 19:40:30,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-03 19:40:30,807 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 137 transitions, 1172 flow [2024-06-03 19:40:30,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:30,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:30,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:30,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-03 19:40:30,808 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)] === [2024-06-03 19:40:30,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1637189689, now seen corresponding path program 36 times [2024-06-03 19:40:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967395884] [2024-06-03 19:40:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:31,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967395884] [2024-06-03 19:40:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967395884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:31,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132188833] [2024-06-03 19:40:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:32,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:32,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 137 transitions, 1172 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:32,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:32,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:32,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:32,410 INFO L124 PetriNetUnfolderBase]: 359/698 cut-off events. [2024-06-03 19:40:32,410 INFO L125 PetriNetUnfolderBase]: For 62951/62951 co-relation queries the response was YES. [2024-06-03 19:40:32,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 698 events. 359/698 cut-off events. For 62951/62951 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3386 event pairs, 61 based on Foata normal form. 10/706 useless extension candidates. Maximal degree in co-relation 4314. Up to 502 conditions per place. [2024-06-03 19:40:32,415 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 92 selfloop transitions, 52 changer transitions 11/157 dead transitions. [2024-06-03 19:40:32,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 157 transitions, 1578 flow [2024-06-03 19:40:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 19:40:32,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:40:32,416 INFO L175 Difference]: Start difference. First operand has 193 places, 137 transitions, 1172 flow. Second operand 12 states and 140 transitions. [2024-06-03 19:40:32,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 157 transitions, 1578 flow [2024-06-03 19:40:32,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 157 transitions, 1528 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:40:32,500 INFO L231 Difference]: Finished difference. Result has 195 places, 134 transitions, 1208 flow [2024-06-03 19:40:32,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1208, PETRI_PLACES=195, PETRI_TRANSITIONS=134} [2024-06-03 19:40:32,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-03 19:40:32,500 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 134 transitions, 1208 flow [2024-06-03 19:40:32,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:32,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:32,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:32,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-03 19:40:32,501 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)] === [2024-06-03 19:40:32,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1549971867, now seen corresponding path program 37 times [2024-06-03 19:40:32,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:32,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933573816] [2024-06-03 19:40:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:32,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:33,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933573816] [2024-06-03 19:40:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933573816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:33,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:33,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:33,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846709112] [2024-06-03 19:40:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:33,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:33,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:33,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 134 transitions, 1208 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:33,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:33,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:33,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:34,064 INFO L124 PetriNetUnfolderBase]: 351/686 cut-off events. [2024-06-03 19:40:34,064 INFO L125 PetriNetUnfolderBase]: For 61120/61120 co-relation queries the response was YES. [2024-06-03 19:40:34,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 686 events. 351/686 cut-off events. For 61120/61120 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3304 event pairs, 65 based on Foata normal form. 10/694 useless extension candidates. Maximal degree in co-relation 4276. Up to 543 conditions per place. [2024-06-03 19:40:34,069 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 109 selfloop transitions, 31 changer transitions 11/153 dead transitions. [2024-06-03 19:40:34,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 153 transitions, 1602 flow [2024-06-03 19:40:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 19:40:34,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 19:40:34,070 INFO L175 Difference]: Start difference. First operand has 195 places, 134 transitions, 1208 flow. Second operand 12 states and 137 transitions. [2024-06-03 19:40:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 153 transitions, 1602 flow [2024-06-03 19:40:34,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 153 transitions, 1494 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:34,165 INFO L231 Difference]: Finished difference. Result has 193 places, 131 transitions, 1143 flow [2024-06-03 19:40:34,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1143, PETRI_PLACES=193, PETRI_TRANSITIONS=131} [2024-06-03 19:40:34,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-03 19:40:34,165 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 131 transitions, 1143 flow [2024-06-03 19:40:34,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:34,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-03 19:40:34,166 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)] === [2024-06-03 19:40:34,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1194421129, now seen corresponding path program 38 times [2024-06-03 19:40:34,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594252178] [2024-06-03 19:40:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594252178] [2024-06-03 19:40:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594252178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472281506] [2024-06-03 19:40:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:35,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:35,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 131 transitions, 1143 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:35,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:35,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:35,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:35,672 INFO L124 PetriNetUnfolderBase]: 368/725 cut-off events. [2024-06-03 19:40:35,673 INFO L125 PetriNetUnfolderBase]: For 73489/73489 co-relation queries the response was YES. [2024-06-03 19:40:35,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 725 events. 368/725 cut-off events. For 73489/73489 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3552 event pairs, 74 based on Foata normal form. 8/731 useless extension candidates. Maximal degree in co-relation 4960. Up to 517 conditions per place. [2024-06-03 19:40:35,678 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 32 changer transitions 8/156 dead transitions. [2024-06-03 19:40:35,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 156 transitions, 1707 flow [2024-06-03 19:40:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 19:40:35,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:40:35,679 INFO L175 Difference]: Start difference. First operand has 193 places, 131 transitions, 1143 flow. Second operand 12 states and 144 transitions. [2024-06-03 19:40:35,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 156 transitions, 1707 flow [2024-06-03 19:40:35,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1627 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:35,802 INFO L231 Difference]: Finished difference. Result has 191 places, 128 transitions, 1108 flow [2024-06-03 19:40:35,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1108, PETRI_PLACES=191, PETRI_TRANSITIONS=128} [2024-06-03 19:40:35,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-03 19:40:35,803 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 128 transitions, 1108 flow [2024-06-03 19:40:35,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:35,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:35,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:35,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-03 19:40:35,804 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)] === [2024-06-03 19:40:35,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1697587047, now seen corresponding path program 39 times [2024-06-03 19:40:35,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:35,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769661799] [2024-06-03 19:40:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:35,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:36,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769661799] [2024-06-03 19:40:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769661799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:36,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:36,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:36,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858568003] [2024-06-03 19:40:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:36,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:36,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 128 transitions, 1108 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:36,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:36,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:36,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:37,326 INFO L124 PetriNetUnfolderBase]: 383/758 cut-off events. [2024-06-03 19:40:37,326 INFO L125 PetriNetUnfolderBase]: For 85375/85375 co-relation queries the response was YES. [2024-06-03 19:40:37,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5603 conditions, 758 events. 383/758 cut-off events. For 85375/85375 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3751 event pairs, 78 based on Foata normal form. 8/764 useless extension candidates. Maximal degree in co-relation 5524. Up to 315 conditions per place. [2024-06-03 19:40:37,332 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 87 selfloop transitions, 52 changer transitions 13/154 dead transitions. [2024-06-03 19:40:37,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 154 transitions, 1660 flow [2024-06-03 19:40:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-03 19:40:37,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:40:37,333 INFO L175 Difference]: Start difference. First operand has 191 places, 128 transitions, 1108 flow. Second operand 12 states and 148 transitions. [2024-06-03 19:40:37,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 154 transitions, 1660 flow [2024-06-03 19:40:37,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 154 transitions, 1588 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:37,432 INFO L231 Difference]: Finished difference. Result has 189 places, 124 transitions, 1125 flow [2024-06-03 19:40:37,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1125, PETRI_PLACES=189, PETRI_TRANSITIONS=124} [2024-06-03 19:40:37,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 19:40:37,433 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 124 transitions, 1125 flow [2024-06-03 19:40:37,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:37,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:37,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-03 19:40:37,433 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)] === [2024-06-03 19:40:37,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1693867977, now seen corresponding path program 40 times [2024-06-03 19:40:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310988472] [2024-06-03 19:40:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:38,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:38,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310988472] [2024-06-03 19:40:38,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310988472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:38,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:38,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:38,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058724254] [2024-06-03 19:40:38,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:38,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:38,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:38,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 124 transitions, 1125 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:38,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:39,028 INFO L124 PetriNetUnfolderBase]: 369/732 cut-off events. [2024-06-03 19:40:39,028 INFO L125 PetriNetUnfolderBase]: For 82641/82641 co-relation queries the response was YES. [2024-06-03 19:40:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 732 events. 369/732 cut-off events. For 82641/82641 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3621 event pairs, 76 based on Foata normal form. 8/738 useless extension candidates. Maximal degree in co-relation 5466. Up to 448 conditions per place. [2024-06-03 19:40:39,033 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 87 selfloop transitions, 53 changer transitions 7/149 dead transitions. [2024-06-03 19:40:39,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 149 transitions, 1665 flow [2024-06-03 19:40:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 19:40:39,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 19:40:39,034 INFO L175 Difference]: Start difference. First operand has 189 places, 124 transitions, 1125 flow. Second operand 12 states and 147 transitions. [2024-06-03 19:40:39,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 149 transitions, 1665 flow [2024-06-03 19:40:39,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 149 transitions, 1565 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:39,129 INFO L231 Difference]: Finished difference. Result has 184 places, 122 transitions, 1126 flow [2024-06-03 19:40:39,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1126, PETRI_PLACES=184, PETRI_TRANSITIONS=122} [2024-06-03 19:40:39,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-03 19:40:39,130 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 122 transitions, 1126 flow [2024-06-03 19:40:39,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:39,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:39,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:39,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-03 19:40:39,130 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)] === [2024-06-03 19:40:39,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1693862397, now seen corresponding path program 41 times [2024-06-03 19:40:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184290556] [2024-06-03 19:40:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:40,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184290556] [2024-06-03 19:40:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184290556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:40,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76205205] [2024-06-03 19:40:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:40,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:40,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:40,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:40,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:40,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:40,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 122 transitions, 1126 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:40,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:40,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:40,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:40,556 INFO L124 PetriNetUnfolderBase]: 338/671 cut-off events. [2024-06-03 19:40:40,556 INFO L125 PetriNetUnfolderBase]: For 62410/62410 co-relation queries the response was YES. [2024-06-03 19:40:40,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4679 conditions, 671 events. 338/671 cut-off events. For 62410/62410 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3229 event pairs, 71 based on Foata normal form. 10/679 useless extension candidates. Maximal degree in co-relation 4604. Up to 473 conditions per place. [2024-06-03 19:40:40,560 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 83 selfloop transitions, 41 changer transitions 16/142 dead transitions. [2024-06-03 19:40:40,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 142 transitions, 1498 flow [2024-06-03 19:40:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 19:40:40,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 19:40:40,562 INFO L175 Difference]: Start difference. First operand has 184 places, 122 transitions, 1126 flow. Second operand 12 states and 140 transitions. [2024-06-03 19:40:40,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 142 transitions, 1498 flow [2024-06-03 19:40:40,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 142 transitions, 1384 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:40,640 INFO L231 Difference]: Finished difference. Result has 183 places, 116 transitions, 1051 flow [2024-06-03 19:40:40,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1051, PETRI_PLACES=183, PETRI_TRANSITIONS=116} [2024-06-03 19:40:40,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-03 19:40:40,641 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 116 transitions, 1051 flow [2024-06-03 19:40:40,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:40,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:40,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:40,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-03 19:40:40,641 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)] === [2024-06-03 19:40:40,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1549977447, now seen corresponding path program 42 times [2024-06-03 19:40:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:40,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972676531] [2024-06-03 19:40:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:40,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972676531] [2024-06-03 19:40:41,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972676531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:41,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:41,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:41,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994172878] [2024-06-03 19:40:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:41,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:41,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:41,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:41,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 116 transitions, 1051 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:41,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:41,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:41,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:42,146 INFO L124 PetriNetUnfolderBase]: 323/642 cut-off events. [2024-06-03 19:40:42,146 INFO L125 PetriNetUnfolderBase]: For 58950/58950 co-relation queries the response was YES. [2024-06-03 19:40:42,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 642 events. 323/642 cut-off events. For 58950/58950 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3056 event pairs, 71 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 4418. Up to 509 conditions per place. [2024-06-03 19:40:42,151 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 26 changer transitions 13/134 dead transitions. [2024-06-03 19:40:42,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 134 transitions, 1383 flow [2024-06-03 19:40:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 19:40:42,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 19:40:42,152 INFO L175 Difference]: Start difference. First operand has 183 places, 116 transitions, 1051 flow. Second operand 12 states and 134 transitions. [2024-06-03 19:40:42,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 134 transitions, 1383 flow [2024-06-03 19:40:42,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 134 transitions, 1289 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:42,225 INFO L231 Difference]: Finished difference. Result has 173 places, 112 transitions, 974 flow [2024-06-03 19:40:42,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=974, PETRI_PLACES=173, PETRI_TRANSITIONS=112} [2024-06-03 19:40:42,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-03 19:40:42,226 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 112 transitions, 974 flow [2024-06-03 19:40:42,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:42,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:42,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:42,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-03 19:40:42,226 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)] === [2024-06-03 19:40:42,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1437686089, now seen corresponding path program 43 times [2024-06-03 19:40:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:42,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295615606] [2024-06-03 19:40:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:42,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:43,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295615606] [2024-06-03 19:40:43,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295615606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:43,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:43,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110784458] [2024-06-03 19:40:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:43,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:43,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:43,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 112 transitions, 974 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:43,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:43,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:43,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:43,608 INFO L124 PetriNetUnfolderBase]: 290/575 cut-off events. [2024-06-03 19:40:43,608 INFO L125 PetriNetUnfolderBase]: For 40528/40528 co-relation queries the response was YES. [2024-06-03 19:40:43,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 575 events. 290/575 cut-off events. For 40528/40528 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2636 event pairs, 56 based on Foata normal form. 10/583 useless extension candidates. Maximal degree in co-relation 3456. Up to 457 conditions per place. [2024-06-03 19:40:43,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 22 changer transitions 11/132 dead transitions. [2024-06-03 19:40:43,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 132 transitions, 1324 flow [2024-06-03 19:40:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 19:40:43,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:40:43,613 INFO L175 Difference]: Start difference. First operand has 173 places, 112 transitions, 974 flow. Second operand 12 states and 136 transitions. [2024-06-03 19:40:43,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 132 transitions, 1324 flow [2024-06-03 19:40:43,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 132 transitions, 1256 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:43,666 INFO L231 Difference]: Finished difference. Result has 167 places, 109 transitions, 922 flow [2024-06-03 19:40:43,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=922, PETRI_PLACES=167, PETRI_TRANSITIONS=109} [2024-06-03 19:40:43,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-03 19:40:43,667 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 109 transitions, 922 flow [2024-06-03 19:40:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:43,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:43,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:43,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-03 19:40:43,668 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)] === [2024-06-03 19:40:43,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash 391764329, now seen corresponding path program 44 times [2024-06-03 19:40:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:43,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869430224] [2024-06-03 19:40:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869430224] [2024-06-03 19:40:44,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869430224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:44,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:44,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:44,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343932483] [2024-06-03 19:40:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:44,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:44,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 109 transitions, 922 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:44,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:44,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:44,965 INFO L124 PetriNetUnfolderBase]: 276/553 cut-off events. [2024-06-03 19:40:44,965 INFO L125 PetriNetUnfolderBase]: For 34920/34920 co-relation queries the response was YES. [2024-06-03 19:40:44,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 553 events. 276/553 cut-off events. For 34920/34920 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2526 event pairs, 46 based on Foata normal form. 8/559 useless extension candidates. Maximal degree in co-relation 3234. Up to 394 conditions per place. [2024-06-03 19:40:44,969 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 78 selfloop transitions, 36 changer transitions 11/127 dead transitions. [2024-06-03 19:40:44,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 127 transitions, 1238 flow [2024-06-03 19:40:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 19:40:44,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:40:44,970 INFO L175 Difference]: Start difference. First operand has 167 places, 109 transitions, 922 flow. Second operand 12 states and 136 transitions. [2024-06-03 19:40:44,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 127 transitions, 1238 flow [2024-06-03 19:40:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 127 transitions, 1184 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:45,020 INFO L231 Difference]: Finished difference. Result has 164 places, 106 transitions, 926 flow [2024-06-03 19:40:45,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=926, PETRI_PLACES=164, PETRI_TRANSITIONS=106} [2024-06-03 19:40:45,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-03 19:40:45,021 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 106 transitions, 926 flow [2024-06-03 19:40:45,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:45,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:45,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:45,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-03 19:40:45,022 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)] === [2024-06-03 19:40:45,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:45,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1000487299, now seen corresponding path program 45 times [2024-06-03 19:40:45,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:45,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551826534] [2024-06-03 19:40:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:45,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:46,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551826534] [2024-06-03 19:40:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551826534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234231335] [2024-06-03 19:40:46,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:46,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:46,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:46,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 106 transitions, 926 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:46,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:46,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:46,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:46,466 INFO L124 PetriNetUnfolderBase]: 273/548 cut-off events. [2024-06-03 19:40:46,467 INFO L125 PetriNetUnfolderBase]: For 36224/36224 co-relation queries the response was YES. [2024-06-03 19:40:46,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3278 conditions, 548 events. 273/548 cut-off events. For 36224/36224 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2501 event pairs, 54 based on Foata normal form. 10/556 useless extension candidates. Maximal degree in co-relation 3212. Up to 429 conditions per place. [2024-06-03 19:40:46,470 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 24 changer transitions 11/125 dead transitions. [2024-06-03 19:40:46,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 125 transitions, 1250 flow [2024-06-03 19:40:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 19:40:46,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 19:40:46,471 INFO L175 Difference]: Start difference. First operand has 164 places, 106 transitions, 926 flow. Second operand 12 states and 134 transitions. [2024-06-03 19:40:46,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 125 transitions, 1250 flow [2024-06-03 19:40:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 125 transitions, 1172 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:46,513 INFO L231 Difference]: Finished difference. Result has 160 places, 103 transitions, 874 flow [2024-06-03 19:40:46,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=874, PETRI_PLACES=160, PETRI_TRANSITIONS=103} [2024-06-03 19:40:46,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-03 19:40:46,514 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 103 transitions, 874 flow [2024-06-03 19:40:46,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:46,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:46,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:46,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-03 19:40:46,514 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)] === [2024-06-03 19:40:46,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1000481719, now seen corresponding path program 46 times [2024-06-03 19:40:46,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:46,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91498397] [2024-06-03 19:40:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:46,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:47,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91498397] [2024-06-03 19:40:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91498397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:47,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:47,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:47,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837814499] [2024-06-03 19:40:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:47,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:47,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:47,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:47,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 103 transitions, 874 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:47,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:47,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:47,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:47,973 INFO L124 PetriNetUnfolderBase]: 261/528 cut-off events. [2024-06-03 19:40:47,973 INFO L125 PetriNetUnfolderBase]: For 31091/31091 co-relation queries the response was YES. [2024-06-03 19:40:47,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 528 events. 261/528 cut-off events. For 31091/31091 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2388 event pairs, 50 based on Foata normal form. 8/534 useless extension candidates. Maximal degree in co-relation 3046. Up to 419 conditions per place. [2024-06-03 19:40:47,976 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 85 selfloop transitions, 21 changer transitions 13/121 dead transitions. [2024-06-03 19:40:47,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 121 transitions, 1176 flow [2024-06-03 19:40:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-03 19:40:47,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-03 19:40:47,977 INFO L175 Difference]: Start difference. First operand has 160 places, 103 transitions, 874 flow. Second operand 12 states and 131 transitions. [2024-06-03 19:40:47,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 121 transitions, 1176 flow [2024-06-03 19:40:48,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 121 transitions, 1118 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:48,017 INFO L231 Difference]: Finished difference. Result has 158 places, 99 transitions, 824 flow [2024-06-03 19:40:48,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=158, PETRI_TRANSITIONS=99} [2024-06-03 19:40:48,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-03 19:40:48,017 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 99 transitions, 824 flow [2024-06-03 19:40:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:48,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:48,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:48,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-03 19:40:48,020 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)] === [2024-06-03 19:40:48,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1637339419, now seen corresponding path program 47 times [2024-06-03 19:40:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187982033] [2024-06-03 19:40:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:49,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187982033] [2024-06-03 19:40:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187982033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:49,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916174173] [2024-06-03 19:40:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:49,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:49,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:49,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 99 transitions, 824 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:49,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:49,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:49,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:49,579 INFO L124 PetriNetUnfolderBase]: 290/591 cut-off events. [2024-06-03 19:40:49,579 INFO L125 PetriNetUnfolderBase]: For 44100/44100 co-relation queries the response was YES. [2024-06-03 19:40:49,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 591 events. 290/591 cut-off events. For 44100/44100 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2750 event pairs, 75 based on Foata normal form. 8/597 useless extension candidates. Maximal degree in co-relation 3804. Up to 273 conditions per place. [2024-06-03 19:40:49,583 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 71 selfloop transitions, 41 changer transitions 10/124 dead transitions. [2024-06-03 19:40:49,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 124 transitions, 1266 flow [2024-06-03 19:40:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-03 19:40:49,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-03 19:40:49,584 INFO L175 Difference]: Start difference. First operand has 158 places, 99 transitions, 824 flow. Second operand 12 states and 143 transitions. [2024-06-03 19:40:49,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 124 transitions, 1266 flow [2024-06-03 19:40:49,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 124 transitions, 1214 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:40:49,638 INFO L231 Difference]: Finished difference. Result has 153 places, 96 transitions, 841 flow [2024-06-03 19:40:49,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=841, PETRI_PLACES=153, PETRI_TRANSITIONS=96} [2024-06-03 19:40:49,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-03 19:40:49,639 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 96 transitions, 841 flow [2024-06-03 19:40:49,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:49,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:49,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-03 19:40:49,640 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)] === [2024-06-03 19:40:49,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1637195269, now seen corresponding path program 48 times [2024-06-03 19:40:49,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981159835] [2024-06-03 19:40:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:50,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:50,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981159835] [2024-06-03 19:40:50,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981159835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:50,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:50,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870874708] [2024-06-03 19:40:50,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:50,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:50,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:50,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:50,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:50,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 96 transitions, 841 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:50,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:50,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:50,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:51,034 INFO L124 PetriNetUnfolderBase]: 280/573 cut-off events. [2024-06-03 19:40:51,034 INFO L125 PetriNetUnfolderBase]: For 42363/42363 co-relation queries the response was YES. [2024-06-03 19:40:51,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 573 events. 280/573 cut-off events. For 42363/42363 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2655 event pairs, 71 based on Foata normal form. 8/579 useless extension candidates. Maximal degree in co-relation 3758. Up to 410 conditions per place. [2024-06-03 19:40:51,037 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 62 selfloop transitions, 38 changer transitions 13/115 dead transitions. [2024-06-03 19:40:51,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 115 transitions, 1133 flow [2024-06-03 19:40:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 19:40:51,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:40:51,038 INFO L175 Difference]: Start difference. First operand has 153 places, 96 transitions, 841 flow. Second operand 12 states and 136 transitions. [2024-06-03 19:40:51,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 115 transitions, 1133 flow [2024-06-03 19:40:51,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 115 transitions, 1055 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:51,087 INFO L231 Difference]: Finished difference. Result has 150 places, 91 transitions, 797 flow [2024-06-03 19:40:51,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=797, PETRI_PLACES=150, PETRI_TRANSITIONS=91} [2024-06-03 19:40:51,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-03 19:40:51,088 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 91 transitions, 797 flow [2024-06-03 19:40:51,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:51,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:51,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:51,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-03 19:40:51,089 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)] === [2024-06-03 19:40:51,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1555483977, now seen corresponding path program 49 times [2024-06-03 19:40:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501422933] [2024-06-03 19:40:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501422933] [2024-06-03 19:40:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501422933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:52,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:52,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698945538] [2024-06-03 19:40:52,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:52,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:52,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:52,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:52,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:52,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:52,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 91 transitions, 797 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:52,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:52,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:52,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:52,445 INFO L124 PetriNetUnfolderBase]: 249/508 cut-off events. [2024-06-03 19:40:52,445 INFO L125 PetriNetUnfolderBase]: For 31448/31448 co-relation queries the response was YES. [2024-06-03 19:40:52,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 508 events. 249/508 cut-off events. For 31448/31448 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2257 event pairs, 53 based on Foata normal form. 8/514 useless extension candidates. Maximal degree in co-relation 3130. Up to 350 conditions per place. [2024-06-03 19:40:52,449 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 62 selfloop transitions, 29 changer transitions 17/110 dead transitions. [2024-06-03 19:40:52,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 110 transitions, 1077 flow [2024-06-03 19:40:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 19:40:52,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:40:52,450 INFO L175 Difference]: Start difference. First operand has 150 places, 91 transitions, 797 flow. Second operand 12 states and 135 transitions. [2024-06-03 19:40:52,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 110 transitions, 1077 flow [2024-06-03 19:40:52,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 110 transitions, 985 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-03 19:40:52,483 INFO L231 Difference]: Finished difference. Result has 142 places, 85 transitions, 723 flow [2024-06-03 19:40:52,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=142, PETRI_TRANSITIONS=85} [2024-06-03 19:40:52,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-03 19:40:52,483 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 85 transitions, 723 flow [2024-06-03 19:40:52,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:52,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:52,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-03 19:40:52,484 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)] === [2024-06-03 19:40:52,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 253585395, now seen corresponding path program 6 times [2024-06-03 19:40:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694577138] [2024-06-03 19:40:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:53,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694577138] [2024-06-03 19:40:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694577138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:53,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618127776] [2024-06-03 19:40:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:53,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:53,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:53,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 85 transitions, 723 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:53,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:53,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:53,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:53,780 INFO L124 PetriNetUnfolderBase]: 234/471 cut-off events. [2024-06-03 19:40:53,781 INFO L125 PetriNetUnfolderBase]: For 21868/21868 co-relation queries the response was YES. [2024-06-03 19:40:53,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 471 events. 234/471 cut-off events. For 21868/21868 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2013 event pairs, 57 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 2890. Up to 420 conditions per place. [2024-06-03 19:40:53,783 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-03 19:40:53,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 101 transitions, 997 flow [2024-06-03 19:40:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:40:53,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 19:40:53,784 INFO L175 Difference]: Start difference. First operand has 142 places, 85 transitions, 723 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:40:53,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 101 transitions, 997 flow [2024-06-03 19:40:53,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 101 transitions, 923 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 19:40:53,805 INFO L231 Difference]: Finished difference. Result has 131 places, 88 transitions, 741 flow [2024-06-03 19:40:53,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=131, PETRI_TRANSITIONS=88} [2024-06-03 19:40:53,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-03 19:40:53,806 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 88 transitions, 741 flow [2024-06-03 19:40:53,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:53,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:53,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-03 19:40:53,806 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)] === [2024-06-03 19:40:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash 245960759, now seen corresponding path program 50 times [2024-06-03 19:40:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:53,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193256654] [2024-06-03 19:40:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:54,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:54,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193256654] [2024-06-03 19:40:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193256654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:54,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733874637] [2024-06-03 19:40:54,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:54,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:54,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:54,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:54,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:54,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 88 transitions, 741 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:54,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:54,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:54,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:55,199 INFO L124 PetriNetUnfolderBase]: 246/499 cut-off events. [2024-06-03 19:40:55,199 INFO L125 PetriNetUnfolderBase]: For 20086/20086 co-relation queries the response was YES. [2024-06-03 19:40:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 499 events. 246/499 cut-off events. For 20086/20086 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2175 event pairs, 49 based on Foata normal form. 8/505 useless extension candidates. Maximal degree in co-relation 2840. Up to 231 conditions per place. [2024-06-03 19:40:55,201 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 65 selfloop transitions, 37 changer transitions 7/111 dead transitions. [2024-06-03 19:40:55,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 111 transitions, 1107 flow [2024-06-03 19:40:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:40:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:40:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 19:40:55,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 19:40:55,202 INFO L175 Difference]: Start difference. First operand has 131 places, 88 transitions, 741 flow. Second operand 12 states and 139 transitions. [2024-06-03 19:40:55,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 111 transitions, 1107 flow [2024-06-03 19:40:55,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 111 transitions, 1047 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 19:40:55,220 INFO L231 Difference]: Finished difference. Result has 135 places, 86 transitions, 740 flow [2024-06-03 19:40:55,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=740, PETRI_PLACES=135, PETRI_TRANSITIONS=86} [2024-06-03 19:40:55,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:40:55,221 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 86 transitions, 740 flow [2024-06-03 19:40:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:55,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:55,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:55,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-03 19:40:55,221 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)] === [2024-06-03 19:40:55,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash -258278187, now seen corresponding path program 7 times [2024-06-03 19:40:55,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:55,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845465058] [2024-06-03 19:40:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:56,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845465058] [2024-06-03 19:40:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845465058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:56,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:56,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:56,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853951731] [2024-06-03 19:40:56,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:56,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:56,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 86 transitions, 740 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:56,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:56,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:56,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:56,754 INFO L124 PetriNetUnfolderBase]: 232/469 cut-off events. [2024-06-03 19:40:56,754 INFO L125 PetriNetUnfolderBase]: For 17699/17699 co-relation queries the response was YES. [2024-06-03 19:40:56,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 469 events. 232/469 cut-off events. For 17699/17699 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2004 event pairs, 59 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2780. Up to 422 conditions per place. [2024-06-03 19:40:56,757 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-03 19:40:56,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 100 transitions, 980 flow [2024-06-03 19:40:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 19:40:56,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-03 19:40:56,758 INFO L175 Difference]: Start difference. First operand has 135 places, 86 transitions, 740 flow. Second operand 11 states and 115 transitions. [2024-06-03 19:40:56,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 100 transitions, 980 flow [2024-06-03 19:40:56,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 100 transitions, 910 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:40:56,777 INFO L231 Difference]: Finished difference. Result has 133 places, 87 transitions, 726 flow [2024-06-03 19:40:56,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=726, PETRI_PLACES=133, PETRI_TRANSITIONS=87} [2024-06-03 19:40:56,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-03 19:40:56,778 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 87 transitions, 726 flow [2024-06-03 19:40:56,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:56,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:56,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:56,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-03 19:40:56,778 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)] === [2024-06-03 19:40:56,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash 511873365, now seen corresponding path program 8 times [2024-06-03 19:40:56,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:56,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046424011] [2024-06-03 19:40:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:56,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:57,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046424011] [2024-06-03 19:40:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046424011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:57,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:57,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119568804] [2024-06-03 19:40:57,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:57,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:57,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:57,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:57,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 87 transitions, 726 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:57,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:57,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:57,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:58,288 INFO L124 PetriNetUnfolderBase]: 236/477 cut-off events. [2024-06-03 19:40:58,289 INFO L125 PetriNetUnfolderBase]: For 16815/16815 co-relation queries the response was YES. [2024-06-03 19:40:58,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 477 events. 236/477 cut-off events. For 16815/16815 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2069 event pairs, 61 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2784. Up to 424 conditions per place. [2024-06-03 19:40:58,291 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-06-03 19:40:58,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 101 transitions, 974 flow [2024-06-03 19:40:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 19:40:58,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-03 19:40:58,292 INFO L175 Difference]: Start difference. First operand has 133 places, 87 transitions, 726 flow. Second operand 11 states and 118 transitions. [2024-06-03 19:40:58,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 101 transitions, 974 flow [2024-06-03 19:40:58,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 101 transitions, 928 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 19:40:58,311 INFO L231 Difference]: Finished difference. Result has 135 places, 88 transitions, 751 flow [2024-06-03 19:40:58,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=751, PETRI_PLACES=135, PETRI_TRANSITIONS=88} [2024-06-03 19:40:58,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:40:58,311 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 88 transitions, 751 flow [2024-06-03 19:40:58,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:58,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:58,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-03 19:40:58,312 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)] === [2024-06-03 19:40:58,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash -258595317, now seen corresponding path program 9 times [2024-06-03 19:40:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:58,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074894857] [2024-06-03 19:40:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074894857] [2024-06-03 19:40:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074894857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:40:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291071627] [2024-06-03 19:40:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:59,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:40:59,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:40:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:40:59,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:40:59,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 88 transitions, 751 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:59,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:59,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:40:59,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:59,726 INFO L124 PetriNetUnfolderBase]: 240/485 cut-off events. [2024-06-03 19:40:59,726 INFO L125 PetriNetUnfolderBase]: For 17866/17866 co-relation queries the response was YES. [2024-06-03 19:40:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 485 events. 240/485 cut-off events. For 17866/17866 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2123 event pairs, 63 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2860. Up to 416 conditions per place. [2024-06-03 19:40:59,729 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 23 changer transitions 0/102 dead transitions. [2024-06-03 19:40:59,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 102 transitions, 1001 flow [2024-06-03 19:40:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:40:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:40:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:40:59,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 19:40:59,730 INFO L175 Difference]: Start difference. First operand has 135 places, 88 transitions, 751 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:40:59,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 102 transitions, 1001 flow [2024-06-03 19:40:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 102 transitions, 942 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 19:40:59,751 INFO L231 Difference]: Finished difference. Result has 137 places, 89 transitions, 764 flow [2024-06-03 19:40:59,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=137, PETRI_TRANSITIONS=89} [2024-06-03 19:40:59,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-03 19:40:59,751 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 89 transitions, 764 flow [2024-06-03 19:40:59,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:59,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:59,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:59,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-03 19:40:59,752 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)] === [2024-06-03 19:40:59,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash 253594695, now seen corresponding path program 10 times [2024-06-03 19:40:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490217852] [2024-06-03 19:40:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:00,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:00,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490217852] [2024-06-03 19:41:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490217852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:00,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552161833] [2024-06-03 19:41:00,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:00,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:00,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:00,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 89 transitions, 764 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:00,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:00,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:00,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:01,081 INFO L124 PetriNetUnfolderBase]: 244/493 cut-off events. [2024-06-03 19:41:01,081 INFO L125 PetriNetUnfolderBase]: For 19023/19023 co-relation queries the response was YES. [2024-06-03 19:41:01,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 493 events. 244/493 cut-off events. For 19023/19023 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2171 event pairs, 63 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 2926. Up to 419 conditions per place. [2024-06-03 19:41:01,084 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 23 changer transitions 0/104 dead transitions. [2024-06-03 19:41:01,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 104 transitions, 1094 flow [2024-06-03 19:41:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:41:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:41:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 19:41:01,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 19:41:01,085 INFO L175 Difference]: Start difference. First operand has 137 places, 89 transitions, 764 flow. Second operand 11 states and 120 transitions. [2024-06-03 19:41:01,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 104 transitions, 1094 flow [2024-06-03 19:41:01,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 104 transitions, 1032 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:41:01,105 INFO L231 Difference]: Finished difference. Result has 139 places, 90 transitions, 774 flow [2024-06-03 19:41:01,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=774, PETRI_PLACES=139, PETRI_TRANSITIONS=90} [2024-06-03 19:41:01,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-03 19:41:01,105 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 90 transitions, 774 flow [2024-06-03 19:41:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:01,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:01,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:01,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-03 19:41:01,106 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)] === [2024-06-03 19:41:01,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash -267809323, now seen corresponding path program 51 times [2024-06-03 19:41:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653549957] [2024-06-03 19:41:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:02,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653549957] [2024-06-03 19:41:02,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653549957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:02,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:02,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:02,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630137144] [2024-06-03 19:41:02,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:02,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:02,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:02,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 90 transitions, 774 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:02,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:02,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:02,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:02,637 INFO L124 PetriNetUnfolderBase]: 250/511 cut-off events. [2024-06-03 19:41:02,637 INFO L125 PetriNetUnfolderBase]: For 25272/25272 co-relation queries the response was YES. [2024-06-03 19:41:02,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 511 events. 250/511 cut-off events. For 25272/25272 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2309 event pairs, 59 based on Foata normal form. 18/527 useless extension candidates. Maximal degree in co-relation 2696. Up to 381 conditions per place. [2024-06-03 19:41:02,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 73 selfloop transitions, 20 changer transitions 14/109 dead transitions. [2024-06-03 19:41:02,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 109 transitions, 1058 flow [2024-06-03 19:41:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-03 19:41:02,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-03 19:41:02,640 INFO L175 Difference]: Start difference. First operand has 139 places, 90 transitions, 774 flow. Second operand 12 states and 131 transitions. [2024-06-03 19:41:02,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 109 transitions, 1058 flow [2024-06-03 19:41:02,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 109 transitions, 983 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 19:41:02,662 INFO L231 Difference]: Finished difference. Result has 142 places, 84 transitions, 681 flow [2024-06-03 19:41:02,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=681, PETRI_PLACES=142, PETRI_TRANSITIONS=84} [2024-06-03 19:41:02,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-03 19:41:02,663 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 84 transitions, 681 flow [2024-06-03 19:41:02,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:02,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:02,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:02,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-03 19:41:02,663 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)] === [2024-06-03 19:41:02,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash 246176085, now seen corresponding path program 11 times [2024-06-03 19:41:02,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:02,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112657048] [2024-06-03 19:41:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112657048] [2024-06-03 19:41:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112657048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198791968] [2024-06-03 19:41:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:03,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:03,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 84 transitions, 681 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:03,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:03,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:03,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:04,110 INFO L124 PetriNetUnfolderBase]: 204/421 cut-off events. [2024-06-03 19:41:04,111 INFO L125 PetriNetUnfolderBase]: For 13461/13461 co-relation queries the response was YES. [2024-06-03 19:41:04,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 421 events. 204/421 cut-off events. For 13461/13461 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1787 event pairs, 48 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 2171. Up to 370 conditions per place. [2024-06-03 19:41:04,113 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-03 19:41:04,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 98 transitions, 909 flow [2024-06-03 19:41:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:41:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:41:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 19:41:04,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 19:41:04,114 INFO L175 Difference]: Start difference. First operand has 142 places, 84 transitions, 681 flow. Second operand 11 states and 120 transitions. [2024-06-03 19:41:04,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 98 transitions, 909 flow [2024-06-03 19:41:04,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 98 transitions, 812 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-06-03 19:41:04,134 INFO L231 Difference]: Finished difference. Result has 135 places, 84 transitions, 630 flow [2024-06-03 19:41:04,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=135, PETRI_TRANSITIONS=84} [2024-06-03 19:41:04,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:41:04,134 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 84 transitions, 630 flow [2024-06-03 19:41:04,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:04,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:04,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:04,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-03 19:41:04,135 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)] === [2024-06-03 19:41:04,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 253317989, now seen corresponding path program 52 times [2024-06-03 19:41:04,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:04,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772484655] [2024-06-03 19:41:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772484655] [2024-06-03 19:41:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772484655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:05,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:05,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:05,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119070783] [2024-06-03 19:41:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:05,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:05,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:05,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 84 transitions, 630 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:05,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:05,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:05,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:05,600 INFO L124 PetriNetUnfolderBase]: 234/487 cut-off events. [2024-06-03 19:41:05,601 INFO L125 PetriNetUnfolderBase]: For 21945/21945 co-relation queries the response was YES. [2024-06-03 19:41:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 487 events. 234/487 cut-off events. For 21945/21945 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2193 event pairs, 58 based on Foata normal form. 16/501 useless extension candidates. Maximal degree in co-relation 2267. Up to 362 conditions per place. [2024-06-03 19:41:05,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 70 selfloop transitions, 17 changer transitions 16/105 dead transitions. [2024-06-03 19:41:05,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 105 transitions, 918 flow [2024-06-03 19:41:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 19:41:05,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-03 19:41:05,604 INFO L175 Difference]: Start difference. First operand has 135 places, 84 transitions, 630 flow. Second operand 12 states and 133 transitions. [2024-06-03 19:41:05,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 105 transitions, 918 flow [2024-06-03 19:41:05,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 105 transitions, 836 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 19:41:05,620 INFO L231 Difference]: Finished difference. Result has 136 places, 80 transitions, 559 flow [2024-06-03 19:41:05,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=136, PETRI_TRANSITIONS=80} [2024-06-03 19:41:05,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-03 19:41:05,621 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 80 transitions, 559 flow [2024-06-03 19:41:05,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:05,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:05,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:05,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-03 19:41:05,621 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)] === [2024-06-03 19:41:05,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash 245966339, now seen corresponding path program 53 times [2024-06-03 19:41:05,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:05,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734848541] [2024-06-03 19:41:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734848541] [2024-06-03 19:41:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734848541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:06,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:06,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184036205] [2024-06-03 19:41:06,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:06,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:06,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:06,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:06,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 80 transitions, 559 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:06,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:06,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:06,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:07,002 INFO L124 PetriNetUnfolderBase]: 206/435 cut-off events. [2024-06-03 19:41:07,002 INFO L125 PetriNetUnfolderBase]: For 18763/18763 co-relation queries the response was YES. [2024-06-03 19:41:07,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 435 events. 206/435 cut-off events. For 18763/18763 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1920 event pairs, 48 based on Foata normal form. 10/443 useless extension candidates. Maximal degree in co-relation 2029. Up to 313 conditions per place. [2024-06-03 19:41:07,004 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 61 selfloop transitions, 25 changer transitions 12/100 dead transitions. [2024-06-03 19:41:07,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 100 transitions, 823 flow [2024-06-03 19:41:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 19:41:07,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:41:07,005 INFO L175 Difference]: Start difference. First operand has 136 places, 80 transitions, 559 flow. Second operand 12 states and 136 transitions. [2024-06-03 19:41:07,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 100 transitions, 823 flow [2024-06-03 19:41:07,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 100 transitions, 781 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:41:07,023 INFO L231 Difference]: Finished difference. Result has 132 places, 76 transitions, 537 flow [2024-06-03 19:41:07,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=132, PETRI_TRANSITIONS=76} [2024-06-03 19:41:07,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-03 19:41:07,023 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 76 transitions, 537 flow [2024-06-03 19:41:07,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:07,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:07,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:07,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-03 19:41:07,024 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)] === [2024-06-03 19:41:07,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 246168149, now seen corresponding path program 54 times [2024-06-03 19:41:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:07,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519580286] [2024-06-03 19:41:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519580286] [2024-06-03 19:41:07,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519580286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:07,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911070150] [2024-06-03 19:41:07,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:07,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:07,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:08,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:08,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 76 transitions, 537 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:08,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:08,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:08,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:08,407 INFO L124 PetriNetUnfolderBase]: 168/361 cut-off events. [2024-06-03 19:41:08,408 INFO L125 PetriNetUnfolderBase]: For 11050/11050 co-relation queries the response was YES. [2024-06-03 19:41:08,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 361 events. 168/361 cut-off events. For 11050/11050 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1503 event pairs, 33 based on Foata normal form. 10/369 useless extension candidates. Maximal degree in co-relation 1407. Up to 274 conditions per place. [2024-06-03 19:41:08,409 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 66 selfloop transitions, 15 changer transitions 11/94 dead transitions. [2024-06-03 19:41:08,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 94 transitions, 771 flow [2024-06-03 19:41:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 19:41:08,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-03 19:41:08,410 INFO L175 Difference]: Start difference. First operand has 132 places, 76 transitions, 537 flow. Second operand 12 states and 130 transitions. [2024-06-03 19:41:08,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 94 transitions, 771 flow [2024-06-03 19:41:08,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 94 transitions, 706 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:41:08,420 INFO L231 Difference]: Finished difference. Result has 128 places, 72 transitions, 466 flow [2024-06-03 19:41:08,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=128, PETRI_TRANSITIONS=72} [2024-06-03 19:41:08,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-03 19:41:08,420 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 72 transitions, 466 flow [2024-06-03 19:41:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:08,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:08,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:08,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-03 19:41:08,421 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)] === [2024-06-03 19:41:08,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -30576826, now seen corresponding path program 1 times [2024-06-03 19:41:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045879354] [2024-06-03 19:41:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045879354] [2024-06-03 19:41:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045879354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:09,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:09,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:09,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640118864] [2024-06-03 19:41:09,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:09,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:09,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:09,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 72 transitions, 466 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:09,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:10,002 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-03 19:41:10,003 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-06-03 19:41:10,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 331 events. 150/331 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1347 event pairs, 28 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1218. Up to 192 conditions per place. [2024-06-03 19:41:10,004 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 12 changer transitions 26/91 dead transitions. [2024-06-03 19:41:10,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 91 transitions, 692 flow [2024-06-03 19:41:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:41:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:41:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-03 19:41:10,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-03 19:41:10,006 INFO L175 Difference]: Start difference. First operand has 128 places, 72 transitions, 466 flow. Second operand 13 states and 134 transitions. [2024-06-03 19:41:10,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 91 transitions, 692 flow [2024-06-03 19:41:10,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 91 transitions, 635 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:41:10,015 INFO L231 Difference]: Finished difference. Result has 123 places, 61 transitions, 387 flow [2024-06-03 19:41:10,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=387, PETRI_PLACES=123, PETRI_TRANSITIONS=61} [2024-06-03 19:41:10,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-03 19:41:10,016 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 61 transitions, 387 flow [2024-06-03 19:41:10,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:10,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:10,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:10,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-03 19:41:10,017 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)] === [2024-06-03 19:41:10,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1600527806, now seen corresponding path program 2 times [2024-06-03 19:41:10,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:10,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29660563] [2024-06-03 19:41:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:11,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:11,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29660563] [2024-06-03 19:41:11,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29660563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:11,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:11,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394938712] [2024-06-03 19:41:11,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:11,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:11,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:11,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:11,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 61 transitions, 387 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:11,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:11,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:11,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:11,860 INFO L124 PetriNetUnfolderBase]: 130/284 cut-off events. [2024-06-03 19:41:11,860 INFO L125 PetriNetUnfolderBase]: For 7906/7906 co-relation queries the response was YES. [2024-06-03 19:41:11,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 284 events. 130/284 cut-off events. For 7906/7906 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1108 event pairs, 25 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 1032. Up to 183 conditions per place. [2024-06-03 19:41:11,862 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 14 changer transitions 10/77 dead transitions. [2024-06-03 19:41:11,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 77 transitions, 575 flow [2024-06-03 19:41:11,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-03 19:41:11,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-03 19:41:11,863 INFO L175 Difference]: Start difference. First operand has 123 places, 61 transitions, 387 flow. Second operand 12 states and 125 transitions. [2024-06-03 19:41:11,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 77 transitions, 575 flow [2024-06-03 19:41:11,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 77 transitions, 533 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-03 19:41:11,869 INFO L231 Difference]: Finished difference. Result has 105 places, 57 transitions, 357 flow [2024-06-03 19:41:11,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=357, PETRI_PLACES=105, PETRI_TRANSITIONS=57} [2024-06-03 19:41:11,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-03 19:41:11,870 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 57 transitions, 357 flow [2024-06-03 19:41:11,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:11,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-03 19:41:11,870 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)] === [2024-06-03 19:41:11,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1986019142, now seen corresponding path program 3 times [2024-06-03 19:41:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115358751] [2024-06-03 19:41:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115358751] [2024-06-03 19:41:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115358751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:13,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097829432] [2024-06-03 19:41:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:13,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:13,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:13,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 57 transitions, 357 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:13,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:13,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:13,580 INFO L124 PetriNetUnfolderBase]: 118/260 cut-off events. [2024-06-03 19:41:13,580 INFO L125 PetriNetUnfolderBase]: For 5520/5520 co-relation queries the response was YES. [2024-06-03 19:41:13,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 260 events. 118/260 cut-off events. For 5520/5520 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 970 event pairs, 23 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 934. Up to 156 conditions per place. [2024-06-03 19:41:13,581 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 10 changer transitions 19/74 dead transitions. [2024-06-03 19:41:13,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 74 transitions, 541 flow [2024-06-03 19:41:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:41:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:41:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-03 19:41:13,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31009615384615385 [2024-06-03 19:41:13,582 INFO L175 Difference]: Start difference. First operand has 105 places, 57 transitions, 357 flow. Second operand 13 states and 129 transitions. [2024-06-03 19:41:13,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 74 transitions, 541 flow [2024-06-03 19:41:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 74 transitions, 507 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:41:13,587 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 310 flow [2024-06-03 19:41:13,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=310, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2024-06-03 19:41:13,588 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-03 19:41:13,588 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 310 flow [2024-06-03 19:41:13,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:13,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:13,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-03 19:41:13,588 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)] === [2024-06-03 19:41:13,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash -148390108, now seen corresponding path program 4 times [2024-06-03 19:41:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850432632] [2024-06-03 19:41:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850432632] [2024-06-03 19:41:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850432632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:15,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:15,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130650896] [2024-06-03 19:41:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:15,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:15,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:15,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 310 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:15,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:15,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:15,475 INFO L124 PetriNetUnfolderBase]: 103/227 cut-off events. [2024-06-03 19:41:15,476 INFO L125 PetriNetUnfolderBase]: For 4810/4810 co-relation queries the response was YES. [2024-06-03 19:41:15,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 227 events. 103/227 cut-off events. For 4810/4810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 791 event pairs, 19 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 818. Up to 157 conditions per place. [2024-06-03 19:41:15,477 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 10 changer transitions 14/65 dead transitions. [2024-06-03 19:41:15,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 65 transitions, 468 flow [2024-06-03 19:41:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:15,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 19:41:15,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-03 19:41:15,478 INFO L175 Difference]: Start difference. First operand has 101 places, 50 transitions, 310 flow. Second operand 12 states and 118 transitions. [2024-06-03 19:41:15,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 65 transitions, 468 flow [2024-06-03 19:41:15,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 65 transitions, 436 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 19:41:15,481 INFO L231 Difference]: Finished difference. Result has 89 places, 46 transitions, 282 flow [2024-06-03 19:41:15,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=282, PETRI_PLACES=89, PETRI_TRANSITIONS=46} [2024-06-03 19:41:15,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-03 19:41:15,482 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 46 transitions, 282 flow [2024-06-03 19:41:15,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:15,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:15,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:15,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-03 19:41:15,483 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)] === [2024-06-03 19:41:15,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:15,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1620974874, now seen corresponding path program 5 times [2024-06-03 19:41:15,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:15,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303452567] [2024-06-03 19:41:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:15,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303452567] [2024-06-03 19:41:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303452567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:16,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:16,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008801155] [2024-06-03 19:41:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:16,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:16,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 46 transitions, 282 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:16,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:16,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:17,060 INFO L124 PetriNetUnfolderBase]: 89/201 cut-off events. [2024-06-03 19:41:17,060 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2024-06-03 19:41:17,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 201 events. 89/201 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 655 event pairs, 19 based on Foata normal form. 6/206 useless extension candidates. Maximal degree in co-relation 720. Up to 120 conditions per place. [2024-06-03 19:41:17,061 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 8 changer transitions 16/61 dead transitions. [2024-06-03 19:41:17,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 61 transitions, 436 flow [2024-06-03 19:41:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 19:41:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-03 19:41:17,062 INFO L175 Difference]: Start difference. First operand has 89 places, 46 transitions, 282 flow. Second operand 12 states and 118 transitions. [2024-06-03 19:41:17,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 61 transitions, 436 flow [2024-06-03 19:41:17,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 61 transitions, 408 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:41:17,066 INFO L231 Difference]: Finished difference. Result has 83 places, 40 transitions, 237 flow [2024-06-03 19:41:17,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=83, PETRI_TRANSITIONS=40} [2024-06-03 19:41:17,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-03 19:41:17,066 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 40 transitions, 237 flow [2024-06-03 19:41:17,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:17,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:17,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-03 19:41:17,067 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)] === [2024-06-03 19:41:17,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1633762106, now seen corresponding path program 6 times [2024-06-03 19:41:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:17,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083057673] [2024-06-03 19:41:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:17,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083057673] [2024-06-03 19:41:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083057673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:18,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491889281] [2024-06-03 19:41:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:18,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:18,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:18,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 40 transitions, 237 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:18,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:18,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:18,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:19,086 INFO L124 PetriNetUnfolderBase]: 78/176 cut-off events. [2024-06-03 19:41:19,086 INFO L125 PetriNetUnfolderBase]: For 2478/2478 co-relation queries the response was YES. [2024-06-03 19:41:19,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 176 events. 78/176 cut-off events. For 2478/2478 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 545 event pairs, 17 based on Foata normal form. 6/181 useless extension candidates. Maximal degree in co-relation 620. Up to 100 conditions per place. [2024-06-03 19:41:19,087 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 28 selfloop transitions, 12 changer transitions 13/55 dead transitions. [2024-06-03 19:41:19,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 55 transitions, 379 flow [2024-06-03 19:41:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:41:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:41:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-06-03 19:41:19,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932692307692308 [2024-06-03 19:41:19,088 INFO L175 Difference]: Start difference. First operand has 83 places, 40 transitions, 237 flow. Second operand 13 states and 122 transitions. [2024-06-03 19:41:19,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 55 transitions, 379 flow [2024-06-03 19:41:19,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 55 transitions, 353 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:41:19,091 INFO L231 Difference]: Finished difference. Result has 75 places, 35 transitions, 204 flow [2024-06-03 19:41:19,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=204, PETRI_PLACES=75, PETRI_TRANSITIONS=35} [2024-06-03 19:41:19,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-03 19:41:19,091 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 35 transitions, 204 flow [2024-06-03 19:41:19,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:19,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:19,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:19,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-03 19:41:19,092 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)] === [2024-06-03 19:41:19,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1159113748, now seen corresponding path program 7 times [2024-06-03 19:41:19,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:19,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497080836] [2024-06-03 19:41:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:19,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497080836] [2024-06-03 19:41:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497080836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:20,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248724510] [2024-06-03 19:41:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:20,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:20,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:20,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 35 transitions, 204 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:20,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:20,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:20,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:20,569 INFO L124 PetriNetUnfolderBase]: 65/153 cut-off events. [2024-06-03 19:41:20,570 INFO L125 PetriNetUnfolderBase]: For 1588/1588 co-relation queries the response was YES. [2024-06-03 19:41:20,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 153 events. 65/153 cut-off events. For 1588/1588 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 6 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 523. Up to 73 conditions per place. [2024-06-03 19:41:20,570 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 10 changer transitions 10/50 dead transitions. [2024-06-03 19:41:20,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 50 transitions, 334 flow [2024-06-03 19:41:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-03 19:41:20,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-03 19:41:20,571 INFO L175 Difference]: Start difference. First operand has 75 places, 35 transitions, 204 flow. Second operand 12 states and 116 transitions. [2024-06-03 19:41:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 50 transitions, 334 flow [2024-06-03 19:41:20,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 50 transitions, 300 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-03 19:41:20,573 INFO L231 Difference]: Finished difference. Result has 68 places, 31 transitions, 174 flow [2024-06-03 19:41:20,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=68, PETRI_TRANSITIONS=31} [2024-06-03 19:41:20,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-03 19:41:20,574 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 31 transitions, 174 flow [2024-06-03 19:41:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:20,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:20,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-03 19:41:20,574 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)] === [2024-06-03 19:41:20,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1139466946, now seen corresponding path program 8 times [2024-06-03 19:41:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429510065] [2024-06-03 19:41:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429510065] [2024-06-03 19:41:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429510065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:41:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26051868] [2024-06-03 19:41:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:41:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:41:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:41:22,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:22,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 31 transitions, 174 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:22,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:22,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:22,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:22,391 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-03 19:41:22,391 INFO L125 PetriNetUnfolderBase]: For 1212/1212 co-relation queries the response was YES. [2024-06-03 19:41:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 129 events. 53/129 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 15 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 440. Up to 60 conditions per place. [2024-06-03 19:41:22,391 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 21 selfloop transitions, 8 changer transitions 14/45 dead transitions. [2024-06-03 19:41:22,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 45 transitions, 292 flow [2024-06-03 19:41:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-03 19:41:22,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-03 19:41:22,392 INFO L175 Difference]: Start difference. First operand has 68 places, 31 transitions, 174 flow. Second operand 12 states and 115 transitions. [2024-06-03 19:41:22,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 45 transitions, 292 flow [2024-06-03 19:41:22,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 45 transitions, 266 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:41:22,394 INFO L231 Difference]: Finished difference. Result has 63 places, 26 transitions, 139 flow [2024-06-03 19:41:22,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=26} [2024-06-03 19:41:22,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-03 19:41:22,394 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 26 transitions, 139 flow [2024-06-03 19:41:22,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:22,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:22,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:22,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-03 19:41:22,395 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)] === [2024-06-03 19:41:22,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash -490688698, now seen corresponding path program 9 times [2024-06-03 19:41:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:22,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813900291] [2024-06-03 19:41:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:22,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813900291] [2024-06-03 19:41:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813900291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:23,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:23,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:41:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016914533] [2024-06-03 19:41:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:23,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:41:23,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:41:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:41:23,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:41:23,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 26 transitions, 139 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:41:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:23,907 INFO L124 PetriNetUnfolderBase]: 28/74 cut-off events. [2024-06-03 19:41:23,907 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2024-06-03 19:41:23,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 74 events. 28/74 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 212. Up to 24 conditions per place. [2024-06-03 19:41:23,907 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-06-03 19:41:23,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 35 transitions, 199 flow [2024-06-03 19:41:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:41:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:41:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-03 19:41:23,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2708333333333333 [2024-06-03 19:41:23,908 INFO L175 Difference]: Start difference. First operand has 63 places, 26 transitions, 139 flow. Second operand 12 states and 104 transitions. [2024-06-03 19:41:23,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 35 transitions, 199 flow [2024-06-03 19:41:23,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 35 transitions, 163 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-03 19:41:23,909 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-06-03 19:41:23,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-06-03 19:41:23,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-03 19:41:23,909 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-06-03 19:41:23,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:23,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 19:41:23,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 19:41:23,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 19:41:23,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 19:41:23,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-03 19:41:23,922 INFO L445 BasicCegarLoop]: Path program histogram: [54, 26, 21, 16, 15, 11, 10, 9, 9, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:23,936 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:41:23,936 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:41:23,939 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 19:41:23,939 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 19:41:23,940 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:41:23 BasicIcfg [2024-06-03 19:41:23,940 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:41:23,940 INFO L158 Benchmark]: Toolchain (without parser) took 349531.39ms. Allocated memory was 176.2MB in the beginning and 1.2GB in the end (delta: 998.2MB). Free memory was 94.0MB in the beginning and 696.6MB in the end (delta: -602.6MB). Peak memory consumption was 397.5MB. Max. memory is 16.1GB. [2024-06-03 19:41:23,940 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 176.2MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:41:23,940 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:41:23,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.56ms. Allocated memory was 176.2MB in the beginning and 272.6MB in the end (delta: 96.5MB). Free memory was 93.6MB in the beginning and 221.4MB in the end (delta: -127.8MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2024-06-03 19:41:23,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.35ms. Allocated memory is still 272.6MB. Free memory was 221.4MB in the beginning and 219.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 19:41:23,941 INFO L158 Benchmark]: Boogie Preprocessor took 77.11ms. Allocated memory is still 272.6MB. Free memory was 219.3MB in the beginning and 215.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:41:23,941 INFO L158 Benchmark]: RCFGBuilder took 734.63ms. Allocated memory is still 272.6MB. Free memory was 215.9MB in the beginning and 163.7MB in the end (delta: 52.2MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-06-03 19:41:23,942 INFO L158 Benchmark]: TraceAbstraction took 347872.77ms. Allocated memory was 272.6MB in the beginning and 1.2GB in the end (delta: 901.8MB). Free memory was 162.7MB in the beginning and 696.6MB in the end (delta: -533.9MB). Peak memory consumption was 368.9MB. Max. memory is 16.1GB. [2024-06-03 19:41:23,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 176.2MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 768.56ms. Allocated memory was 176.2MB in the beginning and 272.6MB in the end (delta: 96.5MB). Free memory was 93.6MB in the beginning and 221.4MB in the end (delta: -127.8MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.35ms. Allocated memory is still 272.6MB. Free memory was 221.4MB in the beginning and 219.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.11ms. Allocated memory is still 272.6MB. Free memory was 219.3MB in the beginning and 215.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 734.63ms. Allocated memory is still 272.6MB. Free memory was 215.9MB in the beginning and 163.7MB in the end (delta: 52.2MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 347872.77ms. Allocated memory was 272.6MB in the beginning and 1.2GB in the end (delta: 901.8MB). Free memory was 162.7MB in the beginning and 696.6MB in the end (delta: -533.9MB). Peak memory consumption was 368.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 820]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 821]: 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, 51 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: 347.7s, OverallIterations: 214, TraceHistogramMax: 1, PathProgramHistogramMax: 54, EmptinessCheckTime: 0.0s, AutomataDifference: 154.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15224 SdHoareTripleChecker+Valid, 54.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13088 mSDsluCounter, 7857 SdHoareTripleChecker+Invalid, 47.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6866 mSDsCounter, 3802 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94652 IncrementalHoareTripleChecker+Invalid, 98454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3802 mSolverCounterUnsat, 991 mSDtfsCounter, 94652 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2621 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2620 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6343 ImplicationChecksByTransitivity, 72.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3252occurred in iteration=133, InterpolantAutomatonStates: 2273, 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, 1.3s SatisfiabilityAnalysisTime, 190.4s InterpolantComputationTime, 3720 NumberOfCodeBlocks, 3720 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 3506 ConstructedInterpolants, 0 QuantifiedInterpolants, 161015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 214 InterpolantComputations, 214 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! [2024-06-03 19:41:23,981 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