./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.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/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/rfi003_tso.i ./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.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-cde23df-m [2024-06-14 11:18:29,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:18:29,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:18:29,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:18:29,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:18:29,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:18:29,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:18:29,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:18:29,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:18:29,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:18:29,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:18:29,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:18:29,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:18:29,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:18:29,520 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:18:29,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:18:29,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:18:29,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:18:29,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:18:29,522 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:18:29,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:18:29,523 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:18:29,523 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:18:29,523 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:18:29,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:18:29,524 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:18:29,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:18:29,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:18:29,525 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:18:29,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:18:29,526 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:18:29,526 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:18:29,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:29,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:18:29,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:18:29,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:18:29,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:18:29,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:18:29,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:18:29,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:18:29,529 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:18:29,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:18:29,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:18:29,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:18:29,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:18:29,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:18:29,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:18:29,855 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:18:29,856 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:18:29,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi003_tso.yml/witness.yml [2024-06-14 11:18:30,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:18:30,025 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:18:30,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-14 11:18:31,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:18:31,435 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:18:31,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-14 11:18:31,460 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0c6c095/4515b5a48c2f46e5aaa2e8412222b827/FLAGd30121067 [2024-06-14 11:18:31,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0c6c095/4515b5a48c2f46e5aaa2e8412222b827 [2024-06-14 11:18:31,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:18:31,473 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:18:31,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:31,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:18:31,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:18:31,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:30" (1/2) ... [2024-06-14 11:18:31,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc8c396 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:30" (1/2) ... [2024-06-14 11:18:31,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@793e2a48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:31" (2/2) ... [2024-06-14 11:18:31,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc8c396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:31, skipping insertion in model container [2024-06-14 11:18:31,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:31" (2/2) ... [2024-06-14 11:18:31,487 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:18:31,572 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:18:31,573 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-14 11:18:31,574 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-14 11:18:31,574 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:18:31,574 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-14 11:18:31,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:18:32,055 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:32,069 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:18:32,220 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:32,259 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:18:32,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32 WrapperNode [2024-06-14 11:18:32,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:32,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:32,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:18:32,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:18:32,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,362 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-14 11:18:32,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:32,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:18:32,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:18:32,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:18:32,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,422 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]. [2024-06-14 11:18:32,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:18:32,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:18:32,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:18:32,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:18:32,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (1/1) ... [2024-06-14 11:18:32,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:32,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:18:32,554 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) [2024-06-14 11:18:32,631 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 [2024-06-14 11:18:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:18:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:18:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:18:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:18:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:18:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:18:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:18:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:18:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:18:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:18:32,653 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:18:32,797 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:18:32,800 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:18:33,186 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:18:33,186 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:18:33,381 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:18:33,381 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:18:33,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:33 BoogieIcfgContainer [2024-06-14 11:18:33,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:18:33,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:18:33,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:18:33,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:18:33,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:30" (1/4) ... [2024-06-14 11:18:33,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c58737 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:18:33, skipping insertion in model container [2024-06-14 11:18:33,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:18:31" (2/4) ... [2024-06-14 11:18:33,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c58737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:18:33, skipping insertion in model container [2024-06-14 11:18:33,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:32" (3/4) ... [2024-06-14 11:18:33,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c58737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:18:33, skipping insertion in model container [2024-06-14 11:18:33,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:33" (4/4) ... [2024-06-14 11:18:33,403 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-14 11:18:33,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:18:33,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:18:33,421 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:18:33,515 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:18:33,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:18:33,585 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 11:18:33,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:33,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:18:33,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:18:33,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 11:18:33,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:18:33,608 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;@5aa01546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:18:33,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:18:33,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:18:33,615 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:18:33,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:33,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:33,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:18:33,617 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)] === [2024-06-14 11:18:33,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:33,622 INFO L85 PathProgramCache]: Analyzing trace with hash -175134480, now seen corresponding path program 1 times [2024-06-14 11:18:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288291242] [2024-06-14 11:18:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288291242] [2024-06-14 11:18:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288291242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:34,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:34,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:18:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689191409] [2024-06-14 11:18:34,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:18:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:18:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:18:34,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:34,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:34,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:34,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:34,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:35,021 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-14 11:18:35,022 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 11:18:35,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 392 events. 216/392 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1458 event pairs, 133 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-14 11:18:35,028 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 11:18:35,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 127 flow [2024-06-14 11:18:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:18:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:18:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-14 11:18:35,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-14 11:18:35,042 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-06-14 11:18:35,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 127 flow [2024-06-14 11:18:35,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:35,048 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 11:18:35,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 11:18:35,053 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 11:18:35,053 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 11:18:35,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:35,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:35,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:18:35,055 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)] === [2024-06-14 11:18:35,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -800495793, now seen corresponding path program 1 times [2024-06-14 11:18:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:35,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061409580] [2024-06-14 11:18:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061409580] [2024-06-14 11:18:35,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061409580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:35,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:35,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:18:35,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376863464] [2024-06-14 11:18:35,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:35,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:18:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:18:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:18:35,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:35,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:35,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:35,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:35,888 INFO L124 PetriNetUnfolderBase]: 207/377 cut-off events. [2024-06-14 11:18:35,888 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-06-14 11:18:35,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 377 events. 207/377 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 76 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-14 11:18:35,892 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 31 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-06-14 11:18:35,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 177 flow [2024-06-14 11:18:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:18:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:18:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-14 11:18:35,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 11:18:35,894 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 66 transitions. [2024-06-14 11:18:35,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 177 flow [2024-06-14 11:18:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:18:35,896 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 11:18:35,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 11:18:35,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 11:18:35,897 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 11:18:35,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:35,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:35,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:35,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:18:35,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:35,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:35,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1926644317, now seen corresponding path program 1 times [2024-06-14 11:18:35,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817629600] [2024-06-14 11:18:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:36,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:36,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817629600] [2024-06-14 11:18:36,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817629600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:36,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:36,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:18:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377849971] [2024-06-14 11:18:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:18:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:18:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:18:36,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:36,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:36,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:36,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:36,886 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-14 11:18:36,886 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-14 11:18:36,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 433 events. 243/433 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1576 event pairs, 144 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-14 11:18:36,890 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-14 11:18:36,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 185 flow [2024-06-14 11:18:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-14 11:18:36,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:18:36,892 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 58 transitions. [2024-06-14 11:18:36,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 185 flow [2024-06-14 11:18:36,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:36,894 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-14 11:18:36,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 11:18:36,895 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 11:18:36,896 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-14 11:18:36,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:36,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:36,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:18:36,897 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)] === [2024-06-14 11:18:36,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 881829901, now seen corresponding path program 1 times [2024-06-14 11:18:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217146554] [2024-06-14 11:18:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:38,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217146554] [2024-06-14 11:18:38,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217146554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:38,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:38,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:38,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420095071] [2024-06-14 11:18:38,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:38,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:38,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:38,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:38,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:38,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:18:38,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:38,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:38,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:18:38,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:38,992 INFO L124 PetriNetUnfolderBase]: 239/425 cut-off events. [2024-06-14 11:18:38,993 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-06-14 11:18:38,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 425 events. 239/425 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1491 event pairs, 79 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-14 11:18:38,996 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-14 11:18:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 223 flow [2024-06-14 11:18:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-14 11:18:38,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-14 11:18:38,998 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 5 states and 71 transitions. [2024-06-14 11:18:38,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 223 flow [2024-06-14 11:18:39,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 212 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:39,001 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 116 flow [2024-06-14 11:18:39,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-14 11:18:39,002 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-06-14 11:18:39,002 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 116 flow [2024-06-14 11:18:39,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:39,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:18:39,003 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)] === [2024-06-14 11:18:39,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash 427699862, now seen corresponding path program 1 times [2024-06-14 11:18:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80758150] [2024-06-14 11:18:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:39,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80758150] [2024-06-14 11:18:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80758150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:39,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342496864] [2024-06-14 11:18:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:39,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:39,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:39,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:39,954 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-14 11:18:39,955 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-06-14 11:18:39,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 422 events. 237/422 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1531 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1176. Up to 407 conditions per place. [2024-06-14 11:18:39,958 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 28 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-14 11:18:39,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 210 flow [2024-06-14 11:18:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 11:18:39,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 11:18:39,960 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 116 flow. Second operand 6 states and 65 transitions. [2024-06-14 11:18:39,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 210 flow [2024-06-14 11:18:39,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:39,963 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 135 flow [2024-06-14 11:18:39,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-14 11:18:39,964 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-14 11:18:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 135 flow [2024-06-14 11:18:39,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:39,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:39,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:39,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:18:39,965 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)] === [2024-06-14 11:18:39,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1889463618, now seen corresponding path program 1 times [2024-06-14 11:18:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286981041] [2024-06-14 11:18:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286981041] [2024-06-14 11:18:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286981041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114055336] [2024-06-14 11:18:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:40,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:40,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:40,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:40,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:40,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:40,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:40,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:41,023 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-14 11:18:41,024 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-14 11:18:41,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 432 events. 243/432 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1527 event pairs, 82 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1272. Up to 385 conditions per place. [2024-06-14 11:18:41,028 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-14 11:18:41,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 283 flow [2024-06-14 11:18:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-14 11:18:41,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-14 11:18:41,031 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 135 flow. Second operand 6 states and 73 transitions. [2024-06-14 11:18:41,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 283 flow [2024-06-14 11:18:41,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 266 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:18:41,036 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 170 flow [2024-06-14 11:18:41,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-14 11:18:41,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-14 11:18:41,039 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 170 flow [2024-06-14 11:18:41,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:41,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:41,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:41,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:18:41,040 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)] === [2024-06-14 11:18:41,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 398810212, now seen corresponding path program 2 times [2024-06-14 11:18:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798363208] [2024-06-14 11:18:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:41,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798363208] [2024-06-14 11:18:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798363208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:41,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:41,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:18:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046624311] [2024-06-14 11:18:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:18:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:18:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:18:41,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:41,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:41,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:41,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:41,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:42,039 INFO L124 PetriNetUnfolderBase]: 239/428 cut-off events. [2024-06-14 11:18:42,039 INFO L125 PetriNetUnfolderBase]: For 1102/1104 co-relation queries the response was YES. [2024-06-14 11:18:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 428 events. 239/428 cut-off events. For 1102/1104 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 88 based on Foata normal form. 4/432 useless extension candidates. Maximal degree in co-relation 1363. Up to 382 conditions per place. [2024-06-14 11:18:42,043 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2024-06-14 11:18:42,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 285 flow [2024-06-14 11:18:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:18:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:18:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 11:18:42,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:18:42,045 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 170 flow. Second operand 6 states and 70 transitions. [2024-06-14 11:18:42,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 285 flow [2024-06-14 11:18:42,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 275 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:42,047 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 192 flow [2024-06-14 11:18:42,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-14 11:18:42,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-14 11:18:42,048 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 192 flow [2024-06-14 11:18:42,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:42,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:42,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:18:42,049 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)] === [2024-06-14 11:18:42,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash 373794700, now seen corresponding path program 1 times [2024-06-14 11:18:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188688696] [2024-06-14 11:18:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:42,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188688696] [2024-06-14 11:18:43,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188688696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:43,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:43,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:43,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510643943] [2024-06-14 11:18:43,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:43,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:43,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:43,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:43,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:43,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:43,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:43,373 INFO L124 PetriNetUnfolderBase]: 237/423 cut-off events. [2024-06-14 11:18:43,373 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2024-06-14 11:18:43,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 423 events. 237/423 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 99 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1415. Up to 405 conditions per place. [2024-06-14 11:18:43,376 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-14 11:18:43,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 308 flow [2024-06-14 11:18:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 11:18:43,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2024-06-14 11:18:43,378 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 192 flow. Second operand 7 states and 73 transitions. [2024-06-14 11:18:43,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 308 flow [2024-06-14 11:18:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:43,382 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 216 flow [2024-06-14 11:18:43,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-06-14 11:18:43,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-14 11:18:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 216 flow [2024-06-14 11:18:43,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:43,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:43,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:18:43,384 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)] === [2024-06-14 11:18:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1304893771, now seen corresponding path program 1 times [2024-06-14 11:18:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602909749] [2024-06-14 11:18:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:44,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602909749] [2024-06-14 11:18:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602909749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:44,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:44,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535396739] [2024-06-14 11:18:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:44,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:44,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:44,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:44,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:44,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:44,477 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-14 11:18:44,477 INFO L125 PetriNetUnfolderBase]: For 1763/1765 co-relation queries the response was YES. [2024-06-14 11:18:44,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 434 events. 243/434 cut-off events. For 1763/1765 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1543 event pairs, 85 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1514. Up to 383 conditions per place. [2024-06-14 11:18:44,480 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2024-06-14 11:18:44,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 387 flow [2024-06-14 11:18:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 11:18:44,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-14 11:18:44,482 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 216 flow. Second operand 7 states and 80 transitions. [2024-06-14 11:18:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 387 flow [2024-06-14 11:18:44,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 364 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:44,489 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 283 flow [2024-06-14 11:18:44,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-14 11:18:44,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-14 11:18:44,490 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 283 flow [2024-06-14 11:18:44,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:44,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:44,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:44,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:18:44,491 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)] === [2024-06-14 11:18:44,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash -521517571, now seen corresponding path program 2 times [2024-06-14 11:18:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:44,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520014154] [2024-06-14 11:18:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:44,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520014154] [2024-06-14 11:18:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520014154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:45,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:45,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330819478] [2024-06-14 11:18:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:45,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:45,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:45,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:45,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:45,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:45,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:45,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:45,595 INFO L124 PetriNetUnfolderBase]: 249/445 cut-off events. [2024-06-14 11:18:45,595 INFO L125 PetriNetUnfolderBase]: For 2282/2284 co-relation queries the response was YES. [2024-06-14 11:18:45,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 445 events. 249/445 cut-off events. For 2282/2284 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1605 event pairs, 81 based on Foata normal form. 4/449 useless extension candidates. Maximal degree in co-relation 1714. Up to 371 conditions per place. [2024-06-14 11:18:45,599 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2024-06-14 11:18:45,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 480 flow [2024-06-14 11:18:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 11:18:45,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-14 11:18:45,601 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 283 flow. Second operand 7 states and 81 transitions. [2024-06-14 11:18:45,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 480 flow [2024-06-14 11:18:45,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 464 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:45,606 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 342 flow [2024-06-14 11:18:45,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-14 11:18:45,607 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-14 11:18:45,607 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 342 flow [2024-06-14 11:18:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:45,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:45,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:18:45,608 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)] === [2024-06-14 11:18:45,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1297542121, now seen corresponding path program 3 times [2024-06-14 11:18:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762294177] [2024-06-14 11:18:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:46,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762294177] [2024-06-14 11:18:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762294177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:46,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:46,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:18:46,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850021291] [2024-06-14 11:18:46,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:18:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:46,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:18:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:18:46,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:46,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:46,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:46,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:46,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:46,669 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-14 11:18:46,670 INFO L125 PetriNetUnfolderBase]: For 2818/2820 co-relation queries the response was YES. [2024-06-14 11:18:46,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 447 events. 250/447 cut-off events. For 2818/2820 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 86 based on Foata normal form. 4/451 useless extension candidates. Maximal degree in co-relation 1813. Up to 395 conditions per place. [2024-06-14 11:18:46,674 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 43 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-14 11:18:46,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 505 flow [2024-06-14 11:18:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 11:18:46,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-14 11:18:46,676 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 342 flow. Second operand 7 states and 78 transitions. [2024-06-14 11:18:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 505 flow [2024-06-14 11:18:46,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 476 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:46,682 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 382 flow [2024-06-14 11:18:46,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-06-14 11:18:46,683 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-14 11:18:46,683 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 382 flow [2024-06-14 11:18:46,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-14 11:18:46,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:46,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:46,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:18:46,684 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)] === [2024-06-14 11:18:46,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1297265291, now seen corresponding path program 1 times [2024-06-14 11:18:46,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:46,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181339955] [2024-06-14 11:18:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:48,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181339955] [2024-06-14 11:18:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181339955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:48,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137297580] [2024-06-14 11:18:48,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:48,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:48,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:48,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 382 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:48,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:48,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:48,726 INFO L124 PetriNetUnfolderBase]: 248/442 cut-off events. [2024-06-14 11:18:48,726 INFO L125 PetriNetUnfolderBase]: For 3074/3074 co-relation queries the response was YES. [2024-06-14 11:18:48,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 442 events. 248/442 cut-off events. For 3074/3074 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1580 event pairs, 77 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1866. Up to 421 conditions per place. [2024-06-14 11:18:48,730 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-14 11:18:48,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 536 flow [2024-06-14 11:18:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 11:18:48,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-14 11:18:48,733 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 382 flow. Second operand 8 states and 81 transitions. [2024-06-14 11:18:48,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 536 flow [2024-06-14 11:18:48,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 513 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:48,743 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 404 flow [2024-06-14 11:18:48,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=404, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-06-14 11:18:48,745 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2024-06-14 11:18:48,745 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 404 flow [2024-06-14 11:18:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:48,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:48,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:18:48,746 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)] === [2024-06-14 11:18:48,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 996471487, now seen corresponding path program 1 times [2024-06-14 11:18:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690780058] [2024-06-14 11:18:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:49,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690780058] [2024-06-14 11:18:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690780058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:49,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234766698] [2024-06-14 11:18:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:49,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:49,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:49,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:49,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:49,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:49,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:50,312 INFO L124 PetriNetUnfolderBase]: 254/452 cut-off events. [2024-06-14 11:18:50,312 INFO L125 PetriNetUnfolderBase]: For 3569/3569 co-relation queries the response was YES. [2024-06-14 11:18:50,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 452 events. 254/452 cut-off events. For 3569/3569 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1612 event pairs, 55 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 1959. Up to 399 conditions per place. [2024-06-14 11:18:50,317 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 60 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-14 11:18:50,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 592 flow [2024-06-14 11:18:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 11:18:50,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.354978354978355 [2024-06-14 11:18:50,319 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 404 flow. Second operand 7 states and 82 transitions. [2024-06-14 11:18:50,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 592 flow [2024-06-14 11:18:50,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 563 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:50,325 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 416 flow [2024-06-14 11:18:50,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-14 11:18:50,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 11:18:50,327 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 416 flow [2024-06-14 11:18:50,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:50,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:50,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:18:50,328 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)] === [2024-06-14 11:18:50,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1008512835, now seen corresponding path program 1 times [2024-06-14 11:18:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164566677] [2024-06-14 11:18:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:50,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:51,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:51,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164566677] [2024-06-14 11:18:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164566677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:51,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:51,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:51,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459585099] [2024-06-14 11:18:51,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:51,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:51,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 416 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:51,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:51,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:51,557 INFO L124 PetriNetUnfolderBase]: 257/457 cut-off events. [2024-06-14 11:18:51,558 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2024-06-14 11:18:51,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 457 events. 257/457 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1653 event pairs, 75 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2066. Up to 404 conditions per place. [2024-06-14 11:18:51,562 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2024-06-14 11:18:51,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 602 flow [2024-06-14 11:18:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 11:18:51,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-14 11:18:51,563 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 416 flow. Second operand 7 states and 81 transitions. [2024-06-14 11:18:51,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 602 flow [2024-06-14 11:18:51,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 556 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:18:51,570 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 436 flow [2024-06-14 11:18:51,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-14 11:18:51,571 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 11:18:51,571 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 436 flow [2024-06-14 11:18:51,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:51,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:51,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:51,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:18:51,572 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)] === [2024-06-14 11:18:51,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1004044371, now seen corresponding path program 2 times [2024-06-14 11:18:51,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:51,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86585130] [2024-06-14 11:18:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:51,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:52,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:52,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86585130] [2024-06-14 11:18:52,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86585130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:52,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:52,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117439322] [2024-06-14 11:18:52,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:52,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:52,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:52,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:52,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:52,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 436 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:52,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:52,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:52,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:52,928 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-14 11:18:52,928 INFO L125 PetriNetUnfolderBase]: For 4714/4714 co-relation queries the response was YES. [2024-06-14 11:18:52,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 467 events. 263/467 cut-off events. For 4714/4714 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1689 event pairs, 55 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2142. Up to 382 conditions per place. [2024-06-14 11:18:52,932 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-14 11:18:52,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 676 flow [2024-06-14 11:18:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 11:18:52,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-14 11:18:52,933 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 436 flow. Second operand 7 states and 86 transitions. [2024-06-14 11:18:52,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 676 flow [2024-06-14 11:18:52,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 640 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 11:18:52,940 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 477 flow [2024-06-14 11:18:52,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-14 11:18:52,941 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-14 11:18:52,941 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 477 flow [2024-06-14 11:18:52,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:52,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:52,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:52,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:18:52,942 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)] === [2024-06-14 11:18:52,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash 996656061, now seen corresponding path program 1 times [2024-06-14 11:18:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:52,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517654149] [2024-06-14 11:18:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:53,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517654149] [2024-06-14 11:18:53,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517654149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:53,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:53,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:53,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126945863] [2024-06-14 11:18:53,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:53,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:53,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:53,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:53,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:53,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:53,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:54,233 INFO L124 PetriNetUnfolderBase]: 269/478 cut-off events. [2024-06-14 11:18:54,233 INFO L125 PetriNetUnfolderBase]: For 5473/5475 co-relation queries the response was YES. [2024-06-14 11:18:54,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 478 events. 269/478 cut-off events. For 5473/5475 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1751 event pairs, 80 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 2260. Up to 419 conditions per place. [2024-06-14 11:18:54,237 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-06-14 11:18:54,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 681 flow [2024-06-14 11:18:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 11:18:54,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-14 11:18:54,239 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 477 flow. Second operand 8 states and 89 transitions. [2024-06-14 11:18:54,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 681 flow [2024-06-14 11:18:54,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 657 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:54,246 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 514 flow [2024-06-14 11:18:54,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-14 11:18:54,247 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-14 11:18:54,247 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 514 flow [2024-06-14 11:18:54,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:54,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:54,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:54,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:18:54,248 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)] === [2024-06-14 11:18:54,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1004551139, now seen corresponding path program 2 times [2024-06-14 11:18:54,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:54,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810701109] [2024-06-14 11:18:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:55,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810701109] [2024-06-14 11:18:55,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810701109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:55,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:55,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:55,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410304578] [2024-06-14 11:18:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:55,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:55,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:55,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:55,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:55,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:55,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:55,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:55,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:55,458 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-14 11:18:55,458 INFO L125 PetriNetUnfolderBase]: For 6160/6162 co-relation queries the response was YES. [2024-06-14 11:18:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 489 events. 275/489 cut-off events. For 6160/6162 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1794 event pairs, 83 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 2407. Up to 429 conditions per place. [2024-06-14 11:18:55,463 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 57 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-14 11:18:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 712 flow [2024-06-14 11:18:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 11:18:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 11:18:55,464 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 514 flow. Second operand 8 states and 87 transitions. [2024-06-14 11:18:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 712 flow [2024-06-14 11:18:55,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 667 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:55,472 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 532 flow [2024-06-14 11:18:55,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-14 11:18:55,473 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-14 11:18:55,473 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 532 flow [2024-06-14 11:18:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:55,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:55,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:55,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:18:55,474 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)] === [2024-06-14 11:18:55,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1560825011, now seen corresponding path program 3 times [2024-06-14 11:18:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906534914] [2024-06-14 11:18:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906534914] [2024-06-14 11:18:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906534914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:56,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:56,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988545741] [2024-06-14 11:18:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:56,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:56,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:56,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:56,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:56,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:56,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:56,765 INFO L124 PetriNetUnfolderBase]: 286/507 cut-off events. [2024-06-14 11:18:56,765 INFO L125 PetriNetUnfolderBase]: For 7100/7102 co-relation queries the response was YES. [2024-06-14 11:18:56,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 507 events. 286/507 cut-off events. For 7100/7102 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1875 event pairs, 82 based on Foata normal form. 4/511 useless extension candidates. Maximal degree in co-relation 2577. Up to 390 conditions per place. [2024-06-14 11:18:56,769 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 53 selfloop transitions, 32 changer transitions 0/87 dead transitions. [2024-06-14 11:18:56,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 870 flow [2024-06-14 11:18:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 11:18:56,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:18:56,770 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 532 flow. Second operand 8 states and 93 transitions. [2024-06-14 11:18:56,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 870 flow [2024-06-14 11:18:56,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 823 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:56,780 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 618 flow [2024-06-14 11:18:56,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=618, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-14 11:18:56,781 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-14 11:18:56,781 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 618 flow [2024-06-14 11:18:56,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:56,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:56,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:18:56,782 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)] === [2024-06-14 11:18:56,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1107418139, now seen corresponding path program 2 times [2024-06-14 11:18:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680304295] [2024-06-14 11:18:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:57,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680304295] [2024-06-14 11:18:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680304295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:57,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:57,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915510137] [2024-06-14 11:18:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:57,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:57,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 618 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:57,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:57,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:57,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:58,145 INFO L124 PetriNetUnfolderBase]: 284/504 cut-off events. [2024-06-14 11:18:58,146 INFO L125 PetriNetUnfolderBase]: For 7679/7681 co-relation queries the response was YES. [2024-06-14 11:18:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2683 conditions, 504 events. 284/504 cut-off events. For 7679/7681 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1873 event pairs, 86 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2642. Up to 449 conditions per place. [2024-06-14 11:18:58,150 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-06-14 11:18:58,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 800 flow [2024-06-14 11:18:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:18:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:18:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 11:18:58,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2024-06-14 11:18:58,151 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 618 flow. Second operand 7 states and 79 transitions. [2024-06-14 11:18:58,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 800 flow [2024-06-14 11:18:58,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 763 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:58,162 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 625 flow [2024-06-14 11:18:58,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-14 11:18:58,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2024-06-14 11:18:58,163 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 625 flow [2024-06-14 11:18:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:58,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:58,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:58,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:18:58,164 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)] === [2024-06-14 11:18:58,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1115995777, now seen corresponding path program 4 times [2024-06-14 11:18:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85472309] [2024-06-14 11:18:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:58,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:58,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:58,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85472309] [2024-06-14 11:18:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85472309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:58,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:58,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:18:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375300688] [2024-06-14 11:18:58,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:58,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:18:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:18:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:18:58,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:18:58,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:58,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:58,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:18:58,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:59,207 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-14 11:18:59,207 INFO L125 PetriNetUnfolderBase]: For 8168/8168 co-relation queries the response was YES. [2024-06-14 11:18:59,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 496 events. 280/496 cut-off events. For 8168/8168 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1825 event pairs, 79 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2630. Up to 472 conditions per place. [2024-06-14 11:18:59,212 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-14 11:18:59,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 811 flow [2024-06-14 11:18:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:18:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:18:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 11:18:59,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-14 11:18:59,214 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 625 flow. Second operand 8 states and 82 transitions. [2024-06-14 11:18:59,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 811 flow [2024-06-14 11:18:59,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 742 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 11:18:59,223 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 585 flow [2024-06-14 11:18:59,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-14 11:18:59,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 11:18:59,224 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 585 flow [2024-06-14 11:18:59,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:59,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:59,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:59,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:18:59,225 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)] === [2024-06-14 11:18:59,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:59,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1107417953, now seen corresponding path program 3 times [2024-06-14 11:18:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:59,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970583712] [2024-06-14 11:18:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:00,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:00,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970583712] [2024-06-14 11:19:00,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970583712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:00,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:00,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518943900] [2024-06-14 11:19:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:00,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:00,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:00,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:00,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:00,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:00,409 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-14 11:19:00,409 INFO L125 PetriNetUnfolderBase]: For 7772/7774 co-relation queries the response was YES. [2024-06-14 11:19:00,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 492 events. 276/492 cut-off events. For 7772/7774 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1818 event pairs, 74 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2531. Up to 408 conditions per place. [2024-06-14 11:19:00,416 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-14 11:19:00,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 771 flow [2024-06-14 11:19:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:19:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:19:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 11:19:00,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-14 11:19:00,418 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 585 flow. Second operand 7 states and 83 transitions. [2024-06-14 11:19:00,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 771 flow [2024-06-14 11:19:00,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 736 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:00,430 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 595 flow [2024-06-14 11:19:00,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-14 11:19:00,430 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 11:19:00,430 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 595 flow [2024-06-14 11:19:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:00,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:00,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:00,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:19:00,431 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)] === [2024-06-14 11:19:00,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1116006689, now seen corresponding path program 1 times [2024-06-14 11:19:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134136027] [2024-06-14 11:19:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:02,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:02,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134136027] [2024-06-14 11:19:02,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134136027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:02,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:02,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937836769] [2024-06-14 11:19:02,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:02,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:02,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:02,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:02,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:02,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:02,686 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-14 11:19:02,687 INFO L125 PetriNetUnfolderBase]: For 8078/8078 co-relation queries the response was YES. [2024-06-14 11:19:02,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 487 events. 274/487 cut-off events. For 8078/8078 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 77 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 2550. Up to 463 conditions per place. [2024-06-14 11:19:02,691 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-14 11:19:02,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 84 transitions, 791 flow [2024-06-14 11:19:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 11:19:02,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-14 11:19:02,693 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 595 flow. Second operand 8 states and 82 transitions. [2024-06-14 11:19:02,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 84 transitions, 791 flow [2024-06-14 11:19:02,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 84 transitions, 740 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:02,705 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 594 flow [2024-06-14 11:19:02,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-06-14 11:19:02,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-06-14 11:19:02,706 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 594 flow [2024-06-14 11:19:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:02,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:02,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:19:02,706 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)] === [2024-06-14 11:19:02,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1202850814, now seen corresponding path program 1 times [2024-06-14 11:19:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:02,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759147638] [2024-06-14 11:19:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:02,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759147638] [2024-06-14 11:19:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759147638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:03,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:03,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885450460] [2024-06-14 11:19:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:03,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:03,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:03,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:03,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:03,921 INFO L124 PetriNetUnfolderBase]: 283/502 cut-off events. [2024-06-14 11:19:03,922 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-06-14 11:19:03,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 502 events. 283/502 cut-off events. For 8828/8828 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1854 event pairs, 55 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2640. Up to 443 conditions per place. [2024-06-14 11:19:03,927 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-14 11:19:03,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 850 flow [2024-06-14 11:19:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:19:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 11:19:03,929 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 594 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:19:03,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 850 flow [2024-06-14 11:19:03,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 820 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:03,942 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 639 flow [2024-06-14 11:19:03,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=639, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-14 11:19:03,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-14 11:19:03,943 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 639 flow [2024-06-14 11:19:03,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:03,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:03,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:19:03,944 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)] === [2024-06-14 11:19:03,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1199131744, now seen corresponding path program 2 times [2024-06-14 11:19:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617609334] [2024-06-14 11:19:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617609334] [2024-06-14 11:19:04,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617609334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:04,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310435337] [2024-06-14 11:19:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:04,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:04,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:04,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:04,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:05,183 INFO L124 PetriNetUnfolderBase]: 289/512 cut-off events. [2024-06-14 11:19:05,183 INFO L125 PetriNetUnfolderBase]: For 9675/9675 co-relation queries the response was YES. [2024-06-14 11:19:05,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 512 events. 289/512 cut-off events. For 9675/9675 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1907 event pairs, 56 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2808. Up to 421 conditions per place. [2024-06-14 11:19:05,189 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-14 11:19:05,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 887 flow [2024-06-14 11:19:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:19:05,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:19:05,192 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 639 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:19:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 887 flow [2024-06-14 11:19:05,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 854 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:05,207 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 683 flow [2024-06-14 11:19:05,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-06-14 11:19:05,208 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-14 11:19:05,208 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 683 flow [2024-06-14 11:19:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:05,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:05,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:05,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:19:05,209 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)] === [2024-06-14 11:19:05,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash 687467440, now seen corresponding path program 3 times [2024-06-14 11:19:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:05,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817705674] [2024-06-14 11:19:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:05,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:06,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:06,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817705674] [2024-06-14 11:19:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817705674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:06,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:06,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:06,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785871004] [2024-06-14 11:19:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:06,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:06,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:06,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:06,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 683 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:06,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:06,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:06,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:06,394 INFO L124 PetriNetUnfolderBase]: 300/530 cut-off events. [2024-06-14 11:19:06,395 INFO L125 PetriNetUnfolderBase]: For 11074/11074 co-relation queries the response was YES. [2024-06-14 11:19:06,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 530 events. 300/530 cut-off events. For 11074/11074 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2005 event pairs, 54 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3013. Up to 410 conditions per place. [2024-06-14 11:19:06,400 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2024-06-14 11:19:06,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 1031 flow [2024-06-14 11:19:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 11:19:06,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-14 11:19:06,403 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 683 flow. Second operand 8 states and 97 transitions. [2024-06-14 11:19:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 1031 flow [2024-06-14 11:19:06,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 104 transitions, 970 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:06,420 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 746 flow [2024-06-14 11:19:06,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=746, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-14 11:19:06,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2024-06-14 11:19:06,421 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 746 flow [2024-06-14 11:19:06,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:06,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:06,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:06,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:19:06,422 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)] === [2024-06-14 11:19:06,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:06,423 INFO L85 PathProgramCache]: Analyzing trace with hash 687467657, now seen corresponding path program 1 times [2024-06-14 11:19:06,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:06,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902393086] [2024-06-14 11:19:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902393086] [2024-06-14 11:19:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902393086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:07,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:07,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189521862] [2024-06-14 11:19:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:07,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:07,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:07,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:07,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:07,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:07,814 INFO L124 PetriNetUnfolderBase]: 303/535 cut-off events. [2024-06-14 11:19:07,814 INFO L125 PetriNetUnfolderBase]: For 11855/11855 co-relation queries the response was YES. [2024-06-14 11:19:07,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 535 events. 303/535 cut-off events. For 11855/11855 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2032 event pairs, 75 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3121. Up to 471 conditions per place. [2024-06-14 11:19:07,819 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 78 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-14 11:19:07,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1006 flow [2024-06-14 11:19:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 11:19:07,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:19:07,821 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 746 flow. Second operand 8 states and 90 transitions. [2024-06-14 11:19:07,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 1006 flow [2024-06-14 11:19:07,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 957 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:07,841 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 775 flow [2024-06-14 11:19:07,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=775, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-06-14 11:19:07,841 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2024-06-14 11:19:07,841 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 775 flow [2024-06-14 11:19:07,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:07,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:07,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:19:07,842 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)] === [2024-06-14 11:19:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 831567716, now seen corresponding path program 1 times [2024-06-14 11:19:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439997267] [2024-06-14 11:19:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439997267] [2024-06-14 11:19:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439997267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:09,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:09,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579859560] [2024-06-14 11:19:09,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:09,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:09,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:09,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:09,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:09,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:09,572 INFO L124 PetriNetUnfolderBase]: 309/546 cut-off events. [2024-06-14 11:19:09,573 INFO L125 PetriNetUnfolderBase]: For 13019/13021 co-relation queries the response was YES. [2024-06-14 11:19:09,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3270 conditions, 546 events. 309/546 cut-off events. For 13019/13021 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2085 event pairs, 78 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 3218. Up to 479 conditions per place. [2024-06-14 11:19:09,578 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 82 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-06-14 11:19:09,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1047 flow [2024-06-14 11:19:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 11:19:09,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-14 11:19:09,580 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 775 flow. Second operand 9 states and 98 transitions. [2024-06-14 11:19:09,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1047 flow [2024-06-14 11:19:09,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 999 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:09,603 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 798 flow [2024-06-14 11:19:09,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=798, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-06-14 11:19:09,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-14 11:19:09,603 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 798 flow [2024-06-14 11:19:09,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:09,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:09,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:09,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:19:09,604 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)] === [2024-06-14 11:19:09,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1342338844, now seen corresponding path program 2 times [2024-06-14 11:19:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868871002] [2024-06-14 11:19:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:10,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:10,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868871002] [2024-06-14 11:19:10,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868871002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:10,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012242438] [2024-06-14 11:19:10,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:10,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:10,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:10,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:10,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:10,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:10,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:10,959 INFO L124 PetriNetUnfolderBase]: 331/581 cut-off events. [2024-06-14 11:19:10,959 INFO L125 PetriNetUnfolderBase]: For 15340/15340 co-relation queries the response was YES. [2024-06-14 11:19:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 581 events. 331/581 cut-off events. For 15340/15340 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2250 event pairs, 75 based on Foata normal form. 4/585 useless extension candidates. Maximal degree in co-relation 3497. Up to 534 conditions per place. [2024-06-14 11:19:10,965 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 88 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-14 11:19:10,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1142 flow [2024-06-14 11:19:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 11:19:10,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986531986531985 [2024-06-14 11:19:10,970 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 798 flow. Second operand 9 states and 95 transitions. [2024-06-14 11:19:10,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1142 flow [2024-06-14 11:19:10,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 1087 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:10,998 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 838 flow [2024-06-14 11:19:10,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-06-14 11:19:11,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-14 11:19:11,004 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 838 flow [2024-06-14 11:19:11,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:11,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:11,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:11,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:19:11,005 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)] === [2024-06-14 11:19:11,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:11,006 INFO L85 PathProgramCache]: Analyzing trace with hash -29573600, now seen corresponding path program 4 times [2024-06-14 11:19:11,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:11,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332553405] [2024-06-14 11:19:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:11,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:11,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332553405] [2024-06-14 11:19:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332553405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:11,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234376422] [2024-06-14 11:19:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:11,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:11,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:11,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:11,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:11,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:12,180 INFO L124 PetriNetUnfolderBase]: 337/593 cut-off events. [2024-06-14 11:19:12,181 INFO L125 PetriNetUnfolderBase]: For 15915/15917 co-relation queries the response was YES. [2024-06-14 11:19:12,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 593 events. 337/593 cut-off events. For 15915/15917 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2310 event pairs, 73 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3636. Up to 496 conditions per place. [2024-06-14 11:19:12,186 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 82 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-14 11:19:12,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 1118 flow [2024-06-14 11:19:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:19:12,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 11:19:12,188 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 838 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:19:12,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 1118 flow [2024-06-14 11:19:12,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 110 transitions, 1078 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:12,214 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 887 flow [2024-06-14 11:19:12,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-14 11:19:12,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-14 11:19:12,216 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 887 flow [2024-06-14 11:19:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:12,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:12,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:12,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:19:12,216 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)] === [2024-06-14 11:19:12,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:12,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1140942124, now seen corresponding path program 5 times [2024-06-14 11:19:12,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:12,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313237437] [2024-06-14 11:19:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313237437] [2024-06-14 11:19:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313237437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:13,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592428061] [2024-06-14 11:19:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:13,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:13,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 887 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:13,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:13,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:13,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:13,369 INFO L124 PetriNetUnfolderBase]: 343/603 cut-off events. [2024-06-14 11:19:13,370 INFO L125 PetriNetUnfolderBase]: For 17273/17275 co-relation queries the response was YES. [2024-06-14 11:19:13,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 603 events. 343/603 cut-off events. For 17273/17275 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2369 event pairs, 67 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 3784. Up to 438 conditions per place. [2024-06-14 11:19:13,374 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 73 selfloop transitions, 42 changer transitions 0/117 dead transitions. [2024-06-14 11:19:13,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 1285 flow [2024-06-14 11:19:13,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 11:19:13,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:13,375 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 887 flow. Second operand 8 states and 96 transitions. [2024-06-14 11:19:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 1285 flow [2024-06-14 11:19:13,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1212 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:13,394 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 971 flow [2024-06-14 11:19:13,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-14 11:19:13,395 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-14 11:19:13,395 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 971 flow [2024-06-14 11:19:13,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:13,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:13,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:13,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:19:13,396 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)] === [2024-06-14 11:19:13,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 236131616, now seen corresponding path program 3 times [2024-06-14 11:19:13,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:13,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355502280] [2024-06-14 11:19:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:14,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355502280] [2024-06-14 11:19:14,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355502280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:14,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:14,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:14,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994654763] [2024-06-14 11:19:14,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:14,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:14,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:14,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:14,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:14,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:14,983 INFO L124 PetriNetUnfolderBase]: 359/627 cut-off events. [2024-06-14 11:19:14,983 INFO L125 PetriNetUnfolderBase]: For 19344/19344 co-relation queries the response was YES. [2024-06-14 11:19:14,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4107 conditions, 627 events. 359/627 cut-off events. For 19344/19344 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2484 event pairs, 75 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4050. Up to 555 conditions per place. [2024-06-14 11:19:14,988 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-14 11:19:14,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 1353 flow [2024-06-14 11:19:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 11:19:14,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-14 11:19:14,990 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 971 flow. Second operand 9 states and 98 transitions. [2024-06-14 11:19:14,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 1353 flow [2024-06-14 11:19:15,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 1291 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 11:19:15,019 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 1027 flow [2024-06-14 11:19:15,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1027, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-06-14 11:19:15,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 89 predicate places. [2024-06-14 11:19:15,020 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 1027 flow [2024-06-14 11:19:15,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:15,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:15,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:15,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:19:15,021 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)] === [2024-06-14 11:19:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1140934188, now seen corresponding path program 4 times [2024-06-14 11:19:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807929956] [2024-06-14 11:19:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807929956] [2024-06-14 11:19:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807929956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837862306] [2024-06-14 11:19:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:16,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:16,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:16,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 1027 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:16,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:16,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:17,175 INFO L124 PetriNetUnfolderBase]: 365/639 cut-off events. [2024-06-14 11:19:17,176 INFO L125 PetriNetUnfolderBase]: For 20646/20648 co-relation queries the response was YES. [2024-06-14 11:19:17,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 639 events. 365/639 cut-off events. For 20646/20648 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2573 event pairs, 81 based on Foata normal form. 4/643 useless extension candidates. Maximal degree in co-relation 4219. Up to 425 conditions per place. [2024-06-14 11:19:17,182 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 45 changer transitions 0/125 dead transitions. [2024-06-14 11:19:17,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 1447 flow [2024-06-14 11:19:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:19:17,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:19:17,184 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 1027 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:19:17,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 1447 flow [2024-06-14 11:19:17,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 1402 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:17,213 INFO L231 Difference]: Finished difference. Result has 126 places, 110 transitions, 1170 flow [2024-06-14 11:19:17,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=126, PETRI_TRANSITIONS=110} [2024-06-14 11:19:17,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-14 11:19:17,215 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 110 transitions, 1170 flow [2024-06-14 11:19:17,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:17,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:17,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:17,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:19:17,216 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)] === [2024-06-14 11:19:17,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1397644227, now seen corresponding path program 2 times [2024-06-14 11:19:17,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:17,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500445308] [2024-06-14 11:19:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:17,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500445308] [2024-06-14 11:19:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500445308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:18,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986963830] [2024-06-14 11:19:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:18,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:18,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 110 transitions, 1170 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:18,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:18,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:18,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:18,612 INFO L124 PetriNetUnfolderBase]: 363/636 cut-off events. [2024-06-14 11:19:18,613 INFO L125 PetriNetUnfolderBase]: For 21167/21169 co-relation queries the response was YES. [2024-06-14 11:19:18,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 636 events. 363/636 cut-off events. For 21167/21169 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2551 event pairs, 91 based on Foata normal form. 3/639 useless extension candidates. Maximal degree in co-relation 4392. Up to 570 conditions per place. [2024-06-14 11:19:18,617 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 96 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-14 11:19:18,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 120 transitions, 1436 flow [2024-06-14 11:19:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 11:19:18,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:19:18,625 INFO L175 Difference]: Start difference. First operand has 126 places, 110 transitions, 1170 flow. Second operand 8 states and 88 transitions. [2024-06-14 11:19:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 120 transitions, 1436 flow [2024-06-14 11:19:18,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 1373 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:18,670 INFO L231 Difference]: Finished difference. Result has 129 places, 110 transitions, 1159 flow [2024-06-14 11:19:18,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=129, PETRI_TRANSITIONS=110} [2024-06-14 11:19:18,670 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-14 11:19:18,671 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 110 transitions, 1159 flow [2024-06-14 11:19:18,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:18,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:18,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:18,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:19:18,671 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)] === [2024-06-14 11:19:18,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1397644444, now seen corresponding path program 6 times [2024-06-14 11:19:18,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:18,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184672455] [2024-06-14 11:19:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184672455] [2024-06-14 11:19:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184672455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:19,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181194769] [2024-06-14 11:19:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:19,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:19,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:19,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 110 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:19,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:19,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:19,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:19,854 INFO L124 PetriNetUnfolderBase]: 369/646 cut-off events. [2024-06-14 11:19:19,854 INFO L125 PetriNetUnfolderBase]: For 22767/22769 co-relation queries the response was YES. [2024-06-14 11:19:19,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 646 events. 369/646 cut-off events. For 22767/22769 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2604 event pairs, 79 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4482. Up to 529 conditions per place. [2024-06-14 11:19:19,859 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 94 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-06-14 11:19:19,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 1553 flow [2024-06-14 11:19:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 11:19:19,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36742424242424243 [2024-06-14 11:19:19,865 INFO L175 Difference]: Start difference. First operand has 129 places, 110 transitions, 1159 flow. Second operand 8 states and 97 transitions. [2024-06-14 11:19:19,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 1553 flow [2024-06-14 11:19:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1481 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:19,909 INFO L231 Difference]: Finished difference. Result has 130 places, 112 transitions, 1191 flow [2024-06-14 11:19:19,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1191, PETRI_PLACES=130, PETRI_TRANSITIONS=112} [2024-06-14 11:19:19,910 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-14 11:19:19,910 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 112 transitions, 1191 flow [2024-06-14 11:19:19,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:19,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:19,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:19,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:19:19,911 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)] === [2024-06-14 11:19:19,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1883571684, now seen corresponding path program 7 times [2024-06-14 11:19:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700441031] [2024-06-14 11:19:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700441031] [2024-06-14 11:19:20,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700441031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:20,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:20,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:20,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855779205] [2024-06-14 11:19:20,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:20,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:20,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:20,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 112 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:20,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:20,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:20,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:21,278 INFO L124 PetriNetUnfolderBase]: 365/640 cut-off events. [2024-06-14 11:19:21,278 INFO L125 PetriNetUnfolderBase]: For 22967/22969 co-relation queries the response was YES. [2024-06-14 11:19:21,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4511 conditions, 640 events. 365/640 cut-off events. For 22967/22969 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2584 event pairs, 81 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4445. Up to 547 conditions per place. [2024-06-14 11:19:21,284 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 98 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2024-06-14 11:19:21,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 1469 flow [2024-06-14 11:19:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 11:19:21,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:19:21,286 INFO L175 Difference]: Start difference. First operand has 130 places, 112 transitions, 1191 flow. Second operand 8 states and 92 transitions. [2024-06-14 11:19:21,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 1469 flow [2024-06-14 11:19:21,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 1327 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:21,332 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 1102 flow [2024-06-14 11:19:21,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-14 11:19:21,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2024-06-14 11:19:21,333 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 1102 flow [2024-06-14 11:19:21,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:21,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:21,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:21,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:19:21,334 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)] === [2024-06-14 11:19:21,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:21,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1883787010, now seen corresponding path program 5 times [2024-06-14 11:19:21,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:21,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993811100] [2024-06-14 11:19:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:22,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993811100] [2024-06-14 11:19:22,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993811100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:22,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:22,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:22,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484581791] [2024-06-14 11:19:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:22,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:22,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:22,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:22,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:22,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:22,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:23,056 INFO L124 PetriNetUnfolderBase]: 366/642 cut-off events. [2024-06-14 11:19:23,056 INFO L125 PetriNetUnfolderBase]: For 23440/23442 co-relation queries the response was YES. [2024-06-14 11:19:23,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 642 events. 366/642 cut-off events. For 23440/23442 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2585 event pairs, 92 based on Foata normal form. 4/646 useless extension candidates. Maximal degree in co-relation 4328. Up to 574 conditions per place. [2024-06-14 11:19:23,061 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 103 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2024-06-14 11:19:23,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 1421 flow [2024-06-14 11:19:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 11:19:23,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 11:19:23,071 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 1102 flow. Second operand 9 states and 96 transitions. [2024-06-14 11:19:23,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 1421 flow [2024-06-14 11:19:23,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 126 transitions, 1365 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:23,123 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 1130 flow [2024-06-14 11:19:23,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-14 11:19:23,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-14 11:19:23,124 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 1130 flow [2024-06-14 11:19:23,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:23,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:23,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:19:23,124 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)] === [2024-06-14 11:19:23,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash 236469950, now seen corresponding path program 1 times [2024-06-14 11:19:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652199392] [2024-06-14 11:19:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652199392] [2024-06-14 11:19:24,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652199392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:24,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:24,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592448920] [2024-06-14 11:19:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:24,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:24,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:24,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:25,028 INFO L124 PetriNetUnfolderBase]: 363/635 cut-off events. [2024-06-14 11:19:25,028 INFO L125 PetriNetUnfolderBase]: For 23496/23496 co-relation queries the response was YES. [2024-06-14 11:19:25,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4348 conditions, 635 events. 363/635 cut-off events. For 23496/23496 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2532 event pairs, 87 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4281. Up to 605 conditions per place. [2024-06-14 11:19:25,032 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 108 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-14 11:19:25,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1396 flow [2024-06-14 11:19:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 11:19:25,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2996632996632997 [2024-06-14 11:19:25,033 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 1130 flow. Second operand 9 states and 89 transitions. [2024-06-14 11:19:25,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1396 flow [2024-06-14 11:19:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 124 transitions, 1331 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:25,063 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1097 flow [2024-06-14 11:19:25,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-14 11:19:25,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-14 11:19:25,064 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1097 flow [2024-06-14 11:19:25,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:25,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:25,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:19:25,065 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)] === [2024-06-14 11:19:25,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1363469376, now seen corresponding path program 1 times [2024-06-14 11:19:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370040301] [2024-06-14 11:19:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:26,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370040301] [2024-06-14 11:19:26,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370040301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:26,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:26,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:26,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524423118] [2024-06-14 11:19:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:26,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:26,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:26,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:26,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:26,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:26,414 INFO L124 PetriNetUnfolderBase]: 374/656 cut-off events. [2024-06-14 11:19:26,414 INFO L125 PetriNetUnfolderBase]: For 26057/26057 co-relation queries the response was YES. [2024-06-14 11:19:26,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 656 events. 374/656 cut-off events. For 26057/26057 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2688 event pairs, 49 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4425. Up to 565 conditions per place. [2024-06-14 11:19:26,419 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 117 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-14 11:19:26,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1501 flow [2024-06-14 11:19:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:19:26,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:19:26,421 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1097 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:19:26,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1501 flow [2024-06-14 11:19:26,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 1463 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:26,472 INFO L231 Difference]: Finished difference. Result has 137 places, 116 transitions, 1117 flow [2024-06-14 11:19:26,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=137, PETRI_TRANSITIONS=116} [2024-06-14 11:19:26,473 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-14 11:19:26,473 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 116 transitions, 1117 flow [2024-06-14 11:19:26,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:26,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:26,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:26,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:19:26,474 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)] === [2024-06-14 11:19:26,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1063705588, now seen corresponding path program 2 times [2024-06-14 11:19:26,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657335208] [2024-06-14 11:19:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657335208] [2024-06-14 11:19:27,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657335208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:27,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:27,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224906582] [2024-06-14 11:19:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:27,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:27,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:27,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:27,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:27,916 INFO L124 PetriNetUnfolderBase]: 371/651 cut-off events. [2024-06-14 11:19:27,917 INFO L125 PetriNetUnfolderBase]: For 26026/26026 co-relation queries the response was YES. [2024-06-14 11:19:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 651 events. 371/651 cut-off events. For 26026/26026 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2648 event pairs, 68 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4377. Up to 589 conditions per place. [2024-06-14 11:19:27,921 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 116 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-14 11:19:27,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 1417 flow [2024-06-14 11:19:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 11:19:27,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:19:27,922 INFO L175 Difference]: Start difference. First operand has 137 places, 116 transitions, 1117 flow. Second operand 8 states and 90 transitions. [2024-06-14 11:19:27,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 1417 flow [2024-06-14 11:19:27,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 132 transitions, 1384 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:27,968 INFO L231 Difference]: Finished difference. Result has 140 places, 116 transitions, 1117 flow [2024-06-14 11:19:27,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=140, PETRI_TRANSITIONS=116} [2024-06-14 11:19:27,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-14 11:19:27,969 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 116 transitions, 1117 flow [2024-06-14 11:19:27,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:27,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:27,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:19:27,970 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)] === [2024-06-14 11:19:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash -278813960, now seen corresponding path program 1 times [2024-06-14 11:19:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163117343] [2024-06-14 11:19:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:28,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:28,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163117343] [2024-06-14 11:19:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163117343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:28,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:19:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596021984] [2024-06-14 11:19:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:28,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:19:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:19:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:19:28,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:28,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:28,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:28,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:28,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:29,312 INFO L124 PetriNetUnfolderBase]: 369/648 cut-off events. [2024-06-14 11:19:29,313 INFO L125 PetriNetUnfolderBase]: For 26044/26044 co-relation queries the response was YES. [2024-06-14 11:19:29,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 648 events. 369/648 cut-off events. For 26044/26044 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2636 event pairs, 68 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 4355. Up to 583 conditions per place. [2024-06-14 11:19:29,317 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 113 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-14 11:19:29,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1419 flow [2024-06-14 11:19:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:19:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:19:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 11:19:29,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2024-06-14 11:19:29,321 INFO L175 Difference]: Start difference. First operand has 140 places, 116 transitions, 1117 flow. Second operand 8 states and 91 transitions. [2024-06-14 11:19:29,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1419 flow [2024-06-14 11:19:29,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 1383 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:29,374 INFO L231 Difference]: Finished difference. Result has 141 places, 116 transitions, 1123 flow [2024-06-14 11:19:29,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1123, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2024-06-14 11:19:29,375 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-14 11:19:29,375 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 1123 flow [2024-06-14 11:19:29,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:29,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:29,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:29,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:19:29,376 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)] === [2024-06-14 11:19:29,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1063585308, now seen corresponding path program 1 times [2024-06-14 11:19:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:29,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18157063] [2024-06-14 11:19:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:30,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:30,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18157063] [2024-06-14 11:19:30,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18157063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:30,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:30,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:30,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58692524] [2024-06-14 11:19:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:30,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:30,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:30,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:30,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 1123 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:30,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:30,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:30,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:30,987 INFO L124 PetriNetUnfolderBase]: 375/658 cut-off events. [2024-06-14 11:19:30,987 INFO L125 PetriNetUnfolderBase]: For 27877/27877 co-relation queries the response was YES. [2024-06-14 11:19:30,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 658 events. 375/658 cut-off events. For 27877/27877 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2687 event pairs, 66 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4447. Up to 591 conditions per place. [2024-06-14 11:19:30,992 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-14 11:19:30,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 136 transitions, 1465 flow [2024-06-14 11:19:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:30,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:19:30,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 11:19:30,993 INFO L175 Difference]: Start difference. First operand has 141 places, 116 transitions, 1123 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:19:30,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 136 transitions, 1465 flow [2024-06-14 11:19:31,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 1414 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:31,039 INFO L231 Difference]: Finished difference. Result has 143 places, 118 transitions, 1139 flow [2024-06-14 11:19:31,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=143, PETRI_TRANSITIONS=118} [2024-06-14 11:19:31,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-14 11:19:31,039 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 118 transitions, 1139 flow [2024-06-14 11:19:31,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:31,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:31,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:19:31,040 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)] === [2024-06-14 11:19:31,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1481802204, now seen corresponding path program 1 times [2024-06-14 11:19:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:31,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329404069] [2024-06-14 11:19:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329404069] [2024-06-14 11:19:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329404069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:32,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914218759] [2024-06-14 11:19:32,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:32,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:32,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:32,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:32,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 118 transitions, 1139 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:32,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:32,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:32,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:33,154 INFO L124 PetriNetUnfolderBase]: 416/729 cut-off events. [2024-06-14 11:19:33,154 INFO L125 PetriNetUnfolderBase]: For 29014/29014 co-relation queries the response was YES. [2024-06-14 11:19:33,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4969 conditions, 729 events. 416/729 cut-off events. For 29014/29014 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3067 event pairs, 90 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 4896. Up to 637 conditions per place. [2024-06-14 11:19:33,159 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-14 11:19:33,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 154 transitions, 1736 flow [2024-06-14 11:19:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:19:33,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:19:33,161 INFO L175 Difference]: Start difference. First operand has 143 places, 118 transitions, 1139 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:19:33,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 154 transitions, 1736 flow [2024-06-14 11:19:33,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 154 transitions, 1675 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:33,209 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1447 flow [2024-06-14 11:19:33,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1447, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-06-14 11:19:33,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-14 11:19:33,212 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1447 flow [2024-06-14 11:19:33,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:33,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:33,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:33,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:19:33,218 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)] === [2024-06-14 11:19:33,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1356258350, now seen corresponding path program 3 times [2024-06-14 11:19:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30288111] [2024-06-14 11:19:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:34,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30288111] [2024-06-14 11:19:34,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30288111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:34,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:34,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:19:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091171358] [2024-06-14 11:19:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:34,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:19:34,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:19:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:19:34,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:19:34,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1447 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 11:19:34,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:34,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:19:34,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:34,433 INFO L124 PetriNetUnfolderBase]: 403/712 cut-off events. [2024-06-14 11:19:34,434 INFO L125 PetriNetUnfolderBase]: For 29861/29870 co-relation queries the response was YES. [2024-06-14 11:19:34,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4958 conditions, 712 events. 403/712 cut-off events. For 29861/29870 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3025 event pairs, 77 based on Foata normal form. 10/720 useless extension candidates. Maximal degree in co-relation 4879. Up to 595 conditions per place. [2024-06-14 11:19:34,439 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 111 selfloop transitions, 28 changer transitions 0/149 dead transitions. [2024-06-14 11:19:34,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 149 transitions, 1753 flow [2024-06-14 11:19:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:19:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:19:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 11:19:34,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722943722943723 [2024-06-14 11:19:34,440 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1447 flow. Second operand 7 states and 86 transitions. [2024-06-14 11:19:34,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 149 transitions, 1753 flow [2024-06-14 11:19:34,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1705 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-14 11:19:34,494 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 1460 flow [2024-06-14 11:19:34,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1460, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2024-06-14 11:19:34,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-14 11:19:34,494 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 1460 flow [2024-06-14 11:19:34,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 11:19:34,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:34,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:34,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:19:34,495 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)] === [2024-06-14 11:19:34,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1544092728, now seen corresponding path program 2 times [2024-06-14 11:19:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461000027] [2024-06-14 11:19:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:35,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:35,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461000027] [2024-06-14 11:19:35,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461000027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:35,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:35,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:35,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102651940] [2024-06-14 11:19:35,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:35,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:35,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:35,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 1460 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:35,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:35,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:35,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:35,915 INFO L124 PetriNetUnfolderBase]: 463/808 cut-off events. [2024-06-14 11:19:35,915 INFO L125 PetriNetUnfolderBase]: For 32065/32065 co-relation queries the response was YES. [2024-06-14 11:19:35,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 808 events. 463/808 cut-off events. For 32065/32065 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3531 event pairs, 66 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5376. Up to 639 conditions per place. [2024-06-14 11:19:35,921 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 47 changer transitions 0/181 dead transitions. [2024-06-14 11:19:35,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 181 transitions, 2072 flow [2024-06-14 11:19:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:19:35,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-14 11:19:35,922 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 1460 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:19:35,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 181 transitions, 2072 flow [2024-06-14 11:19:35,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 1957 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:35,982 INFO L231 Difference]: Finished difference. Result has 163 places, 159 transitions, 1691 flow [2024-06-14 11:19:35,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=163, PETRI_TRANSITIONS=159} [2024-06-14 11:19:35,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-14 11:19:35,983 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 159 transitions, 1691 flow [2024-06-14 11:19:35,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:35,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:35,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:35,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:19:35,984 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)] === [2024-06-14 11:19:35,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:35,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1246212750, now seen corresponding path program 3 times [2024-06-14 11:19:35,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:35,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291041237] [2024-06-14 11:19:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:35,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291041237] [2024-06-14 11:19:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291041237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:36,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:36,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:36,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595159573] [2024-06-14 11:19:36,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:36,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:36,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:36,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 159 transitions, 1691 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:36,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:36,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:36,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:37,318 INFO L124 PetriNetUnfolderBase]: 469/818 cut-off events. [2024-06-14 11:19:37,319 INFO L125 PetriNetUnfolderBase]: For 33787/33787 co-relation queries the response was YES. [2024-06-14 11:19:37,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5665 conditions, 818 events. 469/818 cut-off events. For 33787/33787 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3569 event pairs, 72 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 5580. Up to 677 conditions per place. [2024-06-14 11:19:37,323 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-14 11:19:37,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 181 transitions, 2149 flow [2024-06-14 11:19:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:19:37,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:19:37,325 INFO L175 Difference]: Start difference. First operand has 163 places, 159 transitions, 1691 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:19:37,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 181 transitions, 2149 flow [2024-06-14 11:19:37,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 181 transitions, 2016 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:37,386 INFO L231 Difference]: Finished difference. Result has 166 places, 161 transitions, 1677 flow [2024-06-14 11:19:37,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2024-06-14 11:19:37,387 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-14 11:19:37,387 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 1677 flow [2024-06-14 11:19:37,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:37,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:37,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:19:37,388 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)] === [2024-06-14 11:19:37,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:37,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1246033012, now seen corresponding path program 2 times [2024-06-14 11:19:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860089665] [2024-06-14 11:19:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:39,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:39,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860089665] [2024-06-14 11:19:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860089665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:39,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:39,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:39,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111100031] [2024-06-14 11:19:39,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:39,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:39,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:39,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:39,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:39,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:39,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:39,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:39,658 INFO L124 PetriNetUnfolderBase]: 482/839 cut-off events. [2024-06-14 11:19:39,658 INFO L125 PetriNetUnfolderBase]: For 36342/36342 co-relation queries the response was YES. [2024-06-14 11:19:39,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 839 events. 482/839 cut-off events. For 36342/36342 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3691 event pairs, 88 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 5719. Up to 734 conditions per place. [2024-06-14 11:19:39,664 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 146 selfloop transitions, 35 changer transitions 0/183 dead transitions. [2024-06-14 11:19:39,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 183 transitions, 2266 flow [2024-06-14 11:19:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:19:39,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:19:39,665 INFO L175 Difference]: Start difference. First operand has 166 places, 161 transitions, 1677 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:19:39,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 183 transitions, 2266 flow [2024-06-14 11:19:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 2170 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:39,743 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1752 flow [2024-06-14 11:19:39,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-06-14 11:19:39,744 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-14 11:19:39,744 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1752 flow [2024-06-14 11:19:39,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:39,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:39,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:19:39,745 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)] === [2024-06-14 11:19:39,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 21423918, now seen corresponding path program 4 times [2024-06-14 11:19:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007473822] [2024-06-14 11:19:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:39,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:40,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007473822] [2024-06-14 11:19:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007473822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:40,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:40,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181394982] [2024-06-14 11:19:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:40,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:41,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:41,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1752 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:41,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:41,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:41,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:41,441 INFO L124 PetriNetUnfolderBase]: 499/867 cut-off events. [2024-06-14 11:19:41,441 INFO L125 PetriNetUnfolderBase]: For 40057/40057 co-relation queries the response was YES. [2024-06-14 11:19:41,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 867 events. 499/867 cut-off events. For 40057/40057 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3856 event pairs, 65 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 5972. Up to 659 conditions per place. [2024-06-14 11:19:41,447 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 57 changer transitions 0/195 dead transitions. [2024-06-14 11:19:41,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 195 transitions, 2392 flow [2024-06-14 11:19:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:19:41,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:41,449 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1752 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:19:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 195 transitions, 2392 flow [2024-06-14 11:19:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 195 transitions, 2305 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:41,523 INFO L231 Difference]: Finished difference. Result has 177 places, 171 transitions, 1891 flow [2024-06-14 11:19:41,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=177, PETRI_TRANSITIONS=171} [2024-06-14 11:19:41,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2024-06-14 11:19:41,524 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 171 transitions, 1891 flow [2024-06-14 11:19:41,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:41,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:41,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:41,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:19:41,525 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)] === [2024-06-14 11:19:41,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash -241606324, now seen corresponding path program 1 times [2024-06-14 11:19:41,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120420865] [2024-06-14 11:19:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:43,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120420865] [2024-06-14 11:19:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120420865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:43,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:43,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273941874] [2024-06-14 11:19:43,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:43,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:43,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 171 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:43,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:43,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:43,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:44,318 INFO L124 PetriNetUnfolderBase]: 500/870 cut-off events. [2024-06-14 11:19:44,318 INFO L125 PetriNetUnfolderBase]: For 41304/41304 co-relation queries the response was YES. [2024-06-14 11:19:44,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 870 events. 500/870 cut-off events. For 41304/41304 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3893 event pairs, 100 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 6119. Up to 778 conditions per place. [2024-06-14 11:19:44,324 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 158 selfloop transitions, 33 changer transitions 0/193 dead transitions. [2024-06-14 11:19:44,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 193 transitions, 2387 flow [2024-06-14 11:19:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:19:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:19:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:19:44,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:19:44,325 INFO L175 Difference]: Start difference. First operand has 177 places, 171 transitions, 1891 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:19:44,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 193 transitions, 2387 flow [2024-06-14 11:19:44,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 193 transitions, 2294 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:44,418 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1942 flow [2024-06-14 11:19:44,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-06-14 11:19:44,418 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-14 11:19:44,419 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1942 flow [2024-06-14 11:19:44,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:44,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:44,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:44,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:19:44,419 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)] === [2024-06-14 11:19:44,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1533988120, now seen corresponding path program 5 times [2024-06-14 11:19:44,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:44,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327304824] [2024-06-14 11:19:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:45,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327304824] [2024-06-14 11:19:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327304824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:45,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338249145] [2024-06-14 11:19:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:45,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:45,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:45,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1942 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:45,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:45,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:45,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:46,315 INFO L124 PetriNetUnfolderBase]: 506/881 cut-off events. [2024-06-14 11:19:46,315 INFO L125 PetriNetUnfolderBase]: For 41777/41777 co-relation queries the response was YES. [2024-06-14 11:19:46,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 881 events. 506/881 cut-off events. For 41777/41777 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3934 event pairs, 71 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6250. Up to 722 conditions per place. [2024-06-14 11:19:46,323 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 146 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-14 11:19:46,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 192 transitions, 2402 flow [2024-06-14 11:19:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:19:46,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 11:19:46,326 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1942 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:19:46,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 192 transitions, 2402 flow [2024-06-14 11:19:46,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 2345 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 11:19:46,419 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 2025 flow [2024-06-14 11:19:46,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2025, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-14 11:19:46,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2024-06-14 11:19:46,420 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 2025 flow [2024-06-14 11:19:46,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:46,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:46,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:19:46,420 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)] === [2024-06-14 11:19:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash -821915364, now seen corresponding path program 6 times [2024-06-14 11:19:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23168162] [2024-06-14 11:19:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:47,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23168162] [2024-06-14 11:19:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23168162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:47,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579254267] [2024-06-14 11:19:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:47,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:47,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:47,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:47,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:47,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 2025 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:47,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:47,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:47,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:47,931 INFO L124 PetriNetUnfolderBase]: 522/907 cut-off events. [2024-06-14 11:19:47,931 INFO L125 PetriNetUnfolderBase]: For 46443/46443 co-relation queries the response was YES. [2024-06-14 11:19:47,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 907 events. 522/907 cut-off events. For 46443/46443 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4073 event pairs, 59 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 6660. Up to 613 conditions per place. [2024-06-14 11:19:47,937 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 118 selfloop transitions, 80 changer transitions 0/200 dead transitions. [2024-06-14 11:19:47,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 2663 flow [2024-06-14 11:19:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:19:47,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:47,941 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 2025 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:19:47,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 2663 flow [2024-06-14 11:19:48,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 200 transitions, 2553 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:48,039 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 2177 flow [2024-06-14 11:19:48,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2177, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2024-06-14 11:19:48,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-14 11:19:48,039 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 2177 flow [2024-06-14 11:19:48,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:48,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:48,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:19:48,040 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)] === [2024-06-14 11:19:48,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash -821921874, now seen corresponding path program 7 times [2024-06-14 11:19:48,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:48,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773394677] [2024-06-14 11:19:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:49,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773394677] [2024-06-14 11:19:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773394677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45743646] [2024-06-14 11:19:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:49,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:49,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:49,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 2177 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:49,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:49,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:49,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:49,805 INFO L124 PetriNetUnfolderBase]: 523/909 cut-off events. [2024-06-14 11:19:49,805 INFO L125 PetriNetUnfolderBase]: For 47743/47743 co-relation queries the response was YES. [2024-06-14 11:19:49,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 909 events. 523/909 cut-off events. For 47743/47743 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4091 event pairs, 77 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6797. Up to 738 conditions per place. [2024-06-14 11:19:49,812 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 153 selfloop transitions, 49 changer transitions 0/204 dead transitions. [2024-06-14 11:19:49,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 204 transitions, 2710 flow [2024-06-14 11:19:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:19:49,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-14 11:19:49,813 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 2177 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:19:49,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 204 transitions, 2710 flow [2024-06-14 11:19:49,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 204 transitions, 2585 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 11:19:49,915 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 2219 flow [2024-06-14 11:19:49,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2219, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2024-06-14 11:19:49,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-14 11:19:49,916 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 2219 flow [2024-06-14 11:19:49,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:49,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:49,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:19:49,916 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)] === [2024-06-14 11:19:49,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -649780552, now seen corresponding path program 2 times [2024-06-14 11:19:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:49,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227329411] [2024-06-14 11:19:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:51,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227329411] [2024-06-14 11:19:51,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227329411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:51,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:51,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:51,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877765360] [2024-06-14 11:19:51,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:51,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:51,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:51,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:51,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 185 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:51,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:51,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:51,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:52,335 INFO L124 PetriNetUnfolderBase]: 529/917 cut-off events. [2024-06-14 11:19:52,335 INFO L125 PetriNetUnfolderBase]: For 48245/48245 co-relation queries the response was YES. [2024-06-14 11:19:52,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6948 conditions, 917 events. 529/917 cut-off events. For 48245/48245 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4159 event pairs, 98 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 6856. Up to 796 conditions per place. [2024-06-14 11:19:52,342 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 41 changer transitions 0/202 dead transitions. [2024-06-14 11:19:52,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 2709 flow [2024-06-14 11:19:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:19:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:19:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:19:52,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:19:52,343 INFO L175 Difference]: Start difference. First operand has 195 places, 185 transitions, 2219 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:19:52,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 2709 flow [2024-06-14 11:19:52,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 202 transitions, 2570 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:52,452 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 2214 flow [2024-06-14 11:19:52,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2214, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2024-06-14 11:19:52,452 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-14 11:19:52,453 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 2214 flow [2024-06-14 11:19:52,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:52,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:52,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:52,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:19:52,454 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)] === [2024-06-14 11:19:52,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1632626636, now seen corresponding path program 8 times [2024-06-14 11:19:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663193846] [2024-06-14 11:19:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663193846] [2024-06-14 11:19:53,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663193846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:53,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:53,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:53,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850098313] [2024-06-14 11:19:53,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:53,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:53,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:53,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 2214 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:53,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:53,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:53,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:53,895 INFO L124 PetriNetUnfolderBase]: 545/947 cut-off events. [2024-06-14 11:19:53,896 INFO L125 PetriNetUnfolderBase]: For 51787/51787 co-relation queries the response was YES. [2024-06-14 11:19:53,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 947 events. 545/947 cut-off events. For 51787/51787 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4301 event pairs, 62 based on Foata normal form. 2/949 useless extension candidates. Maximal degree in co-relation 7109. Up to 677 conditions per place. [2024-06-14 11:19:53,903 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 135 selfloop transitions, 72 changer transitions 0/209 dead transitions. [2024-06-14 11:19:53,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 209 transitions, 2878 flow [2024-06-14 11:19:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 11:19:53,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-14 11:19:53,908 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 2214 flow. Second operand 9 states and 109 transitions. [2024-06-14 11:19:53,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 209 transitions, 2878 flow [2024-06-14 11:19:54,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 209 transitions, 2776 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:19:54,034 INFO L231 Difference]: Finished difference. Result has 199 places, 191 transitions, 2353 flow [2024-06-14 11:19:54,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2353, PETRI_PLACES=199, PETRI_TRANSITIONS=191} [2024-06-14 11:19:54,034 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 11:19:54,034 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 191 transitions, 2353 flow [2024-06-14 11:19:54,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:54,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:54,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:54,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:19:54,035 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)] === [2024-06-14 11:19:54,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -923209824, now seen corresponding path program 9 times [2024-06-14 11:19:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054909103] [2024-06-14 11:19:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054909103] [2024-06-14 11:19:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054909103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:54,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:54,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:54,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593567496] [2024-06-14 11:19:54,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:54,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:54,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:54,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:54,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:54,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 191 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:54,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:54,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:54,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:55,368 INFO L124 PetriNetUnfolderBase]: 551/955 cut-off events. [2024-06-14 11:19:55,369 INFO L125 PetriNetUnfolderBase]: For 54288/54288 co-relation queries the response was YES. [2024-06-14 11:19:55,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 955 events. 551/955 cut-off events. For 54288/54288 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4360 event pairs, 90 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 7332. Up to 812 conditions per place. [2024-06-14 11:19:55,376 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 165 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-06-14 11:19:55,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 2847 flow [2024-06-14 11:19:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:19:55,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 11:19:55,377 INFO L175 Difference]: Start difference. First operand has 199 places, 191 transitions, 2353 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:19:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 2847 flow [2024-06-14 11:19:55,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 206 transitions, 2712 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:55,504 INFO L231 Difference]: Finished difference. Result has 203 places, 193 transitions, 2353 flow [2024-06-14 11:19:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2353, PETRI_PLACES=203, PETRI_TRANSITIONS=193} [2024-06-14 11:19:55,505 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-14 11:19:55,505 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 193 transitions, 2353 flow [2024-06-14 11:19:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:55,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:55,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:19:55,506 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)] === [2024-06-14 11:19:55,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash -923030334, now seen corresponding path program 10 times [2024-06-14 11:19:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386406799] [2024-06-14 11:19:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386406799] [2024-06-14 11:19:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386406799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580917818] [2024-06-14 11:19:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:56,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:56,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 193 transitions, 2353 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:56,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:56,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:56,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:57,141 INFO L124 PetriNetUnfolderBase]: 567/981 cut-off events. [2024-06-14 11:19:57,141 INFO L125 PetriNetUnfolderBase]: For 59245/59245 co-relation queries the response was YES. [2024-06-14 11:19:57,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 981 events. 567/981 cut-off events. For 59245/59245 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4511 event pairs, 86 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 7705. Up to 783 conditions per place. [2024-06-14 11:19:57,149 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 160 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-14 11:19:57,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 214 transitions, 3041 flow [2024-06-14 11:19:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:19:57,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:19:57,150 INFO L175 Difference]: Start difference. First operand has 203 places, 193 transitions, 2353 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:19:57,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 214 transitions, 3041 flow [2024-06-14 11:19:57,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 214 transitions, 2922 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:19:57,280 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 2452 flow [2024-06-14 11:19:57,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2452, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2024-06-14 11:19:57,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 173 predicate places. [2024-06-14 11:19:57,280 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 2452 flow [2024-06-14 11:19:57,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:57,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:57,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:57,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:19:57,281 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)] === [2024-06-14 11:19:57,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash -923030086, now seen corresponding path program 3 times [2024-06-14 11:19:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746825716] [2024-06-14 11:19:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:19:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:19:58,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:19:58,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746825716] [2024-06-14 11:19:58,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746825716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:19:58,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:19:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:19:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144127930] [2024-06-14 11:19:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:19:58,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:19:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:19:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:19:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:19:58,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:19:58,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 2452 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:58,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:19:58,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:19:58,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:19:59,245 INFO L124 PetriNetUnfolderBase]: 565/976 cut-off events. [2024-06-14 11:19:59,246 INFO L125 PetriNetUnfolderBase]: For 59897/59897 co-relation queries the response was YES. [2024-06-14 11:19:59,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 976 events. 565/976 cut-off events. For 59897/59897 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4485 event pairs, 113 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 7676. Up to 884 conditions per place. [2024-06-14 11:19:59,253 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2024-06-14 11:19:59,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 210 transitions, 2951 flow [2024-06-14 11:19:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:19:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:19:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 11:19:59,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265993265993266 [2024-06-14 11:19:59,254 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 2452 flow. Second operand 9 states and 97 transitions. [2024-06-14 11:19:59,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 210 transitions, 2951 flow [2024-06-14 11:19:59,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 2839 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-14 11:19:59,375 INFO L231 Difference]: Finished difference. Result has 209 places, 199 transitions, 2465 flow [2024-06-14 11:19:59,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2465, PETRI_PLACES=209, PETRI_TRANSITIONS=199} [2024-06-14 11:19:59,375 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2024-06-14 11:19:59,375 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 199 transitions, 2465 flow [2024-06-14 11:19:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:19:59,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:19:59,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:19:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:19:59,376 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)] === [2024-06-14 11:19:59,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:19:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash -916780734, now seen corresponding path program 11 times [2024-06-14 11:19:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:19:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871251646] [2024-06-14 11:19:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:19:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:19:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:00,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:00,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871251646] [2024-06-14 11:20:00,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871251646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:00,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:00,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065908716] [2024-06-14 11:20:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:00,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:00,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 199 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:00,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:00,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:00,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:00,883 INFO L124 PetriNetUnfolderBase]: 571/988 cut-off events. [2024-06-14 11:20:00,884 INFO L125 PetriNetUnfolderBase]: For 61696/61696 co-relation queries the response was YES. [2024-06-14 11:20:00,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 988 events. 571/988 cut-off events. For 61696/61696 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4535 event pairs, 91 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7777. Up to 841 conditions per place. [2024-06-14 11:20:00,891 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 171 selfloop transitions, 41 changer transitions 0/214 dead transitions. [2024-06-14 11:20:00,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 214 transitions, 2975 flow [2024-06-14 11:20:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:20:00,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 11:20:00,892 INFO L175 Difference]: Start difference. First operand has 209 places, 199 transitions, 2465 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:20:00,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 214 transitions, 2975 flow [2024-06-14 11:20:01,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 2879 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:01,053 INFO L231 Difference]: Finished difference. Result has 211 places, 201 transitions, 2506 flow [2024-06-14 11:20:01,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2506, PETRI_PLACES=211, PETRI_TRANSITIONS=201} [2024-06-14 11:20:01,053 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-14 11:20:01,053 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 201 transitions, 2506 flow [2024-06-14 11:20:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:01,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:01,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:01,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:20:01,054 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)] === [2024-06-14 11:20:01,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash -93505674, now seen corresponding path program 12 times [2024-06-14 11:20:01,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:01,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908160928] [2024-06-14 11:20:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:01,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908160928] [2024-06-14 11:20:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908160928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:02,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525342926] [2024-06-14 11:20:02,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:02,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:02,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 201 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:02,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:02,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:02,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:02,744 INFO L124 PetriNetUnfolderBase]: 567/982 cut-off events. [2024-06-14 11:20:02,744 INFO L125 PetriNetUnfolderBase]: For 60999/60999 co-relation queries the response was YES. [2024-06-14 11:20:02,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7772 conditions, 982 events. 567/982 cut-off events. For 60999/60999 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4525 event pairs, 88 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7674. Up to 810 conditions per place. [2024-06-14 11:20:02,752 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 166 selfloop transitions, 48 changer transitions 0/216 dead transitions. [2024-06-14 11:20:02,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 216 transitions, 2982 flow [2024-06-14 11:20:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:20:02,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:20:02,753 INFO L175 Difference]: Start difference. First operand has 211 places, 201 transitions, 2506 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:20:02,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 216 transitions, 2982 flow [2024-06-14 11:20:02,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 2835 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:02,894 INFO L231 Difference]: Finished difference. Result has 213 places, 201 transitions, 2463 flow [2024-06-14 11:20:02,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2463, PETRI_PLACES=213, PETRI_TRANSITIONS=201} [2024-06-14 11:20:02,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-14 11:20:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 201 transitions, 2463 flow [2024-06-14 11:20:02,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:02,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:02,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:02,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:20:02,895 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)] === [2024-06-14 11:20:02,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1555199516, now seen corresponding path program 13 times [2024-06-14 11:20:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106576018] [2024-06-14 11:20:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:03,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:03,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106576018] [2024-06-14 11:20:03,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106576018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:03,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:03,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:03,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959951301] [2024-06-14 11:20:03,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:03,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:03,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:03,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:03,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 201 transitions, 2463 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:03,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:03,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:03,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:04,368 INFO L124 PetriNetUnfolderBase]: 563/976 cut-off events. [2024-06-14 11:20:04,368 INFO L125 PetriNetUnfolderBase]: For 59668/59668 co-relation queries the response was YES. [2024-06-14 11:20:04,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 976 events. 563/976 cut-off events. For 59668/59668 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4494 event pairs, 72 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 7496. Up to 556 conditions per place. [2024-06-14 11:20:04,376 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 124 selfloop transitions, 94 changer transitions 0/220 dead transitions. [2024-06-14 11:20:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 220 transitions, 3233 flow [2024-06-14 11:20:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 11:20:04,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-14 11:20:04,380 INFO L175 Difference]: Start difference. First operand has 213 places, 201 transitions, 2463 flow. Second operand 9 states and 109 transitions. [2024-06-14 11:20:04,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 220 transitions, 3233 flow [2024-06-14 11:20:04,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 220 transitions, 3082 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:04,535 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 2575 flow [2024-06-14 11:20:04,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2575, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2024-06-14 11:20:04,536 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-14 11:20:04,536 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 2575 flow [2024-06-14 11:20:04,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:04,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:04,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:04,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:20:04,537 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)] === [2024-06-14 11:20:04,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1732143906, now seen corresponding path program 3 times [2024-06-14 11:20:04,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:04,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724479489] [2024-06-14 11:20:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:04,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:06,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724479489] [2024-06-14 11:20:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724479489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:06,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:06,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562847296] [2024-06-14 11:20:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:06,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:06,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:06,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 2575 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:06,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:06,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:06,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:07,701 INFO L124 PetriNetUnfolderBase]: 569/984 cut-off events. [2024-06-14 11:20:07,701 INFO L125 PetriNetUnfolderBase]: For 61385/61385 co-relation queries the response was YES. [2024-06-14 11:20:07,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7777 conditions, 984 events. 569/984 cut-off events. For 61385/61385 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4550 event pairs, 113 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 7676. Up to 893 conditions per place. [2024-06-14 11:20:07,709 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 186 selfloop transitions, 30 changer transitions 0/218 dead transitions. [2024-06-14 11:20:07,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 218 transitions, 3097 flow [2024-06-14 11:20:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 11:20:07,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 11:20:07,710 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 2575 flow. Second operand 10 states and 105 transitions. [2024-06-14 11:20:07,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 218 transitions, 3097 flow [2024-06-14 11:20:07,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 218 transitions, 2900 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:07,856 INFO L231 Difference]: Finished difference. Result has 218 places, 205 transitions, 2493 flow [2024-06-14 11:20:07,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2493, PETRI_PLACES=218, PETRI_TRANSITIONS=205} [2024-06-14 11:20:07,856 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-14 11:20:07,857 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 205 transitions, 2493 flow [2024-06-14 11:20:07,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:07,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:07,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:07,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:20:07,857 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)] === [2024-06-14 11:20:07,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1554953438, now seen corresponding path program 4 times [2024-06-14 11:20:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:07,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276841048] [2024-06-14 11:20:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276841048] [2024-06-14 11:20:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276841048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:09,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:09,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561089614] [2024-06-14 11:20:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:09,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:09,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 205 transitions, 2493 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:09,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:09,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:09,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:09,468 INFO L124 PetriNetUnfolderBase]: 570/986 cut-off events. [2024-06-14 11:20:09,469 INFO L125 PetriNetUnfolderBase]: For 61512/61512 co-relation queries the response was YES. [2024-06-14 11:20:09,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 986 events. 570/986 cut-off events. For 61512/61512 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4595 event pairs, 97 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 7498. Up to 865 conditions per place. [2024-06-14 11:20:09,476 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 177 selfloop transitions, 42 changer transitions 0/221 dead transitions. [2024-06-14 11:20:09,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 3031 flow [2024-06-14 11:20:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:20:09,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:20:09,477 INFO L175 Difference]: Start difference. First operand has 218 places, 205 transitions, 2493 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:20:09,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 3031 flow [2024-06-14 11:20:09,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 221 transitions, 2938 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:09,630 INFO L231 Difference]: Finished difference. Result has 220 places, 207 transitions, 2543 flow [2024-06-14 11:20:09,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2543, PETRI_PLACES=220, PETRI_TRANSITIONS=207} [2024-06-14 11:20:09,630 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-14 11:20:09,631 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 207 transitions, 2543 flow [2024-06-14 11:20:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:09,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:09,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:20:09,631 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)] === [2024-06-14 11:20:09,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1259734238, now seen corresponding path program 5 times [2024-06-14 11:20:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:09,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580701849] [2024-06-14 11:20:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:10,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580701849] [2024-06-14 11:20:10,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580701849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:10,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:10,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:10,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731352047] [2024-06-14 11:20:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:11,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:11,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:11,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 207 transitions, 2543 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:11,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:11,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:11,534 INFO L124 PetriNetUnfolderBase]: 566/982 cut-off events. [2024-06-14 11:20:11,534 INFO L125 PetriNetUnfolderBase]: For 58975/58975 co-relation queries the response was YES. [2024-06-14 11:20:11,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 982 events. 566/982 cut-off events. For 58975/58975 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4564 event pairs, 183 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7383. Up to 934 conditions per place. [2024-06-14 11:20:11,544 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 197 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2024-06-14 11:20:11,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 219 transitions, 3011 flow [2024-06-14 11:20:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 11:20:11,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2975206611570248 [2024-06-14 11:20:11,545 INFO L175 Difference]: Start difference. First operand has 220 places, 207 transitions, 2543 flow. Second operand 11 states and 108 transitions. [2024-06-14 11:20:11,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 219 transitions, 3011 flow [2024-06-14 11:20:11,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 219 transitions, 2882 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:11,688 INFO L231 Difference]: Finished difference. Result has 223 places, 207 transitions, 2459 flow [2024-06-14 11:20:11,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2459, PETRI_PLACES=223, PETRI_TRANSITIONS=207} [2024-06-14 11:20:11,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2024-06-14 11:20:11,688 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 207 transitions, 2459 flow [2024-06-14 11:20:11,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:11,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:11,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:11,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:20:11,689 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)] === [2024-06-14 11:20:11,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:11,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1502464224, now seen corresponding path program 14 times [2024-06-14 11:20:11,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:11,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463681499] [2024-06-14 11:20:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:11,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:12,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463681499] [2024-06-14 11:20:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463681499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:12,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:12,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:12,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150357396] [2024-06-14 11:20:12,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:12,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:12,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:12,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:12,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 207 transitions, 2459 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:12,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:12,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:12,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:13,238 INFO L124 PetriNetUnfolderBase]: 562/976 cut-off events. [2024-06-14 11:20:13,239 INFO L125 PetriNetUnfolderBase]: For 57036/57036 co-relation queries the response was YES. [2024-06-14 11:20:13,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 976 events. 562/976 cut-off events. For 57036/57036 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4515 event pairs, 182 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 7150. Up to 942 conditions per place. [2024-06-14 11:20:13,247 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-14 11:20:13,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 217 transitions, 2917 flow [2024-06-14 11:20:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 11:20:13,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3063973063973064 [2024-06-14 11:20:13,249 INFO L175 Difference]: Start difference. First operand has 223 places, 207 transitions, 2459 flow. Second operand 9 states and 91 transitions. [2024-06-14 11:20:13,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 217 transitions, 2917 flow [2024-06-14 11:20:13,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 217 transitions, 2832 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-14 11:20:13,422 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 2409 flow [2024-06-14 11:20:13,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2024-06-14 11:20:13,423 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-14 11:20:13,423 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 2409 flow [2024-06-14 11:20:13,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:13,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:13,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:13,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:20:13,424 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)] === [2024-06-14 11:20:13,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1269853568, now seen corresponding path program 6 times [2024-06-14 11:20:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404980829] [2024-06-14 11:20:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404980829] [2024-06-14 11:20:14,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404980829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:14,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:14,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564033492] [2024-06-14 11:20:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:14,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:14,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:14,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:14,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:14,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:14,898 INFO L124 PetriNetUnfolderBase]: 558/970 cut-off events. [2024-06-14 11:20:14,898 INFO L125 PetriNetUnfolderBase]: For 54876/54876 co-relation queries the response was YES. [2024-06-14 11:20:14,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 970 events. 558/970 cut-off events. For 54876/54876 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4507 event pairs, 177 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 6956. Up to 900 conditions per place. [2024-06-14 11:20:14,906 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 194 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-14 11:20:14,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 220 transitions, 2889 flow [2024-06-14 11:20:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:20:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-14 11:20:14,907 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 2409 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:20:14,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 220 transitions, 2889 flow [2024-06-14 11:20:15,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 220 transitions, 2842 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:15,049 INFO L231 Difference]: Finished difference. Result has 224 places, 207 transitions, 2415 flow [2024-06-14 11:20:15,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=224, PETRI_TRANSITIONS=207} [2024-06-14 11:20:15,049 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-14 11:20:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 207 transitions, 2415 flow [2024-06-14 11:20:15,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:15,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:15,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:15,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:20:15,050 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)] === [2024-06-14 11:20:15,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash -521375733, now seen corresponding path program 1 times [2024-06-14 11:20:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:15,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988502056] [2024-06-14 11:20:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:15,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988502056] [2024-06-14 11:20:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988502056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:16,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603277316] [2024-06-14 11:20:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:16,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:16,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:16,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 207 transitions, 2415 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:16,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:16,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:16,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:16,599 INFO L124 PetriNetUnfolderBase]: 592/1036 cut-off events. [2024-06-14 11:20:16,600 INFO L125 PetriNetUnfolderBase]: For 57266/57266 co-relation queries the response was YES. [2024-06-14 11:20:16,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1036 events. 592/1036 cut-off events. For 57266/57266 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4970 event pairs, 112 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7282. Up to 900 conditions per place. [2024-06-14 11:20:16,607 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 202 selfloop transitions, 36 changer transitions 0/240 dead transitions. [2024-06-14 11:20:16,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 240 transitions, 3051 flow [2024-06-14 11:20:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:20:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:20:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:20:16,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 11:20:16,608 INFO L175 Difference]: Start difference. First operand has 224 places, 207 transitions, 2415 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:20:16,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 240 transitions, 3051 flow [2024-06-14 11:20:16,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 240 transitions, 2987 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:16,740 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 2540 flow [2024-06-14 11:20:16,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2540, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2024-06-14 11:20:16,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 197 predicate places. [2024-06-14 11:20:16,741 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 2540 flow [2024-06-14 11:20:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:16,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:16,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:16,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:20:16,741 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)] === [2024-06-14 11:20:16,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash 254414457, now seen corresponding path program 2 times [2024-06-14 11:20:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45098878] [2024-06-14 11:20:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:17,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45098878] [2024-06-14 11:20:17,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45098878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:17,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:17,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:17,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286889689] [2024-06-14 11:20:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:17,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:17,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:17,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 2540 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:17,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:17,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:17,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:18,388 INFO L124 PetriNetUnfolderBase]: 605/1059 cut-off events. [2024-06-14 11:20:18,388 INFO L125 PetriNetUnfolderBase]: For 58749/58749 co-relation queries the response was YES. [2024-06-14 11:20:18,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7614 conditions, 1059 events. 605/1059 cut-off events. For 58749/58749 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5119 event pairs, 124 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7505. Up to 938 conditions per place. [2024-06-14 11:20:18,400 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 203 selfloop transitions, 37 changer transitions 0/242 dead transitions. [2024-06-14 11:20:18,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 242 transitions, 3142 flow [2024-06-14 11:20:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:20:18,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:20:18,402 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 2540 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:20:18,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 242 transitions, 3142 flow [2024-06-14 11:20:18,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 3065 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:18,551 INFO L231 Difference]: Finished difference. Result has 235 places, 222 transitions, 2624 flow [2024-06-14 11:20:18,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2624, PETRI_PLACES=235, PETRI_TRANSITIONS=222} [2024-06-14 11:20:18,552 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-14 11:20:18,552 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 222 transitions, 2624 flow [2024-06-14 11:20:18,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:18,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:18,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:18,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:20:18,552 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)] === [2024-06-14 11:20:18,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 254295417, now seen corresponding path program 3 times [2024-06-14 11:20:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981278319] [2024-06-14 11:20:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:19,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:19,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981278319] [2024-06-14 11:20:19,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981278319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:19,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:19,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:19,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657681285] [2024-06-14 11:20:19,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:19,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:19,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:19,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:19,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:19,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 222 transitions, 2624 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:19,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:19,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:20,221 INFO L124 PetriNetUnfolderBase]: 609/1067 cut-off events. [2024-06-14 11:20:20,221 INFO L125 PetriNetUnfolderBase]: For 61177/61177 co-relation queries the response was YES. [2024-06-14 11:20:20,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7711 conditions, 1067 events. 609/1067 cut-off events. For 61177/61177 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5164 event pairs, 128 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7600. Up to 949 conditions per place. [2024-06-14 11:20:20,228 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 207 selfloop transitions, 34 changer transitions 0/243 dead transitions. [2024-06-14 11:20:20,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 243 transitions, 3180 flow [2024-06-14 11:20:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:20:20,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:20:20,229 INFO L175 Difference]: Start difference. First operand has 235 places, 222 transitions, 2624 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:20:20,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 243 transitions, 3180 flow [2024-06-14 11:20:20,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 243 transitions, 3099 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:20,396 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2637 flow [2024-06-14 11:20:20,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2637, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-14 11:20:20,396 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-14 11:20:20,396 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2637 flow [2024-06-14 11:20:20,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:20,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:20,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:20,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:20:20,397 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)] === [2024-06-14 11:20:20,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash 811857211, now seen corresponding path program 4 times [2024-06-14 11:20:20,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:20,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781707004] [2024-06-14 11:20:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:20,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781707004] [2024-06-14 11:20:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781707004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:21,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:20:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199523204] [2024-06-14 11:20:21,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:21,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:20:21,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:21,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:20:21,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:20:21,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:20:21,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2637 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) [2024-06-14 11:20:21,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:21,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:20:21,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:21,583 INFO L124 PetriNetUnfolderBase]: 612/1082 cut-off events. [2024-06-14 11:20:21,584 INFO L125 PetriNetUnfolderBase]: For 63533/63538 co-relation queries the response was YES. [2024-06-14 11:20:21,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1082 events. 612/1082 cut-off events. For 63533/63538 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5384 event pairs, 91 based on Foata normal form. 6/1086 useless extension candidates. Maximal degree in co-relation 7647. Up to 883 conditions per place. [2024-06-14 11:20:21,594 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 196 selfloop transitions, 37 changer transitions 0/243 dead transitions. [2024-06-14 11:20:21,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 243 transitions, 3179 flow [2024-06-14 11:20:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:20:21,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:20:21,595 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2637 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:20:21,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 243 transitions, 3179 flow [2024-06-14 11:20:21,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 243 transitions, 3098 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:21,771 INFO L231 Difference]: Finished difference. Result has 241 places, 226 transitions, 2674 flow [2024-06-14 11:20:21,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2674, PETRI_PLACES=241, PETRI_TRANSITIONS=226} [2024-06-14 11:20:21,771 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-14 11:20:21,771 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 226 transitions, 2674 flow [2024-06-14 11:20:21,771 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) [2024-06-14 11:20:21,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:21,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:21,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:20:21,772 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)] === [2024-06-14 11:20:21,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -769848967, now seen corresponding path program 5 times [2024-06-14 11:20:21,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:21,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562606024] [2024-06-14 11:20:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:22,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562606024] [2024-06-14 11:20:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562606024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:22,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:22,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237136184] [2024-06-14 11:20:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:22,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:22,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 226 transitions, 2674 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:22,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:22,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:22,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:23,351 INFO L124 PetriNetUnfolderBase]: 626/1102 cut-off events. [2024-06-14 11:20:23,351 INFO L125 PetriNetUnfolderBase]: For 65078/65078 co-relation queries the response was YES. [2024-06-14 11:20:23,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 1102 events. 626/1102 cut-off events. For 65078/65078 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5445 event pairs, 106 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7817. Up to 999 conditions per place. [2024-06-14 11:20:23,364 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 215 selfloop transitions, 29 changer transitions 0/246 dead transitions. [2024-06-14 11:20:23,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 246 transitions, 3242 flow [2024-06-14 11:20:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:20:23,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:20:23,365 INFO L175 Difference]: Start difference. First operand has 241 places, 226 transitions, 2674 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:20:23,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 246 transitions, 3242 flow [2024-06-14 11:20:23,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 3156 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 11:20:23,573 INFO L231 Difference]: Finished difference. Result has 245 places, 227 transitions, 2677 flow [2024-06-14 11:20:23,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2677, PETRI_PLACES=245, PETRI_TRANSITIONS=227} [2024-06-14 11:20:23,574 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-14 11:20:23,574 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 227 transitions, 2677 flow [2024-06-14 11:20:23,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:23,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:23,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:23,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:20:23,575 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)] === [2024-06-14 11:20:23,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:23,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1620575625, now seen corresponding path program 1 times [2024-06-14 11:20:23,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:23,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656944245] [2024-06-14 11:20:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656944245] [2024-06-14 11:20:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656944245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:25,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:25,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715975799] [2024-06-14 11:20:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:25,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:25,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:25,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 227 transitions, 2677 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:25,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:25,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:25,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:25,770 INFO L124 PetriNetUnfolderBase]: 638/1122 cut-off events. [2024-06-14 11:20:25,770 INFO L125 PetriNetUnfolderBase]: For 67832/67832 co-relation queries the response was YES. [2024-06-14 11:20:25,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8047 conditions, 1122 events. 638/1122 cut-off events. For 67832/67832 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5571 event pairs, 131 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7933. Up to 1005 conditions per place. [2024-06-14 11:20:25,782 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 217 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-06-14 11:20:25,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 3313 flow [2024-06-14 11:20:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:20:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:20:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 11:20:25,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 11:20:25,784 INFO L175 Difference]: Start difference. First operand has 245 places, 227 transitions, 2677 flow. Second operand 12 states and 128 transitions. [2024-06-14 11:20:25,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 3313 flow [2024-06-14 11:20:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 253 transitions, 3181 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:25,991 INFO L231 Difference]: Finished difference. Result has 249 places, 232 transitions, 2703 flow [2024-06-14 11:20:25,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2703, PETRI_PLACES=249, PETRI_TRANSITIONS=232} [2024-06-14 11:20:25,992 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2024-06-14 11:20:25,992 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 232 transitions, 2703 flow [2024-06-14 11:20:25,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:25,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:25,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:25,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:20:25,993 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)] === [2024-06-14 11:20:25,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash 891257418, now seen corresponding path program 1 times [2024-06-14 11:20:25,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:25,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462870214] [2024-06-14 11:20:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:27,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:27,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462870214] [2024-06-14 11:20:27,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462870214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:27,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:27,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:27,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465130934] [2024-06-14 11:20:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:27,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:27,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:27,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 232 transitions, 2703 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:27,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:27,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:27,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:27,962 INFO L124 PetriNetUnfolderBase]: 641/1127 cut-off events. [2024-06-14 11:20:27,963 INFO L125 PetriNetUnfolderBase]: For 66211/66211 co-relation queries the response was YES. [2024-06-14 11:20:27,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1127 events. 641/1127 cut-off events. For 66211/66211 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5567 event pairs, 129 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 7991. Up to 1009 conditions per place. [2024-06-14 11:20:27,978 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 37 changer transitions 0/253 dead transitions. [2024-06-14 11:20:27,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 3303 flow [2024-06-14 11:20:27,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:20:27,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-14 11:20:27,979 INFO L175 Difference]: Start difference. First operand has 249 places, 232 transitions, 2703 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:20:27,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 3303 flow [2024-06-14 11:20:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 253 transitions, 3196 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:28,220 INFO L231 Difference]: Finished difference. Result has 253 places, 234 transitions, 2726 flow [2024-06-14 11:20:28,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2726, PETRI_PLACES=253, PETRI_TRANSITIONS=234} [2024-06-14 11:20:28,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2024-06-14 11:20:28,220 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 234 transitions, 2726 flow [2024-06-14 11:20:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:28,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:28,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:20:28,221 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)] === [2024-06-14 11:20:28,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash -962236473, now seen corresponding path program 6 times [2024-06-14 11:20:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315633575] [2024-06-14 11:20:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315633575] [2024-06-14 11:20:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315633575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:29,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28809996] [2024-06-14 11:20:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:29,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:29,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:29,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 234 transitions, 2726 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:29,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:29,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:29,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:29,839 INFO L124 PetriNetUnfolderBase]: 649/1143 cut-off events. [2024-06-14 11:20:29,839 INFO L125 PetriNetUnfolderBase]: For 71026/71026 co-relation queries the response was YES. [2024-06-14 11:20:29,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8189 conditions, 1143 events. 649/1143 cut-off events. For 71026/71026 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5714 event pairs, 104 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 8073. Up to 1043 conditions per place. [2024-06-14 11:20:29,851 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 227 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-14 11:20:29,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 255 transitions, 3320 flow [2024-06-14 11:20:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:20:29,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:20:29,853 INFO L175 Difference]: Start difference. First operand has 253 places, 234 transitions, 2726 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:20:29,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 255 transitions, 3320 flow [2024-06-14 11:20:30,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 255 transitions, 3224 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:30,116 INFO L231 Difference]: Finished difference. Result has 255 places, 236 transitions, 2727 flow [2024-06-14 11:20:30,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2727, PETRI_PLACES=255, PETRI_TRANSITIONS=236} [2024-06-14 11:20:30,117 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-14 11:20:30,117 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 236 transitions, 2727 flow [2024-06-14 11:20:30,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:30,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:30,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:20:30,117 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)] === [2024-06-14 11:20:30,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash -964110423, now seen corresponding path program 7 times [2024-06-14 11:20:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183693184] [2024-06-14 11:20:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183693184] [2024-06-14 11:20:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183693184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:31,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:31,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276070644] [2024-06-14 11:20:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:31,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:31,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:31,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:31,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 236 transitions, 2727 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:31,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:31,627 INFO L124 PetriNetUnfolderBase]: 662/1170 cut-off events. [2024-06-14 11:20:31,627 INFO L125 PetriNetUnfolderBase]: For 73867/73867 co-relation queries the response was YES. [2024-06-14 11:20:31,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 1170 events. 662/1170 cut-off events. For 73867/73867 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5919 event pairs, 102 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 8198. Up to 1052 conditions per place. [2024-06-14 11:20:31,637 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 231 selfloop transitions, 28 changer transitions 0/261 dead transitions. [2024-06-14 11:20:31,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 261 transitions, 3350 flow [2024-06-14 11:20:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:20:31,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-14 11:20:31,638 INFO L175 Difference]: Start difference. First operand has 255 places, 236 transitions, 2727 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:20:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 261 transitions, 3350 flow [2024-06-14 11:20:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 261 transitions, 3277 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:31,918 INFO L231 Difference]: Finished difference. Result has 261 places, 239 transitions, 2770 flow [2024-06-14 11:20:31,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2770, PETRI_PLACES=261, PETRI_TRANSITIONS=239} [2024-06-14 11:20:31,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-14 11:20:31,919 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 239 transitions, 2770 flow [2024-06-14 11:20:31,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:31,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:31,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:31,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:20:31,920 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)] === [2024-06-14 11:20:31,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -875390841, now seen corresponding path program 2 times [2024-06-14 11:20:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:31,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373402302] [2024-06-14 11:20:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:33,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373402302] [2024-06-14 11:20:33,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373402302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:33,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:33,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241283638] [2024-06-14 11:20:33,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:33,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:33,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:33,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:33,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 239 transitions, 2770 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:33,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:33,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:33,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:34,135 INFO L124 PetriNetUnfolderBase]: 668/1180 cut-off events. [2024-06-14 11:20:34,136 INFO L125 PetriNetUnfolderBase]: For 76056/76056 co-relation queries the response was YES. [2024-06-14 11:20:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 1180 events. 668/1180 cut-off events. For 76056/76056 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5973 event pairs, 108 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 8314. Up to 1075 conditions per place. [2024-06-14 11:20:34,144 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 231 selfloop transitions, 29 changer transitions 0/262 dead transitions. [2024-06-14 11:20:34,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 262 transitions, 3410 flow [2024-06-14 11:20:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:20:34,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:20:34,145 INFO L175 Difference]: Start difference. First operand has 261 places, 239 transitions, 2770 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:20:34,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 262 transitions, 3410 flow [2024-06-14 11:20:34,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 262 transitions, 3331 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:34,439 INFO L231 Difference]: Finished difference. Result has 266 places, 242 transitions, 2824 flow [2024-06-14 11:20:34,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2824, PETRI_PLACES=266, PETRI_TRANSITIONS=242} [2024-06-14 11:20:34,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 234 predicate places. [2024-06-14 11:20:34,440 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 242 transitions, 2824 flow [2024-06-14 11:20:34,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:34,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:34,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:34,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:20:34,440 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)] === [2024-06-14 11:20:34,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:34,441 INFO L85 PathProgramCache]: Analyzing trace with hash -875540788, now seen corresponding path program 2 times [2024-06-14 11:20:34,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:34,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272399350] [2024-06-14 11:20:34,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:34,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272399350] [2024-06-14 11:20:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272399350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:35,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:35,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867324232] [2024-06-14 11:20:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:35,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:35,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 242 transitions, 2824 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:35,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:35,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:36,123 INFO L124 PetriNetUnfolderBase]: 666/1177 cut-off events. [2024-06-14 11:20:36,123 INFO L125 PetriNetUnfolderBase]: For 72882/72882 co-relation queries the response was YES. [2024-06-14 11:20:36,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 1177 events. 666/1177 cut-off events. For 72882/72882 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5971 event pairs, 108 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 8233. Up to 1071 conditions per place. [2024-06-14 11:20:36,134 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 32 changer transitions 0/260 dead transitions. [2024-06-14 11:20:36,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 260 transitions, 3394 flow [2024-06-14 11:20:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:20:36,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:20:36,135 INFO L175 Difference]: Start difference. First operand has 266 places, 242 transitions, 2824 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:20:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 260 transitions, 3394 flow [2024-06-14 11:20:36,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 260 transitions, 3276 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:36,458 INFO L231 Difference]: Finished difference. Result has 269 places, 242 transitions, 2778 flow [2024-06-14 11:20:36,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2778, PETRI_PLACES=269, PETRI_TRANSITIONS=242} [2024-06-14 11:20:36,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-14 11:20:36,458 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 242 transitions, 2778 flow [2024-06-14 11:20:36,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:36,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:36,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:36,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:20:36,459 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)] === [2024-06-14 11:20:36,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1596481969, now seen corresponding path program 8 times [2024-06-14 11:20:36,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:36,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955129874] [2024-06-14 11:20:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:36,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:37,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:37,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955129874] [2024-06-14 11:20:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955129874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:37,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922904013] [2024-06-14 11:20:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:37,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:37,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 242 transitions, 2778 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:37,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:37,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:37,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:38,088 INFO L124 PetriNetUnfolderBase]: 670/1185 cut-off events. [2024-06-14 11:20:38,088 INFO L125 PetriNetUnfolderBase]: For 77410/77410 co-relation queries the response was YES. [2024-06-14 11:20:38,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1185 events. 670/1185 cut-off events. For 77410/77410 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6032 event pairs, 103 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 8264. Up to 1026 conditions per place. [2024-06-14 11:20:38,099 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-06-14 11:20:38,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 260 transitions, 3372 flow [2024-06-14 11:20:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:20:38,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:20:38,100 INFO L175 Difference]: Start difference. First operand has 269 places, 242 transitions, 2778 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:20:38,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 260 transitions, 3372 flow [2024-06-14 11:20:38,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 260 transitions, 3298 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:38,392 INFO L231 Difference]: Finished difference. Result has 271 places, 243 transitions, 2830 flow [2024-06-14 11:20:38,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2830, PETRI_PLACES=271, PETRI_TRANSITIONS=243} [2024-06-14 11:20:38,392 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-14 11:20:38,393 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 243 transitions, 2830 flow [2024-06-14 11:20:38,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:38,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:38,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:20:38,393 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)] === [2024-06-14 11:20:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1596485689, now seen corresponding path program 9 times [2024-06-14 11:20:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573819909] [2024-06-14 11:20:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573819909] [2024-06-14 11:20:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573819909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:39,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:39,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252612838] [2024-06-14 11:20:39,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:39,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:39,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:39,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 243 transitions, 2830 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:39,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:39,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:39,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:39,941 INFO L124 PetriNetUnfolderBase]: 678/1201 cut-off events. [2024-06-14 11:20:39,941 INFO L125 PetriNetUnfolderBase]: For 80118/80118 co-relation queries the response was YES. [2024-06-14 11:20:39,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 1201 events. 678/1201 cut-off events. For 80118/80118 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6143 event pairs, 101 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 8420. Up to 1042 conditions per place. [2024-06-14 11:20:39,952 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 216 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2024-06-14 11:20:39,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 262 transitions, 3431 flow [2024-06-14 11:20:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:20:39,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:20:39,953 INFO L175 Difference]: Start difference. First operand has 271 places, 243 transitions, 2830 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:20:39,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 262 transitions, 3431 flow [2024-06-14 11:20:40,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 262 transitions, 3305 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:40,262 INFO L231 Difference]: Finished difference. Result has 274 places, 245 transitions, 2837 flow [2024-06-14 11:20:40,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2837, PETRI_PLACES=274, PETRI_TRANSITIONS=245} [2024-06-14 11:20:40,262 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-14 11:20:40,263 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 245 transitions, 2837 flow [2024-06-14 11:20:40,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:40,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:40,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:40,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:20:40,263 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)] === [2024-06-14 11:20:40,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1590975439, now seen corresponding path program 10 times [2024-06-14 11:20:40,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:40,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022242486] [2024-06-14 11:20:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:40,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022242486] [2024-06-14 11:20:41,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022242486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:41,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596826069] [2024-06-14 11:20:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:41,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:41,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 245 transitions, 2837 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:41,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:41,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:41,739 INFO L124 PetriNetUnfolderBase]: 682/1209 cut-off events. [2024-06-14 11:20:41,739 INFO L125 PetriNetUnfolderBase]: For 80265/80265 co-relation queries the response was YES. [2024-06-14 11:20:41,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 1209 events. 682/1209 cut-off events. For 80265/80265 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6201 event pairs, 95 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8438. Up to 1011 conditions per place. [2024-06-14 11:20:41,750 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 205 selfloop transitions, 58 changer transitions 0/265 dead transitions. [2024-06-14 11:20:41,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 265 transitions, 3455 flow [2024-06-14 11:20:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:20:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:20:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:20:41,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:20:41,751 INFO L175 Difference]: Start difference. First operand has 274 places, 245 transitions, 2837 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:20:41,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 265 transitions, 3455 flow [2024-06-14 11:20:42,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 265 transitions, 3334 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:42,049 INFO L231 Difference]: Finished difference. Result has 276 places, 246 transitions, 2872 flow [2024-06-14 11:20:42,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2872, PETRI_PLACES=276, PETRI_TRANSITIONS=246} [2024-06-14 11:20:42,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 244 predicate places. [2024-06-14 11:20:42,050 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 246 transitions, 2872 flow [2024-06-14 11:20:42,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:42,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:42,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:42,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:20:42,051 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)] === [2024-06-14 11:20:42,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash 663940545, now seen corresponding path program 3 times [2024-06-14 11:20:42,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85932123] [2024-06-14 11:20:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:42,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85932123] [2024-06-14 11:20:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85932123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:43,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:43,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505693494] [2024-06-14 11:20:43,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:43,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:43,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:43,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:43,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 246 transitions, 2872 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:43,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:43,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:43,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:44,397 INFO L124 PetriNetUnfolderBase]: 688/1219 cut-off events. [2024-06-14 11:20:44,397 INFO L125 PetriNetUnfolderBase]: For 82413/82413 co-relation queries the response was YES. [2024-06-14 11:20:44,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1219 events. 688/1219 cut-off events. For 82413/82413 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6259 event pairs, 95 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 8543. Up to 1011 conditions per place. [2024-06-14 11:20:44,407 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 206 selfloop transitions, 61 changer transitions 0/269 dead transitions. [2024-06-14 11:20:44,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 269 transitions, 3530 flow [2024-06-14 11:20:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:20:44,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:20:44,408 INFO L175 Difference]: Start difference. First operand has 276 places, 246 transitions, 2872 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:20:44,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 269 transitions, 3530 flow [2024-06-14 11:20:44,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 269 transitions, 3384 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:44,769 INFO L231 Difference]: Finished difference. Result has 279 places, 248 transitions, 2915 flow [2024-06-14 11:20:44,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2915, PETRI_PLACES=279, PETRI_TRANSITIONS=248} [2024-06-14 11:20:44,769 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-14 11:20:44,769 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 248 transitions, 2915 flow [2024-06-14 11:20:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:44,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:44,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:44,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:20:44,770 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)] === [2024-06-14 11:20:44,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 658578165, now seen corresponding path program 4 times [2024-06-14 11:20:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:44,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601976690] [2024-06-14 11:20:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:46,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601976690] [2024-06-14 11:20:46,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601976690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:46,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540138048] [2024-06-14 11:20:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:46,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:46,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:46,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 248 transitions, 2915 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:46,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:46,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:46,897 INFO L124 PetriNetUnfolderBase]: 694/1229 cut-off events. [2024-06-14 11:20:46,897 INFO L125 PetriNetUnfolderBase]: For 84417/84417 co-relation queries the response was YES. [2024-06-14 11:20:46,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8777 conditions, 1229 events. 694/1229 cut-off events. For 84417/84417 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6317 event pairs, 105 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 8650. Up to 1060 conditions per place. [2024-06-14 11:20:46,909 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 219 selfloop transitions, 48 changer transitions 0/269 dead transitions. [2024-06-14 11:20:46,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 269 transitions, 3567 flow [2024-06-14 11:20:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:20:46,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:20:46,910 INFO L175 Difference]: Start difference. First operand has 279 places, 248 transitions, 2915 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:20:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 269 transitions, 3567 flow [2024-06-14 11:20:47,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 3394 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:47,249 INFO L231 Difference]: Finished difference. Result has 281 places, 250 transitions, 2909 flow [2024-06-14 11:20:47,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=281, PETRI_TRANSITIONS=250} [2024-06-14 11:20:47,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-14 11:20:47,249 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 250 transitions, 2909 flow [2024-06-14 11:20:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:47,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:47,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:20:47,250 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)] === [2024-06-14 11:20:47,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash 664150074, now seen corresponding path program 1 times [2024-06-14 11:20:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077481846] [2024-06-14 11:20:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077481846] [2024-06-14 11:20:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077481846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:48,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:48,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146303502] [2024-06-14 11:20:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:48,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:48,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:48,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:48,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 250 transitions, 2909 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:48,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:48,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:48,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:49,432 INFO L124 PetriNetUnfolderBase]: 692/1226 cut-off events. [2024-06-14 11:20:49,432 INFO L125 PetriNetUnfolderBase]: For 80565/80565 co-relation queries the response was YES. [2024-06-14 11:20:49,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8629 conditions, 1226 events. 692/1226 cut-off events. For 80565/80565 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6340 event pairs, 178 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 8501. Up to 1119 conditions per place. [2024-06-14 11:20:49,444 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 227 selfloop transitions, 38 changer transitions 0/267 dead transitions. [2024-06-14 11:20:49,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 267 transitions, 3495 flow [2024-06-14 11:20:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:20:49,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:20:49,445 INFO L175 Difference]: Start difference. First operand has 281 places, 250 transitions, 2909 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:20:49,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 267 transitions, 3495 flow [2024-06-14 11:20:49,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 267 transitions, 3332 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-14 11:20:49,855 INFO L231 Difference]: Finished difference. Result has 283 places, 250 transitions, 2830 flow [2024-06-14 11:20:49,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2830, PETRI_PLACES=283, PETRI_TRANSITIONS=250} [2024-06-14 11:20:49,856 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-14 11:20:49,856 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 250 transitions, 2830 flow [2024-06-14 11:20:49,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:49,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:49,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:49,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:20:49,856 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)] === [2024-06-14 11:20:49,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -954293383, now seen corresponding path program 5 times [2024-06-14 11:20:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045186529] [2024-06-14 11:20:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:51,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045186529] [2024-06-14 11:20:51,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045186529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:51,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:51,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871417214] [2024-06-14 11:20:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:51,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:51,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 250 transitions, 2830 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:51,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:51,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:51,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:52,205 INFO L124 PetriNetUnfolderBase]: 708/1252 cut-off events. [2024-06-14 11:20:52,205 INFO L125 PetriNetUnfolderBase]: For 92003/92003 co-relation queries the response was YES. [2024-06-14 11:20:52,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 1252 events. 708/1252 cut-off events. For 92003/92003 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6490 event pairs, 94 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 8843. Up to 937 conditions per place. [2024-06-14 11:20:52,216 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 189 selfloop transitions, 87 changer transitions 0/278 dead transitions. [2024-06-14 11:20:52,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 278 transitions, 3748 flow [2024-06-14 11:20:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:20:52,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:20:52,217 INFO L175 Difference]: Start difference. First operand has 283 places, 250 transitions, 2830 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:20:52,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 278 transitions, 3748 flow [2024-06-14 11:20:52,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 278 transitions, 3616 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 11:20:52,590 INFO L231 Difference]: Finished difference. Result has 283 places, 254 transitions, 3018 flow [2024-06-14 11:20:52,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3018, PETRI_PLACES=283, PETRI_TRANSITIONS=254} [2024-06-14 11:20:52,590 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-14 11:20:52,590 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 254 transitions, 3018 flow [2024-06-14 11:20:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:52,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:52,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:20:52,591 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)] === [2024-06-14 11:20:52,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 664142355, now seen corresponding path program 6 times [2024-06-14 11:20:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707729312] [2024-06-14 11:20:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:53,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:53,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707729312] [2024-06-14 11:20:53,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707729312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:53,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971321535] [2024-06-14 11:20:53,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:54,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:54,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 254 transitions, 3018 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:54,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:54,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:54,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:54,727 INFO L124 PetriNetUnfolderBase]: 709/1254 cut-off events. [2024-06-14 11:20:54,728 INFO L125 PetriNetUnfolderBase]: For 87839/87839 co-relation queries the response was YES. [2024-06-14 11:20:54,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1254 events. 709/1254 cut-off events. For 87839/87839 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6490 event pairs, 94 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 8902. Up to 940 conditions per place. [2024-06-14 11:20:54,739 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 83 changer transitions 0/279 dead transitions. [2024-06-14 11:20:54,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3866 flow [2024-06-14 11:20:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:20:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:20:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:20:54,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:20:54,740 INFO L175 Difference]: Start difference. First operand has 283 places, 254 transitions, 3018 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:20:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3866 flow [2024-06-14 11:20:55,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 3689 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-14 11:20:55,126 INFO L231 Difference]: Finished difference. Result has 287 places, 256 transitions, 3080 flow [2024-06-14 11:20:55,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3080, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2024-06-14 11:20:55,126 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-14 11:20:55,126 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 3080 flow [2024-06-14 11:20:55,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:55,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:55,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:55,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:20:55,127 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)] === [2024-06-14 11:20:55,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 463672653, now seen corresponding path program 1 times [2024-06-14 11:20:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259894780] [2024-06-14 11:20:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:55,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:56,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259894780] [2024-06-14 11:20:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259894780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:56,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:56,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:20:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622571253] [2024-06-14 11:20:56,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:20:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:20:56,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:20:57,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:57,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 3080 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:57,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:57,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:57,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:57,619 INFO L124 PetriNetUnfolderBase]: 717/1271 cut-off events. [2024-06-14 11:20:57,620 INFO L125 PetriNetUnfolderBase]: For 95481/95481 co-relation queries the response was YES. [2024-06-14 11:20:57,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1271 events. 717/1271 cut-off events. For 95481/95481 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6677 event pairs, 169 based on Foata normal form. 4/1275 useless extension candidates. Maximal degree in co-relation 9038. Up to 1159 conditions per place. [2024-06-14 11:20:57,638 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 241 selfloop transitions, 34 changer transitions 0/277 dead transitions. [2024-06-14 11:20:57,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 277 transitions, 3714 flow [2024-06-14 11:20:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:20:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:20:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:20:57,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-14 11:20:57,640 INFO L175 Difference]: Start difference. First operand has 287 places, 256 transitions, 3080 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:20:57,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 277 transitions, 3714 flow [2024-06-14 11:20:57,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 277 transitions, 3531 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:20:57,973 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2989 flow [2024-06-14 11:20:57,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2989, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2024-06-14 11:20:57,973 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-14 11:20:57,973 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2989 flow [2024-06-14 11:20:57,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:57,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:57,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:57,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:20:57,974 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)] === [2024-06-14 11:20:57,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1888056125, now seen corresponding path program 11 times [2024-06-14 11:20:57,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346360376] [2024-06-14 11:20:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:20:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:20:58,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:20:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346360376] [2024-06-14 11:20:58,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346360376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:20:58,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:20:58,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:20:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891667217] [2024-06-14 11:20:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:20:58,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:20:58,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:20:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:20:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:20:58,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:20:58,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2989 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:58,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:20:58,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:20:58,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:20:59,460 INFO L124 PetriNetUnfolderBase]: 721/1278 cut-off events. [2024-06-14 11:20:59,460 INFO L125 PetriNetUnfolderBase]: For 91708/91708 co-relation queries the response was YES. [2024-06-14 11:20:59,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9119 conditions, 1278 events. 721/1278 cut-off events. For 91708/91708 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6672 event pairs, 151 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 8986. Up to 1119 conditions per place. [2024-06-14 11:20:59,472 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 225 selfloop transitions, 46 changer transitions 0/273 dead transitions. [2024-06-14 11:20:59,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 273 transitions, 3607 flow [2024-06-14 11:20:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:20:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:20:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:20:59,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:20:59,473 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2989 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:20:59,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 273 transitions, 3607 flow [2024-06-14 11:20:59,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 273 transitions, 3525 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 11:20:59,852 INFO L231 Difference]: Finished difference. Result has 290 places, 258 transitions, 3048 flow [2024-06-14 11:20:59,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3048, PETRI_PLACES=290, PETRI_TRANSITIONS=258} [2024-06-14 11:20:59,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-14 11:20:59,853 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 258 transitions, 3048 flow [2024-06-14 11:20:59,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:20:59,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:20:59,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:20:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:20:59,854 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)] === [2024-06-14 11:20:59,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:20:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1002076483, now seen corresponding path program 12 times [2024-06-14 11:20:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:20:59,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934414577] [2024-06-14 11:20:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:20:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:20:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934414577] [2024-06-14 11:21:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934414577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:00,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:00,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:00,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702670409] [2024-06-14 11:21:00,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:00,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:00,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:00,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:00,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 258 transitions, 3048 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:00,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:00,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:00,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:01,422 INFO L124 PetriNetUnfolderBase]: 731/1296 cut-off events. [2024-06-14 11:21:01,422 INFO L125 PetriNetUnfolderBase]: For 94522/94522 co-relation queries the response was YES. [2024-06-14 11:21:01,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9339 conditions, 1296 events. 731/1296 cut-off events. For 94522/94522 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6789 event pairs, 124 based on Foata normal form. 2/1298 useless extension candidates. Maximal degree in co-relation 9205. Up to 1122 conditions per place. [2024-06-14 11:21:01,435 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 222 selfloop transitions, 52 changer transitions 0/276 dead transitions. [2024-06-14 11:21:01,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 276 transitions, 3723 flow [2024-06-14 11:21:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:21:01,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 11:21:01,436 INFO L175 Difference]: Start difference. First operand has 290 places, 258 transitions, 3048 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:21:01,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 276 transitions, 3723 flow [2024-06-14 11:21:01,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 276 transitions, 3598 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:01,849 INFO L231 Difference]: Finished difference. Result has 292 places, 263 transitions, 3132 flow [2024-06-14 11:21:01,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3132, PETRI_PLACES=292, PETRI_TRANSITIONS=263} [2024-06-14 11:21:01,849 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2024-06-14 11:21:01,850 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 263 transitions, 3132 flow [2024-06-14 11:21:01,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:01,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:01,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:21:01,850 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)] === [2024-06-14 11:21:01,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -682121469, now seen corresponding path program 13 times [2024-06-14 11:21:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:01,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954209685] [2024-06-14 11:21:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954209685] [2024-06-14 11:21:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954209685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673007469] [2024-06-14 11:21:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:02,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:02,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 263 transitions, 3132 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:02,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:02,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:03,267 INFO L124 PetriNetUnfolderBase]: 735/1304 cut-off events. [2024-06-14 11:21:03,267 INFO L125 PetriNetUnfolderBase]: For 92300/92300 co-relation queries the response was YES. [2024-06-14 11:21:03,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9357 conditions, 1304 events. 735/1304 cut-off events. For 92300/92300 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6838 event pairs, 107 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 9222. Up to 1069 conditions per place. [2024-06-14 11:21:03,285 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 233 selfloop transitions, 46 changer transitions 0/281 dead transitions. [2024-06-14 11:21:03,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 281 transitions, 3768 flow [2024-06-14 11:21:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:21:03,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-14 11:21:03,287 INFO L175 Difference]: Start difference. First operand has 292 places, 263 transitions, 3132 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:21:03,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 281 transitions, 3768 flow [2024-06-14 11:21:03,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 281 transitions, 3661 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 11:21:03,757 INFO L231 Difference]: Finished difference. Result has 297 places, 264 transitions, 3165 flow [2024-06-14 11:21:03,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3165, PETRI_PLACES=297, PETRI_TRANSITIONS=264} [2024-06-14 11:21:03,757 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-14 11:21:03,757 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 264 transitions, 3165 flow [2024-06-14 11:21:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:03,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:03,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:03,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:21:03,758 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)] === [2024-06-14 11:21:03,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash -593401887, now seen corresponding path program 7 times [2024-06-14 11:21:03,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:03,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983118829] [2024-06-14 11:21:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:03,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:05,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:05,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983118829] [2024-06-14 11:21:05,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983118829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:05,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:05,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148676777] [2024-06-14 11:21:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:05,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:05,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:05,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:05,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 264 transitions, 3165 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:05,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:05,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:05,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:06,117 INFO L124 PetriNetUnfolderBase]: 741/1314 cut-off events. [2024-06-14 11:21:06,117 INFO L125 PetriNetUnfolderBase]: For 89404/89404 co-relation queries the response was YES. [2024-06-14 11:21:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 1314 events. 741/1314 cut-off events. For 89404/89404 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6895 event pairs, 153 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 9293. Up to 1149 conditions per place. [2024-06-14 11:21:06,130 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-14 11:21:06,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 283 transitions, 3843 flow [2024-06-14 11:21:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:21:06,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:21:06,131 INFO L175 Difference]: Start difference. First operand has 297 places, 264 transitions, 3165 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:21:06,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 283 transitions, 3843 flow [2024-06-14 11:21:06,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 283 transitions, 3723 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:06,523 INFO L231 Difference]: Finished difference. Result has 299 places, 266 transitions, 3220 flow [2024-06-14 11:21:06,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3220, PETRI_PLACES=299, PETRI_TRANSITIONS=266} [2024-06-14 11:21:06,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-14 11:21:06,524 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 266 transitions, 3220 flow [2024-06-14 11:21:06,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:06,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:06,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:06,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:21:06,524 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)] === [2024-06-14 11:21:06,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:06,525 INFO L85 PathProgramCache]: Analyzing trace with hash -593551834, now seen corresponding path program 3 times [2024-06-14 11:21:06,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:06,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919073632] [2024-06-14 11:21:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:06,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:07,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919073632] [2024-06-14 11:21:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919073632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:07,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102879999] [2024-06-14 11:21:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:07,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:07,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:07,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 266 transitions, 3220 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:07,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:07,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:07,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:08,165 INFO L124 PetriNetUnfolderBase]: 739/1311 cut-off events. [2024-06-14 11:21:08,165 INFO L125 PetriNetUnfolderBase]: For 79027/79027 co-relation queries the response was YES. [2024-06-14 11:21:08,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1311 events. 739/1311 cut-off events. For 79027/79027 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6911 event pairs, 151 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 9117. Up to 1143 conditions per place. [2024-06-14 11:21:08,178 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 224 selfloop transitions, 55 changer transitions 0/281 dead transitions. [2024-06-14 11:21:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 281 transitions, 3820 flow [2024-06-14 11:21:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:21:08,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 11:21:08,179 INFO L175 Difference]: Start difference. First operand has 299 places, 266 transitions, 3220 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:21:08,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 281 transitions, 3820 flow [2024-06-14 11:21:08,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 281 transitions, 3671 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:08,548 INFO L231 Difference]: Finished difference. Result has 300 places, 266 transitions, 3201 flow [2024-06-14 11:21:08,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3201, PETRI_PLACES=300, PETRI_TRANSITIONS=266} [2024-06-14 11:21:08,548 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-14 11:21:08,548 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 266 transitions, 3201 flow [2024-06-14 11:21:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:08,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:08,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:21:08,549 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)] === [2024-06-14 11:21:08,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash 290220627, now seen corresponding path program 14 times [2024-06-14 11:21:08,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:08,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164327808] [2024-06-14 11:21:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:08,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:09,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164327808] [2024-06-14 11:21:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164327808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:09,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:09,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:09,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706003168] [2024-06-14 11:21:09,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:09,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:09,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 266 transitions, 3201 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:09,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:09,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:09,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:10,074 INFO L124 PetriNetUnfolderBase]: 743/1319 cut-off events. [2024-06-14 11:21:10,074 INFO L125 PetriNetUnfolderBase]: For 83594/83594 co-relation queries the response was YES. [2024-06-14 11:21:10,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1319 events. 743/1319 cut-off events. For 83594/83594 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6937 event pairs, 95 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 9179. Up to 1069 conditions per place. [2024-06-14 11:21:10,087 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 208 selfloop transitions, 73 changer transitions 0/283 dead transitions. [2024-06-14 11:21:10,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 283 transitions, 3839 flow [2024-06-14 11:21:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 11:21:10,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 11:21:10,088 INFO L175 Difference]: Start difference. First operand has 300 places, 266 transitions, 3201 flow. Second operand 9 states and 104 transitions. [2024-06-14 11:21:10,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 283 transitions, 3839 flow [2024-06-14 11:21:10,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 283 transitions, 3673 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 11:21:10,491 INFO L231 Difference]: Finished difference. Result has 299 places, 267 transitions, 3217 flow [2024-06-14 11:21:10,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3217, PETRI_PLACES=299, PETRI_TRANSITIONS=267} [2024-06-14 11:21:10,491 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-14 11:21:10,491 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 267 transitions, 3217 flow [2024-06-14 11:21:10,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:10,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:10,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:10,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:21:10,492 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)] === [2024-06-14 11:21:10,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:10,492 INFO L85 PathProgramCache]: Analyzing trace with hash 290436108, now seen corresponding path program 2 times [2024-06-14 11:21:10,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:10,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976086146] [2024-06-14 11:21:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:10,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:12,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:12,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976086146] [2024-06-14 11:21:12,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976086146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:12,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:12,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:12,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609906693] [2024-06-14 11:21:12,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:12,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:12,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:12,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:12,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:12,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 267 transitions, 3217 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:12,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:12,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:12,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:12,982 INFO L124 PetriNetUnfolderBase]: 746/1324 cut-off events. [2024-06-14 11:21:12,982 INFO L125 PetriNetUnfolderBase]: For 79733/79733 co-relation queries the response was YES. [2024-06-14 11:21:12,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1324 events. 746/1324 cut-off events. For 79733/79733 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7013 event pairs, 183 based on Foata normal form. 1/1325 useless extension candidates. Maximal degree in co-relation 9213. Up to 1169 conditions per place. [2024-06-14 11:21:12,996 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 58 changer transitions 0/284 dead transitions. [2024-06-14 11:21:12,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 284 transitions, 3883 flow [2024-06-14 11:21:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:21:12,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-14 11:21:12,997 INFO L175 Difference]: Start difference. First operand has 299 places, 267 transitions, 3217 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:21:12,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 284 transitions, 3883 flow [2024-06-14 11:21:13,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 284 transitions, 3713 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:13,453 INFO L231 Difference]: Finished difference. Result has 302 places, 269 transitions, 3233 flow [2024-06-14 11:21:13,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3233, PETRI_PLACES=302, PETRI_TRANSITIONS=269} [2024-06-14 11:21:13,454 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-14 11:21:13,454 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 269 transitions, 3233 flow [2024-06-14 11:21:13,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:13,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:13,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:13,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:21:13,455 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)] === [2024-06-14 11:21:13,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1332927041, now seen corresponding path program 15 times [2024-06-14 11:21:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122103493] [2024-06-14 11:21:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:14,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:14,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122103493] [2024-06-14 11:21:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122103493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797319217] [2024-06-14 11:21:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:14,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:14,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 269 transitions, 3233 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:14,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:14,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:14,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:14,987 INFO L124 PetriNetUnfolderBase]: 750/1332 cut-off events. [2024-06-14 11:21:14,987 INFO L125 PetriNetUnfolderBase]: For 82227/82227 co-relation queries the response was YES. [2024-06-14 11:21:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 1332 events. 750/1332 cut-off events. For 82227/82227 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7029 event pairs, 119 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 9202. Up to 1153 conditions per place. [2024-06-14 11:21:14,998 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 229 selfloop transitions, 53 changer transitions 0/284 dead transitions. [2024-06-14 11:21:14,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 284 transitions, 3863 flow [2024-06-14 11:21:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:21:14,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 11:21:14,999 INFO L175 Difference]: Start difference. First operand has 302 places, 269 transitions, 3233 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:21:14,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 284 transitions, 3863 flow [2024-06-14 11:21:15,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 284 transitions, 3711 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:15,342 INFO L231 Difference]: Finished difference. Result has 302 places, 270 transitions, 3223 flow [2024-06-14 11:21:15,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3223, PETRI_PLACES=302, PETRI_TRANSITIONS=270} [2024-06-14 11:21:15,342 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-14 11:21:15,343 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 270 transitions, 3223 flow [2024-06-14 11:21:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:15,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:15,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:21:15,343 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)] === [2024-06-14 11:21:15,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1308778723, now seen corresponding path program 8 times [2024-06-14 11:21:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:15,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821891775] [2024-06-14 11:21:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821891775] [2024-06-14 11:21:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821891775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:16,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:16,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368739664] [2024-06-14 11:21:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:16,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:16,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 270 transitions, 3223 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:16,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:16,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:16,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:17,576 INFO L124 PetriNetUnfolderBase]: 776/1374 cut-off events. [2024-06-14 11:21:17,576 INFO L125 PetriNetUnfolderBase]: For 93136/93136 co-relation queries the response was YES. [2024-06-14 11:21:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 1374 events. 776/1374 cut-off events. For 93136/93136 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7244 event pairs, 96 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 9925. Up to 913 conditions per place. [2024-06-14 11:21:17,591 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 115 changer transitions 0/297 dead transitions. [2024-06-14 11:21:17,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 297 transitions, 4391 flow [2024-06-14 11:21:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:21:17,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:21:17,592 INFO L175 Difference]: Start difference. First operand has 302 places, 270 transitions, 3223 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:21:17,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 297 transitions, 4391 flow [2024-06-14 11:21:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 297 transitions, 4257 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:17,975 INFO L231 Difference]: Finished difference. Result has 305 places, 276 transitions, 3551 flow [2024-06-14 11:21:17,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3551, PETRI_PLACES=305, PETRI_TRANSITIONS=276} [2024-06-14 11:21:17,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-14 11:21:17,975 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 276 transitions, 3551 flow [2024-06-14 11:21:17,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:17,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:17,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:17,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:21:17,976 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)] === [2024-06-14 11:21:17,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash 290435829, now seen corresponding path program 9 times [2024-06-14 11:21:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623358038] [2024-06-14 11:21:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623358038] [2024-06-14 11:21:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623358038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:19,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415795795] [2024-06-14 11:21:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:19,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:19,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 276 transitions, 3551 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:19,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:19,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:19,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:20,075 INFO L124 PetriNetUnfolderBase]: 772/1368 cut-off events. [2024-06-14 11:21:20,076 INFO L125 PetriNetUnfolderBase]: For 88049/88049 co-relation queries the response was YES. [2024-06-14 11:21:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10008 conditions, 1368 events. 772/1368 cut-off events. For 88049/88049 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7215 event pairs, 95 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9869. Up to 910 conditions per place. [2024-06-14 11:21:20,091 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 170 selfloop transitions, 125 changer transitions 0/297 dead transitions. [2024-06-14 11:21:20,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 297 transitions, 4359 flow [2024-06-14 11:21:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:21:20,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:21:20,092 INFO L175 Difference]: Start difference. First operand has 305 places, 276 transitions, 3551 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:21:20,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 297 transitions, 4359 flow [2024-06-14 11:21:20,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 297 transitions, 4122 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-14 11:21:20,506 INFO L231 Difference]: Finished difference. Result has 309 places, 276 transitions, 3576 flow [2024-06-14 11:21:20,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3576, PETRI_PLACES=309, PETRI_TRANSITIONS=276} [2024-06-14 11:21:20,507 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-14 11:21:20,507 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 276 transitions, 3576 flow [2024-06-14 11:21:20,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:20,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:20,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:21:20,508 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)] === [2024-06-14 11:21:20,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 284710377, now seen corresponding path program 16 times [2024-06-14 11:21:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687366138] [2024-06-14 11:21:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:21,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687366138] [2024-06-14 11:21:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687366138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:21,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:21,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42787081] [2024-06-14 11:21:21,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:21,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:21,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 276 transitions, 3576 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:21,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:21,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:21,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:22,017 INFO L124 PetriNetUnfolderBase]: 780/1384 cut-off events. [2024-06-14 11:21:22,018 INFO L125 PetriNetUnfolderBase]: For 86592/86592 co-relation queries the response was YES. [2024-06-14 11:21:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1384 events. 780/1384 cut-off events. For 86592/86592 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7357 event pairs, 117 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 10025. Up to 1205 conditions per place. [2024-06-14 11:21:22,032 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 239 selfloop transitions, 51 changer transitions 0/292 dead transitions. [2024-06-14 11:21:22,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 4225 flow [2024-06-14 11:21:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:21:22,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 11:21:22,033 INFO L175 Difference]: Start difference. First operand has 309 places, 276 transitions, 3576 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:21:22,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 4225 flow [2024-06-14 11:21:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 292 transitions, 3999 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:22,581 INFO L231 Difference]: Finished difference. Result has 310 places, 278 transitions, 3499 flow [2024-06-14 11:21:22,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3499, PETRI_PLACES=310, PETRI_TRANSITIONS=278} [2024-06-14 11:21:22,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-14 11:21:22,581 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 278 transitions, 3499 flow [2024-06-14 11:21:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:22,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:22,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:22,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:21:22,582 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)] === [2024-06-14 11:21:22,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1314342913, now seen corresponding path program 10 times [2024-06-14 11:21:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:22,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015099810] [2024-06-14 11:21:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015099810] [2024-06-14 11:21:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015099810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:24,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:24,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:24,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273149118] [2024-06-14 11:21:24,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:24,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:24,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:24,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:24,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 278 transitions, 3499 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:24,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:24,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:24,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:25,191 INFO L124 PetriNetUnfolderBase]: 786/1394 cut-off events. [2024-06-14 11:21:25,191 INFO L125 PetriNetUnfolderBase]: For 87188/87188 co-relation queries the response was YES. [2024-06-14 11:21:25,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10132 conditions, 1394 events. 786/1394 cut-off events. For 87188/87188 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7447 event pairs, 121 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 9991. Up to 1195 conditions per place. [2024-06-14 11:21:25,202 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 235 selfloop transitions, 59 changer transitions 0/296 dead transitions. [2024-06-14 11:21:25,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 296 transitions, 4201 flow [2024-06-14 11:21:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:21:25,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:21:25,203 INFO L175 Difference]: Start difference. First operand has 310 places, 278 transitions, 3499 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:21:25,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 296 transitions, 4201 flow [2024-06-14 11:21:25,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 296 transitions, 4077 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 11:21:25,605 INFO L231 Difference]: Finished difference. Result has 314 places, 280 transitions, 3573 flow [2024-06-14 11:21:25,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3573, PETRI_PLACES=314, PETRI_TRANSITIONS=280} [2024-06-14 11:21:25,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-14 11:21:25,606 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 280 transitions, 3573 flow [2024-06-14 11:21:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:25,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:25,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:25,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:21:25,607 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)] === [2024-06-14 11:21:25,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1308980533, now seen corresponding path program 11 times [2024-06-14 11:21:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720460734] [2024-06-14 11:21:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:27,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:27,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720460734] [2024-06-14 11:21:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720460734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:27,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:27,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662992434] [2024-06-14 11:21:27,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:27,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:27,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:27,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:27,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 280 transitions, 3573 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:27,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:27,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:27,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:27,760 INFO L124 PetriNetUnfolderBase]: 787/1396 cut-off events. [2024-06-14 11:21:27,761 INFO L125 PetriNetUnfolderBase]: For 84754/84754 co-relation queries the response was YES. [2024-06-14 11:21:27,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10107 conditions, 1396 events. 787/1396 cut-off events. For 84754/84754 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7441 event pairs, 99 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 9965. Up to 1126 conditions per place. [2024-06-14 11:21:27,775 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 219 selfloop transitions, 79 changer transitions 0/300 dead transitions. [2024-06-14 11:21:27,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 300 transitions, 4297 flow [2024-06-14 11:21:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:21:27,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:21:27,776 INFO L175 Difference]: Start difference. First operand has 314 places, 280 transitions, 3573 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:21:27,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 300 transitions, 4297 flow [2024-06-14 11:21:28,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 300 transitions, 4135 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:28,211 INFO L231 Difference]: Finished difference. Result has 316 places, 282 transitions, 3653 flow [2024-06-14 11:21:28,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3653, PETRI_PLACES=316, PETRI_TRANSITIONS=282} [2024-06-14 11:21:28,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-14 11:21:28,212 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 282 transitions, 3653 flow [2024-06-14 11:21:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:28,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:28,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:28,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:21:28,213 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)] === [2024-06-14 11:21:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1331640327, now seen corresponding path program 2 times [2024-06-14 11:21:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923708155] [2024-06-14 11:21:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:30,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:30,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923708155] [2024-06-14 11:21:30,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923708155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:30,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:30,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030404870] [2024-06-14 11:21:30,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:30,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:30,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:30,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:30,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:30,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 282 transitions, 3653 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:30,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:30,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:30,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:30,735 INFO L124 PetriNetUnfolderBase]: 795/1412 cut-off events. [2024-06-14 11:21:30,736 INFO L125 PetriNetUnfolderBase]: For 92347/92347 co-relation queries the response was YES. [2024-06-14 11:21:30,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10217 conditions, 1412 events. 795/1412 cut-off events. For 92347/92347 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7636 event pairs, 176 based on Foata normal form. 4/1416 useless extension candidates. Maximal degree in co-relation 10074. Up to 1253 conditions per place. [2024-06-14 11:21:30,750 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 252 selfloop transitions, 47 changer transitions 0/301 dead transitions. [2024-06-14 11:21:30,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 301 transitions, 4331 flow [2024-06-14 11:21:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:21:30,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:21:30,751 INFO L175 Difference]: Start difference. First operand has 316 places, 282 transitions, 3653 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:21:30,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 301 transitions, 4331 flow [2024-06-14 11:21:31,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 301 transitions, 4125 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:21:31,183 INFO L231 Difference]: Finished difference. Result has 319 places, 283 transitions, 3569 flow [2024-06-14 11:21:31,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3569, PETRI_PLACES=319, PETRI_TRANSITIONS=283} [2024-06-14 11:21:31,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:21:31,184 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 283 transitions, 3569 flow [2024-06-14 11:21:31,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:31,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:31,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:31,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:21:31,185 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)] === [2024-06-14 11:21:31,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash -755879267, now seen corresponding path program 17 times [2024-06-14 11:21:31,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:31,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584519622] [2024-06-14 11:21:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:32,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:32,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584519622] [2024-06-14 11:21:32,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584519622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:32,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:32,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:32,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317636146] [2024-06-14 11:21:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:32,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:32,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:32,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 283 transitions, 3569 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:32,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:32,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:32,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:32,855 INFO L124 PetriNetUnfolderBase]: 799/1422 cut-off events. [2024-06-14 11:21:32,856 INFO L125 PetriNetUnfolderBase]: For 88444/88444 co-relation queries the response was YES. [2024-06-14 11:21:32,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 1422 events. 799/1422 cut-off events. For 88444/88444 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7651 event pairs, 135 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 10028. Up to 1251 conditions per place. [2024-06-14 11:21:32,877 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-14 11:21:32,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 297 transitions, 4225 flow [2024-06-14 11:21:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:21:32,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:21:32,879 INFO L175 Difference]: Start difference. First operand has 319 places, 283 transitions, 3569 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:21:32,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 297 transitions, 4225 flow [2024-06-14 11:21:33,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 297 transitions, 4115 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:33,336 INFO L231 Difference]: Finished difference. Result has 319 places, 284 transitions, 3589 flow [2024-06-14 11:21:33,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3589, PETRI_PLACES=319, PETRI_TRANSITIONS=284} [2024-06-14 11:21:33,336 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 11:21:33,336 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 284 transitions, 3589 flow [2024-06-14 11:21:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:33,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:33,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:21:33,337 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)] === [2024-06-14 11:21:33,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 957490045, now seen corresponding path program 12 times [2024-06-14 11:21:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937277452] [2024-06-14 11:21:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:34,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:34,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937277452] [2024-06-14 11:21:34,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937277452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:34,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:34,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:34,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226196230] [2024-06-14 11:21:34,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:34,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:34,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:34,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:34,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:35,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:35,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 284 transitions, 3589 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:35,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:35,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:35,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:35,654 INFO L124 PetriNetUnfolderBase]: 815/1446 cut-off events. [2024-06-14 11:21:35,654 INFO L125 PetriNetUnfolderBase]: For 95452/95452 co-relation queries the response was YES. [2024-06-14 11:21:35,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10602 conditions, 1446 events. 815/1446 cut-off events. For 95452/95452 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7796 event pairs, 93 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 10457. Up to 1113 conditions per place. [2024-06-14 11:21:35,668 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 218 selfloop transitions, 89 changer transitions 0/309 dead transitions. [2024-06-14 11:21:35,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 4573 flow [2024-06-14 11:21:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:21:35,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:21:35,669 INFO L175 Difference]: Start difference. First operand has 319 places, 284 transitions, 3589 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:21:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 4573 flow [2024-06-14 11:21:36,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 4453 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:36,169 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 3800 flow [2024-06-14 11:21:36,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3800, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2024-06-14 11:21:36,169 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-14 11:21:36,169 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 3800 flow [2024-06-14 11:21:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:36,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:36,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:36,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:21:36,170 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)] === [2024-06-14 11:21:36,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash -559586319, now seen corresponding path program 13 times [2024-06-14 11:21:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:36,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675963351] [2024-06-14 11:21:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:36,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:37,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:37,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675963351] [2024-06-14 11:21:37,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675963351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:37,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:37,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:37,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226452923] [2024-06-14 11:21:37,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:37,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:37,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:37,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:37,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:37,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 3800 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:37,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:37,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:37,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:38,463 INFO L124 PetriNetUnfolderBase]: 837/1482 cut-off events. [2024-06-14 11:21:38,463 INFO L125 PetriNetUnfolderBase]: For 105656/105656 co-relation queries the response was YES. [2024-06-14 11:21:38,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11233 conditions, 1482 events. 837/1482 cut-off events. For 105656/105656 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7989 event pairs, 136 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 11087. Up to 1268 conditions per place. [2024-06-14 11:21:38,477 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 254 selfloop transitions, 57 changer transitions 0/313 dead transitions. [2024-06-14 11:21:38,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 313 transitions, 4802 flow [2024-06-14 11:21:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:21:38,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:21:38,480 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 3800 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:21:38,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 313 transitions, 4802 flow [2024-06-14 11:21:38,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 313 transitions, 4607 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-14 11:21:38,986 INFO L231 Difference]: Finished difference. Result has 327 places, 294 transitions, 3901 flow [2024-06-14 11:21:38,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3901, PETRI_PLACES=327, PETRI_TRANSITIONS=294} [2024-06-14 11:21:38,987 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-14 11:21:38,987 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 294 transitions, 3901 flow [2024-06-14 11:21:38,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:38,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:38,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:38,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:21:38,988 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)] === [2024-06-14 11:21:38,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash -397064675, now seen corresponding path program 14 times [2024-06-14 11:21:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:38,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782025721] [2024-06-14 11:21:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782025721] [2024-06-14 11:21:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782025721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143356404] [2024-06-14 11:21:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:40,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:40,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 294 transitions, 3901 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:40,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:40,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:40,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:40,902 INFO L124 PetriNetUnfolderBase]: 859/1518 cut-off events. [2024-06-14 11:21:40,902 INFO L125 PetriNetUnfolderBase]: For 121650/121650 co-relation queries the response was YES. [2024-06-14 11:21:40,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11752 conditions, 1518 events. 859/1518 cut-off events. For 121650/121650 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8213 event pairs, 291 based on Foata normal form. 4/1522 useless extension candidates. Maximal degree in co-relation 11603. Up to 1443 conditions per place. [2024-06-14 11:21:40,921 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 288 selfloop transitions, 24 changer transitions 0/314 dead transitions. [2024-06-14 11:21:40,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 314 transitions, 4867 flow [2024-06-14 11:21:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 11:21:40,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-14 11:21:40,922 INFO L175 Difference]: Start difference. First operand has 327 places, 294 transitions, 3901 flow. Second operand 11 states and 114 transitions. [2024-06-14 11:21:40,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 314 transitions, 4867 flow [2024-06-14 11:21:41,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 314 transitions, 4719 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-14 11:21:41,415 INFO L231 Difference]: Finished difference. Result has 333 places, 299 transitions, 3955 flow [2024-06-14 11:21:41,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3955, PETRI_PLACES=333, PETRI_TRANSITIONS=299} [2024-06-14 11:21:41,416 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-14 11:21:41,416 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 299 transitions, 3955 flow [2024-06-14 11:21:41,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:41,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:41,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:41,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:21:41,416 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)] === [2024-06-14 11:21:41,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1228698893, now seen corresponding path program 18 times [2024-06-14 11:21:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474130768] [2024-06-14 11:21:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:42,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474130768] [2024-06-14 11:21:42,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474130768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:42,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:21:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504085647] [2024-06-14 11:21:42,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:42,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:21:42,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:42,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:21:42,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:21:42,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:42,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 299 transitions, 3955 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:42,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:42,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:42,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:42,882 INFO L124 PetriNetUnfolderBase]: 863/1526 cut-off events. [2024-06-14 11:21:42,882 INFO L125 PetriNetUnfolderBase]: For 117333/117333 co-relation queries the response was YES. [2024-06-14 11:21:42,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11808 conditions, 1526 events. 863/1526 cut-off events. For 117333/117333 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8270 event pairs, 100 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 11657. Up to 1238 conditions per place. [2024-06-14 11:21:42,898 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 233 selfloop transitions, 80 changer transitions 0/315 dead transitions. [2024-06-14 11:21:42,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 315 transitions, 4659 flow [2024-06-14 11:21:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:21:42,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-14 11:21:42,900 INFO L175 Difference]: Start difference. First operand has 333 places, 299 transitions, 3955 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:21:42,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 315 transitions, 4659 flow [2024-06-14 11:21:43,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 315 transitions, 4538 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:43,421 INFO L231 Difference]: Finished difference. Result has 335 places, 300 transitions, 4030 flow [2024-06-14 11:21:43,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4030, PETRI_PLACES=335, PETRI_TRANSITIONS=300} [2024-06-14 11:21:43,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-14 11:21:43,421 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 300 transitions, 4030 flow [2024-06-14 11:21:43,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:43,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:43,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:43,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:21:43,422 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)] === [2024-06-14 11:21:43,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1382621927, now seen corresponding path program 15 times [2024-06-14 11:21:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:43,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452790665] [2024-06-14 11:21:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:43,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:44,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:44,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452790665] [2024-06-14 11:21:44,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452790665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:44,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:44,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:44,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150598094] [2024-06-14 11:21:44,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:44,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:44,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:44,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:44,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 300 transitions, 4030 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:44,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:44,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:44,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:45,435 INFO L124 PetriNetUnfolderBase]: 869/1536 cut-off events. [2024-06-14 11:21:45,435 INFO L125 PetriNetUnfolderBase]: For 119040/119040 co-relation queries the response was YES. [2024-06-14 11:21:45,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 1536 events. 869/1536 cut-off events. For 119040/119040 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8334 event pairs, 135 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11817. Up to 1318 conditions per place. [2024-06-14 11:21:45,452 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 260 selfloop transitions, 58 changer transitions 0/320 dead transitions. [2024-06-14 11:21:45,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 320 transitions, 4946 flow [2024-06-14 11:21:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:21:45,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:21:45,453 INFO L175 Difference]: Start difference. First operand has 335 places, 300 transitions, 4030 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:21:45,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 320 transitions, 4946 flow [2024-06-14 11:21:45,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 320 transitions, 4760 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:45,991 INFO L231 Difference]: Finished difference. Result has 338 places, 302 transitions, 4027 flow [2024-06-14 11:21:45,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3844, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4027, PETRI_PLACES=338, PETRI_TRANSITIONS=302} [2024-06-14 11:21:45,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 306 predicate places. [2024-06-14 11:21:45,991 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 302 transitions, 4027 flow [2024-06-14 11:21:45,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:45,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:45,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:21:45,992 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)] === [2024-06-14 11:21:45,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1228491131, now seen corresponding path program 16 times [2024-06-14 11:21:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842077358] [2024-06-14 11:21:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:47,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842077358] [2024-06-14 11:21:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842077358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:47,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:47,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795779826] [2024-06-14 11:21:47,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:47,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:47,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:47,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:47,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 302 transitions, 4027 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:47,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:47,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:47,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:48,458 INFO L124 PetriNetUnfolderBase]: 875/1546 cut-off events. [2024-06-14 11:21:48,458 INFO L125 PetriNetUnfolderBase]: For 121795/121795 co-relation queries the response was YES. [2024-06-14 11:21:48,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12005 conditions, 1546 events. 875/1546 cut-off events. For 121795/121795 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8403 event pairs, 95 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 11851. Up to 1209 conditions per place. [2024-06-14 11:21:48,475 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 90 changer transitions 0/324 dead transitions. [2024-06-14 11:21:48,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 324 transitions, 4963 flow [2024-06-14 11:21:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:21:48,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:21:48,476 INFO L175 Difference]: Start difference. First operand has 338 places, 302 transitions, 4027 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:21:48,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 324 transitions, 4963 flow [2024-06-14 11:21:49,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 324 transitions, 4810 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 11:21:49,053 INFO L231 Difference]: Finished difference. Result has 342 places, 304 transitions, 4121 flow [2024-06-14 11:21:49,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4121, PETRI_PLACES=342, PETRI_TRANSITIONS=304} [2024-06-14 11:21:49,053 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2024-06-14 11:21:49,053 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 304 transitions, 4121 flow [2024-06-14 11:21:49,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:49,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:49,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:49,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:21:49,053 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)] === [2024-06-14 11:21:49,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1382420117, now seen corresponding path program 17 times [2024-06-14 11:21:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448293958] [2024-06-14 11:21:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:49,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448293958] [2024-06-14 11:21:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448293958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519725200] [2024-06-14 11:21:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:50,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:50,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 304 transitions, 4121 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:50,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:50,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:50,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:51,482 INFO L124 PetriNetUnfolderBase]: 871/1540 cut-off events. [2024-06-14 11:21:51,483 INFO L125 PetriNetUnfolderBase]: For 117703/117703 co-relation queries the response was YES. [2024-06-14 11:21:51,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 1540 events. 871/1540 cut-off events. For 117703/117703 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8384 event pairs, 145 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 11696. Up to 1361 conditions per place. [2024-06-14 11:21:51,499 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 266 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-06-14 11:21:51,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 319 transitions, 4801 flow [2024-06-14 11:21:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:21:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:21:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:21:51,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:21:51,500 INFO L175 Difference]: Start difference. First operand has 342 places, 304 transitions, 4121 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:21:51,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 319 transitions, 4801 flow [2024-06-14 11:21:52,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 319 transitions, 4526 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-14 11:21:52,146 INFO L231 Difference]: Finished difference. Result has 345 places, 304 transitions, 3953 flow [2024-06-14 11:21:52,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3953, PETRI_PLACES=345, PETRI_TRANSITIONS=304} [2024-06-14 11:21:52,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-14 11:21:52,146 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 304 transitions, 3953 flow [2024-06-14 11:21:52,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:52,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:52,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:52,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:21:52,147 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)] === [2024-06-14 11:21:52,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1390048597, now seen corresponding path program 3 times [2024-06-14 11:21:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746459799] [2024-06-14 11:21:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:53,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:53,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746459799] [2024-06-14 11:21:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746459799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:53,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068526319] [2024-06-14 11:21:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:54,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:54,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 304 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:54,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:54,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:54,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:54,611 INFO L124 PetriNetUnfolderBase]: 879/1556 cut-off events. [2024-06-14 11:21:54,612 INFO L125 PetriNetUnfolderBase]: For 126312/126312 co-relation queries the response was YES. [2024-06-14 11:21:54,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11708 conditions, 1556 events. 879/1556 cut-off events. For 126312/126312 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8564 event pairs, 200 based on Foata normal form. 4/1560 useless extension candidates. Maximal degree in co-relation 11552. Up to 1443 conditions per place. [2024-06-14 11:21:54,630 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 284 selfloop transitions, 35 changer transitions 0/321 dead transitions. [2024-06-14 11:21:54,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 321 transitions, 4665 flow [2024-06-14 11:21:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:21:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:21:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 11:21:54,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-14 11:21:54,631 INFO L175 Difference]: Start difference. First operand has 345 places, 304 transitions, 3953 flow. Second operand 11 states and 114 transitions. [2024-06-14 11:21:54,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 321 transitions, 4665 flow [2024-06-14 11:21:55,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 321 transitions, 4547 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:21:55,301 INFO L231 Difference]: Finished difference. Result has 346 places, 305 transitions, 3931 flow [2024-06-14 11:21:55,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3931, PETRI_PLACES=346, PETRI_TRANSITIONS=305} [2024-06-14 11:21:55,302 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-14 11:21:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 305 transitions, 3931 flow [2024-06-14 11:21:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:55,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:55,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:21:55,302 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)] === [2024-06-14 11:21:55,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1188474755, now seen corresponding path program 19 times [2024-06-14 11:21:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:55,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940916724] [2024-06-14 11:21:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940916724] [2024-06-14 11:21:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940916724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:56,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781018503] [2024-06-14 11:21:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:56,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:56,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:56,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 305 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:56,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:56,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:56,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:57,008 INFO L124 PetriNetUnfolderBase]: 883/1564 cut-off events. [2024-06-14 11:21:57,009 INFO L125 PetriNetUnfolderBase]: For 122581/122581 co-relation queries the response was YES. [2024-06-14 11:21:57,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11757 conditions, 1564 events. 883/1564 cut-off events. For 122581/122581 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8548 event pairs, 147 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 11600. Up to 1372 conditions per place. [2024-06-14 11:21:57,024 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 265 selfloop transitions, 54 changer transitions 0/321 dead transitions. [2024-06-14 11:21:57,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 321 transitions, 4647 flow [2024-06-14 11:21:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:21:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:21:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 11:21:57,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 11:21:57,025 INFO L175 Difference]: Start difference. First operand has 346 places, 305 transitions, 3931 flow. Second operand 9 states and 104 transitions. [2024-06-14 11:21:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 321 transitions, 4647 flow [2024-06-14 11:21:57,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 321 transitions, 4561 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 11:21:57,745 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 3993 flow [2024-06-14 11:21:57,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3993, PETRI_PLACES=346, PETRI_TRANSITIONS=306} [2024-06-14 11:21:57,745 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-14 11:21:57,746 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 3993 flow [2024-06-14 11:21:57,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:57,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:21:57,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:21:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:21:57,746 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)] === [2024-06-14 11:21:57,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:21:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1228692941, now seen corresponding path program 18 times [2024-06-14 11:21:57,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:21:57,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573338923] [2024-06-14 11:21:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:21:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:21:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:21:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:21:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:21:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573338923] [2024-06-14 11:21:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573338923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:21:59,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:21:59,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:21:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500266219] [2024-06-14 11:21:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:21:59,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:21:59,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:21:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:21:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:21:59,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:21:59,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 306 transitions, 3993 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:21:59,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:21:59,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:21:59,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:21:59,995 INFO L124 PetriNetUnfolderBase]: 879/1558 cut-off events. [2024-06-14 11:21:59,995 INFO L125 PetriNetUnfolderBase]: For 118198/118198 co-relation queries the response was YES. [2024-06-14 11:22:00,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 1558 events. 879/1558 cut-off events. For 118198/118198 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8529 event pairs, 98 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 11446. Up to 1260 conditions per place. [2024-06-14 11:22:00,013 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 238 selfloop transitions, 83 changer transitions 0/323 dead transitions. [2024-06-14 11:22:00,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 323 transitions, 4691 flow [2024-06-14 11:22:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:22:00,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:22:00,014 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 3993 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:22:00,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 323 transitions, 4691 flow [2024-06-14 11:22:00,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 323 transitions, 4503 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-14 11:22:00,676 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 3976 flow [2024-06-14 11:22:00,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3976, PETRI_PLACES=349, PETRI_TRANSITIONS=306} [2024-06-14 11:22:00,676 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-06-14 11:22:00,677 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 3976 flow [2024-06-14 11:22:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:00,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:00,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:00,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:22:00,677 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)] === [2024-06-14 11:22:00,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1221064461, now seen corresponding path program 4 times [2024-06-14 11:22:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367820615] [2024-06-14 11:22:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:02,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:02,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367820615] [2024-06-14 11:22:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367820615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:02,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939644011] [2024-06-14 11:22:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:02,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:02,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:02,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 306 transitions, 3976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:02,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:02,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:02,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:02,867 INFO L124 PetriNetUnfolderBase]: 887/1574 cut-off events. [2024-06-14 11:22:02,867 INFO L125 PetriNetUnfolderBase]: For 124792/124792 co-relation queries the response was YES. [2024-06-14 11:22:02,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11637 conditions, 1574 events. 887/1574 cut-off events. For 124792/124792 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8703 event pairs, 173 based on Foata normal form. 4/1578 useless extension candidates. Maximal degree in co-relation 11478. Up to 1427 conditions per place. [2024-06-14 11:22:02,886 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 275 selfloop transitions, 47 changer transitions 0/324 dead transitions. [2024-06-14 11:22:02,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 324 transitions, 4702 flow [2024-06-14 11:22:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:22:02,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:22:02,887 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 3976 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:22:02,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 324 transitions, 4702 flow [2024-06-14 11:22:03,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 324 transitions, 4520 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:03,570 INFO L231 Difference]: Finished difference. Result has 350 places, 307 transitions, 3916 flow [2024-06-14 11:22:03,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3916, PETRI_PLACES=350, PETRI_TRANSITIONS=307} [2024-06-14 11:22:03,571 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-14 11:22:03,571 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 307 transitions, 3916 flow [2024-06-14 11:22:03,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:03,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:03,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:03,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:22:03,571 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)] === [2024-06-14 11:22:03,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:03,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1445117323, now seen corresponding path program 20 times [2024-06-14 11:22:03,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:03,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831454431] [2024-06-14 11:22:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831454431] [2024-06-14 11:22:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831454431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:04,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:22:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609798027] [2024-06-14 11:22:04,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:22:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:22:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:22:04,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:04,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 307 transitions, 3916 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:04,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:04,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:04,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:05,079 INFO L124 PetriNetUnfolderBase]: 891/1582 cut-off events. [2024-06-14 11:22:05,079 INFO L125 PetriNetUnfolderBase]: For 120333/120333 co-relation queries the response was YES. [2024-06-14 11:22:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11624 conditions, 1582 events. 891/1582 cut-off events. For 120333/120333 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8696 event pairs, 160 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 11464. Up to 1417 conditions per place. [2024-06-14 11:22:05,094 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 273 selfloop transitions, 46 changer transitions 0/321 dead transitions. [2024-06-14 11:22:05,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 321 transitions, 4622 flow [2024-06-14 11:22:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:22:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:22:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:22:05,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367003367003367 [2024-06-14 11:22:05,095 INFO L175 Difference]: Start difference. First operand has 350 places, 307 transitions, 3916 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:22:05,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 321 transitions, 4622 flow [2024-06-14 11:22:05,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 321 transitions, 4510 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:05,790 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 3934 flow [2024-06-14 11:22:05,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3934, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2024-06-14 11:22:05,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-14 11:22:05,791 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 3934 flow [2024-06-14 11:22:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:05,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:05,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:05,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:22:05,791 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)] === [2024-06-14 11:22:05,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash -647776013, now seen corresponding path program 5 times [2024-06-14 11:22:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812354126] [2024-06-14 11:22:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812354126] [2024-06-14 11:22:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812354126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:22:06,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070901499] [2024-06-14 11:22:06,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:06,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:22:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:22:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:22:06,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:06,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 3934 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:06,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:06,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:06,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:07,428 INFO L124 PetriNetUnfolderBase]: 913/1624 cut-off events. [2024-06-14 11:22:07,428 INFO L125 PetriNetUnfolderBase]: For 145941/145941 co-relation queries the response was YES. [2024-06-14 11:22:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 1624 events. 913/1624 cut-off events. For 145941/145941 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9044 event pairs, 309 based on Foata normal form. 4/1628 useless extension candidates. Maximal degree in co-relation 12034. Up to 1524 conditions per place. [2024-06-14 11:22:07,447 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 303 selfloop transitions, 21 changer transitions 0/326 dead transitions. [2024-06-14 11:22:07,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 4850 flow [2024-06-14 11:22:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 11:22:07,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30578512396694213 [2024-06-14 11:22:07,448 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 3934 flow. Second operand 11 states and 111 transitions. [2024-06-14 11:22:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 4850 flow [2024-06-14 11:22:08,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 4730 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:22:08,205 INFO L231 Difference]: Finished difference. Result has 354 places, 310 transitions, 3910 flow [2024-06-14 11:22:08,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3910, PETRI_PLACES=354, PETRI_TRANSITIONS=310} [2024-06-14 11:22:08,205 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 322 predicate places. [2024-06-14 11:22:08,205 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 310 transitions, 3910 flow [2024-06-14 11:22:08,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:08,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:08,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:22:08,206 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)] === [2024-06-14 11:22:08,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1818203761, now seen corresponding path program 21 times [2024-06-14 11:22:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201571927] [2024-06-14 11:22:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:09,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201571927] [2024-06-14 11:22:09,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201571927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:09,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:09,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585695998] [2024-06-14 11:22:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:09,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:09,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:09,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:09,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 310 transitions, 3910 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:09,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:09,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:09,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:09,954 INFO L124 PetriNetUnfolderBase]: 910/1621 cut-off events. [2024-06-14 11:22:09,955 INFO L125 PetriNetUnfolderBase]: For 133240/133240 co-relation queries the response was YES. [2024-06-14 11:22:09,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11905 conditions, 1621 events. 910/1621 cut-off events. For 133240/133240 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9015 event pairs, 167 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 11743. Up to 1454 conditions per place. [2024-06-14 11:22:09,972 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 276 selfloop transitions, 45 changer transitions 0/323 dead transitions. [2024-06-14 11:22:09,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 323 transitions, 4586 flow [2024-06-14 11:22:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:22:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:22:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:22:09,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:22:09,973 INFO L175 Difference]: Start difference. First operand has 354 places, 310 transitions, 3910 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:22:09,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 323 transitions, 4586 flow [2024-06-14 11:22:10,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 323 transitions, 4531 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:22:10,731 INFO L231 Difference]: Finished difference. Result has 356 places, 310 transitions, 3949 flow [2024-06-14 11:22:10,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3949, PETRI_PLACES=356, PETRI_TRANSITIONS=310} [2024-06-14 11:22:10,731 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 324 predicate places. [2024-06-14 11:22:10,731 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 310 transitions, 3949 flow [2024-06-14 11:22:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:10,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:10,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:22:10,732 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)] === [2024-06-14 11:22:10,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1812478309, now seen corresponding path program 19 times [2024-06-14 11:22:10,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:10,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672190293] [2024-06-14 11:22:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:10,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:12,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672190293] [2024-06-14 11:22:12,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672190293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:12,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:12,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:12,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951301912] [2024-06-14 11:22:12,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:12,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:12,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 310 transitions, 3949 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:12,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:12,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:12,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:13,513 INFO L124 PetriNetUnfolderBase]: 926/1645 cut-off events. [2024-06-14 11:22:13,513 INFO L125 PetriNetUnfolderBase]: For 145940/145940 co-relation queries the response was YES. [2024-06-14 11:22:13,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12491 conditions, 1645 events. 926/1645 cut-off events. For 145940/145940 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9149 event pairs, 155 based on Foata normal form. 2/1647 useless extension candidates. Maximal degree in co-relation 12327. Up to 1360 conditions per place. [2024-06-14 11:22:13,529 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 256 selfloop transitions, 76 changer transitions 0/334 dead transitions. [2024-06-14 11:22:13,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 334 transitions, 5027 flow [2024-06-14 11:22:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:22:13,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:22:13,531 INFO L175 Difference]: Start difference. First operand has 356 places, 310 transitions, 3949 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:22:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 334 transitions, 5027 flow [2024-06-14 11:22:14,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 334 transitions, 4826 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:14,324 INFO L231 Difference]: Finished difference. Result has 357 places, 314 transitions, 4080 flow [2024-06-14 11:22:14,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4080, PETRI_PLACES=357, PETRI_TRANSITIONS=314} [2024-06-14 11:22:14,324 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 325 predicate places. [2024-06-14 11:22:14,325 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 314 transitions, 4080 flow [2024-06-14 11:22:14,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:14,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:14,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:14,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:22:14,325 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)] === [2024-06-14 11:22:14,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:14,326 INFO L85 PathProgramCache]: Analyzing trace with hash -648161963, now seen corresponding path program 6 times [2024-06-14 11:22:14,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:14,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105281628] [2024-06-14 11:22:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:14,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105281628] [2024-06-14 11:22:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105281628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:15,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:22:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576158953] [2024-06-14 11:22:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:22:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:22:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:22:15,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:15,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 314 transitions, 4080 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:15,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:15,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:15,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:15,988 INFO L124 PetriNetUnfolderBase]: 934/1661 cut-off events. [2024-06-14 11:22:15,988 INFO L125 PetriNetUnfolderBase]: For 157454/157454 co-relation queries the response was YES. [2024-06-14 11:22:16,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 1661 events. 934/1661 cut-off events. For 157454/157454 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9323 event pairs, 315 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 12397. Up to 1595 conditions per place. [2024-06-14 11:22:16,007 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 306 selfloop transitions, 20 changer transitions 0/328 dead transitions. [2024-06-14 11:22:16,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 328 transitions, 4790 flow [2024-06-14 11:22:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 11:22:16,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-14 11:22:16,008 INFO L175 Difference]: Start difference. First operand has 357 places, 314 transitions, 4080 flow. Second operand 10 states and 103 transitions. [2024-06-14 11:22:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 328 transitions, 4790 flow [2024-06-14 11:22:16,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 328 transitions, 4525 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:16,836 INFO L231 Difference]: Finished difference. Result has 358 places, 315 transitions, 3879 flow [2024-06-14 11:22:16,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3879, PETRI_PLACES=358, PETRI_TRANSITIONS=315} [2024-06-14 11:22:16,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 326 predicate places. [2024-06-14 11:22:16,836 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 315 transitions, 3879 flow [2024-06-14 11:22:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:16,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:16,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:22:16,837 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)] === [2024-06-14 11:22:16,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1188690236, now seen corresponding path program 3 times [2024-06-14 11:22:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281906977] [2024-06-14 11:22:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:19,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:19,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281906977] [2024-06-14 11:22:19,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281906977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:19,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448104716] [2024-06-14 11:22:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:19,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:19,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:19,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:19,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 315 transitions, 3879 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:19,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:19,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:19,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:20,376 INFO L124 PetriNetUnfolderBase]: 932/1660 cut-off events. [2024-06-14 11:22:20,376 INFO L125 PetriNetUnfolderBase]: For 138652/138652 co-relation queries the response was YES. [2024-06-14 11:22:20,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12067 conditions, 1660 events. 932/1660 cut-off events. For 138652/138652 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9348 event pairs, 223 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 11904. Up to 1549 conditions per place. [2024-06-14 11:22:20,396 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 285 selfloop transitions, 41 changer transitions 0/328 dead transitions. [2024-06-14 11:22:20,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 328 transitions, 4575 flow [2024-06-14 11:22:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:22:20,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-14 11:22:20,397 INFO L175 Difference]: Start difference. First operand has 358 places, 315 transitions, 3879 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:22:20,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 328 transitions, 4575 flow [2024-06-14 11:22:21,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 328 transitions, 4523 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:21,275 INFO L231 Difference]: Finished difference. Result has 360 places, 315 transitions, 3917 flow [2024-06-14 11:22:21,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3917, PETRI_PLACES=360, PETRI_TRANSITIONS=315} [2024-06-14 11:22:21,276 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2024-06-14 11:22:21,276 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 315 transitions, 3917 flow [2024-06-14 11:22:21,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:21,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:21,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:22:21,276 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)] === [2024-06-14 11:22:21,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1396494109, now seen corresponding path program 20 times [2024-06-14 11:22:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171856834] [2024-06-14 11:22:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171856834] [2024-06-14 11:22:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171856834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:22,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:22,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:22,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701343928] [2024-06-14 11:22:22,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:23,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:23,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 315 transitions, 3917 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:23,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:23,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:23,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:23,771 INFO L124 PetriNetUnfolderBase]: 938/1668 cut-off events. [2024-06-14 11:22:23,771 INFO L125 PetriNetUnfolderBase]: For 146205/146205 co-relation queries the response was YES. [2024-06-14 11:22:23,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12243 conditions, 1668 events. 938/1668 cut-off events. For 146205/146205 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9358 event pairs, 159 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 12079. Up to 1379 conditions per place. [2024-06-14 11:22:23,790 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 259 selfloop transitions, 75 changer transitions 0/336 dead transitions. [2024-06-14 11:22:23,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 336 transitions, 4897 flow [2024-06-14 11:22:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:23,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:22:23,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:22:23,791 INFO L175 Difference]: Start difference. First operand has 360 places, 315 transitions, 3917 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:22:23,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 336 transitions, 4897 flow [2024-06-14 11:22:24,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 336 transitions, 4702 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-14 11:22:24,706 INFO L231 Difference]: Finished difference. Result has 359 places, 317 transitions, 3950 flow [2024-06-14 11:22:24,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3950, PETRI_PLACES=359, PETRI_TRANSITIONS=317} [2024-06-14 11:22:24,707 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-14 11:22:24,707 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 317 transitions, 3950 flow [2024-06-14 11:22:24,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:24,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:24,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:22:24,707 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)] === [2024-06-14 11:22:24,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash -659203853, now seen corresponding path program 7 times [2024-06-14 11:22:24,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:24,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503983771] [2024-06-14 11:22:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503983771] [2024-06-14 11:22:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503983771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:26,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585005223] [2024-06-14 11:22:26,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:26,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:26,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:26,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:26,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:26,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 317 transitions, 3950 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:26,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:26,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:26,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:26,905 INFO L124 PetriNetUnfolderBase]: 932/1658 cut-off events. [2024-06-14 11:22:26,906 INFO L125 PetriNetUnfolderBase]: For 138021/138021 co-relation queries the response was YES. [2024-06-14 11:22:26,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 1658 events. 932/1658 cut-off events. For 138021/138021 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9315 event pairs, 311 based on Foata normal form. 4/1662 useless extension candidates. Maximal degree in co-relation 11678. Up to 1576 conditions per place. [2024-06-14 11:22:26,926 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 308 selfloop transitions, 21 changer transitions 0/331 dead transitions. [2024-06-14 11:22:26,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 331 transitions, 4650 flow [2024-06-14 11:22:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 11:22:26,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:22:26,927 INFO L175 Difference]: Start difference. First operand has 359 places, 317 transitions, 3950 flow. Second operand 11 states and 110 transitions. [2024-06-14 11:22:26,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 331 transitions, 4650 flow [2024-06-14 11:22:27,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 331 transitions, 4449 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:27,675 INFO L231 Difference]: Finished difference. Result has 362 places, 317 transitions, 3797 flow [2024-06-14 11:22:27,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3797, PETRI_PLACES=362, PETRI_TRANSITIONS=317} [2024-06-14 11:22:27,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-14 11:22:27,675 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 317 transitions, 3797 flow [2024-06-14 11:22:27,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:27,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:27,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:22:27,676 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)] === [2024-06-14 11:22:27,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -753734979, now seen corresponding path program 21 times [2024-06-14 11:22:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572705142] [2024-06-14 11:22:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:29,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:29,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572705142] [2024-06-14 11:22:29,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572705142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:29,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:29,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155747676] [2024-06-14 11:22:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:29,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:29,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:29,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:29,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:29,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 317 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:29,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:29,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:29,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:30,373 INFO L124 PetriNetUnfolderBase]: 938/1670 cut-off events. [2024-06-14 11:22:30,373 INFO L125 PetriNetUnfolderBase]: For 129260/129260 co-relation queries the response was YES. [2024-06-14 11:22:30,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11732 conditions, 1670 events. 938/1670 cut-off events. For 129260/129260 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9364 event pairs, 163 based on Foata normal form. 2/1672 useless extension candidates. Maximal degree in co-relation 11569. Up to 1456 conditions per place. [2024-06-14 11:22:30,392 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 274 selfloop transitions, 60 changer transitions 0/336 dead transitions. [2024-06-14 11:22:30,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 336 transitions, 4589 flow [2024-06-14 11:22:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:22:30,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:22:30,394 INFO L175 Difference]: Start difference. First operand has 362 places, 317 transitions, 3797 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:22:30,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 336 transitions, 4589 flow [2024-06-14 11:22:31,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 336 transitions, 4543 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:31,116 INFO L231 Difference]: Finished difference. Result has 362 places, 319 transitions, 3953 flow [2024-06-14 11:22:31,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3953, PETRI_PLACES=362, PETRI_TRANSITIONS=319} [2024-06-14 11:22:31,116 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-14 11:22:31,116 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 319 transitions, 3953 flow [2024-06-14 11:22:31,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:31,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:31,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:31,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:22:31,117 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)] === [2024-06-14 11:22:31,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1445267425, now seen corresponding path program 22 times [2024-06-14 11:22:31,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:31,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086104215] [2024-06-14 11:22:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:31,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086104215] [2024-06-14 11:22:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086104215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:32,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:32,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:32,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399402717] [2024-06-14 11:22:32,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:32,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:32,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:32,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:32,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:32,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 319 transitions, 3953 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:32,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:32,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:32,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:33,390 INFO L124 PetriNetUnfolderBase]: 944/1678 cut-off events. [2024-06-14 11:22:33,390 INFO L125 PetriNetUnfolderBase]: For 127485/127485 co-relation queries the response was YES. [2024-06-14 11:22:33,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1678 events. 944/1678 cut-off events. For 127485/127485 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9433 event pairs, 170 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 11749. Up to 1492 conditions per place. [2024-06-14 11:22:33,408 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 282 selfloop transitions, 55 changer transitions 0/339 dead transitions. [2024-06-14 11:22:33,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 339 transitions, 4924 flow [2024-06-14 11:22:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:22:33,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:22:33,409 INFO L175 Difference]: Start difference. First operand has 362 places, 319 transitions, 3953 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:22:33,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 339 transitions, 4924 flow [2024-06-14 11:22:34,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 339 transitions, 4693 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:34,311 INFO L231 Difference]: Finished difference. Result has 365 places, 321 transitions, 3905 flow [2024-06-14 11:22:34,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3905, PETRI_PLACES=365, PETRI_TRANSITIONS=321} [2024-06-14 11:22:34,311 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 333 predicate places. [2024-06-14 11:22:34,311 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 321 transitions, 3905 flow [2024-06-14 11:22:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:34,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:34,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:22:34,312 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:22:34,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash -973172473, now seen corresponding path program 23 times [2024-06-14 11:22:34,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:34,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095074396] [2024-06-14 11:22:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095074396] [2024-06-14 11:22:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095074396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:35,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:35,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302861782] [2024-06-14 11:22:35,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:35,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:35,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 321 transitions, 3905 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:35,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:35,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:35,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:36,406 INFO L124 PetriNetUnfolderBase]: 950/1688 cut-off events. [2024-06-14 11:22:36,406 INFO L125 PetriNetUnfolderBase]: For 129362/129362 co-relation queries the response was YES. [2024-06-14 11:22:36,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 1688 events. 950/1688 cut-off events. For 129362/129362 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9493 event pairs, 96 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 11750. Up to 751 conditions per place. [2024-06-14 11:22:36,426 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 195 selfloop transitions, 152 changer transitions 0/349 dead transitions. [2024-06-14 11:22:36,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 349 transitions, 5267 flow [2024-06-14 11:22:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:22:36,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-14 11:22:36,427 INFO L175 Difference]: Start difference. First operand has 365 places, 321 transitions, 3905 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:22:36,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 349 transitions, 5267 flow [2024-06-14 11:22:37,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 349 transitions, 5112 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:37,177 INFO L231 Difference]: Finished difference. Result has 367 places, 327 transitions, 4381 flow [2024-06-14 11:22:37,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4381, PETRI_PLACES=367, PETRI_TRANSITIONS=327} [2024-06-14 11:22:37,177 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-14 11:22:37,177 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 327 transitions, 4381 flow [2024-06-14 11:22:37,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:37,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:37,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:22:37,177 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)] === [2024-06-14 11:22:37,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1214259945, now seen corresponding path program 8 times [2024-06-14 11:22:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168344552] [2024-06-14 11:22:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:38,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:38,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168344552] [2024-06-14 11:22:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168344552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:38,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:38,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:38,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159326761] [2024-06-14 11:22:38,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:38,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:38,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:38,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:38,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:38,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 327 transitions, 4381 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:38,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:38,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:38,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:38,953 INFO L124 PetriNetUnfolderBase]: 951/1691 cut-off events. [2024-06-14 11:22:38,953 INFO L125 PetriNetUnfolderBase]: For 133723/133723 co-relation queries the response was YES. [2024-06-14 11:22:38,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 1691 events. 951/1691 cut-off events. For 133723/133723 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9560 event pairs, 174 based on Foata normal form. 4/1695 useless extension candidates. Maximal degree in co-relation 12004. Up to 1394 conditions per place. [2024-06-14 11:22:38,973 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 260 selfloop transitions, 83 changer transitions 0/345 dead transitions. [2024-06-14 11:22:38,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 345 transitions, 5151 flow [2024-06-14 11:22:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:22:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:22:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:22:38,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:22:38,974 INFO L175 Difference]: Start difference. First operand has 367 places, 327 transitions, 4381 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:22:38,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 345 transitions, 5151 flow [2024-06-14 11:22:39,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 345 transitions, 4918 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-14 11:22:39,820 INFO L231 Difference]: Finished difference. Result has 373 places, 328 transitions, 4344 flow [2024-06-14 11:22:39,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4148, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4344, PETRI_PLACES=373, PETRI_TRANSITIONS=328} [2024-06-14 11:22:39,820 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 341 predicate places. [2024-06-14 11:22:39,820 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 328 transitions, 4344 flow [2024-06-14 11:22:39,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:39,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:39,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:39,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:22:39,821 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)] === [2024-06-14 11:22:39,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash -973179913, now seen corresponding path program 24 times [2024-06-14 11:22:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928243102] [2024-06-14 11:22:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:39,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:40,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928243102] [2024-06-14 11:22:40,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928243102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:40,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:40,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:22:40,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284660822] [2024-06-14 11:22:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:40,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:22:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:22:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:22:41,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:41,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 328 transitions, 4344 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:41,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:41,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:41,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:41,763 INFO L124 PetriNetUnfolderBase]: 957/1701 cut-off events. [2024-06-14 11:22:41,763 INFO L125 PetriNetUnfolderBase]: For 126099/126099 co-relation queries the response was YES. [2024-06-14 11:22:41,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12222 conditions, 1701 events. 957/1701 cut-off events. For 126099/126099 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9581 event pairs, 316 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 12053. Up to 1567 conditions per place. [2024-06-14 11:22:41,783 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 311 selfloop transitions, 32 changer transitions 0/345 dead transitions. [2024-06-14 11:22:41,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 345 transitions, 5326 flow [2024-06-14 11:22:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:22:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:22:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:22:41,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:22:41,784 INFO L175 Difference]: Start difference. First operand has 373 places, 328 transitions, 4344 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:22:41,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 345 transitions, 5326 flow [2024-06-14 11:22:42,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 345 transitions, 5086 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-14 11:22:42,452 INFO L231 Difference]: Finished difference. Result has 375 places, 330 transitions, 4257 flow [2024-06-14 11:22:42,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4257, PETRI_PLACES=375, PETRI_TRANSITIONS=330} [2024-06-14 11:22:42,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2024-06-14 11:22:42,453 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 330 transitions, 4257 flow [2024-06-14 11:22:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:42,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:42,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:42,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:22:42,453 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)] === [2024-06-14 11:22:42,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash -727141679, now seen corresponding path program 1 times [2024-06-14 11:22:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:42,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415675991] [2024-06-14 11:22:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415675991] [2024-06-14 11:22:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415675991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648109470] [2024-06-14 11:22:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:43,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:43,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 330 transitions, 4257 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:43,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:43,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:43,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:44,303 INFO L124 PetriNetUnfolderBase]: 961/1709 cut-off events. [2024-06-14 11:22:44,304 INFO L125 PetriNetUnfolderBase]: For 129202/129202 co-relation queries the response was YES. [2024-06-14 11:22:44,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12142 conditions, 1709 events. 961/1709 cut-off events. For 129202/129202 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9634 event pairs, 192 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 11971. Up to 1565 conditions per place. [2024-06-14 11:22:44,324 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-14 11:22:44,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 355 transitions, 5051 flow [2024-06-14 11:22:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:22:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:22:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-14 11:22:44,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3146853146853147 [2024-06-14 11:22:44,325 INFO L175 Difference]: Start difference. First operand has 375 places, 330 transitions, 4257 flow. Second operand 13 states and 135 transitions. [2024-06-14 11:22:44,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 355 transitions, 5051 flow [2024-06-14 11:22:45,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 355 transitions, 4982 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:22:45,061 INFO L231 Difference]: Finished difference. Result has 380 places, 331 transitions, 4294 flow [2024-06-14 11:22:45,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4294, PETRI_PLACES=380, PETRI_TRANSITIONS=331} [2024-06-14 11:22:45,061 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2024-06-14 11:22:45,061 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 331 transitions, 4294 flow [2024-06-14 11:22:45,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:45,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:45,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:45,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:22:45,062 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)] === [2024-06-14 11:22:45,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:45,062 INFO L85 PathProgramCache]: Analyzing trace with hash -703080909, now seen corresponding path program 2 times [2024-06-14 11:22:45,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:45,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334730650] [2024-06-14 11:22:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:46,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334730650] [2024-06-14 11:22:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334730650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:46,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:46,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:46,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083626120] [2024-06-14 11:22:46,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:46,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:46,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:46,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:46,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 331 transitions, 4294 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:46,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:46,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:46,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:47,117 INFO L124 PetriNetUnfolderBase]: 965/1717 cut-off events. [2024-06-14 11:22:47,118 INFO L125 PetriNetUnfolderBase]: For 130742/130742 co-relation queries the response was YES. [2024-06-14 11:22:47,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1717 events. 965/1717 cut-off events. For 130742/130742 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9682 event pairs, 207 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 12063. Up to 1585 conditions per place. [2024-06-14 11:22:47,139 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 310 selfloop transitions, 41 changer transitions 0/353 dead transitions. [2024-06-14 11:22:47,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 353 transitions, 5082 flow [2024-06-14 11:22:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:22:47,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 11:22:47,140 INFO L175 Difference]: Start difference. First operand has 380 places, 331 transitions, 4294 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:22:47,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 353 transitions, 5082 flow [2024-06-14 11:22:47,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 353 transitions, 4986 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-14 11:22:47,891 INFO L231 Difference]: Finished difference. Result has 381 places, 332 transitions, 4315 flow [2024-06-14 11:22:47,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4198, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4315, PETRI_PLACES=381, PETRI_TRANSITIONS=332} [2024-06-14 11:22:47,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-14 11:22:47,891 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 332 transitions, 4315 flow [2024-06-14 11:22:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:47,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:47,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:47,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:22:47,892 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)] === [2024-06-14 11:22:47,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash -702364809, now seen corresponding path program 3 times [2024-06-14 11:22:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117190031] [2024-06-14 11:22:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:49,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:49,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117190031] [2024-06-14 11:22:49,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117190031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:49,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:49,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457585015] [2024-06-14 11:22:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:49,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:49,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:49,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 332 transitions, 4315 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:49,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:49,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:49,773 INFO L124 PetriNetUnfolderBase]: 969/1725 cut-off events. [2024-06-14 11:22:49,773 INFO L125 PetriNetUnfolderBase]: For 134693/134693 co-relation queries the response was YES. [2024-06-14 11:22:49,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 1725 events. 969/1725 cut-off events. For 134693/134693 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9735 event pairs, 211 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 12131. Up to 1596 conditions per place. [2024-06-14 11:22:49,795 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 38 changer transitions 0/354 dead transitions. [2024-06-14 11:22:49,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 354 transitions, 5105 flow [2024-06-14 11:22:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 11:22:49,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 11:22:49,796 INFO L175 Difference]: Start difference. First operand has 381 places, 332 transitions, 4315 flow. Second operand 12 states and 126 transitions. [2024-06-14 11:22:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 354 transitions, 5105 flow [2024-06-14 11:22:50,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 354 transitions, 5000 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:50,575 INFO L231 Difference]: Finished difference. Result has 383 places, 333 transitions, 4322 flow [2024-06-14 11:22:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4322, PETRI_PLACES=383, PETRI_TRANSITIONS=333} [2024-06-14 11:22:50,576 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-14 11:22:50,576 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 333 transitions, 4322 flow [2024-06-14 11:22:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:50,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:50,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:50,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:22:50,576 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)] === [2024-06-14 11:22:50,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:50,577 INFO L85 PathProgramCache]: Analyzing trace with hash -706775799, now seen corresponding path program 4 times [2024-06-14 11:22:50,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:50,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040792945] [2024-06-14 11:22:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040792945] [2024-06-14 11:22:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040792945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489319126] [2024-06-14 11:22:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:51,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:51,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 333 transitions, 4322 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:51,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:51,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:51,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:52,552 INFO L124 PetriNetUnfolderBase]: 973/1733 cut-off events. [2024-06-14 11:22:52,553 INFO L125 PetriNetUnfolderBase]: For 137465/137465 co-relation queries the response was YES. [2024-06-14 11:22:52,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12363 conditions, 1733 events. 973/1733 cut-off events. For 137465/137465 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9805 event pairs, 215 based on Foata normal form. 2/1735 useless extension candidates. Maximal degree in co-relation 12189. Up to 1607 conditions per place. [2024-06-14 11:22:52,575 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 35 changer transitions 0/355 dead transitions. [2024-06-14 11:22:52,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 5114 flow [2024-06-14 11:22:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:22:52,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-14 11:22:52,576 INFO L175 Difference]: Start difference. First operand has 383 places, 333 transitions, 4322 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:22:52,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 5114 flow [2024-06-14 11:22:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 355 transitions, 5012 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:53,273 INFO L231 Difference]: Finished difference. Result has 385 places, 334 transitions, 4328 flow [2024-06-14 11:22:53,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4328, PETRI_PLACES=385, PETRI_TRANSITIONS=334} [2024-06-14 11:22:53,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 353 predicate places. [2024-06-14 11:22:53,273 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 334 transitions, 4328 flow [2024-06-14 11:22:53,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:53,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:53,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:53,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:22:53,274 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)] === [2024-06-14 11:22:53,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash -602229369, now seen corresponding path program 5 times [2024-06-14 11:22:53,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:53,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989214029] [2024-06-14 11:22:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:54,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989214029] [2024-06-14 11:22:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989214029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:54,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:54,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808315358] [2024-06-14 11:22:54,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:54,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:54,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 334 transitions, 4328 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:55,126 INFO L124 PetriNetUnfolderBase]: 977/1741 cut-off events. [2024-06-14 11:22:55,126 INFO L125 PetriNetUnfolderBase]: For 140179/140179 co-relation queries the response was YES. [2024-06-14 11:22:55,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 1741 events. 977/1741 cut-off events. For 140179/140179 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9881 event pairs, 175 based on Foata normal form. 2/1743 useless extension candidates. Maximal degree in co-relation 12247. Up to 1522 conditions per place. [2024-06-14 11:22:55,147 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 42 changer transitions 0/357 dead transitions. [2024-06-14 11:22:55,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 357 transitions, 5126 flow [2024-06-14 11:22:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-14 11:22:55,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2024-06-14 11:22:55,148 INFO L175 Difference]: Start difference. First operand has 385 places, 334 transitions, 4328 flow. Second operand 12 states and 123 transitions. [2024-06-14 11:22:55,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 357 transitions, 5126 flow [2024-06-14 11:22:55,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 357 transitions, 5028 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:55,902 INFO L231 Difference]: Finished difference. Result has 387 places, 335 transitions, 4354 flow [2024-06-14 11:22:55,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4354, PETRI_PLACES=387, PETRI_TRANSITIONS=335} [2024-06-14 11:22:55,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 355 predicate places. [2024-06-14 11:22:55,903 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 335 transitions, 4354 flow [2024-06-14 11:22:55,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:55,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:55,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:55,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:22:55,904 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)] === [2024-06-14 11:22:55,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 140731243, now seen corresponding path program 1 times [2024-06-14 11:22:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:55,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747755938] [2024-06-14 11:22:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:22:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:22:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:22:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747755938] [2024-06-14 11:22:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747755938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:22:57,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:22:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:22:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357129366] [2024-06-14 11:22:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:22:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:22:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:22:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:22:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:22:57,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:22:57,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 335 transitions, 4354 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:57,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:22:57,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:22:57,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:22:58,211 INFO L124 PetriNetUnfolderBase]: 980/1746 cut-off events. [2024-06-14 11:22:58,211 INFO L125 PetriNetUnfolderBase]: For 138456/138456 co-relation queries the response was YES. [2024-06-14 11:22:58,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 1746 events. 980/1746 cut-off events. For 138456/138456 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9925 event pairs, 214 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 12327. Up to 1617 conditions per place. [2024-06-14 11:22:58,230 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 314 selfloop transitions, 42 changer transitions 0/358 dead transitions. [2024-06-14 11:22:58,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 358 transitions, 5195 flow [2024-06-14 11:22:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:22:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:22:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 11:22:58,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 11:22:58,231 INFO L175 Difference]: Start difference. First operand has 387 places, 335 transitions, 4354 flow. Second operand 12 states and 128 transitions. [2024-06-14 11:22:58,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 358 transitions, 5195 flow [2024-06-14 11:22:59,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 358 transitions, 5081 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 11:22:59,078 INFO L231 Difference]: Finished difference. Result has 389 places, 337 transitions, 4405 flow [2024-06-14 11:22:59,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4405, PETRI_PLACES=389, PETRI_TRANSITIONS=337} [2024-06-14 11:22:59,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-14 11:22:59,079 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 337 transitions, 4405 flow [2024-06-14 11:22:59,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:22:59,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:22:59,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:22:59,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:22:59,080 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)] === [2024-06-14 11:22:59,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:22:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2030089007, now seen corresponding path program 1 times [2024-06-14 11:22:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:22:59,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336991789] [2024-06-14 11:22:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:22:59,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:22:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:01,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336991789] [2024-06-14 11:23:01,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336991789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:01,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:01,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593435733] [2024-06-14 11:23:01,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:01,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:01,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 337 transitions, 4405 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:01,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:01,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:01,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:02,237 INFO L124 PetriNetUnfolderBase]: 986/1756 cut-off events. [2024-06-14 11:23:02,237 INFO L125 PetriNetUnfolderBase]: For 144452/144452 co-relation queries the response was YES. [2024-06-14 11:23:02,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12576 conditions, 1756 events. 986/1756 cut-off events. For 144452/144452 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9974 event pairs, 214 based on Foata normal form. 2/1758 useless extension candidates. Maximal degree in co-relation 12399. Up to 1631 conditions per place. [2024-06-14 11:23:02,267 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 323 selfloop transitions, 37 changer transitions 0/362 dead transitions. [2024-06-14 11:23:02,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 5259 flow [2024-06-14 11:23:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:23:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:23:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-14 11:23:02,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-14 11:23:02,268 INFO L175 Difference]: Start difference. First operand has 389 places, 337 transitions, 4405 flow. Second operand 13 states and 137 transitions. [2024-06-14 11:23:02,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 5259 flow [2024-06-14 11:23:03,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 362 transitions, 5135 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-14 11:23:03,244 INFO L231 Difference]: Finished difference. Result has 392 places, 339 transitions, 4432 flow [2024-06-14 11:23:03,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4432, PETRI_PLACES=392, PETRI_TRANSITIONS=339} [2024-06-14 11:23:03,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 360 predicate places. [2024-06-14 11:23:03,245 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 339 transitions, 4432 flow [2024-06-14 11:23:03,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:03,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:03,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:03,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:23:03,245 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)] === [2024-06-14 11:23:03,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:03,246 INFO L85 PathProgramCache]: Analyzing trace with hash 235561245, now seen corresponding path program 6 times [2024-06-14 11:23:03,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:03,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32870303] [2024-06-14 11:23:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:03,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:04,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32870303] [2024-06-14 11:23:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32870303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:04,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:04,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752936208] [2024-06-14 11:23:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:04,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:04,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:04,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:04,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 339 transitions, 4432 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:04,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:04,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:05,219 INFO L124 PetriNetUnfolderBase]: 990/1764 cut-off events. [2024-06-14 11:23:05,219 INFO L125 PetriNetUnfolderBase]: For 148695/148695 co-relation queries the response was YES. [2024-06-14 11:23:05,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 1764 events. 990/1764 cut-off events. For 148695/148695 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10040 event pairs, 186 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 12476. Up to 1650 conditions per place. [2024-06-14 11:23:05,241 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 325 selfloop transitions, 33 changer transitions 0/360 dead transitions. [2024-06-14 11:23:05,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 360 transitions, 5242 flow [2024-06-14 11:23:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:23:05,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-14 11:23:05,242 INFO L175 Difference]: Start difference. First operand has 392 places, 339 transitions, 4432 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:23:05,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 360 transitions, 5242 flow [2024-06-14 11:23:06,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 360 transitions, 5113 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-14 11:23:06,146 INFO L231 Difference]: Finished difference. Result has 392 places, 340 transitions, 4412 flow [2024-06-14 11:23:06,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4412, PETRI_PLACES=392, PETRI_TRANSITIONS=340} [2024-06-14 11:23:06,147 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 360 predicate places. [2024-06-14 11:23:06,147 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 340 transitions, 4412 flow [2024-06-14 11:23:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:06,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:06,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:23:06,147 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)] === [2024-06-14 11:23:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1482787111, now seen corresponding path program 7 times [2024-06-14 11:23:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937844663] [2024-06-14 11:23:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:07,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:07,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937844663] [2024-06-14 11:23:07,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937844663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:07,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:07,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:07,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930240208] [2024-06-14 11:23:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:07,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:07,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:07,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:07,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 340 transitions, 4412 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:07,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:07,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:07,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:08,080 INFO L124 PetriNetUnfolderBase]: 994/1772 cut-off events. [2024-06-14 11:23:08,080 INFO L125 PetriNetUnfolderBase]: For 151974/151974 co-relation queries the response was YES. [2024-06-14 11:23:08,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 1772 events. 994/1772 cut-off events. For 151974/151974 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10117 event pairs, 186 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 12517. Up to 1661 conditions per place. [2024-06-14 11:23:08,104 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 329 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-06-14 11:23:08,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 361 transitions, 5224 flow [2024-06-14 11:23:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:23:08,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-14 11:23:08,105 INFO L175 Difference]: Start difference. First operand has 392 places, 340 transitions, 4412 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:23:08,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 361 transitions, 5224 flow [2024-06-14 11:23:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 361 transitions, 5127 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:09,031 INFO L231 Difference]: Finished difference. Result has 394 places, 341 transitions, 4419 flow [2024-06-14 11:23:09,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4419, PETRI_PLACES=394, PETRI_TRANSITIONS=341} [2024-06-14 11:23:09,032 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2024-06-14 11:23:09,032 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 341 transitions, 4419 flow [2024-06-14 11:23:09,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:09,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:09,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:09,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:23:09,032 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)] === [2024-06-14 11:23:09,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1482902431, now seen corresponding path program 8 times [2024-06-14 11:23:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752971902] [2024-06-14 11:23:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:09,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752971902] [2024-06-14 11:23:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752971902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:10,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:10,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91837427] [2024-06-14 11:23:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:10,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:10,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:10,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:10,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 341 transitions, 4419 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:10,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:10,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:10,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:10,907 INFO L124 PetriNetUnfolderBase]: 998/1780 cut-off events. [2024-06-14 11:23:10,908 INFO L125 PetriNetUnfolderBase]: For 154993/154993 co-relation queries the response was YES. [2024-06-14 11:23:10,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 1780 events. 998/1780 cut-off events. For 154993/154993 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10163 event pairs, 186 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 12575. Up to 1672 conditions per place. [2024-06-14 11:23:10,938 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 333 selfloop transitions, 27 changer transitions 0/362 dead transitions. [2024-06-14 11:23:10,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 362 transitions, 5233 flow [2024-06-14 11:23:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:23:10,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:23:10,939 INFO L175 Difference]: Start difference. First operand has 394 places, 341 transitions, 4419 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:23:10,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 362 transitions, 5233 flow [2024-06-14 11:23:11,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 5139 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:11,944 INFO L231 Difference]: Finished difference. Result has 396 places, 342 transitions, 4425 flow [2024-06-14 11:23:11,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4425, PETRI_PLACES=396, PETRI_TRANSITIONS=342} [2024-06-14 11:23:11,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 364 predicate places. [2024-06-14 11:23:11,945 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 342 transitions, 4425 flow [2024-06-14 11:23:11,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:11,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:11,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:11,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:23:11,945 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)] === [2024-06-14 11:23:11,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash 177348825, now seen corresponding path program 9 times [2024-06-14 11:23:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:11,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83610496] [2024-06-14 11:23:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83610496] [2024-06-14 11:23:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83610496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232047764] [2024-06-14 11:23:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:13,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:13,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:13,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 342 transitions, 4425 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:13,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:13,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:13,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:13,738 INFO L124 PetriNetUnfolderBase]: 1002/1788 cut-off events. [2024-06-14 11:23:13,738 INFO L125 PetriNetUnfolderBase]: For 158202/158202 co-relation queries the response was YES. [2024-06-14 11:23:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12814 conditions, 1788 events. 1002/1788 cut-off events. For 158202/158202 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10223 event pairs, 182 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 12633. Up to 1662 conditions per place. [2024-06-14 11:23:13,760 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 335 selfloop transitions, 29 changer transitions 0/366 dead transitions. [2024-06-14 11:23:13,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 366 transitions, 5257 flow [2024-06-14 11:23:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 11:23:13,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 11:23:13,761 INFO L175 Difference]: Start difference. First operand has 396 places, 342 transitions, 4425 flow. Second operand 12 states and 128 transitions. [2024-06-14 11:23:13,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 366 transitions, 5257 flow [2024-06-14 11:23:14,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 366 transitions, 5167 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:14,665 INFO L231 Difference]: Finished difference. Result has 399 places, 343 transitions, 4441 flow [2024-06-14 11:23:14,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4441, PETRI_PLACES=399, PETRI_TRANSITIONS=343} [2024-06-14 11:23:14,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 367 predicate places. [2024-06-14 11:23:14,666 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 343 transitions, 4441 flow [2024-06-14 11:23:14,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:14,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:14,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:14,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:23:14,667 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)] === [2024-06-14 11:23:14,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1371959755, now seen corresponding path program 2 times [2024-06-14 11:23:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320994544] [2024-06-14 11:23:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:16,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:16,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320994544] [2024-06-14 11:23:16,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320994544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:16,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:16,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353083816] [2024-06-14 11:23:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:16,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:16,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:16,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 343 transitions, 4441 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:16,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:16,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:16,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:16,989 INFO L124 PetriNetUnfolderBase]: 1000/1785 cut-off events. [2024-06-14 11:23:16,989 INFO L125 PetriNetUnfolderBase]: For 149541/149541 co-relation queries the response was YES. [2024-06-14 11:23:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 1785 events. 1000/1785 cut-off events. For 149541/149541 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10221 event pairs, 190 based on Foata normal form. 1/1786 useless extension candidates. Maximal degree in co-relation 12461. Up to 1668 conditions per place. [2024-06-14 11:23:17,011 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 325 selfloop transitions, 36 changer transitions 0/363 dead transitions. [2024-06-14 11:23:17,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 363 transitions, 5223 flow [2024-06-14 11:23:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:17,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:17,013 INFO L175 Difference]: Start difference. First operand has 399 places, 343 transitions, 4441 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:17,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 363 transitions, 5223 flow [2024-06-14 11:23:17,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 363 transitions, 5097 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-14 11:23:17,919 INFO L231 Difference]: Finished difference. Result has 400 places, 343 transitions, 4395 flow [2024-06-14 11:23:17,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4395, PETRI_PLACES=400, PETRI_TRANSITIONS=343} [2024-06-14 11:23:17,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-14 11:23:17,919 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 343 transitions, 4395 flow [2024-06-14 11:23:17,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:17,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:17,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:17,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:23:17,920 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)] === [2024-06-14 11:23:17,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1367311367, now seen corresponding path program 2 times [2024-06-14 11:23:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045422467] [2024-06-14 11:23:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045422467] [2024-06-14 11:23:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045422467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:20,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221781512] [2024-06-14 11:23:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:20,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:20,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:20,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:20,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 343 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:20,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:20,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:20,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:21,435 INFO L124 PetriNetUnfolderBase]: 1006/1795 cut-off events. [2024-06-14 11:23:21,435 INFO L125 PetriNetUnfolderBase]: For 157011/157011 co-relation queries the response was YES. [2024-06-14 11:23:21,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12693 conditions, 1795 events. 1006/1795 cut-off events. For 157011/157011 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10311 event pairs, 190 based on Foata normal form. 2/1797 useless extension candidates. Maximal degree in co-relation 12510. Up to 1682 conditions per place. [2024-06-14 11:23:21,458 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 334 selfloop transitions, 31 changer transitions 0/367 dead transitions. [2024-06-14 11:23:21,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 367 transitions, 5263 flow [2024-06-14 11:23:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:23:21,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 11:23:21,459 INFO L175 Difference]: Start difference. First operand has 400 places, 343 transitions, 4395 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:23:21,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 367 transitions, 5263 flow [2024-06-14 11:23:22,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 367 transitions, 5118 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 11:23:22,450 INFO L231 Difference]: Finished difference. Result has 401 places, 345 transitions, 4393 flow [2024-06-14 11:23:22,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4393, PETRI_PLACES=401, PETRI_TRANSITIONS=345} [2024-06-14 11:23:22,451 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 369 predicate places. [2024-06-14 11:23:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 345 transitions, 4393 flow [2024-06-14 11:23:22,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:22,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:22,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:23:22,452 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)] === [2024-06-14 11:23:22,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash 680802995, now seen corresponding path program 10 times [2024-06-14 11:23:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704172699] [2024-06-14 11:23:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704172699] [2024-06-14 11:23:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704172699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:23,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:23,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528699080] [2024-06-14 11:23:23,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:23,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:23,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:23,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 345 transitions, 4393 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:23,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:23,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:24,427 INFO L124 PetriNetUnfolderBase]: 1010/1803 cut-off events. [2024-06-14 11:23:24,427 INFO L125 PetriNetUnfolderBase]: For 161007/161007 co-relation queries the response was YES. [2024-06-14 11:23:24,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12756 conditions, 1803 events. 1010/1803 cut-off events. For 161007/161007 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10336 event pairs, 176 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 12572. Up to 1630 conditions per place. [2024-06-14 11:23:24,448 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 50 changer transitions 0/365 dead transitions. [2024-06-14 11:23:24,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 365 transitions, 5217 flow [2024-06-14 11:23:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:23:24,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:23:24,449 INFO L175 Difference]: Start difference. First operand has 401 places, 345 transitions, 4393 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:23:24,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 365 transitions, 5217 flow [2024-06-14 11:23:25,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 365 transitions, 5096 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-14 11:23:25,280 INFO L231 Difference]: Finished difference. Result has 402 places, 346 transitions, 4422 flow [2024-06-14 11:23:25,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4422, PETRI_PLACES=402, PETRI_TRANSITIONS=346} [2024-06-14 11:23:25,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 370 predicate places. [2024-06-14 11:23:25,280 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 346 transitions, 4422 flow [2024-06-14 11:23:25,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:25,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:25,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:25,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:23:25,281 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)] === [2024-06-14 11:23:25,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash 680798345, now seen corresponding path program 11 times [2024-06-14 11:23:25,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:25,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347159318] [2024-06-14 11:23:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:25,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:26,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347159318] [2024-06-14 11:23:26,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347159318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:26,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:26,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:26,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571806987] [2024-06-14 11:23:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:26,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:26,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:26,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:26,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 346 transitions, 4422 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:26,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:26,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:27,223 INFO L124 PetriNetUnfolderBase]: 1014/1811 cut-off events. [2024-06-14 11:23:27,223 INFO L125 PetriNetUnfolderBase]: For 164598/164598 co-relation queries the response was YES. [2024-06-14 11:23:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 1811 events. 1014/1811 cut-off events. For 164598/164598 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10453 event pairs, 174 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 12682. Up to 1638 conditions per place. [2024-06-14 11:23:27,246 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 315 selfloop transitions, 49 changer transitions 0/366 dead transitions. [2024-06-14 11:23:27,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 366 transitions, 5248 flow [2024-06-14 11:23:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:23:27,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:23:27,247 INFO L175 Difference]: Start difference. First operand has 402 places, 346 transitions, 4422 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:23:27,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 366 transitions, 5248 flow [2024-06-14 11:23:28,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 366 transitions, 5108 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:28,176 INFO L231 Difference]: Finished difference. Result has 404 places, 347 transitions, 4432 flow [2024-06-14 11:23:28,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4432, PETRI_PLACES=404, PETRI_TRANSITIONS=347} [2024-06-14 11:23:28,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-14 11:23:28,177 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 347 transitions, 4432 flow [2024-06-14 11:23:28,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:28,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:28,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:28,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:23:28,177 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)] === [2024-06-14 11:23:28,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash 857934515, now seen corresponding path program 12 times [2024-06-14 11:23:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:28,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781331083] [2024-06-14 11:23:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:28,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:29,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:29,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781331083] [2024-06-14 11:23:29,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781331083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:29,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:29,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233554715] [2024-06-14 11:23:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:29,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:29,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:29,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 347 transitions, 4432 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:29,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:29,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:29,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:30,238 INFO L124 PetriNetUnfolderBase]: 1018/1819 cut-off events. [2024-06-14 11:23:30,238 INFO L125 PetriNetUnfolderBase]: For 167636/167636 co-relation queries the response was YES. [2024-06-14 11:23:30,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12927 conditions, 1819 events. 1018/1819 cut-off events. For 167636/167636 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10513 event pairs, 162 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 12741. Up to 1556 conditions per place. [2024-06-14 11:23:30,259 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 292 selfloop transitions, 76 changer transitions 0/370 dead transitions. [2024-06-14 11:23:30,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 370 transitions, 5286 flow [2024-06-14 11:23:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:23:30,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:23:30,260 INFO L175 Difference]: Start difference. First operand has 404 places, 347 transitions, 4432 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:23:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 370 transitions, 5286 flow [2024-06-14 11:23:31,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 370 transitions, 5146 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:31,263 INFO L231 Difference]: Finished difference. Result has 406 places, 348 transitions, 4498 flow [2024-06-14 11:23:31,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4498, PETRI_PLACES=406, PETRI_TRANSITIONS=348} [2024-06-14 11:23:31,264 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-14 11:23:31,264 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 348 transitions, 4498 flow [2024-06-14 11:23:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:31,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:31,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:23:31,264 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)] === [2024-06-14 11:23:31,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash 680683025, now seen corresponding path program 13 times [2024-06-14 11:23:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000611208] [2024-06-14 11:23:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:32,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:32,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000611208] [2024-06-14 11:23:32,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000611208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:32,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:32,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:32,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312636211] [2024-06-14 11:23:32,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:32,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:32,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:32,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:32,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:32,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 348 transitions, 4498 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:32,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:32,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:32,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:33,057 INFO L124 PetriNetUnfolderBase]: 1022/1827 cut-off events. [2024-06-14 11:23:33,057 INFO L125 PetriNetUnfolderBase]: For 170904/170904 co-relation queries the response was YES. [2024-06-14 11:23:33,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13063 conditions, 1827 events. 1022/1827 cut-off events. For 170904/170904 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10581 event pairs, 174 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 12876. Up to 1654 conditions per place. [2024-06-14 11:23:33,081 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 48 changer transitions 0/368 dead transitions. [2024-06-14 11:23:33,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 368 transitions, 5330 flow [2024-06-14 11:23:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:23:33,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:23:33,082 INFO L175 Difference]: Start difference. First operand has 406 places, 348 transitions, 4498 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:23:33,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 368 transitions, 5330 flow [2024-06-14 11:23:34,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 368 transitions, 5134 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:34,125 INFO L231 Difference]: Finished difference. Result has 408 places, 349 transitions, 4454 flow [2024-06-14 11:23:34,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4454, PETRI_PLACES=408, PETRI_TRANSITIONS=349} [2024-06-14 11:23:34,126 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-14 11:23:34,126 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 349 transitions, 4454 flow [2024-06-14 11:23:34,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:34,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:34,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:34,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:23:34,126 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)] === [2024-06-14 11:23:34,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash 685451569, now seen corresponding path program 3 times [2024-06-14 11:23:34,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:34,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656986397] [2024-06-14 11:23:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:34,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:35,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:35,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656986397] [2024-06-14 11:23:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656986397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:35,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:35,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:35,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117201542] [2024-06-14 11:23:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:35,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:36,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:36,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 349 transitions, 4454 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:36,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:36,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:36,888 INFO L124 PetriNetUnfolderBase]: 1028/1837 cut-off events. [2024-06-14 11:23:36,889 INFO L125 PetriNetUnfolderBase]: For 173443/173443 co-relation queries the response was YES. [2024-06-14 11:23:36,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 1837 events. 1028/1837 cut-off events. For 173443/173443 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10637 event pairs, 178 based on Foata normal form. 2/1839 useless extension candidates. Maximal degree in co-relation 12863. Up to 1654 conditions per place. [2024-06-14 11:23:36,913 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 317 selfloop transitions, 53 changer transitions 0/372 dead transitions. [2024-06-14 11:23:36,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 372 transitions, 5332 flow [2024-06-14 11:23:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 11:23:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-14 11:23:36,914 INFO L175 Difference]: Start difference. First operand has 408 places, 349 transitions, 4454 flow. Second operand 12 states and 133 transitions. [2024-06-14 11:23:36,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 372 transitions, 5332 flow [2024-06-14 11:23:37,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 372 transitions, 5190 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:37,976 INFO L231 Difference]: Finished difference. Result has 411 places, 351 transitions, 4503 flow [2024-06-14 11:23:37,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4503, PETRI_PLACES=411, PETRI_TRANSITIONS=351} [2024-06-14 11:23:37,976 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-14 11:23:37,976 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 351 transitions, 4503 flow [2024-06-14 11:23:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:37,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:37,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:37,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:23:37,977 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)] === [2024-06-14 11:23:37,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:37,977 INFO L85 PathProgramCache]: Analyzing trace with hash 857941459, now seen corresponding path program 4 times [2024-06-14 11:23:37,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:37,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282164202] [2024-06-14 11:23:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:37,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:39,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:39,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282164202] [2024-06-14 11:23:39,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282164202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:39,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:39,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:39,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069001041] [2024-06-14 11:23:39,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:39,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:39,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:39,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 351 transitions, 4503 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:39,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:39,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:39,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:40,758 INFO L124 PetriNetUnfolderBase]: 1054/1879 cut-off events. [2024-06-14 11:23:40,758 INFO L125 PetriNetUnfolderBase]: For 202627/202627 co-relation queries the response was YES. [2024-06-14 11:23:40,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 1879 events. 1054/1879 cut-off events. For 202627/202627 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10887 event pairs, 165 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 13763. Up to 1484 conditions per place. [2024-06-14 11:23:40,851 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 286 selfloop transitions, 93 changer transitions 0/381 dead transitions. [2024-06-14 11:23:40,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 381 transitions, 6025 flow [2024-06-14 11:23:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:23:40,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 11:23:40,852 INFO L175 Difference]: Start difference. First operand has 411 places, 351 transitions, 4503 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:23:40,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 381 transitions, 6025 flow [2024-06-14 11:23:41,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 381 transitions, 5856 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-14 11:23:41,909 INFO L231 Difference]: Finished difference. Result has 412 places, 357 transitions, 4770 flow [2024-06-14 11:23:41,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4770, PETRI_PLACES=412, PETRI_TRANSITIONS=357} [2024-06-14 11:23:41,909 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2024-06-14 11:23:41,909 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 357 transitions, 4770 flow [2024-06-14 11:23:41,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:41,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:41,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:41,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:23:41,910 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)] === [2024-06-14 11:23:41,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash 858172099, now seen corresponding path program 5 times [2024-06-14 11:23:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032090423] [2024-06-14 11:23:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032090423] [2024-06-14 11:23:43,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032090423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:43,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:43,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227267611] [2024-06-14 11:23:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:43,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:44,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:44,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 357 transitions, 4770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:44,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:44,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:44,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:44,986 INFO L124 PetriNetUnfolderBase]: 1050/1873 cut-off events. [2024-06-14 11:23:44,986 INFO L125 PetriNetUnfolderBase]: For 193275/193275 co-relation queries the response was YES. [2024-06-14 11:23:45,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13733 conditions, 1873 events. 1050/1873 cut-off events. For 193275/193275 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10852 event pairs, 162 based on Foata normal form. 2/1875 useless extension candidates. Maximal degree in co-relation 13543. Up to 1481 conditions per place. [2024-06-14 11:23:45,012 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 280 selfloop transitions, 99 changer transitions 0/381 dead transitions. [2024-06-14 11:23:45,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 381 transitions, 5834 flow [2024-06-14 11:23:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:23:45,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 11:23:45,013 INFO L175 Difference]: Start difference. First operand has 412 places, 357 transitions, 4770 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:23:45,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 381 transitions, 5834 flow [2024-06-14 11:23:46,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 381 transitions, 5602 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-14 11:23:46,099 INFO L231 Difference]: Finished difference. Result has 417 places, 357 transitions, 4745 flow [2024-06-14 11:23:46,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4745, PETRI_PLACES=417, PETRI_TRANSITIONS=357} [2024-06-14 11:23:46,099 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 385 predicate places. [2024-06-14 11:23:46,099 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 357 transitions, 4745 flow [2024-06-14 11:23:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:46,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:46,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:46,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:23:46,100 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)] === [2024-06-14 11:23:46,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash -886183227, now seen corresponding path program 1 times [2024-06-14 11:23:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:46,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593355496] [2024-06-14 11:23:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:47,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593355496] [2024-06-14 11:23:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593355496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:47,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626420982] [2024-06-14 11:23:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:48,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:48,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 357 transitions, 4745 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:48,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:48,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:48,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:48,839 INFO L124 PetriNetUnfolderBase]: 1054/1881 cut-off events. [2024-06-14 11:23:48,839 INFO L125 PetriNetUnfolderBase]: For 194620/194620 co-relation queries the response was YES. [2024-06-14 11:23:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13825 conditions, 1881 events. 1054/1881 cut-off events. For 194620/194620 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10968 event pairs, 272 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 13633. Up to 1748 conditions per place. [2024-06-14 11:23:48,864 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 332 selfloop transitions, 44 changer transitions 0/378 dead transitions. [2024-06-14 11:23:48,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 378 transitions, 5589 flow [2024-06-14 11:23:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:23:48,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 11:23:48,865 INFO L175 Difference]: Start difference. First operand has 417 places, 357 transitions, 4745 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:23:48,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 378 transitions, 5589 flow [2024-06-14 11:23:49,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 378 transitions, 5415 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:49,927 INFO L231 Difference]: Finished difference. Result has 420 places, 358 transitions, 4693 flow [2024-06-14 11:23:49,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4693, PETRI_PLACES=420, PETRI_TRANSITIONS=358} [2024-06-14 11:23:49,928 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 388 predicate places. [2024-06-14 11:23:49,928 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 358 transitions, 4693 flow [2024-06-14 11:23:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:49,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:49,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:49,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:23:49,929 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)] === [2024-06-14 11:23:49,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash 851505425, now seen corresponding path program 14 times [2024-06-14 11:23:49,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:49,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243133962] [2024-06-14 11:23:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:51,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:51,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243133962] [2024-06-14 11:23:51,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243133962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:51,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:51,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273382140] [2024-06-14 11:23:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:51,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:51,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:51,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 358 transitions, 4693 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:51,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:51,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:51,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:52,205 INFO L124 PetriNetUnfolderBase]: 1058/1889 cut-off events. [2024-06-14 11:23:52,205 INFO L125 PetriNetUnfolderBase]: For 198791/198791 co-relation queries the response was YES. [2024-06-14 11:23:52,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1889 events. 1058/1889 cut-off events. For 198791/198791 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10993 event pairs, 168 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 13657. Up to 1675 conditions per place. [2024-06-14 11:23:52,231 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2024-06-14 11:23:52,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 380 transitions, 5565 flow [2024-06-14 11:23:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:23:52,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 11:23:52,233 INFO L175 Difference]: Start difference. First operand has 420 places, 358 transitions, 4693 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:23:52,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 380 transitions, 5565 flow [2024-06-14 11:23:53,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 380 transitions, 5459 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 11:23:53,437 INFO L231 Difference]: Finished difference. Result has 421 places, 359 transitions, 4769 flow [2024-06-14 11:23:53,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4769, PETRI_PLACES=421, PETRI_TRANSITIONS=359} [2024-06-14 11:23:53,437 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 389 predicate places. [2024-06-14 11:23:53,437 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 359 transitions, 4769 flow [2024-06-14 11:23:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:53,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:53,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:53,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:23:53,438 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)] === [2024-06-14 11:23:53,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash 851500775, now seen corresponding path program 15 times [2024-06-14 11:23:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:53,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941733971] [2024-06-14 11:23:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:53,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:54,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:54,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941733971] [2024-06-14 11:23:54,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941733971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:54,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:54,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529841268] [2024-06-14 11:23:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:54,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:54,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:54,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 359 transitions, 4769 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:54,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:54,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:54,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:55,469 INFO L124 PetriNetUnfolderBase]: 1062/1897 cut-off events. [2024-06-14 11:23:55,469 INFO L125 PetriNetUnfolderBase]: For 203290/203290 co-relation queries the response was YES. [2024-06-14 11:23:55,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14025 conditions, 1897 events. 1062/1897 cut-off events. For 203290/203290 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11073 event pairs, 166 based on Foata normal form. 2/1899 useless extension candidates. Maximal degree in co-relation 13831. Up to 1683 conditions per place. [2024-06-14 11:23:55,495 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 318 selfloop transitions, 61 changer transitions 0/381 dead transitions. [2024-06-14 11:23:55,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 381 transitions, 5643 flow [2024-06-14 11:23:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:23:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:23:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:23:55,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:23:55,496 INFO L175 Difference]: Start difference. First operand has 421 places, 359 transitions, 4769 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:23:55,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 381 transitions, 5643 flow [2024-06-14 11:23:56,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 381 transitions, 5471 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:23:56,611 INFO L231 Difference]: Finished difference. Result has 423 places, 360 transitions, 4779 flow [2024-06-14 11:23:56,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4597, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4779, PETRI_PLACES=423, PETRI_TRANSITIONS=360} [2024-06-14 11:23:56,612 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2024-06-14 11:23:56,612 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 360 transitions, 4779 flow [2024-06-14 11:23:56,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:56,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:23:56,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:23:56,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:23:56,612 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)] === [2024-06-14 11:23:56,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:23:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2075412913, now seen corresponding path program 6 times [2024-06-14 11:23:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:23:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513057133] [2024-06-14 11:23:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:23:56,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:23:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:23:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:23:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:23:58,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513057133] [2024-06-14 11:23:58,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513057133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:23:58,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:23:58,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:23:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045899340] [2024-06-14 11:23:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:23:58,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:23:58,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:23:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:23:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:23:58,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:23:58,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 360 transitions, 4779 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:23:58,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:23:58,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:23:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:23:59,629 INFO L124 PetriNetUnfolderBase]: 1063/1899 cut-off events. [2024-06-14 11:23:59,630 INFO L125 PetriNetUnfolderBase]: For 199013/199013 co-relation queries the response was YES. [2024-06-14 11:23:59,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13899 conditions, 1899 events. 1063/1899 cut-off events. For 199013/199013 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11071 event pairs, 168 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 13704. Up to 1675 conditions per place. [2024-06-14 11:23:59,656 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 318 selfloop transitions, 65 changer transitions 0/385 dead transitions. [2024-06-14 11:23:59,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 385 transitions, 5679 flow [2024-06-14 11:23:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:23:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:23:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 11:23:59,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:23:59,657 INFO L175 Difference]: Start difference. First operand has 423 places, 360 transitions, 4779 flow. Second operand 12 states and 135 transitions. [2024-06-14 11:23:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 385 transitions, 5679 flow [2024-06-14 11:24:00,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 385 transitions, 5507 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:00,795 INFO L231 Difference]: Finished difference. Result has 426 places, 362 transitions, 4808 flow [2024-06-14 11:24:00,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4808, PETRI_PLACES=426, PETRI_TRANSITIONS=362} [2024-06-14 11:24:00,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-14 11:24:00,795 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 362 transitions, 4808 flow [2024-06-14 11:24:00,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:00,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:00,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:00,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:24:00,796 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)] === [2024-06-14 11:24:00,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 999720737, now seen corresponding path program 16 times [2024-06-14 11:24:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310072841] [2024-06-14 11:24:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:00,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:02,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:02,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310072841] [2024-06-14 11:24:02,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310072841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:02,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:02,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74223396] [2024-06-14 11:24:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:02,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:02,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:02,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:02,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:02,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:02,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 362 transitions, 4808 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:02,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:02,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:02,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:02,888 INFO L124 PetriNetUnfolderBase]: 1067/1907 cut-off events. [2024-06-14 11:24:02,889 INFO L125 PetriNetUnfolderBase]: For 202724/202724 co-relation queries the response was YES. [2024-06-14 11:24:02,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13972 conditions, 1907 events. 1067/1907 cut-off events. For 202724/202724 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11144 event pairs, 237 based on Foata normal form. 2/1909 useless extension candidates. Maximal degree in co-relation 13776. Up to 1715 conditions per place. [2024-06-14 11:24:02,911 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 320 selfloop transitions, 58 changer transitions 0/380 dead transitions. [2024-06-14 11:24:02,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 380 transitions, 5666 flow [2024-06-14 11:24:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:24:02,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-14 11:24:02,912 INFO L175 Difference]: Start difference. First operand has 426 places, 362 transitions, 4808 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:24:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 380 transitions, 5666 flow [2024-06-14 11:24:03,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 380 transitions, 5493 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-14 11:24:03,978 INFO L231 Difference]: Finished difference. Result has 426 places, 363 transitions, 4820 flow [2024-06-14 11:24:03,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4820, PETRI_PLACES=426, PETRI_TRANSITIONS=363} [2024-06-14 11:24:03,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-14 11:24:03,978 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 363 transitions, 4820 flow [2024-06-14 11:24:03,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:03,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:03,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:03,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:24:03,978 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)] === [2024-06-14 11:24:03,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1763042821, now seen corresponding path program 17 times [2024-06-14 11:24:03,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:03,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261296872] [2024-06-14 11:24:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:03,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:05,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:05,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261296872] [2024-06-14 11:24:05,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261296872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:05,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:05,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963678065] [2024-06-14 11:24:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:05,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:05,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:05,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:05,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 363 transitions, 4820 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:05,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:05,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:05,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:06,049 INFO L124 PetriNetUnfolderBase]: 1071/1915 cut-off events. [2024-06-14 11:24:06,049 INFO L125 PetriNetUnfolderBase]: For 207187/207187 co-relation queries the response was YES. [2024-06-14 11:24:06,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14081 conditions, 1915 events. 1071/1915 cut-off events. For 207187/207187 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11235 event pairs, 235 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 13884. Up to 1732 conditions per place. [2024-06-14 11:24:06,075 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 330 selfloop transitions, 49 changer transitions 0/381 dead transitions. [2024-06-14 11:24:06,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 381 transitions, 5680 flow [2024-06-14 11:24:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:24:06,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:24:06,076 INFO L175 Difference]: Start difference. First operand has 426 places, 363 transitions, 4820 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:24:06,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 381 transitions, 5680 flow [2024-06-14 11:24:07,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 381 transitions, 5511 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:07,301 INFO L231 Difference]: Finished difference. Result has 428 places, 364 transitions, 4817 flow [2024-06-14 11:24:07,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4817, PETRI_PLACES=428, PETRI_TRANSITIONS=364} [2024-06-14 11:24:07,301 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-14 11:24:07,301 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 364 transitions, 4817 flow [2024-06-14 11:24:07,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:07,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:07,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:24:07,302 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)] === [2024-06-14 11:24:07,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 999600767, now seen corresponding path program 18 times [2024-06-14 11:24:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:07,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344347762] [2024-06-14 11:24:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:07,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344347762] [2024-06-14 11:24:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344347762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:08,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:08,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845395241] [2024-06-14 11:24:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:08,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 364 transitions, 4817 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:09,194 INFO L124 PetriNetUnfolderBase]: 1075/1923 cut-off events. [2024-06-14 11:24:09,194 INFO L125 PetriNetUnfolderBase]: For 203529/203529 co-relation queries the response was YES. [2024-06-14 11:24:09,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14072 conditions, 1923 events. 1075/1923 cut-off events. For 203529/203529 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11305 event pairs, 233 based on Foata normal form. 2/1925 useless extension candidates. Maximal degree in co-relation 13874. Up to 1749 conditions per place. [2024-06-14 11:24:09,217 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 340 selfloop transitions, 40 changer transitions 0/382 dead transitions. [2024-06-14 11:24:09,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 382 transitions, 5675 flow [2024-06-14 11:24:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:09,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:24:09,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-14 11:24:09,218 INFO L175 Difference]: Start difference. First operand has 428 places, 364 transitions, 4817 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:24:09,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 382 transitions, 5675 flow [2024-06-14 11:24:10,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 382 transitions, 5523 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:10,516 INFO L231 Difference]: Finished difference. Result has 430 places, 365 transitions, 4811 flow [2024-06-14 11:24:10,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4811, PETRI_PLACES=430, PETRI_TRANSITIONS=365} [2024-06-14 11:24:10,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-14 11:24:10,516 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 365 transitions, 4811 flow [2024-06-14 11:24:10,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:10,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:10,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:10,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:24:10,517 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)] === [2024-06-14 11:24:10,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash -102906885, now seen corresponding path program 19 times [2024-06-14 11:24:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:10,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421010962] [2024-06-14 11:24:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421010962] [2024-06-14 11:24:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421010962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:11,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:11,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182670315] [2024-06-14 11:24:11,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:11,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:11,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:11,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:11,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:11,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 365 transitions, 4811 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:12,422 INFO L124 PetriNetUnfolderBase]: 1079/1931 cut-off events. [2024-06-14 11:24:12,422 INFO L125 PetriNetUnfolderBase]: For 200068/200068 co-relation queries the response was YES. [2024-06-14 11:24:12,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 1931 events. 1079/1931 cut-off events. For 200068/200068 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11353 event pairs, 161 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 13864. Up to 1640 conditions per place. [2024-06-14 11:24:12,448 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 316 selfloop transitions, 65 changer transitions 0/383 dead transitions. [2024-06-14 11:24:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 383 transitions, 5667 flow [2024-06-14 11:24:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:24:12,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:24:12,449 INFO L175 Difference]: Start difference. First operand has 430 places, 365 transitions, 4811 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:24:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 383 transitions, 5667 flow [2024-06-14 11:24:13,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 383 transitions, 5535 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:13,495 INFO L231 Difference]: Finished difference. Result has 433 places, 366 transitions, 4875 flow [2024-06-14 11:24:13,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4683, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4875, PETRI_PLACES=433, PETRI_TRANSITIONS=366} [2024-06-14 11:24:13,495 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-14 11:24:13,495 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 366 transitions, 4875 flow [2024-06-14 11:24:13,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:13,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:13,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:24:13,496 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)] === [2024-06-14 11:24:13,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1629535037, now seen corresponding path program 3 times [2024-06-14 11:24:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178005094] [2024-06-14 11:24:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178005094] [2024-06-14 11:24:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178005094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:15,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794758772] [2024-06-14 11:24:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:15,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:15,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:15,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 366 transitions, 4875 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:15,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:15,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:15,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:16,062 INFO L124 PetriNetUnfolderBase]: 1077/1928 cut-off events. [2024-06-14 11:24:16,063 INFO L125 PetriNetUnfolderBase]: For 182013/182013 co-relation queries the response was YES. [2024-06-14 11:24:16,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 1928 events. 1077/1928 cut-off events. For 182013/182013 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11355 event pairs, 239 based on Foata normal form. 1/1929 useless extension candidates. Maximal degree in co-relation 13669. Up to 1727 conditions per place. [2024-06-14 11:24:16,089 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 67 changer transitions 0/383 dead transitions. [2024-06-14 11:24:16,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 383 transitions, 5685 flow [2024-06-14 11:24:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:24:16,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:24:16,090 INFO L175 Difference]: Start difference. First operand has 433 places, 366 transitions, 4875 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:24:16,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 383 transitions, 5685 flow [2024-06-14 11:24:17,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 383 transitions, 5481 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:17,209 INFO L231 Difference]: Finished difference. Result has 434 places, 366 transitions, 4825 flow [2024-06-14 11:24:17,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4825, PETRI_PLACES=434, PETRI_TRANSITIONS=366} [2024-06-14 11:24:17,210 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-14 11:24:17,210 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 366 transitions, 4825 flow [2024-06-14 11:24:17,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:17,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:17,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:24:17,210 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)] === [2024-06-14 11:24:17,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1647567077, now seen corresponding path program 7 times [2024-06-14 11:24:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43628312] [2024-06-14 11:24:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:18,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43628312] [2024-06-14 11:24:18,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43628312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:18,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:18,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:18,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572919273] [2024-06-14 11:24:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:18,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:18,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:18,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:19,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:19,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 366 transitions, 4825 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:19,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:19,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:19,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:19,936 INFO L124 PetriNetUnfolderBase]: 1083/1938 cut-off events. [2024-06-14 11:24:19,937 INFO L125 PetriNetUnfolderBase]: For 180166/180166 co-relation queries the response was YES. [2024-06-14 11:24:19,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1938 events. 1083/1938 cut-off events. For 180166/180166 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11433 event pairs, 241 based on Foata normal form. 2/1940 useless extension candidates. Maximal degree in co-relation 13649. Up to 1749 conditions per place. [2024-06-14 11:24:19,959 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 333 selfloop transitions, 52 changer transitions 0/387 dead transitions. [2024-06-14 11:24:19,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 387 transitions, 5733 flow [2024-06-14 11:24:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:24:19,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:24:19,960 INFO L175 Difference]: Start difference. First operand has 434 places, 366 transitions, 4825 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:24:19,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 387 transitions, 5733 flow [2024-06-14 11:24:21,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 387 transitions, 5475 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-14 11:24:21,006 INFO L231 Difference]: Finished difference. Result has 433 places, 368 transitions, 4770 flow [2024-06-14 11:24:21,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4770, PETRI_PLACES=433, PETRI_TRANSITIONS=368} [2024-06-14 11:24:21,006 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-14 11:24:21,006 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 368 transitions, 4770 flow [2024-06-14 11:24:21,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:21,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:21,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:21,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:24:21,006 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)] === [2024-06-14 11:24:21,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 406910361, now seen corresponding path program 20 times [2024-06-14 11:24:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:21,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592058897] [2024-06-14 11:24:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:22,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:22,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592058897] [2024-06-14 11:24:22,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592058897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:22,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:22,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083481468] [2024-06-14 11:24:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:22,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 368 transitions, 4770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:23,075 INFO L124 PetriNetUnfolderBase]: 1087/1946 cut-off events. [2024-06-14 11:24:23,075 INFO L125 PetriNetUnfolderBase]: For 179141/179141 co-relation queries the response was YES. [2024-06-14 11:24:23,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13807 conditions, 1946 events. 1087/1946 cut-off events. For 179141/179141 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11479 event pairs, 165 based on Foata normal form. 2/1948 useless extension candidates. Maximal degree in co-relation 13607. Up to 1680 conditions per place. [2024-06-14 11:24:23,102 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 308 selfloop transitions, 77 changer transitions 0/387 dead transitions. [2024-06-14 11:24:23,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 387 transitions, 5640 flow [2024-06-14 11:24:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:24:23,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:24:23,103 INFO L175 Difference]: Start difference. First operand has 433 places, 368 transitions, 4770 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:24:23,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 387 transitions, 5640 flow [2024-06-14 11:24:24,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 387 transitions, 5483 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:24,073 INFO L231 Difference]: Finished difference. Result has 434 places, 369 transitions, 4821 flow [2024-06-14 11:24:24,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4613, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=434, PETRI_TRANSITIONS=369} [2024-06-14 11:24:24,073 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-14 11:24:24,073 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 369 transitions, 4821 flow [2024-06-14 11:24:24,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:24,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:24,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:24,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:24:24,074 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)] === [2024-06-14 11:24:24,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 406905711, now seen corresponding path program 21 times [2024-06-14 11:24:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979240599] [2024-06-14 11:24:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:24,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979240599] [2024-06-14 11:24:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979240599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:25,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723954939] [2024-06-14 11:24:25,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:25,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:25,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:25,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 369 transitions, 4821 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:25,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:25,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:25,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:26,193 INFO L124 PetriNetUnfolderBase]: 1091/1954 cut-off events. [2024-06-14 11:24:26,194 INFO L125 PetriNetUnfolderBase]: For 182753/182753 co-relation queries the response was YES. [2024-06-14 11:24:26,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 1954 events. 1091/1954 cut-off events. For 182753/182753 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11562 event pairs, 161 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 13746. Up to 1688 conditions per place. [2024-06-14 11:24:26,220 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 311 selfloop transitions, 75 changer transitions 0/388 dead transitions. [2024-06-14 11:24:26,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 388 transitions, 5693 flow [2024-06-14 11:24:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:24:26,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:24:26,221 INFO L175 Difference]: Start difference. First operand has 434 places, 369 transitions, 4821 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:24:26,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 388 transitions, 5693 flow [2024-06-14 11:24:27,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 388 transitions, 5495 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:27,384 INFO L231 Difference]: Finished difference. Result has 436 places, 370 transitions, 4829 flow [2024-06-14 11:24:27,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4829, PETRI_PLACES=436, PETRI_TRANSITIONS=370} [2024-06-14 11:24:27,385 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-14 11:24:27,385 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 370 transitions, 4829 flow [2024-06-14 11:24:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:27,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:27,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:27,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:24:27,386 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)] === [2024-06-14 11:24:27,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2094572285, now seen corresponding path program 22 times [2024-06-14 11:24:27,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:27,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832407561] [2024-06-14 11:24:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832407561] [2024-06-14 11:24:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832407561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:28,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:28,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:28,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833588367] [2024-06-14 11:24:28,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:28,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:28,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:28,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:28,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 370 transitions, 4829 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:28,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:28,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:28,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:29,480 INFO L124 PetriNetUnfolderBase]: 1095/1962 cut-off events. [2024-06-14 11:24:29,480 INFO L125 PetriNetUnfolderBase]: For 182693/182693 co-relation queries the response was YES. [2024-06-14 11:24:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13976 conditions, 1962 events. 1095/1962 cut-off events. For 182693/182693 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11619 event pairs, 197 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 13774. Up to 1767 conditions per place. [2024-06-14 11:24:29,501 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 328 selfloop transitions, 57 changer transitions 0/387 dead transitions. [2024-06-14 11:24:29,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 387 transitions, 5691 flow [2024-06-14 11:24:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:24:29,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:24:29,509 INFO L175 Difference]: Start difference. First operand has 436 places, 370 transitions, 4829 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:24:29,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 387 transitions, 5691 flow [2024-06-14 11:24:30,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 387 transitions, 5497 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:30,753 INFO L231 Difference]: Finished difference. Result has 438 places, 371 transitions, 4805 flow [2024-06-14 11:24:30,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4805, PETRI_PLACES=438, PETRI_TRANSITIONS=371} [2024-06-14 11:24:30,753 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-14 11:24:30,754 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 371 transitions, 4805 flow [2024-06-14 11:24:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:30,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:30,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:30,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:24:30,754 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)] === [2024-06-14 11:24:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2094576935, now seen corresponding path program 23 times [2024-06-14 11:24:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482202802] [2024-06-14 11:24:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:31,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:31,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482202802] [2024-06-14 11:24:31,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482202802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:31,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:31,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:31,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761592013] [2024-06-14 11:24:31,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:31,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:31,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:31,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:31,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 371 transitions, 4805 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:31,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:31,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:31,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:32,501 INFO L124 PetriNetUnfolderBase]: 1099/1970 cut-off events. [2024-06-14 11:24:32,501 INFO L125 PetriNetUnfolderBase]: For 182565/182565 co-relation queries the response was YES. [2024-06-14 11:24:32,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 1970 events. 1099/1970 cut-off events. For 182565/182565 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11700 event pairs, 195 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 13760. Up to 1775 conditions per place. [2024-06-14 11:24:32,527 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 331 selfloop transitions, 55 changer transitions 0/388 dead transitions. [2024-06-14 11:24:32,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 388 transitions, 5667 flow [2024-06-14 11:24:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:24:32,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:24:32,528 INFO L175 Difference]: Start difference. First operand has 438 places, 371 transitions, 4805 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:24:32,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 388 transitions, 5667 flow [2024-06-14 11:24:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 388 transitions, 5509 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:33,724 INFO L231 Difference]: Finished difference. Result has 440 places, 372 transitions, 4813 flow [2024-06-14 11:24:33,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4813, PETRI_PLACES=440, PETRI_TRANSITIONS=372} [2024-06-14 11:24:33,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-14 11:24:33,725 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 372 transitions, 4813 flow [2024-06-14 11:24:33,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:33,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:33,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:33,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:24:33,726 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)] === [2024-06-14 11:24:33,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2094692255, now seen corresponding path program 24 times [2024-06-14 11:24:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20946736] [2024-06-14 11:24:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:33,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20946736] [2024-06-14 11:24:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20946736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:34,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114829402] [2024-06-14 11:24:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:34,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:34,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:34,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:34,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:34,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 372 transitions, 4813 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:34,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:34,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:35,611 INFO L124 PetriNetUnfolderBase]: 1103/1978 cut-off events. [2024-06-14 11:24:35,611 INFO L125 PetriNetUnfolderBase]: For 182713/182713 co-relation queries the response was YES. [2024-06-14 11:24:35,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13992 conditions, 1978 events. 1103/1978 cut-off events. For 182713/182713 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11743 event pairs, 191 based on Foata normal form. 2/1980 useless extension candidates. Maximal degree in co-relation 13788. Up to 1783 conditions per place. [2024-06-14 11:24:35,634 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 334 selfloop transitions, 53 changer transitions 0/389 dead transitions. [2024-06-14 11:24:35,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 389 transitions, 5675 flow [2024-06-14 11:24:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:24:35,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:24:35,635 INFO L175 Difference]: Start difference. First operand has 440 places, 372 transitions, 4813 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:24:35,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 389 transitions, 5675 flow [2024-06-14 11:24:36,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 389 transitions, 5521 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:36,840 INFO L231 Difference]: Finished difference. Result has 442 places, 373 transitions, 4821 flow [2024-06-14 11:24:36,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4821, PETRI_PLACES=442, PETRI_TRANSITIONS=373} [2024-06-14 11:24:36,841 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-14 11:24:36,841 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 373 transitions, 4821 flow [2024-06-14 11:24:36,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:36,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:36,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:36,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:24:36,842 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)] === [2024-06-14 11:24:36,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1923689931, now seen corresponding path program 8 times [2024-06-14 11:24:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930082290] [2024-06-14 11:24:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:38,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930082290] [2024-06-14 11:24:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930082290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:38,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:38,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:24:38,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852813823] [2024-06-14 11:24:38,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:38,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:24:38,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:24:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:24:39,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:39,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 373 transitions, 4821 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:39,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:39,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:39,941 INFO L124 PetriNetUnfolderBase]: 1109/1988 cut-off events. [2024-06-14 11:24:39,942 INFO L125 PetriNetUnfolderBase]: For 182622/182622 co-relation queries the response was YES. [2024-06-14 11:24:39,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14051 conditions, 1988 events. 1109/1988 cut-off events. For 182622/182622 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11851 event pairs, 169 based on Foata normal form. 2/1990 useless extension candidates. Maximal degree in co-relation 13846. Up to 1702 conditions per place. [2024-06-14 11:24:39,968 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 310 selfloop transitions, 83 changer transitions 0/395 dead transitions. [2024-06-14 11:24:39,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 395 transitions, 5757 flow [2024-06-14 11:24:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:24:39,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:24:39,969 INFO L175 Difference]: Start difference. First operand has 442 places, 373 transitions, 4821 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:24:39,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 395 transitions, 5757 flow [2024-06-14 11:24:41,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 395 transitions, 5609 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:41,235 INFO L231 Difference]: Finished difference. Result has 445 places, 375 transitions, 4939 flow [2024-06-14 11:24:41,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4939, PETRI_PLACES=445, PETRI_TRANSITIONS=375} [2024-06-14 11:24:41,235 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 413 predicate places. [2024-06-14 11:24:41,235 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 375 transitions, 4939 flow [2024-06-14 11:24:41,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:41,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:41,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:41,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:24:41,236 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)] === [2024-06-14 11:24:41,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1917194811, now seen corresponding path program 9 times [2024-06-14 11:24:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034565240] [2024-06-14 11:24:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:43,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034565240] [2024-06-14 11:24:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034565240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:43,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750970118] [2024-06-14 11:24:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:43,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:43,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:43,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 375 transitions, 4939 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:43,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:44,704 INFO L124 PetriNetUnfolderBase]: 1131/2024 cut-off events. [2024-06-14 11:24:44,704 INFO L125 PetriNetUnfolderBase]: For 197540/197540 co-relation queries the response was YES. [2024-06-14 11:24:44,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14697 conditions, 2024 events. 1131/2024 cut-off events. For 197540/197540 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12059 event pairs, 164 based on Foata normal form. 2/2026 useless extension candidates. Maximal degree in co-relation 14491. Up to 1435 conditions per place. [2024-06-14 11:24:44,733 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 244 selfloop transitions, 159 changer transitions 0/405 dead transitions. [2024-06-14 11:24:44,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 405 transitions, 6257 flow [2024-06-14 11:24:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:24:44,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 11:24:44,734 INFO L175 Difference]: Start difference. First operand has 445 places, 375 transitions, 4939 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:24:44,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 405 transitions, 6257 flow [2024-06-14 11:24:46,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 405 transitions, 6023 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:46,104 INFO L231 Difference]: Finished difference. Result has 447 places, 381 transitions, 5239 flow [2024-06-14 11:24:46,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5239, PETRI_PLACES=447, PETRI_TRANSITIONS=381} [2024-06-14 11:24:46,105 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 415 predicate places. [2024-06-14 11:24:46,105 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 381 transitions, 5239 flow [2024-06-14 11:24:46,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:46,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:46,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:46,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:24:46,106 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)] === [2024-06-14 11:24:46,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash 559482103, now seen corresponding path program 10 times [2024-06-14 11:24:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816775925] [2024-06-14 11:24:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:48,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:48,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816775925] [2024-06-14 11:24:48,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816775925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:48,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:48,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:48,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179829892] [2024-06-14 11:24:48,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:48,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:48,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:48,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:48,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 381 transitions, 5239 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:48,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:48,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:49,834 INFO L124 PetriNetUnfolderBase]: 1137/2034 cut-off events. [2024-06-14 11:24:49,834 INFO L125 PetriNetUnfolderBase]: For 201140/201140 co-relation queries the response was YES. [2024-06-14 11:24:49,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15025 conditions, 2034 events. 1137/2034 cut-off events. For 201140/201140 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12113 event pairs, 204 based on Foata normal form. 2/2036 useless extension candidates. Maximal degree in co-relation 14818. Up to 1819 conditions per place. [2024-06-14 11:24:49,865 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 63 changer transitions 0/401 dead transitions. [2024-06-14 11:24:49,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 401 transitions, 6185 flow [2024-06-14 11:24:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:24:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:24:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:24:49,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:24:49,866 INFO L175 Difference]: Start difference. First operand has 447 places, 381 transitions, 5239 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:24:49,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 401 transitions, 6185 flow [2024-06-14 11:24:51,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 401 transitions, 5787 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:51,117 INFO L231 Difference]: Finished difference. Result has 450 places, 383 transitions, 5075 flow [2024-06-14 11:24:51,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5075, PETRI_PLACES=450, PETRI_TRANSITIONS=383} [2024-06-14 11:24:51,118 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-14 11:24:51,118 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 383 transitions, 5075 flow [2024-06-14 11:24:51,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:51,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:51,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:51,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:24:51,118 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)] === [2024-06-14 11:24:51,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash 731965049, now seen corresponding path program 25 times [2024-06-14 11:24:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:51,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101642588] [2024-06-14 11:24:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:52,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101642588] [2024-06-14 11:24:52,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101642588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:52,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:52,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:52,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700467085] [2024-06-14 11:24:52,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:52,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:52,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:52,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:52,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:52,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:52,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 383 transitions, 5075 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:52,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:52,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:52,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:53,418 INFO L124 PetriNetUnfolderBase]: 1141/2042 cut-off events. [2024-06-14 11:24:53,418 INFO L125 PetriNetUnfolderBase]: For 202952/202952 co-relation queries the response was YES. [2024-06-14 11:24:53,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14794 conditions, 2042 events. 1141/2042 cut-off events. For 202952/202952 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12194 event pairs, 168 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 14586. Up to 1689 conditions per place. [2024-06-14 11:24:53,447 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 300 selfloop transitions, 101 changer transitions 0/403 dead transitions. [2024-06-14 11:24:53,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 403 transitions, 5983 flow [2024-06-14 11:24:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:24:53,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:24:53,448 INFO L175 Difference]: Start difference. First operand has 450 places, 383 transitions, 5075 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:24:53,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 403 transitions, 5983 flow [2024-06-14 11:24:54,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 403 transitions, 5815 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:24:54,866 INFO L231 Difference]: Finished difference. Result has 451 places, 384 transitions, 5163 flow [2024-06-14 11:24:54,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5163, PETRI_PLACES=451, PETRI_TRANSITIONS=384} [2024-06-14 11:24:54,866 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 419 predicate places. [2024-06-14 11:24:54,866 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 384 transitions, 5163 flow [2024-06-14 11:24:54,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:54,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:54,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:54,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:24:54,867 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)] === [2024-06-14 11:24:54,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -157869091, now seen corresponding path program 2 times [2024-06-14 11:24:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320962478] [2024-06-14 11:24:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:24:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:24:56,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:24:56,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320962478] [2024-06-14 11:24:56,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320962478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:24:56,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:24:56,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:24:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904829079] [2024-06-14 11:24:56,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:24:56,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:24:56,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:24:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:24:56,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:24:56,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:24:56,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 384 transitions, 5163 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:56,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:24:56,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:24:56,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:24:57,475 INFO L124 PetriNetUnfolderBase]: 1145/2050 cut-off events. [2024-06-14 11:24:57,475 INFO L125 PetriNetUnfolderBase]: For 206839/206839 co-relation queries the response was YES. [2024-06-14 11:24:57,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14956 conditions, 2050 events. 1145/2050 cut-off events. For 206839/206839 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12311 event pairs, 287 based on Foata normal form. 2/2052 useless extension candidates. Maximal degree in co-relation 14747. Up to 1851 conditions per place. [2024-06-14 11:24:57,505 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 341 selfloop transitions, 58 changer transitions 0/401 dead transitions. [2024-06-14 11:24:57,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 401 transitions, 6041 flow [2024-06-14 11:24:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:24:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:24:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:24:57,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:24:57,506 INFO L175 Difference]: Start difference. First operand has 451 places, 384 transitions, 5163 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:24:57,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 401 transitions, 6041 flow [2024-06-14 11:24:58,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 401 transitions, 5797 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:24:58,880 INFO L231 Difference]: Finished difference. Result has 453 places, 385 transitions, 5075 flow [2024-06-14 11:24:58,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4919, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5075, PETRI_PLACES=453, PETRI_TRANSITIONS=385} [2024-06-14 11:24:58,881 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 421 predicate places. [2024-06-14 11:24:58,881 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 385 transitions, 5075 flow [2024-06-14 11:24:58,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:24:58,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:24:58,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:24:58,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:24:58,881 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)] === [2024-06-14 11:24:58,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:24:58,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1374099977, now seen corresponding path program 11 times [2024-06-14 11:24:58,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:24:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631729710] [2024-06-14 11:24:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:24:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:24:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:00,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:00,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631729710] [2024-06-14 11:25:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631729710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:00,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822524085] [2024-06-14 11:25:00,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:00,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:00,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:00,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:00,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 385 transitions, 5075 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:00,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:00,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:00,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:01,819 INFO L124 PetriNetUnfolderBase]: 1156/2068 cut-off events. [2024-06-14 11:25:01,819 INFO L125 PetriNetUnfolderBase]: For 213222/213222 co-relation queries the response was YES. [2024-06-14 11:25:01,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15123 conditions, 2068 events. 1156/2068 cut-off events. For 213222/213222 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12394 event pairs, 169 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 14913. Up to 1469 conditions per place. [2024-06-14 11:25:01,849 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 267 selfloop transitions, 143 changer transitions 0/412 dead transitions. [2024-06-14 11:25:01,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 412 transitions, 6583 flow [2024-06-14 11:25:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:25:01,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:25:01,850 INFO L175 Difference]: Start difference. First operand has 453 places, 385 transitions, 5075 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:25:01,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 412 transitions, 6583 flow [2024-06-14 11:25:03,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 412 transitions, 6437 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:03,276 INFO L231 Difference]: Finished difference. Result has 456 places, 389 transitions, 5379 flow [2024-06-14 11:25:03,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5379, PETRI_PLACES=456, PETRI_TRANSITIONS=389} [2024-06-14 11:25:03,276 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 424 predicate places. [2024-06-14 11:25:03,276 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 389 transitions, 5379 flow [2024-06-14 11:25:03,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:03,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:03,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:25:03,277 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)] === [2024-06-14 11:25:03,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1945785423, now seen corresponding path program 12 times [2024-06-14 11:25:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91731954] [2024-06-14 11:25:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91731954] [2024-06-14 11:25:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91731954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552511890] [2024-06-14 11:25:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:05,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:05,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 389 transitions, 5379 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:05,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:05,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:05,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:06,601 INFO L124 PetriNetUnfolderBase]: 1152/2062 cut-off events. [2024-06-14 11:25:06,602 INFO L125 PetriNetUnfolderBase]: For 196687/196687 co-relation queries the response was YES. [2024-06-14 11:25:06,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15000 conditions, 2062 events. 1152/2062 cut-off events. For 196687/196687 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12339 event pairs, 168 based on Foata normal form. 2/2064 useless extension candidates. Maximal degree in co-relation 14789. Up to 1466 conditions per place. [2024-06-14 11:25:06,630 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 245 selfloop transitions, 165 changer transitions 0/412 dead transitions. [2024-06-14 11:25:06,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 412 transitions, 6507 flow [2024-06-14 11:25:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:25:06,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:25:06,631 INFO L175 Difference]: Start difference. First operand has 456 places, 389 transitions, 5379 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:25:06,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 412 transitions, 6507 flow [2024-06-14 11:25:07,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 412 transitions, 6209 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-14 11:25:07,873 INFO L231 Difference]: Finished difference. Result has 460 places, 389 transitions, 5419 flow [2024-06-14 11:25:07,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5081, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5419, PETRI_PLACES=460, PETRI_TRANSITIONS=389} [2024-06-14 11:25:07,874 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 428 predicate places. [2024-06-14 11:25:07,874 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 389 transitions, 5419 flow [2024-06-14 11:25:07,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:07,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:07,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:07,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:25:07,874 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)] === [2024-06-14 11:25:07,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash 449695171, now seen corresponding path program 26 times [2024-06-14 11:25:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936870045] [2024-06-14 11:25:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:07,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936870045] [2024-06-14 11:25:08,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936870045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:08,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:08,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:08,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335803563] [2024-06-14 11:25:08,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:09,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:09,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 389 transitions, 5419 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:09,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:09,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:09,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:09,839 INFO L124 PetriNetUnfolderBase]: 1156/2072 cut-off events. [2024-06-14 11:25:09,840 INFO L125 PetriNetUnfolderBase]: For 199678/199678 co-relation queries the response was YES. [2024-06-14 11:25:09,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15163 conditions, 2072 events. 1156/2072 cut-off events. For 199678/199678 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12431 event pairs, 221 based on Foata normal form. 2/2074 useless extension candidates. Maximal degree in co-relation 14951. Up to 1897 conditions per place. [2024-06-14 11:25:09,869 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 355 selfloop transitions, 48 changer transitions 0/405 dead transitions. [2024-06-14 11:25:09,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 405 transitions, 6313 flow [2024-06-14 11:25:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:25:09,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:25:09,871 INFO L175 Difference]: Start difference. First operand has 460 places, 389 transitions, 5419 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:25:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 405 transitions, 6313 flow [2024-06-14 11:25:11,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 405 transitions, 6051 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:11,256 INFO L231 Difference]: Finished difference. Result has 461 places, 390 transitions, 5305 flow [2024-06-14 11:25:11,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5305, PETRI_PLACES=461, PETRI_TRANSITIONS=390} [2024-06-14 11:25:11,256 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 429 predicate places. [2024-06-14 11:25:11,257 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 390 transitions, 5305 flow [2024-06-14 11:25:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:11,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:11,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:25:11,257 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)] === [2024-06-14 11:25:11,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2019671999, now seen corresponding path program 27 times [2024-06-14 11:25:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170990677] [2024-06-14 11:25:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:12,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170990677] [2024-06-14 11:25:12,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170990677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:12,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954113240] [2024-06-14 11:25:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:12,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:12,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 390 transitions, 5305 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:12,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:12,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:12,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:13,511 INFO L124 PetriNetUnfolderBase]: 1160/2080 cut-off events. [2024-06-14 11:25:13,511 INFO L125 PetriNetUnfolderBase]: For 204049/204049 co-relation queries the response was YES. [2024-06-14 11:25:13,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15063 conditions, 2080 events. 1160/2080 cut-off events. For 204049/204049 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12512 event pairs, 209 based on Foata normal form. 2/2082 useless extension candidates. Maximal degree in co-relation 14850. Up to 1874 conditions per place. [2024-06-14 11:25:13,543 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 349 selfloop transitions, 57 changer transitions 0/408 dead transitions. [2024-06-14 11:25:13,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 408 transitions, 6217 flow [2024-06-14 11:25:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:25:13,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:25:13,545 INFO L175 Difference]: Start difference. First operand has 461 places, 390 transitions, 5305 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:25:13,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 408 transitions, 6217 flow [2024-06-14 11:25:14,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 408 transitions, 6079 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:14,964 INFO L231 Difference]: Finished difference. Result has 463 places, 391 transitions, 5336 flow [2024-06-14 11:25:14,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5336, PETRI_PLACES=463, PETRI_TRANSITIONS=391} [2024-06-14 11:25:14,964 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2024-06-14 11:25:14,964 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 391 transitions, 5336 flow [2024-06-14 11:25:14,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:14,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:14,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:14,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:25:14,964 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)] === [2024-06-14 11:25:14,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 108407987, now seen corresponding path program 13 times [2024-06-14 11:25:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:14,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871529517] [2024-06-14 11:25:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:14,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:16,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:16,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871529517] [2024-06-14 11:25:16,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871529517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:16,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:16,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:16,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67099732] [2024-06-14 11:25:16,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:16,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:16,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:16,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:16,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 391 transitions, 5336 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:16,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:16,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:16,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:18,037 INFO L124 PetriNetUnfolderBase]: 1176/2106 cut-off events. [2024-06-14 11:25:18,037 INFO L125 PetriNetUnfolderBase]: For 222798/222798 co-relation queries the response was YES. [2024-06-14 11:25:18,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15625 conditions, 2106 events. 1176/2106 cut-off events. For 222798/222798 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12640 event pairs, 152 based on Foata normal form. 2/2108 useless extension candidates. Maximal degree in co-relation 15411. Up to 1737 conditions per place. [2024-06-14 11:25:18,062 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 96 changer transitions 0/419 dead transitions. [2024-06-14 11:25:18,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 419 transitions, 6674 flow [2024-06-14 11:25:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:25:18,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:25:18,063 INFO L175 Difference]: Start difference. First operand has 463 places, 391 transitions, 5336 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:25:18,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 419 transitions, 6674 flow [2024-06-14 11:25:19,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 419 transitions, 6517 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:19,538 INFO L231 Difference]: Finished difference. Result has 466 places, 395 transitions, 5560 flow [2024-06-14 11:25:19,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5179, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5560, PETRI_PLACES=466, PETRI_TRANSITIONS=395} [2024-06-14 11:25:19,538 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 434 predicate places. [2024-06-14 11:25:19,539 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 395 transitions, 5560 flow [2024-06-14 11:25:19,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:19,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:19,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:19,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:25:19,539 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)] === [2024-06-14 11:25:19,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:19,540 INFO L85 PathProgramCache]: Analyzing trace with hash 108399617, now seen corresponding path program 14 times [2024-06-14 11:25:19,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:19,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965967783] [2024-06-14 11:25:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:19,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965967783] [2024-06-14 11:25:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965967783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:21,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284999256] [2024-06-14 11:25:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:21,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:21,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 395 transitions, 5560 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:21,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:21,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:21,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:23,065 INFO L124 PetriNetUnfolderBase]: 1182/2116 cut-off events. [2024-06-14 11:25:23,065 INFO L125 PetriNetUnfolderBase]: For 226619/226619 co-relation queries the response was YES. [2024-06-14 11:25:23,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15842 conditions, 2116 events. 1182/2116 cut-off events. For 226619/226619 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12723 event pairs, 155 based on Foata normal form. 2/2118 useless extension candidates. Maximal degree in co-relation 15627. Up to 1743 conditions per place. [2024-06-14 11:25:23,096 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 322 selfloop transitions, 96 changer transitions 0/420 dead transitions. [2024-06-14 11:25:23,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 420 transitions, 6810 flow [2024-06-14 11:25:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:25:23,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:25:23,097 INFO L175 Difference]: Start difference. First operand has 466 places, 395 transitions, 5560 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:25:23,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 420 transitions, 6810 flow [2024-06-14 11:25:24,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 420 transitions, 6492 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:24,610 INFO L231 Difference]: Finished difference. Result has 469 places, 397 transitions, 5533 flow [2024-06-14 11:25:24,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5533, PETRI_PLACES=469, PETRI_TRANSITIONS=397} [2024-06-14 11:25:24,610 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 437 predicate places. [2024-06-14 11:25:24,610 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 397 transitions, 5533 flow [2024-06-14 11:25:24,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:24,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:24,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:25:24,611 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)] === [2024-06-14 11:25:24,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2026101089, now seen corresponding path program 28 times [2024-06-14 11:25:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315170860] [2024-06-14 11:25:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:24,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:26,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:26,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315170860] [2024-06-14 11:25:26,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315170860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:26,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:26,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:26,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845125141] [2024-06-14 11:25:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:26,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:26,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:26,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 397 transitions, 5533 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:26,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:26,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:26,999 INFO L124 PetriNetUnfolderBase]: 1186/2124 cut-off events. [2024-06-14 11:25:26,999 INFO L125 PetriNetUnfolderBase]: For 229101/229101 co-relation queries the response was YES. [2024-06-14 11:25:27,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15804 conditions, 2124 events. 1186/2124 cut-off events. For 229101/229101 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12812 event pairs, 210 based on Foata normal form. 2/2126 useless extension candidates. Maximal degree in co-relation 15588. Up to 1887 conditions per place. [2024-06-14 11:25:27,028 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 349 selfloop transitions, 65 changer transitions 0/416 dead transitions. [2024-06-14 11:25:27,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 416 transitions, 6469 flow [2024-06-14 11:25:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:25:27,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:25:27,029 INFO L175 Difference]: Start difference. First operand has 469 places, 397 transitions, 5533 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:25:27,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 416 transitions, 6469 flow [2024-06-14 11:25:28,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 416 transitions, 6238 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:28,518 INFO L231 Difference]: Finished difference. Result has 471 places, 398 transitions, 5489 flow [2024-06-14 11:25:28,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5489, PETRI_PLACES=471, PETRI_TRANSITIONS=398} [2024-06-14 11:25:28,518 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-14 11:25:28,519 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 398 transitions, 5489 flow [2024-06-14 11:25:28,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:28,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:28,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:28,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:25:28,519 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)] === [2024-06-14 11:25:28,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 108162033, now seen corresponding path program 29 times [2024-06-14 11:25:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:28,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702140550] [2024-06-14 11:25:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:28,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702140550] [2024-06-14 11:25:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702140550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:30,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:30,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445990700] [2024-06-14 11:25:30,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:30,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:30,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 398 transitions, 5489 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:30,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:30,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:30,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:31,160 INFO L124 PetriNetUnfolderBase]: 1190/2132 cut-off events. [2024-06-14 11:25:31,160 INFO L125 PetriNetUnfolderBase]: For 233534/233534 co-relation queries the response was YES. [2024-06-14 11:25:31,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15820 conditions, 2132 events. 1190/2132 cut-off events. For 233534/233534 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12878 event pairs, 158 based on Foata normal form. 2/2134 useless extension candidates. Maximal degree in co-relation 15603. Up to 1820 conditions per place. [2024-06-14 11:25:31,191 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 331 selfloop transitions, 85 changer transitions 0/418 dead transitions. [2024-06-14 11:25:31,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 418 transitions, 6437 flow [2024-06-14 11:25:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:25:31,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:25:31,193 INFO L175 Difference]: Start difference. First operand has 471 places, 398 transitions, 5489 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:25:31,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 418 transitions, 6437 flow [2024-06-14 11:25:32,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 418 transitions, 6262 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:32,711 INFO L231 Difference]: Finished difference. Result has 473 places, 399 transitions, 5542 flow [2024-06-14 11:25:32,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5542, PETRI_PLACES=473, PETRI_TRANSITIONS=399} [2024-06-14 11:25:32,711 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 441 predicate places. [2024-06-14 11:25:32,711 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 399 transitions, 5542 flow [2024-06-14 11:25:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:32,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:32,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:32,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 11:25:32,712 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)] === [2024-06-14 11:25:32,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash 108168977, now seen corresponding path program 15 times [2024-06-14 11:25:32,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:32,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628959878] [2024-06-14 11:25:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:32,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628959878] [2024-06-14 11:25:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628959878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:34,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:34,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595722527] [2024-06-14 11:25:34,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:34,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:34,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:34,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 399 transitions, 5542 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:34,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:34,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:34,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:35,506 INFO L124 PetriNetUnfolderBase]: 1196/2142 cut-off events. [2024-06-14 11:25:35,506 INFO L125 PetriNetUnfolderBase]: For 236675/236675 co-relation queries the response was YES. [2024-06-14 11:25:35,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15929 conditions, 2142 events. 1196/2142 cut-off events. For 236675/236675 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12932 event pairs, 155 based on Foata normal form. 2/2144 useless extension candidates. Maximal degree in co-relation 15711. Up to 1765 conditions per place. [2024-06-14 11:25:35,537 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 323 selfloop transitions, 96 changer transitions 0/421 dead transitions. [2024-06-14 11:25:35,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 421 transitions, 6762 flow [2024-06-14 11:25:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:25:35,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:25:35,538 INFO L175 Difference]: Start difference. First operand has 473 places, 399 transitions, 5542 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:25:35,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 421 transitions, 6762 flow [2024-06-14 11:25:37,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 421 transitions, 6544 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:37,031 INFO L231 Difference]: Finished difference. Result has 475 places, 401 transitions, 5590 flow [2024-06-14 11:25:37,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5590, PETRI_PLACES=475, PETRI_TRANSITIONS=401} [2024-06-14 11:25:37,032 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 443 predicate places. [2024-06-14 11:25:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 401 transitions, 5590 flow [2024-06-14 11:25:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:37,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 11:25:37,032 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)] === [2024-06-14 11:25:37,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 101732943, now seen corresponding path program 30 times [2024-06-14 11:25:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045490502] [2024-06-14 11:25:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045490502] [2024-06-14 11:25:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045490502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:38,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:38,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:38,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045451258] [2024-06-14 11:25:38,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:38,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:38,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:38,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:38,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:38,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:38,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 401 transitions, 5590 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:38,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:38,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:38,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:39,242 INFO L124 PetriNetUnfolderBase]: 1200/2150 cut-off events. [2024-06-14 11:25:39,242 INFO L125 PetriNetUnfolderBase]: For 240426/240426 co-relation queries the response was YES. [2024-06-14 11:25:39,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16017 conditions, 2150 events. 1200/2150 cut-off events. For 240426/240426 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12961 event pairs, 160 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 15798. Up to 1852 conditions per place. [2024-06-14 11:25:39,274 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 335 selfloop transitions, 82 changer transitions 0/419 dead transitions. [2024-06-14 11:25:39,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 419 transitions, 6532 flow [2024-06-14 11:25:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:25:39,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:25:39,275 INFO L175 Difference]: Start difference. First operand has 475 places, 401 transitions, 5590 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:25:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 419 transitions, 6532 flow [2024-06-14 11:25:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 419 transitions, 6297 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:40,619 INFO L231 Difference]: Finished difference. Result has 477 places, 402 transitions, 5579 flow [2024-06-14 11:25:40,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5579, PETRI_PLACES=477, PETRI_TRANSITIONS=402} [2024-06-14 11:25:40,620 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-14 11:25:40,620 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 402 transitions, 5579 flow [2024-06-14 11:25:40,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:40,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:40,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:40,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 11:25:40,620 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)] === [2024-06-14 11:25:40,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:40,620 INFO L85 PathProgramCache]: Analyzing trace with hash 101728293, now seen corresponding path program 31 times [2024-06-14 11:25:40,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:40,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134879883] [2024-06-14 11:25:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:40,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:41,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:41,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134879883] [2024-06-14 11:25:41,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134879883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:41,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:41,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:25:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74300948] [2024-06-14 11:25:41,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:25:41,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:41,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:25:41,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:25:41,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:41,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 402 transitions, 5579 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:41,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:41,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:41,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:42,577 INFO L124 PetriNetUnfolderBase]: 1204/2158 cut-off events. [2024-06-14 11:25:42,577 INFO L125 PetriNetUnfolderBase]: For 241338/241338 co-relation queries the response was YES. [2024-06-14 11:25:42,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16052 conditions, 2158 events. 1204/2158 cut-off events. For 241338/241338 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13053 event pairs, 158 based on Foata normal form. 2/2160 useless extension candidates. Maximal degree in co-relation 15833. Up to 1860 conditions per place. [2024-06-14 11:25:42,609 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 337 selfloop transitions, 81 changer transitions 0/420 dead transitions. [2024-06-14 11:25:42,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 420 transitions, 6523 flow [2024-06-14 11:25:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:25:42,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:25:42,610 INFO L175 Difference]: Start difference. First operand has 477 places, 402 transitions, 5579 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:25:42,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 420 transitions, 6523 flow [2024-06-14 11:25:44,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 420 transitions, 6309 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:44,223 INFO L231 Difference]: Finished difference. Result has 479 places, 403 transitions, 5589 flow [2024-06-14 11:25:44,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5365, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5589, PETRI_PLACES=479, PETRI_TRANSITIONS=403} [2024-06-14 11:25:44,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-14 11:25:44,224 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 403 transitions, 5589 flow [2024-06-14 11:25:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:44,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:44,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:44,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 11:25:44,224 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)] === [2024-06-14 11:25:44,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -566878847, now seen corresponding path program 16 times [2024-06-14 11:25:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130555564] [2024-06-14 11:25:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:45,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130555564] [2024-06-14 11:25:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130555564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:45,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658633392] [2024-06-14 11:25:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:45,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 403 transitions, 5589 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:45,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:47,094 INFO L124 PetriNetUnfolderBase]: 1210/2168 cut-off events. [2024-06-14 11:25:47,094 INFO L125 PetriNetUnfolderBase]: For 243907/243907 co-relation queries the response was YES. [2024-06-14 11:25:47,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16073 conditions, 2168 events. 1210/2168 cut-off events. For 243907/243907 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13135 event pairs, 144 based on Foata normal form. 2/2170 useless extension candidates. Maximal degree in co-relation 15853. Up to 1149 conditions per place. [2024-06-14 11:25:47,124 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 195 changer transitions 0/430 dead transitions. [2024-06-14 11:25:47,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 430 transitions, 7085 flow [2024-06-14 11:25:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:25:47,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 11:25:47,125 INFO L175 Difference]: Start difference. First operand has 479 places, 403 transitions, 5589 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:25:47,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 430 transitions, 7085 flow [2024-06-14 11:25:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 430 transitions, 6871 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:48,546 INFO L231 Difference]: Finished difference. Result has 482 places, 405 transitions, 5822 flow [2024-06-14 11:25:48,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5822, PETRI_PLACES=482, PETRI_TRANSITIONS=405} [2024-06-14 11:25:48,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-14 11:25:48,547 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 405 transitions, 5822 flow [2024-06-14 11:25:48,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:48,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:48,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:48,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 11:25:48,548 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)] === [2024-06-14 11:25:48,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1848964919, now seen corresponding path program 32 times [2024-06-14 11:25:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480360111] [2024-06-14 11:25:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:48,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:49,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:49,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480360111] [2024-06-14 11:25:49,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480360111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:49,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:49,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254342982] [2024-06-14 11:25:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:49,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:49,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:49,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:49,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 405 transitions, 5822 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:49,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:49,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:49,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:50,582 INFO L124 PetriNetUnfolderBase]: 1214/2176 cut-off events. [2024-06-14 11:25:50,583 INFO L125 PetriNetUnfolderBase]: For 249009/249009 co-relation queries the response was YES. [2024-06-14 11:25:50,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16451 conditions, 2176 events. 1214/2176 cut-off events. For 249009/249009 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13194 event pairs, 234 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 16230. Up to 2001 conditions per place. [2024-06-14 11:25:50,614 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 372 selfloop transitions, 47 changer transitions 0/421 dead transitions. [2024-06-14 11:25:50,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 421 transitions, 6758 flow [2024-06-14 11:25:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:25:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:25:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:25:50,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-14 11:25:50,615 INFO L175 Difference]: Start difference. First operand has 482 places, 405 transitions, 5822 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:25:50,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 421 transitions, 6758 flow [2024-06-14 11:25:52,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 421 transitions, 6308 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:25:52,054 INFO L231 Difference]: Finished difference. Result has 483 places, 406 transitions, 5530 flow [2024-06-14 11:25:52,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=483, PETRI_TRANSITIONS=406} [2024-06-14 11:25:52,055 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-14 11:25:52,055 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 406 transitions, 5530 flow [2024-06-14 11:25:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:52,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:52,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 11:25:52,056 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)] === [2024-06-14 11:25:52,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2026108033, now seen corresponding path program 17 times [2024-06-14 11:25:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472455718] [2024-06-14 11:25:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:54,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:54,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472455718] [2024-06-14 11:25:54,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472455718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:54,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:54,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:54,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841302559] [2024-06-14 11:25:54,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:54,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:54,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:54,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:54,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 406 transitions, 5530 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:54,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:54,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:54,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:25:55,346 INFO L124 PetriNetUnfolderBase]: 1220/2186 cut-off events. [2024-06-14 11:25:55,346 INFO L125 PetriNetUnfolderBase]: For 252153/252153 co-relation queries the response was YES. [2024-06-14 11:25:55,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 2186 events. 1220/2186 cut-off events. For 252153/252153 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13287 event pairs, 218 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 15918. Up to 1929 conditions per place. [2024-06-14 11:25:55,377 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 70 changer transitions 0/428 dead transitions. [2024-06-14 11:25:55,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 428 transitions, 6540 flow [2024-06-14 11:25:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:25:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:25:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:25:55,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 11:25:55,378 INFO L175 Difference]: Start difference. First operand has 483 places, 406 transitions, 5530 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:25:55,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 428 transitions, 6540 flow [2024-06-14 11:25:56,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 428 transitions, 6392 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:25:56,869 INFO L231 Difference]: Finished difference. Result has 486 places, 408 transitions, 5624 flow [2024-06-14 11:25:56,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5382, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5624, PETRI_PLACES=486, PETRI_TRANSITIONS=408} [2024-06-14 11:25:56,870 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-14 11:25:56,870 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 408 transitions, 5624 flow [2024-06-14 11:25:56,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:56,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:25:56,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:25:56,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 11:25:56,870 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)] === [2024-06-14 11:25:56,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:25:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 101912867, now seen corresponding path program 18 times [2024-06-14 11:25:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:25:56,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819898471] [2024-06-14 11:25:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:25:56,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:25:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:25:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:25:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:25:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819898471] [2024-06-14 11:25:59,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819898471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:25:59,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:25:59,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:25:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494405873] [2024-06-14 11:25:59,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:25:59,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:25:59,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:25:59,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:25:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:25:59,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:25:59,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 408 transitions, 5624 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:25:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:25:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:25:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:00,102 INFO L124 PetriNetUnfolderBase]: 1216/2180 cut-off events. [2024-06-14 11:26:00,103 INFO L125 PetriNetUnfolderBase]: For 238453/238453 co-relation queries the response was YES. [2024-06-14 11:26:00,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15831 conditions, 2180 events. 1216/2180 cut-off events. For 238453/238453 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13217 event pairs, 167 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 15608. Up to 1872 conditions per place. [2024-06-14 11:26:00,134 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2024-06-14 11:26:00,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 425 transitions, 6526 flow [2024-06-14 11:26:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:26:00,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:26:00,135 INFO L175 Difference]: Start difference. First operand has 486 places, 408 transitions, 5624 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:26:00,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 425 transitions, 6526 flow [2024-06-14 11:26:01,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 425 transitions, 6258 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-14 11:26:01,609 INFO L231 Difference]: Finished difference. Result has 487 places, 408 transitions, 5530 flow [2024-06-14 11:26:01,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=487, PETRI_TRANSITIONS=408} [2024-06-14 11:26:01,609 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-14 11:26:01,609 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 408 transitions, 5530 flow [2024-06-14 11:26:01,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:01,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:01,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:01,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 11:26:01,610 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)] === [2024-06-14 11:26:01,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash 575906261, now seen corresponding path program 19 times [2024-06-14 11:26:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308960170] [2024-06-14 11:26:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:03,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308960170] [2024-06-14 11:26:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308960170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:03,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:03,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696132408] [2024-06-14 11:26:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:03,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:03,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:03,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:03,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 408 transitions, 5530 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:03,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:03,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:03,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:04,154 INFO L124 PetriNetUnfolderBase]: 1212/2172 cut-off events. [2024-06-14 11:26:04,154 INFO L125 PetriNetUnfolderBase]: For 223580/223580 co-relation queries the response was YES. [2024-06-14 11:26:04,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 2172 events. 1212/2172 cut-off events. For 223580/223580 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13231 event pairs, 427 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 15211. Up to 2100 conditions per place. [2024-06-14 11:26:04,188 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 396 selfloop transitions, 25 changer transitions 0/423 dead transitions. [2024-06-14 11:26:04,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 423 transitions, 6416 flow [2024-06-14 11:26:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:26:04,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-14 11:26:04,189 INFO L175 Difference]: Start difference. First operand has 487 places, 408 transitions, 5530 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:26:04,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 423 transitions, 6416 flow [2024-06-14 11:26:05,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 423 transitions, 6195 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:05,602 INFO L231 Difference]: Finished difference. Result has 488 places, 408 transitions, 5365 flow [2024-06-14 11:26:05,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5365, PETRI_PLACES=488, PETRI_TRANSITIONS=408} [2024-06-14 11:26:05,602 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-14 11:26:05,602 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 408 transitions, 5365 flow [2024-06-14 11:26:05,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:05,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:05,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 11:26:05,603 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)] === [2024-06-14 11:26:05,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2019667349, now seen corresponding path program 33 times [2024-06-14 11:26:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:05,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057797040] [2024-06-14 11:26:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057797040] [2024-06-14 11:26:06,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057797040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:06,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:06,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122473780] [2024-06-14 11:26:06,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:06,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:06,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:06,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:07,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:07,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 408 transitions, 5365 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:07,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:07,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:07,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:07,904 INFO L124 PetriNetUnfolderBase]: 1216/2182 cut-off events. [2024-06-14 11:26:07,904 INFO L125 PetriNetUnfolderBase]: For 224295/224295 co-relation queries the response was YES. [2024-06-14 11:26:07,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15365 conditions, 2182 events. 1216/2182 cut-off events. For 224295/224295 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13287 event pairs, 230 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 15141. Up to 1976 conditions per place. [2024-06-14 11:26:07,938 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 369 selfloop transitions, 55 changer transitions 0/426 dead transitions. [2024-06-14 11:26:07,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 426 transitions, 6323 flow [2024-06-14 11:26:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:26:07,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:26:07,939 INFO L175 Difference]: Start difference. First operand has 488 places, 408 transitions, 5365 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:26:07,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 426 transitions, 6323 flow [2024-06-14 11:26:09,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 426 transitions, 6263 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:09,425 INFO L231 Difference]: Finished difference. Result has 487 places, 409 transitions, 5482 flow [2024-06-14 11:26:09,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5305, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5482, PETRI_PLACES=487, PETRI_TRANSITIONS=409} [2024-06-14 11:26:09,425 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-14 11:26:09,425 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 409 transitions, 5482 flow [2024-06-14 11:26:09,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:09,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:09,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:09,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 11:26:09,426 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)] === [2024-06-14 11:26:09,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1811802819, now seen corresponding path program 20 times [2024-06-14 11:26:09,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:09,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228863288] [2024-06-14 11:26:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:09,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:11,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:11,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228863288] [2024-06-14 11:26:11,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228863288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:11,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:11,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:11,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597117907] [2024-06-14 11:26:11,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:11,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:11,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:11,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 409 transitions, 5482 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:11,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:11,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:11,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:12,983 INFO L124 PetriNetUnfolderBase]: 1222/2192 cut-off events. [2024-06-14 11:26:12,983 INFO L125 PetriNetUnfolderBase]: For 229375/229375 co-relation queries the response was YES. [2024-06-14 11:26:13,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15610 conditions, 2192 events. 1222/2192 cut-off events. For 229375/229375 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13335 event pairs, 226 based on Foata normal form. 2/2194 useless extension candidates. Maximal degree in co-relation 15385. Up to 1966 conditions per place. [2024-06-14 11:26:13,016 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 62 changer transitions 0/430 dead transitions. [2024-06-14 11:26:13,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 430 transitions, 6494 flow [2024-06-14 11:26:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:26:13,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:26:13,017 INFO L175 Difference]: Start difference. First operand has 487 places, 409 transitions, 5482 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:26:13,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 430 transitions, 6494 flow [2024-06-14 11:26:14,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 430 transitions, 6329 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 11:26:14,669 INFO L231 Difference]: Finished difference. Result has 490 places, 411 transitions, 5547 flow [2024-06-14 11:26:14,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5317, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5547, PETRI_PLACES=490, PETRI_TRANSITIONS=411} [2024-06-14 11:26:14,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-14 11:26:14,669 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 411 transitions, 5547 flow [2024-06-14 11:26:14,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:14,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:14,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:14,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 11:26:14,670 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)] === [2024-06-14 11:26:14,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash 341884357, now seen corresponding path program 21 times [2024-06-14 11:26:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:14,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986561508] [2024-06-14 11:26:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:16,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:16,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986561508] [2024-06-14 11:26:16,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986561508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:16,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:16,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:16,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116443973] [2024-06-14 11:26:16,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:16,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:16,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:16,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 411 transitions, 5547 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:16,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:16,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:16,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:17,413 INFO L124 PetriNetUnfolderBase]: 1218/2186 cut-off events. [2024-06-14 11:26:17,413 INFO L125 PetriNetUnfolderBase]: For 214029/214029 co-relation queries the response was YES. [2024-06-14 11:26:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15219 conditions, 2186 events. 1218/2186 cut-off events. For 214029/214029 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13296 event pairs, 213 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 14993. Up to 1832 conditions per place. [2024-06-14 11:26:17,446 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 342 selfloop transitions, 92 changer transitions 0/436 dead transitions. [2024-06-14 11:26:17,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 436 transitions, 6763 flow [2024-06-14 11:26:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:26:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:26:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:26:17,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-14 11:26:17,447 INFO L175 Difference]: Start difference. First operand has 490 places, 411 transitions, 5547 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:26:17,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 436 transitions, 6763 flow [2024-06-14 11:26:18,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 436 transitions, 6557 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-14 11:26:18,911 INFO L231 Difference]: Finished difference. Result has 493 places, 411 transitions, 5533 flow [2024-06-14 11:26:18,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5341, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5533, PETRI_PLACES=493, PETRI_TRANSITIONS=411} [2024-06-14 11:26:18,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-14 11:26:18,911 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 411 transitions, 5533 flow [2024-06-14 11:26:18,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:18,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:18,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:18,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 11:26:18,911 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)] === [2024-06-14 11:26:18,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2026347353, now seen corresponding path program 3 times [2024-06-14 11:26:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22471195] [2024-06-14 11:26:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22471195] [2024-06-14 11:26:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22471195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:20,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:20,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818638060] [2024-06-14 11:26:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:21,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:21,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 411 transitions, 5533 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:21,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:21,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:21,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:22,091 INFO L124 PetriNetUnfolderBase]: 1215/2181 cut-off events. [2024-06-14 11:26:22,091 INFO L125 PetriNetUnfolderBase]: For 198609/198609 co-relation queries the response was YES. [2024-06-14 11:26:22,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 2181 events. 1215/2181 cut-off events. For 198609/198609 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13356 event pairs, 301 based on Foata normal form. 2/2183 useless extension candidates. Maximal degree in co-relation 14708. Up to 2048 conditions per place. [2024-06-14 11:26:22,126 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 382 selfloop transitions, 43 changer transitions 0/427 dead transitions. [2024-06-14 11:26:22,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 427 transitions, 6437 flow [2024-06-14 11:26:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:26:22,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-14 11:26:22,127 INFO L175 Difference]: Start difference. First operand has 493 places, 411 transitions, 5533 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:26:22,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 427 transitions, 6437 flow [2024-06-14 11:26:23,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 427 transitions, 5834 flow, removed 47 selfloop flow, removed 14 redundant places. [2024-06-14 11:26:23,695 INFO L231 Difference]: Finished difference. Result has 490 places, 411 transitions, 5022 flow [2024-06-14 11:26:23,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5022, PETRI_PLACES=490, PETRI_TRANSITIONS=411} [2024-06-14 11:26:23,696 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-14 11:26:23,696 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 411 transitions, 5022 flow [2024-06-14 11:26:23,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:23,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:23,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:23,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 11:26:23,696 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)] === [2024-06-14 11:26:23,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash -567124801, now seen corresponding path program 34 times [2024-06-14 11:26:23,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:23,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235508063] [2024-06-14 11:26:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:23,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:25,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235508063] [2024-06-14 11:26:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235508063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:25,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:26:25,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540275998] [2024-06-14 11:26:25,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:26:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:26:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:26:25,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:25,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 411 transitions, 5022 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:25,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:25,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:25,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:25,764 INFO L124 PetriNetUnfolderBase]: 1219/2187 cut-off events. [2024-06-14 11:26:25,764 INFO L125 PetriNetUnfolderBase]: For 200805/200805 co-relation queries the response was YES. [2024-06-14 11:26:25,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 2187 events. 1219/2187 cut-off events. For 200805/200805 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13361 event pairs, 433 based on Foata normal form. 2/2189 useless extension candidates. Maximal degree in co-relation 14000. Up to 2145 conditions per place. [2024-06-14 11:26:25,798 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 406 selfloop transitions, 16 changer transitions 0/424 dead transitions. [2024-06-14 11:26:25,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 424 transitions, 5960 flow [2024-06-14 11:26:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-14 11:26:25,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-14 11:26:25,799 INFO L175 Difference]: Start difference. First operand has 490 places, 411 transitions, 5022 flow. Second operand 10 states and 99 transitions. [2024-06-14 11:26:25,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 424 transitions, 5960 flow [2024-06-14 11:26:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 424 transitions, 5790 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:27,266 INFO L231 Difference]: Finished difference. Result has 489 places, 412 transitions, 4952 flow [2024-06-14 11:26:27,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4952, PETRI_PLACES=489, PETRI_TRANSITIONS=412} [2024-06-14 11:26:27,267 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 457 predicate places. [2024-06-14 11:26:27,267 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 412 transitions, 4952 flow [2024-06-14 11:26:27,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:27,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:27,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:27,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 11:26:27,267 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)] === [2024-06-14 11:26:27,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1848849599, now seen corresponding path program 35 times [2024-06-14 11:26:27,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:27,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294866162] [2024-06-14 11:26:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:27,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:28,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294866162] [2024-06-14 11:26:28,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294866162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:28,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:28,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:28,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891678614] [2024-06-14 11:26:28,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:28,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:28,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:28,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 412 transitions, 4952 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:28,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:28,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:28,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:29,290 INFO L124 PetriNetUnfolderBase]: 1216/2184 cut-off events. [2024-06-14 11:26:29,290 INFO L125 PetriNetUnfolderBase]: For 182827/182827 co-relation queries the response was YES. [2024-06-14 11:26:29,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13647 conditions, 2184 events. 1216/2184 cut-off events. For 182827/182827 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13336 event pairs, 231 based on Foata normal form. 2/2186 useless extension candidates. Maximal degree in co-relation 13424. Up to 2009 conditions per place. [2024-06-14 11:26:29,322 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 379 selfloop transitions, 46 changer transitions 0/427 dead transitions. [2024-06-14 11:26:29,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 427 transitions, 5840 flow [2024-06-14 11:26:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:26:29,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:26:29,323 INFO L175 Difference]: Start difference. First operand has 489 places, 412 transitions, 4952 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:26:29,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 427 transitions, 5840 flow [2024-06-14 11:26:30,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 427 transitions, 5735 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 11:26:30,603 INFO L231 Difference]: Finished difference. Result has 490 places, 412 transitions, 4943 flow [2024-06-14 11:26:30,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4943, PETRI_PLACES=490, PETRI_TRANSITIONS=412} [2024-06-14 11:26:30,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-14 11:26:30,603 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 412 transitions, 4943 flow [2024-06-14 11:26:30,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:30,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:30,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 11:26:30,603 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)] === [2024-06-14 11:26:30,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -103574663, now seen corresponding path program 22 times [2024-06-14 11:26:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949858584] [2024-06-14 11:26:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949858584] [2024-06-14 11:26:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949858584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:32,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:32,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596929967] [2024-06-14 11:26:32,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:32,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:32,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:32,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:32,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 412 transitions, 4943 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:32,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:32,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:32,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:33,034 INFO L124 PetriNetUnfolderBase]: 1222/2194 cut-off events. [2024-06-14 11:26:33,034 INFO L125 PetriNetUnfolderBase]: For 181402/181402 co-relation queries the response was YES. [2024-06-14 11:26:33,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 2194 events. 1222/2194 cut-off events. For 181402/181402 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13365 event pairs, 146 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 13427. Up to 1172 conditions per place. [2024-06-14 11:26:33,066 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 199 changer transitions 0/436 dead transitions. [2024-06-14 11:26:33,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 436 transitions, 6461 flow [2024-06-14 11:26:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:26:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:26:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:26:33,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:26:33,067 INFO L175 Difference]: Start difference. First operand has 490 places, 412 transitions, 4943 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:26:33,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 436 transitions, 6461 flow [2024-06-14 11:26:34,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 436 transitions, 6169 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-14 11:26:34,519 INFO L231 Difference]: Finished difference. Result has 490 places, 414 transitions, 5100 flow [2024-06-14 11:26:34,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4651, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5100, PETRI_PLACES=490, PETRI_TRANSITIONS=414} [2024-06-14 11:26:34,519 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-14 11:26:34,519 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 414 transitions, 5100 flow [2024-06-14 11:26:34,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:34,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:34,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 11:26:34,520 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)] === [2024-06-14 11:26:34,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1853618143, now seen corresponding path program 23 times [2024-06-14 11:26:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185191793] [2024-06-14 11:26:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:34,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185191793] [2024-06-14 11:26:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185191793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:36,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60451288] [2024-06-14 11:26:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:36,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:36,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:36,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 414 transitions, 5100 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:36,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:36,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:36,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:37,905 INFO L124 PetriNetUnfolderBase]: 1218/2188 cut-off events. [2024-06-14 11:26:37,906 INFO L125 PetriNetUnfolderBase]: For 165266/165266 co-relation queries the response was YES. [2024-06-14 11:26:37,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13435 conditions, 2188 events. 1218/2188 cut-off events. For 165266/165266 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13339 event pairs, 237 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 13212. Up to 2003 conditions per place. [2024-06-14 11:26:37,939 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 378 selfloop transitions, 51 changer transitions 0/431 dead transitions. [2024-06-14 11:26:37,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 431 transitions, 6008 flow [2024-06-14 11:26:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:26:37,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-14 11:26:37,940 INFO L175 Difference]: Start difference. First operand has 490 places, 414 transitions, 5100 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:26:37,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 431 transitions, 6008 flow [2024-06-14 11:26:39,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 431 transitions, 5382 flow, removed 39 selfloop flow, removed 13 redundant places. [2024-06-14 11:26:39,271 INFO L231 Difference]: Finished difference. Result has 488 places, 414 transitions, 4581 flow [2024-06-14 11:26:39,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4581, PETRI_PLACES=488, PETRI_TRANSITIONS=414} [2024-06-14 11:26:39,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-14 11:26:39,271 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 414 transitions, 4581 flow [2024-06-14 11:26:39,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:39,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:39,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 11:26:39,271 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)] === [2024-06-14 11:26:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -567117857, now seen corresponding path program 24 times [2024-06-14 11:26:39,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676047480] [2024-06-14 11:26:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676047480] [2024-06-14 11:26:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676047480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:41,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:26:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178865529] [2024-06-14 11:26:41,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:41,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:26:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:26:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:26:41,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:41,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 414 transitions, 4581 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:41,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:41,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:41,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:42,040 INFO L124 PetriNetUnfolderBase]: 1214/2182 cut-off events. [2024-06-14 11:26:42,040 INFO L125 PetriNetUnfolderBase]: For 139414/139414 co-relation queries the response was YES. [2024-06-14 11:26:42,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12197 conditions, 2182 events. 1214/2182 cut-off events. For 139414/139414 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13342 event pairs, 148 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 11979. Up to 1166 conditions per place. [2024-06-14 11:26:42,072 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 200 changer transitions 0/435 dead transitions. [2024-06-14 11:26:42,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 435 transitions, 5779 flow [2024-06-14 11:26:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:26:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:26:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:26:42,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:26:42,074 INFO L175 Difference]: Start difference. First operand has 488 places, 414 transitions, 4581 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:26:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 435 transitions, 5779 flow [2024-06-14 11:26:43,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 435 transitions, 5627 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:43,032 INFO L231 Difference]: Finished difference. Result has 488 places, 414 transitions, 4834 flow [2024-06-14 11:26:43,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4834, PETRI_PLACES=488, PETRI_TRANSITIONS=414} [2024-06-14 11:26:43,033 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-14 11:26:43,033 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 414 transitions, 4834 flow [2024-06-14 11:26:43,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:26:43,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:43,033 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] [2024-06-14 11:26:43,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 11:26:43,033 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)] === [2024-06-14 11:26:43,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash 931629106, now seen corresponding path program 1 times [2024-06-14 11:26:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:43,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890772925] [2024-06-14 11:26:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:43,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:44,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890772925] [2024-06-14 11:26:44,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890772925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:44,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:44,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:44,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873613324] [2024-06-14 11:26:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:44,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:44,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:44,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 414 transitions, 4834 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:44,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:44,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:45,476 INFO L124 PetriNetUnfolderBase]: 1218/2188 cut-off events. [2024-06-14 11:26:45,476 INFO L125 PetriNetUnfolderBase]: For 145843/145843 co-relation queries the response was YES. [2024-06-14 11:26:45,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 2188 events. 1218/2188 cut-off events. For 145843/145843 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13393 event pairs, 256 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 12415. Up to 2036 conditions per place. [2024-06-14 11:26:45,516 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 401 selfloop transitions, 38 changer transitions 0/441 dead transitions. [2024-06-14 11:26:45,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 441 transitions, 5810 flow [2024-06-14 11:26:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:26:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:26:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-06-14 11:26:45,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-06-14 11:26:45,517 INFO L175 Difference]: Start difference. First operand has 488 places, 414 transitions, 4834 flow. Second operand 14 states and 143 transitions. [2024-06-14 11:26:45,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 441 transitions, 5810 flow [2024-06-14 11:26:46,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 441 transitions, 5403 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:26:46,718 INFO L231 Difference]: Finished difference. Result has 492 places, 415 transitions, 4541 flow [2024-06-14 11:26:46,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4541, PETRI_PLACES=492, PETRI_TRANSITIONS=415} [2024-06-14 11:26:46,719 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-14 11:26:46,719 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 415 transitions, 4541 flow [2024-06-14 11:26:46,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:46,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:46,719 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] [2024-06-14 11:26:46,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 11:26:46,719 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)] === [2024-06-14 11:26:46,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:46,720 INFO L85 PathProgramCache]: Analyzing trace with hash -320665222, now seen corresponding path program 2 times [2024-06-14 11:26:46,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:46,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955779696] [2024-06-14 11:26:46,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:46,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955779696] [2024-06-14 11:26:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955779696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850697423] [2024-06-14 11:26:48,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:48,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:48,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:48,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 415 transitions, 4541 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:48,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:48,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:48,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:49,222 INFO L124 PetriNetUnfolderBase]: 1222/2196 cut-off events. [2024-06-14 11:26:49,222 INFO L125 PetriNetUnfolderBase]: For 144039/144039 co-relation queries the response was YES. [2024-06-14 11:26:49,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 2196 events. 1222/2196 cut-off events. For 144039/144039 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13451 event pairs, 271 based on Foata normal form. 2/2198 useless extension candidates. Maximal degree in co-relation 12082. Up to 2053 conditions per place. [2024-06-14 11:26:49,256 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 392 selfloop transitions, 45 changer transitions 0/439 dead transitions. [2024-06-14 11:26:49,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 439 transitions, 5513 flow [2024-06-14 11:26:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:26:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:26:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-14 11:26:49,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.317016317016317 [2024-06-14 11:26:49,257 INFO L175 Difference]: Start difference. First operand has 492 places, 415 transitions, 4541 flow. Second operand 13 states and 136 transitions. [2024-06-14 11:26:49,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 439 transitions, 5513 flow [2024-06-14 11:26:50,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 439 transitions, 5409 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-14 11:26:50,362 INFO L231 Difference]: Finished difference. Result has 493 places, 416 transitions, 4568 flow [2024-06-14 11:26:50,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4568, PETRI_PLACES=493, PETRI_TRANSITIONS=416} [2024-06-14 11:26:50,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-14 11:26:50,363 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 416 transitions, 4568 flow [2024-06-14 11:26:50,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:50,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:50,363 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] [2024-06-14 11:26:50,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 11:26:50,363 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)] === [2024-06-14 11:26:50,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash -293138152, now seen corresponding path program 3 times [2024-06-14 11:26:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970814943] [2024-06-14 11:26:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:50,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:51,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:51,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970814943] [2024-06-14 11:26:51,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970814943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:51,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:51,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127688567] [2024-06-14 11:26:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:51,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:51,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:52,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:52,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 416 transitions, 4568 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:52,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:52,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:52,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:52,918 INFO L124 PetriNetUnfolderBase]: 1226/2204 cut-off events. [2024-06-14 11:26:52,918 INFO L125 PetriNetUnfolderBase]: For 150012/150012 co-relation queries the response was YES. [2024-06-14 11:26:52,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12365 conditions, 2204 events. 1226/2204 cut-off events. For 150012/150012 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13505 event pairs, 270 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 12144. Up to 2045 conditions per place. [2024-06-14 11:26:52,952 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 393 selfloop transitions, 45 changer transitions 0/440 dead transitions. [2024-06-14 11:26:52,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 440 transitions, 5542 flow [2024-06-14 11:26:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:26:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:26:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-14 11:26:52,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-14 11:26:52,953 INFO L175 Difference]: Start difference. First operand has 493 places, 416 transitions, 4568 flow. Second operand 13 states and 137 transitions. [2024-06-14 11:26:52,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 440 transitions, 5542 flow [2024-06-14 11:26:54,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 440 transitions, 5423 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:54,031 INFO L231 Difference]: Finished difference. Result has 495 places, 417 transitions, 4581 flow [2024-06-14 11:26:54,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4581, PETRI_PLACES=495, PETRI_TRANSITIONS=417} [2024-06-14 11:26:54,032 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-14 11:26:54,032 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 417 transitions, 4581 flow [2024-06-14 11:26:54,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:54,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:54,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:26:54,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 11:26:54,032 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)] === [2024-06-14 11:26:54,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -298471702, now seen corresponding path program 4 times [2024-06-14 11:26:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:54,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582306982] [2024-06-14 11:26:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:55,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:55,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582306982] [2024-06-14 11:26:55,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582306982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:55,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:55,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:55,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905357033] [2024-06-14 11:26:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:55,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:55,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:55,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:55,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 417 transitions, 4581 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:55,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:55,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:55,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:26:56,567 INFO L124 PetriNetUnfolderBase]: 1230/2212 cut-off events. [2024-06-14 11:26:56,568 INFO L125 PetriNetUnfolderBase]: For 152234/152234 co-relation queries the response was YES. [2024-06-14 11:26:56,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 2212 events. 1230/2212 cut-off events. For 152234/152234 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13594 event pairs, 279 based on Foata normal form. 2/2214 useless extension candidates. Maximal degree in co-relation 12198. Up to 2075 conditions per place. [2024-06-14 11:26:56,599 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 400 selfloop transitions, 39 changer transitions 0/441 dead transitions. [2024-06-14 11:26:56,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 441 transitions, 5557 flow [2024-06-14 11:26:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:26:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:26:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-14 11:26:56,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3123543123543124 [2024-06-14 11:26:56,600 INFO L175 Difference]: Start difference. First operand has 495 places, 417 transitions, 4581 flow. Second operand 13 states and 134 transitions. [2024-06-14 11:26:56,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 441 transitions, 5557 flow [2024-06-14 11:26:57,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 441 transitions, 5435 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-14 11:26:57,722 INFO L231 Difference]: Finished difference. Result has 497 places, 418 transitions, 4581 flow [2024-06-14 11:26:57,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4459, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4581, PETRI_PLACES=497, PETRI_TRANSITIONS=418} [2024-06-14 11:26:57,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-14 11:26:57,723 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 418 transitions, 4581 flow [2024-06-14 11:26:57,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:57,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:26:57,723 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] [2024-06-14 11:26:57,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 11:26:57,724 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)] === [2024-06-14 11:26:57,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:26:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1324078270, now seen corresponding path program 5 times [2024-06-14 11:26:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:26:57,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670342154] [2024-06-14 11:26:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:26:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:26:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:26:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:26:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:26:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670342154] [2024-06-14 11:26:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670342154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:26:59,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:26:59,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:26:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057402321] [2024-06-14 11:26:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:26:59,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:26:59,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:26:59,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:26:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:26:59,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:26:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 418 transitions, 4581 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:26:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:26:59,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:26:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:00,258 INFO L124 PetriNetUnfolderBase]: 1234/2220 cut-off events. [2024-06-14 11:27:00,258 INFO L125 PetriNetUnfolderBase]: For 154526/154526 co-relation queries the response was YES. [2024-06-14 11:27:00,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12459 conditions, 2220 events. 1234/2220 cut-off events. For 154526/154526 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13661 event pairs, 283 based on Foata normal form. 2/2222 useless extension candidates. Maximal degree in co-relation 12236. Up to 2086 conditions per place. [2024-06-14 11:27:00,291 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 404 selfloop transitions, 36 changer transitions 0/442 dead transitions. [2024-06-14 11:27:00,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 442 transitions, 5559 flow [2024-06-14 11:27:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:27:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:27:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-06-14 11:27:00,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31002331002331 [2024-06-14 11:27:00,292 INFO L175 Difference]: Start difference. First operand has 497 places, 418 transitions, 4581 flow. Second operand 13 states and 133 transitions. [2024-06-14 11:27:00,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 442 transitions, 5559 flow [2024-06-14 11:27:01,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 442 transitions, 5447 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:01,619 INFO L231 Difference]: Finished difference. Result has 499 places, 419 transitions, 4587 flow [2024-06-14 11:27:01,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4587, PETRI_PLACES=499, PETRI_TRANSITIONS=419} [2024-06-14 11:27:01,620 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-14 11:27:01,620 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 419 transitions, 4587 flow [2024-06-14 11:27:01,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:01,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:01,620 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] [2024-06-14 11:27:01,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 11:27:01,620 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)] === [2024-06-14 11:27:01,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1489240358, now seen corresponding path program 6 times [2024-06-14 11:27:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:01,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232790056] [2024-06-14 11:27:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:01,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:03,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:03,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232790056] [2024-06-14 11:27:03,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232790056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:03,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:03,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598136986] [2024-06-14 11:27:03,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:03,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:03,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:03,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:03,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:03,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 419 transitions, 4587 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:03,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:03,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:03,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:04,265 INFO L124 PetriNetUnfolderBase]: 1238/2228 cut-off events. [2024-06-14 11:27:04,265 INFO L125 PetriNetUnfolderBase]: For 156569/156569 co-relation queries the response was YES. [2024-06-14 11:27:04,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12506 conditions, 2228 events. 1238/2228 cut-off events. For 156569/156569 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13722 event pairs, 234 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 12282. Up to 2001 conditions per place. [2024-06-14 11:27:04,293 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 399 selfloop transitions, 43 changer transitions 0/444 dead transitions. [2024-06-14 11:27:04,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 444 transitions, 5571 flow [2024-06-14 11:27:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:27:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:27:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-14 11:27:04,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30536130536130535 [2024-06-14 11:27:04,294 INFO L175 Difference]: Start difference. First operand has 499 places, 419 transitions, 4587 flow. Second operand 13 states and 131 transitions. [2024-06-14 11:27:04,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 444 transitions, 5571 flow [2024-06-14 11:27:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 444 transitions, 5463 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:05,638 INFO L231 Difference]: Finished difference. Result has 501 places, 420 transitions, 4613 flow [2024-06-14 11:27:05,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4613, PETRI_PLACES=501, PETRI_TRANSITIONS=420} [2024-06-14 11:27:05,639 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-14 11:27:05,639 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 420 transitions, 4613 flow [2024-06-14 11:27:05,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:05,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:05,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:05,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 11:27:05,639 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)] === [2024-06-14 11:27:05,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1691588497, now seen corresponding path program 1 times [2024-06-14 11:27:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:05,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865754336] [2024-06-14 11:27:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:07,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:07,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865754336] [2024-06-14 11:27:07,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865754336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:07,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:07,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379079291] [2024-06-14 11:27:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:08,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:08,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 420 transitions, 4613 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:08,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:08,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:08,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:08,978 INFO L124 PetriNetUnfolderBase]: 1241/2233 cut-off events. [2024-06-14 11:27:08,979 INFO L125 PetriNetUnfolderBase]: For 149537/149537 co-relation queries the response was YES. [2024-06-14 11:27:09,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12557 conditions, 2233 events. 1241/2233 cut-off events. For 149537/149537 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13738 event pairs, 282 based on Foata normal form. 1/2234 useless extension candidates. Maximal degree in co-relation 12332. Up to 2093 conditions per place. [2024-06-14 11:27:09,010 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 397 selfloop transitions, 46 changer transitions 0/445 dead transitions. [2024-06-14 11:27:09,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 445 transitions, 5633 flow [2024-06-14 11:27:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:27:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:27:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-14 11:27:09,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31934731934731936 [2024-06-14 11:27:09,011 INFO L175 Difference]: Start difference. First operand has 501 places, 420 transitions, 4613 flow. Second operand 13 states and 137 transitions. [2024-06-14 11:27:09,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 445 transitions, 5633 flow [2024-06-14 11:27:10,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 445 transitions, 5509 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:10,228 INFO L231 Difference]: Finished difference. Result has 503 places, 422 transitions, 4661 flow [2024-06-14 11:27:10,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4661, PETRI_PLACES=503, PETRI_TRANSITIONS=422} [2024-06-14 11:27:10,229 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-14 11:27:10,229 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 422 transitions, 4661 flow [2024-06-14 11:27:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:10,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:10,229 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] [2024-06-14 11:27:10,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 11:27:10,229 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)] === [2024-06-14 11:27:10,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1491718574, now seen corresponding path program 1 times [2024-06-14 11:27:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:10,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316498914] [2024-06-14 11:27:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:10,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:12,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316498914] [2024-06-14 11:27:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316498914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:12,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741867211] [2024-06-14 11:27:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:12,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:12,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:12,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:12,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 422 transitions, 4661 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:12,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:12,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:13,444 INFO L124 PetriNetUnfolderBase]: 1261/2277 cut-off events. [2024-06-14 11:27:13,445 INFO L125 PetriNetUnfolderBase]: For 233486/233486 co-relation queries the response was YES. [2024-06-14 11:27:13,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 2277 events. 1261/2277 cut-off events. For 233486/233486 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14103 event pairs, 291 based on Foata normal form. 10/2287 useless extension candidates. Maximal degree in co-relation 12462. Up to 2100 conditions per place. [2024-06-14 11:27:13,472 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 402 selfloop transitions, 32 changer transitions 16/452 dead transitions. [2024-06-14 11:27:13,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 452 transitions, 5689 flow [2024-06-14 11:27:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:27:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:27:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 149 transitions. [2024-06-14 11:27:13,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225108225108225 [2024-06-14 11:27:13,473 INFO L175 Difference]: Start difference. First operand has 503 places, 422 transitions, 4661 flow. Second operand 14 states and 149 transitions. [2024-06-14 11:27:13,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 452 transitions, 5689 flow [2024-06-14 11:27:14,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 452 transitions, 5559 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:14,917 INFO L231 Difference]: Finished difference. Result has 506 places, 417 transitions, 4511 flow [2024-06-14 11:27:14,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4511, PETRI_PLACES=506, PETRI_TRANSITIONS=417} [2024-06-14 11:27:14,918 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-14 11:27:14,918 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 417 transitions, 4511 flow [2024-06-14 11:27:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:14,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:14,919 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] [2024-06-14 11:27:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 11:27:14,919 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)] === [2024-06-14 11:27:14,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1278390442, now seen corresponding path program 7 times [2024-06-14 11:27:14,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417732265] [2024-06-14 11:27:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417732265] [2024-06-14 11:27:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417732265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:16,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:16,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032688378] [2024-06-14 11:27:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:16,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:16,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:16,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:16,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:16,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 417 transitions, 4511 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:16,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:16,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:16,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:17,551 INFO L124 PetriNetUnfolderBase]: 1229/2217 cut-off events. [2024-06-14 11:27:17,551 INFO L125 PetriNetUnfolderBase]: For 162714/162714 co-relation queries the response was YES. [2024-06-14 11:27:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12371 conditions, 2217 events. 1229/2217 cut-off events. For 162714/162714 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13646 event pairs, 251 based on Foata normal form. 2/2219 useless extension candidates. Maximal degree in co-relation 12144. Up to 2092 conditions per place. [2024-06-14 11:27:17,584 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 401 selfloop transitions, 37 changer transitions 0/440 dead transitions. [2024-06-14 11:27:17,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 440 transitions, 5495 flow [2024-06-14 11:27:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:27:17,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-14 11:27:17,585 INFO L175 Difference]: Start difference. First operand has 506 places, 417 transitions, 4511 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:27:17,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 440 transitions, 5495 flow [2024-06-14 11:27:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 440 transitions, 5409 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:18,819 INFO L231 Difference]: Finished difference. Result has 502 places, 418 transitions, 4550 flow [2024-06-14 11:27:18,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4550, PETRI_PLACES=502, PETRI_TRANSITIONS=418} [2024-06-14 11:27:18,820 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-14 11:27:18,820 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 418 transitions, 4550 flow [2024-06-14 11:27:18,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:18,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:18,820 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] [2024-06-14 11:27:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 11:27:18,820 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)] === [2024-06-14 11:27:18,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1287535100, now seen corresponding path program 8 times [2024-06-14 11:27:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:18,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425945966] [2024-06-14 11:27:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:20,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425945966] [2024-06-14 11:27:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425945966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:20,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:20,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:20,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44865957] [2024-06-14 11:27:20,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:20,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:20,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:21,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:21,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 418 transitions, 4550 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:21,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:21,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:21,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:21,953 INFO L124 PetriNetUnfolderBase]: 1233/2225 cut-off events. [2024-06-14 11:27:21,953 INFO L125 PetriNetUnfolderBase]: For 164172/164172 co-relation queries the response was YES. [2024-06-14 11:27:21,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 2225 events. 1233/2225 cut-off events. For 164172/164172 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13707 event pairs, 251 based on Foata normal form. 2/2227 useless extension candidates. Maximal degree in co-relation 12243. Up to 2103 conditions per place. [2024-06-14 11:27:22,002 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 405 selfloop transitions, 34 changer transitions 0/441 dead transitions. [2024-06-14 11:27:22,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 441 transitions, 5536 flow [2024-06-14 11:27:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 11:27:22,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2024-06-14 11:27:22,003 INFO L175 Difference]: Start difference. First operand has 502 places, 418 transitions, 4550 flow. Second operand 12 states and 128 transitions. [2024-06-14 11:27:22,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 441 transitions, 5536 flow [2024-06-14 11:27:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 441 transitions, 5401 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:23,224 INFO L231 Difference]: Finished difference. Result has 502 places, 419 transitions, 4535 flow [2024-06-14 11:27:23,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4535, PETRI_PLACES=502, PETRI_TRANSITIONS=419} [2024-06-14 11:27:23,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-14 11:27:23,225 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 419 transitions, 4535 flow [2024-06-14 11:27:23,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:23,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:23,225 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] [2024-06-14 11:27:23,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 11:27:23,225 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)] === [2024-06-14 11:27:23,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1278240712, now seen corresponding path program 9 times [2024-06-14 11:27:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:23,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447548510] [2024-06-14 11:27:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:23,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:24,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447548510] [2024-06-14 11:27:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447548510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111289224] [2024-06-14 11:27:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:24,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:25,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:25,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 419 transitions, 4535 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:25,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:25,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:25,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:26,048 INFO L124 PetriNetUnfolderBase]: 1237/2233 cut-off events. [2024-06-14 11:27:26,048 INFO L125 PetriNetUnfolderBase]: For 161690/161690 co-relation queries the response was YES. [2024-06-14 11:27:26,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12449 conditions, 2233 events. 1237/2233 cut-off events. For 161690/161690 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13776 event pairs, 251 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 12223. Up to 2114 conditions per place. [2024-06-14 11:27:26,081 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 409 selfloop transitions, 31 changer transitions 0/442 dead transitions. [2024-06-14 11:27:26,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 442 transitions, 5521 flow [2024-06-14 11:27:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:27:26,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 11:27:26,082 INFO L175 Difference]: Start difference. First operand has 502 places, 419 transitions, 4535 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:27:26,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 442 transitions, 5521 flow [2024-06-14 11:27:27,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 442 transitions, 5413 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-14 11:27:27,330 INFO L231 Difference]: Finished difference. Result has 504 places, 420 transitions, 4541 flow [2024-06-14 11:27:27,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4541, PETRI_PLACES=504, PETRI_TRANSITIONS=420} [2024-06-14 11:27:27,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:27:27,331 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 420 transitions, 4541 flow [2024-06-14 11:27:27,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:27,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:27,332 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] [2024-06-14 11:27:27,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 11:27:27,332 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)] === [2024-06-14 11:27:27,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2031435240, now seen corresponding path program 10 times [2024-06-14 11:27:27,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:27,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933802754] [2024-06-14 11:27:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:27,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933802754] [2024-06-14 11:27:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933802754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:29,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955178372] [2024-06-14 11:27:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:29,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:29,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 420 transitions, 4541 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:29,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:29,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:29,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:30,095 INFO L124 PetriNetUnfolderBase]: 1241/2241 cut-off events. [2024-06-14 11:27:30,095 INFO L125 PetriNetUnfolderBase]: For 164176/164176 co-relation queries the response was YES. [2024-06-14 11:27:30,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2241 events. 1241/2241 cut-off events. For 164176/164176 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13870 event pairs, 251 based on Foata normal form. 2/2243 useless extension candidates. Maximal degree in co-relation 12269. Up to 2125 conditions per place. [2024-06-14 11:27:30,129 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 413 selfloop transitions, 28 changer transitions 0/443 dead transitions. [2024-06-14 11:27:30,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 443 transitions, 5529 flow [2024-06-14 11:27:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 11:27:30,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 11:27:30,130 INFO L175 Difference]: Start difference. First operand has 504 places, 420 transitions, 4541 flow. Second operand 12 states and 126 transitions. [2024-06-14 11:27:30,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 443 transitions, 5529 flow [2024-06-14 11:27:31,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 443 transitions, 5425 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-14 11:27:31,366 INFO L231 Difference]: Finished difference. Result has 506 places, 421 transitions, 4547 flow [2024-06-14 11:27:31,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4547, PETRI_PLACES=506, PETRI_TRANSITIONS=421} [2024-06-14 11:27:31,366 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-14 11:27:31,366 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 421 transitions, 4547 flow [2024-06-14 11:27:31,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:31,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:31,367 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] [2024-06-14 11:27:31,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 11:27:31,367 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)] === [2024-06-14 11:27:31,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:31,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1202847176, now seen corresponding path program 11 times [2024-06-14 11:27:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796230636] [2024-06-14 11:27:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796230636] [2024-06-14 11:27:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796230636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:32,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:32,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:32,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107090972] [2024-06-14 11:27:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:32,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:33,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:33,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 421 transitions, 4547 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:33,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:33,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:33,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:34,030 INFO L124 PetriNetUnfolderBase]: 1245/2249 cut-off events. [2024-06-14 11:27:34,030 INFO L125 PetriNetUnfolderBase]: For 166713/166713 co-relation queries the response was YES. [2024-06-14 11:27:34,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12543 conditions, 2249 events. 1245/2249 cut-off events. For 166713/166713 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13924 event pairs, 247 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 12315. Up to 2115 conditions per place. [2024-06-14 11:27:34,065 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 415 selfloop transitions, 30 changer transitions 0/447 dead transitions. [2024-06-14 11:27:34,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 447 transitions, 5553 flow [2024-06-14 11:27:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:27:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:27:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-14 11:27:34,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.317016317016317 [2024-06-14 11:27:34,066 INFO L175 Difference]: Start difference. First operand has 506 places, 421 transitions, 4547 flow. Second operand 13 states and 136 transitions. [2024-06-14 11:27:34,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 447 transitions, 5553 flow [2024-06-14 11:27:35,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 447 transitions, 5453 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-14 11:27:35,403 INFO L231 Difference]: Finished difference. Result has 509 places, 422 transitions, 4563 flow [2024-06-14 11:27:35,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4563, PETRI_PLACES=509, PETRI_TRANSITIONS=422} [2024-06-14 11:27:35,403 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-14 11:27:35,403 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 422 transitions, 4563 flow [2024-06-14 11:27:35,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:35,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:35,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:35,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 11:27:35,404 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)] === [2024-06-14 11:27:35,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 418921483, now seen corresponding path program 2 times [2024-06-14 11:27:35,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:35,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129344420] [2024-06-14 11:27:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129344420] [2024-06-14 11:27:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129344420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:37,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462930429] [2024-06-14 11:27:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:37,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:37,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 422 transitions, 4563 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:37,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:37,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:37,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:38,559 INFO L124 PetriNetUnfolderBase]: 1243/2246 cut-off events. [2024-06-14 11:27:38,559 INFO L125 PetriNetUnfolderBase]: For 147987/147987 co-relation queries the response was YES. [2024-06-14 11:27:38,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 2246 events. 1243/2246 cut-off events. For 147987/147987 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13883 event pairs, 257 based on Foata normal form. 1/2247 useless extension candidates. Maximal degree in co-relation 12082. Up to 2118 conditions per place. [2024-06-14 11:27:38,594 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 402 selfloop transitions, 40 changer transitions 0/444 dead transitions. [2024-06-14 11:27:38,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 444 transitions, 5513 flow [2024-06-14 11:27:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:27:38,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 11:27:38,595 INFO L175 Difference]: Start difference. First operand has 509 places, 422 transitions, 4563 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:27:38,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 444 transitions, 5513 flow [2024-06-14 11:27:39,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 444 transitions, 5387 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-14 11:27:39,970 INFO L231 Difference]: Finished difference. Result has 510 places, 422 transitions, 4525 flow [2024-06-14 11:27:39,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4525, PETRI_PLACES=510, PETRI_TRANSITIONS=422} [2024-06-14 11:27:39,970 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-14 11:27:39,970 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 422 transitions, 4525 flow [2024-06-14 11:27:39,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:39,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:39,971 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] [2024-06-14 11:27:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 11:27:39,971 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)] === [2024-06-14 11:27:39,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 563021542, now seen corresponding path program 2 times [2024-06-14 11:27:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:39,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919807178] [2024-06-14 11:27:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919807178] [2024-06-14 11:27:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919807178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:41,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:41,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440055605] [2024-06-14 11:27:41,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:41,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:41,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:42,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:42,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 422 transitions, 4525 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:42,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:42,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:43,067 INFO L124 PetriNetUnfolderBase]: 1259/2282 cut-off events. [2024-06-14 11:27:43,067 INFO L125 PetriNetUnfolderBase]: For 237248/237248 co-relation queries the response was YES. [2024-06-14 11:27:43,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12399 conditions, 2282 events. 1259/2282 cut-off events. For 237248/237248 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14146 event pairs, 261 based on Foata normal form. 10/2292 useless extension candidates. Maximal degree in co-relation 12169. Up to 2127 conditions per place. [2024-06-14 11:27:43,099 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 409 selfloop transitions, 28 changer transitions 11/450 dead transitions. [2024-06-14 11:27:43,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 450 transitions, 5543 flow [2024-06-14 11:27:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:27:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:27:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-14 11:27:43,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32867132867132864 [2024-06-14 11:27:43,100 INFO L175 Difference]: Start difference. First operand has 510 places, 422 transitions, 4525 flow. Second operand 13 states and 141 transitions. [2024-06-14 11:27:43,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 450 transitions, 5543 flow [2024-06-14 11:27:44,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 450 transitions, 5378 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:44,477 INFO L231 Difference]: Finished difference. Result has 511 places, 419 transitions, 4372 flow [2024-06-14 11:27:44,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4372, PETRI_PLACES=511, PETRI_TRANSITIONS=419} [2024-06-14 11:27:44,477 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-14 11:27:44,477 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 419 transitions, 4372 flow [2024-06-14 11:27:44,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:44,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:44,478 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] [2024-06-14 11:27:44,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 11:27:44,478 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)] === [2024-06-14 11:27:44,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -369937158, now seen corresponding path program 12 times [2024-06-14 11:27:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:44,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722140441] [2024-06-14 11:27:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:46,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:46,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722140441] [2024-06-14 11:27:46,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722140441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:46,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:46,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106620211] [2024-06-14 11:27:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:46,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:46,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 419 transitions, 4372 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:46,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:46,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:46,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:47,368 INFO L124 PetriNetUnfolderBase]: 1237/2240 cut-off events. [2024-06-14 11:27:47,369 INFO L125 PetriNetUnfolderBase]: For 161837/161837 co-relation queries the response was YES. [2024-06-14 11:27:47,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 2240 events. 1237/2240 cut-off events. For 161837/161837 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 13875 event pairs, 240 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 11940. Up to 2059 conditions per place. [2024-06-14 11:27:47,403 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 52 changer transitions 0/441 dead transitions. [2024-06-14 11:27:47,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 441 transitions, 5362 flow [2024-06-14 11:27:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:27:47,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:27:47,404 INFO L175 Difference]: Start difference. First operand has 511 places, 419 transitions, 4372 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:27:47,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 441 transitions, 5362 flow [2024-06-14 11:27:48,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 441 transitions, 5281 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:48,620 INFO L231 Difference]: Finished difference. Result has 508 places, 420 transitions, 4453 flow [2024-06-14 11:27:48,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4291, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4453, PETRI_PLACES=508, PETRI_TRANSITIONS=420} [2024-06-14 11:27:48,621 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-14 11:27:48,621 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 420 transitions, 4453 flow [2024-06-14 11:27:48,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:48,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:48,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:27:48,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 11:27:48,621 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)] === [2024-06-14 11:27:48,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash -369942738, now seen corresponding path program 13 times [2024-06-14 11:27:48,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882852251] [2024-06-14 11:27:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882852251] [2024-06-14 11:27:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882852251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:50,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198987294] [2024-06-14 11:27:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:50,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:50,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 420 transitions, 4453 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:50,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:50,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:50,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:51,294 INFO L124 PetriNetUnfolderBase]: 1241/2248 cut-off events. [2024-06-14 11:27:51,294 INFO L125 PetriNetUnfolderBase]: For 159118/159118 co-relation queries the response was YES. [2024-06-14 11:27:51,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 2248 events. 1241/2248 cut-off events. For 159118/159118 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13928 event pairs, 238 based on Foata normal form. 2/2250 useless extension candidates. Maximal degree in co-relation 12075. Up to 2053 conditions per place. [2024-06-14 11:27:51,327 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 53 changer transitions 0/442 dead transitions. [2024-06-14 11:27:51,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 442 transitions, 5445 flow [2024-06-14 11:27:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 11:27:51,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-14 11:27:51,329 INFO L175 Difference]: Start difference. First operand has 508 places, 420 transitions, 4453 flow. Second operand 12 states and 133 transitions. [2024-06-14 11:27:51,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 442 transitions, 5445 flow [2024-06-14 11:27:52,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 442 transitions, 5280 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-14 11:27:52,715 INFO L231 Difference]: Finished difference. Result has 508 places, 421 transitions, 4454 flow [2024-06-14 11:27:52,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4454, PETRI_PLACES=508, PETRI_TRANSITIONS=421} [2024-06-14 11:27:52,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-14 11:27:52,716 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 421 transitions, 4454 flow [2024-06-14 11:27:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:52,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:52,716 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] [2024-06-14 11:27:52,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 11:27:52,716 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)] === [2024-06-14 11:27:52,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 280439760, now seen corresponding path program 14 times [2024-06-14 11:27:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558774735] [2024-06-14 11:27:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558774735] [2024-06-14 11:27:54,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558774735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:54,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:54,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:54,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307646639] [2024-06-14 11:27:54,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:54,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:54,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:54,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:54,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:54,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:54,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 421 transitions, 4454 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:54,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:54,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:54,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:55,742 INFO L124 PetriNetUnfolderBase]: 1245/2256 cut-off events. [2024-06-14 11:27:55,742 INFO L125 PetriNetUnfolderBase]: For 159475/159475 co-relation queries the response was YES. [2024-06-14 11:27:55,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 2256 events. 1245/2256 cut-off events. For 159475/159475 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14009 event pairs, 220 based on Foata normal form. 2/2258 useless extension candidates. Maximal degree in co-relation 12097. Up to 1920 conditions per place. [2024-06-14 11:27:55,775 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 357 selfloop transitions, 89 changer transitions 0/448 dead transitions. [2024-06-14 11:27:55,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 448 transitions, 5484 flow [2024-06-14 11:27:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:27:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:27:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-14 11:27:55,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34265734265734266 [2024-06-14 11:27:55,776 INFO L175 Difference]: Start difference. First operand has 508 places, 421 transitions, 4454 flow. Second operand 13 states and 147 transitions. [2024-06-14 11:27:55,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 448 transitions, 5484 flow [2024-06-14 11:27:57,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 448 transitions, 5328 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 11:27:57,171 INFO L231 Difference]: Finished difference. Result has 511 places, 422 transitions, 4538 flow [2024-06-14 11:27:57,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4538, PETRI_PLACES=511, PETRI_TRANSITIONS=422} [2024-06-14 11:27:57,172 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-14 11:27:57,172 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 422 transitions, 4538 flow [2024-06-14 11:27:57,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:57,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:27:57,172 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] [2024-06-14 11:27:57,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 11:27:57,173 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)] === [2024-06-14 11:27:57,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:27:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -370086888, now seen corresponding path program 15 times [2024-06-14 11:27:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:27:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021019431] [2024-06-14 11:27:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:27:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:27:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:27:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:27:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:27:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021019431] [2024-06-14 11:27:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021019431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:27:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:27:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:27:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123898585] [2024-06-14 11:27:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:27:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:27:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:27:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:27:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:27:58,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:27:58,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 422 transitions, 4538 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:27:58,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:27:58,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:27:58,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:27:59,804 INFO L124 PetriNetUnfolderBase]: 1249/2264 cut-off events. [2024-06-14 11:27:59,804 INFO L125 PetriNetUnfolderBase]: For 162162/162162 co-relation queries the response was YES. [2024-06-14 11:27:59,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12468 conditions, 2264 events. 1249/2264 cut-off events. For 162162/162162 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14108 event pairs, 240 based on Foata normal form. 2/2266 useless extension candidates. Maximal degree in co-relation 12238. Up to 2083 conditions per place. [2024-06-14 11:27:59,840 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 392 selfloop transitions, 50 changer transitions 0/444 dead transitions. [2024-06-14 11:27:59,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 444 transitions, 5536 flow [2024-06-14 11:27:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:27:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:27:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:27:59,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 11:27:59,845 INFO L175 Difference]: Start difference. First operand has 511 places, 422 transitions, 4538 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:27:59,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 444 transitions, 5536 flow [2024-06-14 11:28:01,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 444 transitions, 5312 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 11:28:01,393 INFO L231 Difference]: Finished difference. Result has 513 places, 423 transitions, 4478 flow [2024-06-14 11:28:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4478, PETRI_PLACES=513, PETRI_TRANSITIONS=423} [2024-06-14 11:28:01,394 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-14 11:28:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 423 transitions, 4478 flow [2024-06-14 11:28:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:01,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:01,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:28:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 11:28:01,394 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)] === [2024-06-14 11:28:01,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -919394714, now seen corresponding path program 16 times [2024-06-14 11:28:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338277495] [2024-06-14 11:28:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338277495] [2024-06-14 11:28:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338277495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:02,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:02,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409383457] [2024-06-14 11:28:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:02,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:02,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:02,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 423 transitions, 4478 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:02,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:02,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:02,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:03,842 INFO L124 PetriNetUnfolderBase]: 1253/2272 cut-off events. [2024-06-14 11:28:03,842 INFO L125 PetriNetUnfolderBase]: For 164200/164200 co-relation queries the response was YES. [2024-06-14 11:28:03,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12428 conditions, 2272 events. 1253/2272 cut-off events. For 164200/164200 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 14171 event pairs, 240 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 12197. Up to 2091 conditions per place. [2024-06-14 11:28:03,876 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 394 selfloop transitions, 49 changer transitions 0/445 dead transitions. [2024-06-14 11:28:03,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 445 transitions, 5478 flow [2024-06-14 11:28:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:28:03,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-14 11:28:03,877 INFO L175 Difference]: Start difference. First operand has 513 places, 423 transitions, 4478 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:28:03,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 445 transitions, 5478 flow [2024-06-14 11:28:05,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 445 transitions, 5324 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-14 11:28:05,106 INFO L231 Difference]: Finished difference. Result has 515 places, 424 transitions, 4488 flow [2024-06-14 11:28:05,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4488, PETRI_PLACES=515, PETRI_TRANSITIONS=424} [2024-06-14 11:28:05,107 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-14 11:28:05,107 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 424 transitions, 4488 flow [2024-06-14 11:28:05,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:05,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:05,107 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] [2024-06-14 11:28:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 11:28:05,107 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)] === [2024-06-14 11:28:05,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash 280434180, now seen corresponding path program 17 times [2024-06-14 11:28:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335527439] [2024-06-14 11:28:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:05,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:07,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335527439] [2024-06-14 11:28:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335527439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:07,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:07,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42575822] [2024-06-14 11:28:07,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:07,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:07,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:07,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 424 transitions, 4488 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:07,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:07,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:07,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:08,468 INFO L124 PetriNetUnfolderBase]: 1293/2352 cut-off events. [2024-06-14 11:28:08,468 INFO L125 PetriNetUnfolderBase]: For 291504/291504 co-relation queries the response was YES. [2024-06-14 11:28:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14674 conditions, 2352 events. 1293/2352 cut-off events. For 291504/291504 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 14693 event pairs, 242 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 14442. Up to 1875 conditions per place. [2024-06-14 11:28:08,503 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 356 selfloop transitions, 97 changer transitions 0/455 dead transitions. [2024-06-14 11:28:08,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 455 transitions, 5936 flow [2024-06-14 11:28:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:28:08,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-14 11:28:08,505 INFO L175 Difference]: Start difference. First operand has 515 places, 424 transitions, 4488 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:28:08,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 455 transitions, 5936 flow [2024-06-14 11:28:10,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 455 transitions, 5782 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-14 11:28:10,139 INFO L231 Difference]: Finished difference. Result has 517 places, 426 transitions, 4658 flow [2024-06-14 11:28:10,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4658, PETRI_PLACES=517, PETRI_TRANSITIONS=426} [2024-06-14 11:28:10,140 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-14 11:28:10,140 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 426 transitions, 4658 flow [2024-06-14 11:28:10,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:10,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:10,140 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] [2024-06-14 11:28:10,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 11:28:10,140 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)] === [2024-06-14 11:28:10,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -225836882, now seen corresponding path program 3 times [2024-06-14 11:28:10,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:10,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306698825] [2024-06-14 11:28:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:12,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:12,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306698825] [2024-06-14 11:28:12,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306698825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:12,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:12,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982989015] [2024-06-14 11:28:12,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:12,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:12,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:12,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 426 transitions, 4658 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:12,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:12,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:12,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:13,252 INFO L124 PetriNetUnfolderBase]: 1309/2388 cut-off events. [2024-06-14 11:28:13,252 INFO L125 PetriNetUnfolderBase]: For 376649/376649 co-relation queries the response was YES. [2024-06-14 11:28:13,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14878 conditions, 2388 events. 1309/2388 cut-off events. For 376649/376649 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14946 event pairs, 272 based on Foata normal form. 10/2398 useless extension candidates. Maximal degree in co-relation 14645. Up to 2163 conditions per place. [2024-06-14 11:28:13,286 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 390 selfloop transitions, 50 changer transitions 11/453 dead transitions. [2024-06-14 11:28:13,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 453 transitions, 5678 flow [2024-06-14 11:28:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:28:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:28:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-14 11:28:13,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356643356643357 [2024-06-14 11:28:13,287 INFO L175 Difference]: Start difference. First operand has 517 places, 426 transitions, 4658 flow. Second operand 13 states and 144 transitions. [2024-06-14 11:28:13,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 453 transitions, 5678 flow [2024-06-14 11:28:15,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 453 transitions, 5492 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 11:28:15,880 INFO L231 Difference]: Finished difference. Result has 522 places, 423 transitions, 4538 flow [2024-06-14 11:28:15,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4472, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4538, PETRI_PLACES=522, PETRI_TRANSITIONS=423} [2024-06-14 11:28:15,880 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 490 predicate places. [2024-06-14 11:28:15,880 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 423 transitions, 4538 flow [2024-06-14 11:28:15,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:15,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:15,881 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] [2024-06-14 11:28:15,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 11:28:15,881 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)] === [2024-06-14 11:28:15,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash 833524316, now seen corresponding path program 18 times [2024-06-14 11:28:15,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:15,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130419719] [2024-06-14 11:28:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:15,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:17,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:17,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130419719] [2024-06-14 11:28:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130419719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:17,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:17,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:17,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43233004] [2024-06-14 11:28:17,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:17,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:17,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:17,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 423 transitions, 4538 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:17,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:17,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:17,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:18,783 INFO L124 PetriNetUnfolderBase]: 1304/2389 cut-off events. [2024-06-14 11:28:18,783 INFO L125 PetriNetUnfolderBase]: For 440488/440488 co-relation queries the response was YES. [2024-06-14 11:28:18,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14426 conditions, 2389 events. 1304/2389 cut-off events. For 440488/440488 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14987 event pairs, 255 based on Foata normal form. 18/2407 useless extension candidates. Maximal degree in co-relation 14191. Up to 1995 conditions per place. [2024-06-14 11:28:18,820 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 351 selfloop transitions, 84 changer transitions 17/454 dead transitions. [2024-06-14 11:28:18,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 454 transitions, 5582 flow [2024-06-14 11:28:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:28:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:28:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-14 11:28:18,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-14 11:28:18,821 INFO L175 Difference]: Start difference. First operand has 522 places, 423 transitions, 4538 flow. Second operand 13 states and 151 transitions. [2024-06-14 11:28:18,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 454 transitions, 5582 flow [2024-06-14 11:28:21,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 454 transitions, 5476 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:28:21,368 INFO L231 Difference]: Finished difference. Result has 521 places, 416 transitions, 4463 flow [2024-06-14 11:28:21,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4432, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4463, PETRI_PLACES=521, PETRI_TRANSITIONS=416} [2024-06-14 11:28:21,368 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 489 predicate places. [2024-06-14 11:28:21,368 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 416 transitions, 4463 flow [2024-06-14 11:28:21,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:21,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:21,369 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] [2024-06-14 11:28:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 11:28:21,369 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)] === [2024-06-14 11:28:21,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:21,369 INFO L85 PathProgramCache]: Analyzing trace with hash 826382412, now seen corresponding path program 4 times [2024-06-14 11:28:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425459597] [2024-06-14 11:28:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425459597] [2024-06-14 11:28:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425459597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:23,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108482304] [2024-06-14 11:28:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:23,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:23,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:23,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:23,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 416 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:23,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:23,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:23,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:24,172 INFO L124 PetriNetUnfolderBase]: 1276/2337 cut-off events. [2024-06-14 11:28:24,172 INFO L125 PetriNetUnfolderBase]: For 355940/355940 co-relation queries the response was YES. [2024-06-14 11:28:24,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14160 conditions, 2337 events. 1276/2337 cut-off events. For 355940/355940 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14617 event pairs, 249 based on Foata normal form. 10/2347 useless extension candidates. Maximal degree in co-relation 13925. Up to 2016 conditions per place. [2024-06-14 11:28:24,208 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 359 selfloop transitions, 76 changer transitions 9/446 dead transitions. [2024-06-14 11:28:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 446 transitions, 5485 flow [2024-06-14 11:28:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:28:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:28:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-14 11:28:24,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-14 11:28:24,209 INFO L175 Difference]: Start difference. First operand has 521 places, 416 transitions, 4463 flow. Second operand 13 states and 149 transitions. [2024-06-14 11:28:24,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 446 transitions, 5485 flow [2024-06-14 11:28:26,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 446 transitions, 5289 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 11:28:26,015 INFO L231 Difference]: Finished difference. Result has 517 places, 413 transitions, 4390 flow [2024-06-14 11:28:26,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4390, PETRI_PLACES=517, PETRI_TRANSITIONS=413} [2024-06-14 11:28:26,016 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-14 11:28:26,016 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 413 transitions, 4390 flow [2024-06-14 11:28:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:26,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:26,016 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] [2024-06-14 11:28:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 11:28:26,017 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)] === [2024-06-14 11:28:26,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 833791722, now seen corresponding path program 5 times [2024-06-14 11:28:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712353647] [2024-06-14 11:28:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:28,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712353647] [2024-06-14 11:28:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712353647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:28,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:28,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43327075] [2024-06-14 11:28:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:28,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:28,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:28,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:28,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 413 transitions, 4390 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:28,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:28,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:28,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:29,243 INFO L124 PetriNetUnfolderBase]: 1237/2264 cut-off events. [2024-06-14 11:28:29,243 INFO L125 PetriNetUnfolderBase]: For 248163/248163 co-relation queries the response was YES. [2024-06-14 11:28:29,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 2264 events. 1237/2264 cut-off events. For 248163/248163 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14144 event pairs, 230 based on Foata normal form. 10/2274 useless extension candidates. Maximal degree in co-relation 12054. Up to 1883 conditions per place. [2024-06-14 11:28:29,278 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 342 selfloop transitions, 86 changer transitions 12/442 dead transitions. [2024-06-14 11:28:29,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 442 transitions, 5404 flow [2024-06-14 11:28:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 11:28:29,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-14 11:28:29,279 INFO L175 Difference]: Start difference. First operand has 517 places, 413 transitions, 4390 flow. Second operand 12 states and 142 transitions. [2024-06-14 11:28:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 442 transitions, 5404 flow [2024-06-14 11:28:30,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 442 transitions, 5240 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:28:30,523 INFO L231 Difference]: Finished difference. Result has 514 places, 409 transitions, 4350 flow [2024-06-14 11:28:30,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4350, PETRI_PLACES=514, PETRI_TRANSITIONS=409} [2024-06-14 11:28:30,523 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-14 11:28:30,524 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 409 transitions, 4350 flow [2024-06-14 11:28:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:30,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:30,524 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] [2024-06-14 11:28:30,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 11:28:30,524 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)] === [2024-06-14 11:28:30,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash 833801022, now seen corresponding path program 6 times [2024-06-14 11:28:30,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:30,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199025137] [2024-06-14 11:28:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:32,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199025137] [2024-06-14 11:28:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199025137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:32,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306439220] [2024-06-14 11:28:32,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:32,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:32,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:32,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 409 transitions, 4350 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:32,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:32,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:32,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:33,818 INFO L124 PetriNetUnfolderBase]: 1259/2314 cut-off events. [2024-06-14 11:28:33,818 INFO L125 PetriNetUnfolderBase]: For 352345/352345 co-relation queries the response was YES. [2024-06-14 11:28:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14366 conditions, 2314 events. 1259/2314 cut-off events. For 352345/352345 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14485 event pairs, 240 based on Foata normal form. 8/2322 useless extension candidates. Maximal degree in co-relation 14133. Up to 1817 conditions per place. [2024-06-14 11:28:33,851 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 340 selfloop transitions, 87 changer transitions 15/444 dead transitions. [2024-06-14 11:28:33,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 444 transitions, 5768 flow [2024-06-14 11:28:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:28:33,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-14 11:28:33,852 INFO L175 Difference]: Start difference. First operand has 514 places, 409 transitions, 4350 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:28:33,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 444 transitions, 5768 flow [2024-06-14 11:28:35,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 444 transitions, 5588 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:28:35,844 INFO L231 Difference]: Finished difference. Result has 514 places, 402 transitions, 4308 flow [2024-06-14 11:28:35,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4308, PETRI_PLACES=514, PETRI_TRANSITIONS=402} [2024-06-14 11:28:35,844 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-14 11:28:35,844 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 402 transitions, 4308 flow [2024-06-14 11:28:35,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:35,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:35,845 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] [2024-06-14 11:28:35,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 11:28:35,845 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:28:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 626870876, now seen corresponding path program 19 times [2024-06-14 11:28:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719107760] [2024-06-14 11:28:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:37,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719107760] [2024-06-14 11:28:37,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719107760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:37,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:37,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:37,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751172630] [2024-06-14 11:28:37,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:37,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:37,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:37,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:37,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:37,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 402 transitions, 4308 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:37,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:37,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:37,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:38,861 INFO L124 PetriNetUnfolderBase]: 1216/2229 cut-off events. [2024-06-14 11:28:38,861 INFO L125 PetriNetUnfolderBase]: For 271189/271189 co-relation queries the response was YES. [2024-06-14 11:28:38,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13589 conditions, 2229 events. 1216/2229 cut-off events. For 271189/271189 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13825 event pairs, 241 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 13371. Up to 2007 conditions per place. [2024-06-14 11:28:38,897 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 359 selfloop transitions, 64 changer transitions 0/425 dead transitions. [2024-06-14 11:28:38,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 425 transitions, 5224 flow [2024-06-14 11:28:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:28:38,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-06-14 11:28:38,898 INFO L175 Difference]: Start difference. First operand has 514 places, 402 transitions, 4308 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:28:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 425 transitions, 5224 flow [2024-06-14 11:28:40,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 425 transitions, 5018 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-06-14 11:28:40,846 INFO L231 Difference]: Finished difference. Result has 504 places, 402 transitions, 4234 flow [2024-06-14 11:28:40,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4234, PETRI_PLACES=504, PETRI_TRANSITIONS=402} [2024-06-14 11:28:40,846 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:28:40,846 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 402 transitions, 4234 flow [2024-06-14 11:28:40,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:40,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:40,846 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] [2024-06-14 11:28:40,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 11:28:40,846 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:28:40,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash 626865296, now seen corresponding path program 20 times [2024-06-14 11:28:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323387062] [2024-06-14 11:28:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323387062] [2024-06-14 11:28:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323387062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:42,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:42,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582676747] [2024-06-14 11:28:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:42,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:42,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:42,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 402 transitions, 4234 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:42,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:42,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:42,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:43,600 INFO L124 PetriNetUnfolderBase]: 1220/2237 cut-off events. [2024-06-14 11:28:43,600 INFO L125 PetriNetUnfolderBase]: For 261915/261915 co-relation queries the response was YES. [2024-06-14 11:28:43,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13564 conditions, 2237 events. 1220/2237 cut-off events. For 261915/261915 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13883 event pairs, 241 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 13351. Up to 2015 conditions per place. [2024-06-14 11:28:43,635 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 361 selfloop transitions, 63 changer transitions 0/426 dead transitions. [2024-06-14 11:28:43,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 426 transitions, 5212 flow [2024-06-14 11:28:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 11:28:43,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-14 11:28:43,636 INFO L175 Difference]: Start difference. First operand has 504 places, 402 transitions, 4234 flow. Second operand 12 states and 133 transitions. [2024-06-14 11:28:43,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 426 transitions, 5212 flow [2024-06-14 11:28:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 426 transitions, 5011 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-14 11:28:45,804 INFO L231 Difference]: Finished difference. Result has 505 places, 403 transitions, 4227 flow [2024-06-14 11:28:45,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4227, PETRI_PLACES=505, PETRI_TRANSITIONS=403} [2024-06-14 11:28:45,805 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-14 11:28:45,805 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 403 transitions, 4227 flow [2024-06-14 11:28:45,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:45,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:45,805 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] [2024-06-14 11:28:45,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 11:28:45,806 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:28:45,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash 626721146, now seen corresponding path program 21 times [2024-06-14 11:28:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055990138] [2024-06-14 11:28:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055990138] [2024-06-14 11:28:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055990138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:47,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:47,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:47,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144192262] [2024-06-14 11:28:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:47,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:47,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:47,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 403 transitions, 4227 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:47,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:47,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:47,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:48,565 INFO L124 PetriNetUnfolderBase]: 1224/2245 cut-off events. [2024-06-14 11:28:48,565 INFO L125 PetriNetUnfolderBase]: For 265558/265558 co-relation queries the response was YES. [2024-06-14 11:28:48,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13596 conditions, 2245 events. 1224/2245 cut-off events. For 265558/265558 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13932 event pairs, 239 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 13382. Up to 2023 conditions per place. [2024-06-14 11:28:48,596 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 62 changer transitions 0/427 dead transitions. [2024-06-14 11:28:48,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 427 transitions, 5207 flow [2024-06-14 11:28:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:28:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:28:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:28:48,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:28:48,597 INFO L175 Difference]: Start difference. First operand has 505 places, 403 transitions, 4227 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:28:48,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 427 transitions, 5207 flow [2024-06-14 11:28:50,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 427 transitions, 5023 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-14 11:28:50,819 INFO L231 Difference]: Finished difference. Result has 507 places, 404 transitions, 4237 flow [2024-06-14 11:28:50,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4237, PETRI_PLACES=507, PETRI_TRANSITIONS=404} [2024-06-14 11:28:50,820 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-14 11:28:50,820 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 404 transitions, 4237 flow [2024-06-14 11:28:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:50,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:50,820 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] [2024-06-14 11:28:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 11:28:50,820 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:28:50,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 632443002, now seen corresponding path program 7 times [2024-06-14 11:28:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174275618] [2024-06-14 11:28:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174275618] [2024-06-14 11:28:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174275618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:53,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:53,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:53,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878956298] [2024-06-14 11:28:53,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:53,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:53,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:53,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:53,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 404 transitions, 4237 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:53,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:53,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:53,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:54,115 INFO L124 PetriNetUnfolderBase]: 1241/2288 cut-off events. [2024-06-14 11:28:54,116 INFO L125 PetriNetUnfolderBase]: For 391105/391105 co-relation queries the response was YES. [2024-06-14 11:28:54,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 2288 events. 1241/2288 cut-off events. For 391105/391105 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14269 event pairs, 252 based on Foata normal form. 16/2304 useless extension candidates. Maximal degree in co-relation 13195. Up to 1992 conditions per place. [2024-06-14 11:28:54,150 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 355 selfloop transitions, 60 changer transitions 16/433 dead transitions. [2024-06-14 11:28:54,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 433 transitions, 5227 flow [2024-06-14 11:28:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:28:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:28:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-14 11:28:54,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34265734265734266 [2024-06-14 11:28:54,151 INFO L175 Difference]: Start difference. First operand has 507 places, 404 transitions, 4237 flow. Second operand 13 states and 147 transitions. [2024-06-14 11:28:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 433 transitions, 5227 flow [2024-06-14 11:28:56,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 433 transitions, 5043 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-14 11:28:56,279 INFO L231 Difference]: Finished difference. Result has 510 places, 398 transitions, 4107 flow [2024-06-14 11:28:56,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4107, PETRI_PLACES=510, PETRI_TRANSITIONS=398} [2024-06-14 11:28:56,279 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-14 11:28:56,279 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 398 transitions, 4107 flow [2024-06-14 11:28:56,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:56,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:28:56,280 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] [2024-06-14 11:28:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 11:28:56,280 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:28:56,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:28:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash -879084374, now seen corresponding path program 22 times [2024-06-14 11:28:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:28:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249555933] [2024-06-14 11:28:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:28:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:28:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:28:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:28:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:28:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249555933] [2024-06-14 11:28:57,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249555933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:28:57,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:28:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:28:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045844766] [2024-06-14 11:28:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:28:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:28:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:28:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:28:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:28:57,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:28:57,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 398 transitions, 4107 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:28:57,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:28:57,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:28:57,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:28:58,851 INFO L124 PetriNetUnfolderBase]: 1201/2208 cut-off events. [2024-06-14 11:28:58,852 INFO L125 PetriNetUnfolderBase]: For 249915/249915 co-relation queries the response was YES. [2024-06-14 11:28:58,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13056 conditions, 2208 events. 1201/2208 cut-off events. For 249915/249915 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13701 event pairs, 306 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 12840. Up to 1993 conditions per place. [2024-06-14 11:28:58,884 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 66 changer transitions 0/418 dead transitions. [2024-06-14 11:28:58,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 418 transitions, 5057 flow [2024-06-14 11:28:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:28:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:28:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:28:58,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:28:58,885 INFO L175 Difference]: Start difference. First operand has 510 places, 398 transitions, 4107 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:28:58,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 418 transitions, 5057 flow [2024-06-14 11:29:00,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 418 transitions, 4921 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 11:29:00,697 INFO L231 Difference]: Finished difference. Result has 504 places, 399 transitions, 4181 flow [2024-06-14 11:29:00,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=504, PETRI_TRANSITIONS=399} [2024-06-14 11:29:00,697 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:29:00,697 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 399 transitions, 4181 flow [2024-06-14 11:29:00,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:00,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:00,698 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] [2024-06-14 11:29:00,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 11:29:00,698 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:00,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash 897874314, now seen corresponding path program 23 times [2024-06-14 11:29:00,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:00,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292438168] [2024-06-14 11:29:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:00,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:02,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292438168] [2024-06-14 11:29:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292438168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806410764] [2024-06-14 11:29:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:02,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:02,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 399 transitions, 4181 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:02,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:02,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:02,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:03,492 INFO L124 PetriNetUnfolderBase]: 1205/2216 cut-off events. [2024-06-14 11:29:03,492 INFO L125 PetriNetUnfolderBase]: For 248918/248918 co-relation queries the response was YES. [2024-06-14 11:29:03,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13202 conditions, 2216 events. 1205/2216 cut-off events. For 248918/248918 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13764 event pairs, 299 based on Foata normal form. 2/2218 useless extension candidates. Maximal degree in co-relation 12987. Up to 1953 conditions per place. [2024-06-14 11:29:03,527 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 67 changer transitions 0/419 dead transitions. [2024-06-14 11:29:03,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 419 transitions, 5133 flow [2024-06-14 11:29:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:29:03,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:29:03,529 INFO L175 Difference]: Start difference. First operand has 504 places, 399 transitions, 4181 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:29:03,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 419 transitions, 5133 flow [2024-06-14 11:29:05,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 419 transitions, 4929 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-14 11:29:05,753 INFO L231 Difference]: Finished difference. Result has 505 places, 400 transitions, 4189 flow [2024-06-14 11:29:05,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4189, PETRI_PLACES=505, PETRI_TRANSITIONS=400} [2024-06-14 11:29:05,754 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-14 11:29:05,754 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 400 transitions, 4189 flow [2024-06-14 11:29:05,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:05,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:05,754 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] [2024-06-14 11:29:05,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 11:29:05,754 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:05,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash -879234104, now seen corresponding path program 24 times [2024-06-14 11:29:05,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:05,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346103216] [2024-06-14 11:29:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:05,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:07,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:07,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346103216] [2024-06-14 11:29:07,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346103216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:07,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:07,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:07,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688709292] [2024-06-14 11:29:07,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:07,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:07,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:07,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:07,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 400 transitions, 4189 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:07,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:07,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:07,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:08,627 INFO L124 PetriNetUnfolderBase]: 1209/2224 cut-off events. [2024-06-14 11:29:08,628 INFO L125 PetriNetUnfolderBase]: For 241935/241935 co-relation queries the response was YES. [2024-06-14 11:29:08,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13177 conditions, 2224 events. 1209/2224 cut-off events. For 241935/241935 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13838 event pairs, 298 based on Foata normal form. 2/2226 useless extension candidates. Maximal degree in co-relation 12962. Up to 2017 conditions per place. [2024-06-14 11:29:08,661 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 366 selfloop transitions, 52 changer transitions 0/420 dead transitions. [2024-06-14 11:29:08,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 420 transitions, 5137 flow [2024-06-14 11:29:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:29:08,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-14 11:29:08,662 INFO L175 Difference]: Start difference. First operand has 505 places, 400 transitions, 4189 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:29:08,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 420 transitions, 5137 flow [2024-06-14 11:29:10,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 420 transitions, 4932 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-14 11:29:10,304 INFO L231 Difference]: Finished difference. Result has 505 places, 401 transitions, 4162 flow [2024-06-14 11:29:10,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3988, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4162, PETRI_PLACES=505, PETRI_TRANSITIONS=401} [2024-06-14 11:29:10,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-14 11:29:10,305 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 401 transitions, 4162 flow [2024-06-14 11:29:10,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:10,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:10,305 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] [2024-06-14 11:29:10,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 11:29:10,305 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -882809024, now seen corresponding path program 25 times [2024-06-14 11:29:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690845953] [2024-06-14 11:29:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690845953] [2024-06-14 11:29:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690845953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:11,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:29:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786317892] [2024-06-14 11:29:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:29:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:29:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:29:11,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:11,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 401 transitions, 4162 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:29:11,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:11,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:11,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:12,739 INFO L124 PetriNetUnfolderBase]: 1213/2232 cut-off events. [2024-06-14 11:29:12,739 INFO L125 PetriNetUnfolderBase]: For 238220/238220 co-relation queries the response was YES. [2024-06-14 11:29:12,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 2232 events. 1213/2232 cut-off events. For 238220/238220 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13907 event pairs, 296 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 12927. Up to 2034 conditions per place. [2024-06-14 11:29:12,774 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 376 selfloop transitions, 43 changer transitions 0/421 dead transitions. [2024-06-14 11:29:12,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 421 transitions, 5108 flow [2024-06-14 11:29:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 11:29:12,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-14 11:29:12,775 INFO L175 Difference]: Start difference. First operand has 505 places, 401 transitions, 4162 flow. Second operand 11 states and 114 transitions. [2024-06-14 11:29:12,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 421 transitions, 5108 flow [2024-06-14 11:29:14,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 421 transitions, 4944 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 11:29:14,687 INFO L231 Difference]: Finished difference. Result has 507 places, 402 transitions, 4156 flow [2024-06-14 11:29:14,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4156, PETRI_PLACES=507, PETRI_TRANSITIONS=402} [2024-06-14 11:29:14,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-14 11:29:14,688 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 402 transitions, 4156 flow [2024-06-14 11:29:14,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:29:14,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:14,688 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] [2024-06-14 11:29:14,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 11:29:14,688 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:14,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1611292322, now seen corresponding path program 26 times [2024-06-14 11:29:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283392152] [2024-06-14 11:29:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:14,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283392152] [2024-06-14 11:29:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283392152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:16,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280015654] [2024-06-14 11:29:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:16,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:16,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:16,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:16,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 402 transitions, 4156 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:16,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:16,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:16,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:17,597 INFO L124 PetriNetUnfolderBase]: 1217/2240 cut-off events. [2024-06-14 11:29:17,597 INFO L125 PetriNetUnfolderBase]: For 234864/234864 co-relation queries the response was YES. [2024-06-14 11:29:17,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13137 conditions, 2240 events. 1217/2240 cut-off events. For 234864/234864 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13981 event pairs, 240 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 12922. Up to 1941 conditions per place. [2024-06-14 11:29:17,631 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 368 selfloop transitions, 54 changer transitions 0/424 dead transitions. [2024-06-14 11:29:17,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 424 transitions, 5110 flow [2024-06-14 11:29:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:29:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:29:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 11:29:17,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30808080808080807 [2024-06-14 11:29:17,632 INFO L175 Difference]: Start difference. First operand has 507 places, 402 transitions, 4156 flow. Second operand 12 states and 122 transitions. [2024-06-14 11:29:17,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 424 transitions, 5110 flow [2024-06-14 11:29:19,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 424 transitions, 4966 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 11:29:19,600 INFO L231 Difference]: Finished difference. Result has 510 places, 403 transitions, 4192 flow [2024-06-14 11:29:19,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4192, PETRI_PLACES=510, PETRI_TRANSITIONS=403} [2024-06-14 11:29:19,600 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-14 11:29:19,600 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 403 transitions, 4192 flow [2024-06-14 11:29:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:19,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:19,601 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] [2024-06-14 11:29:19,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 11:29:19,601 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:19,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash 971466688, now seen corresponding path program 8 times [2024-06-14 11:29:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482471118] [2024-06-14 11:29:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482471118] [2024-06-14 11:29:21,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482471118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:21,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395111039] [2024-06-14 11:29:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:21,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:21,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:21,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:21,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 403 transitions, 4192 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:21,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:21,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:21,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:22,557 INFO L124 PetriNetUnfolderBase]: 1233/2276 cut-off events. [2024-06-14 11:29:22,558 INFO L125 PetriNetUnfolderBase]: For 305246/305246 co-relation queries the response was YES. [2024-06-14 11:29:22,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13227 conditions, 2276 events. 1233/2276 cut-off events. For 305246/305246 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 14231 event pairs, 323 based on Foata normal form. 10/2286 useless extension candidates. Maximal degree in co-relation 13011. Up to 2069 conditions per place. [2024-06-14 11:29:22,593 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 374 selfloop transitions, 41 changer transitions 11/428 dead transitions. [2024-06-14 11:29:22,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 428 transitions, 5152 flow [2024-06-14 11:29:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:29:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:29:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:29:22,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-14 11:29:22,594 INFO L175 Difference]: Start difference. First operand has 510 places, 403 transitions, 4192 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:29:22,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 428 transitions, 5152 flow [2024-06-14 11:29:24,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 428 transitions, 4992 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-14 11:29:24,484 INFO L231 Difference]: Finished difference. Result has 512 places, 400 transitions, 4084 flow [2024-06-14 11:29:24,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4084, PETRI_PLACES=512, PETRI_TRANSITIONS=400} [2024-06-14 11:29:24,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-14 11:29:24,484 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 400 transitions, 4084 flow [2024-06-14 11:29:24,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:24,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:24,485 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] [2024-06-14 11:29:24,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 11:29:24,485 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:24,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash 38410935, now seen corresponding path program 3 times [2024-06-14 11:29:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071342226] [2024-06-14 11:29:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:26,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:26,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071342226] [2024-06-14 11:29:26,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071342226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:26,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:26,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074340553] [2024-06-14 11:29:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:26,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:26,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:26,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 400 transitions, 4084 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:26,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:26,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:26,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:27,260 INFO L124 PetriNetUnfolderBase]: 1205/2223 cut-off events. [2024-06-14 11:29:27,260 INFO L125 PetriNetUnfolderBase]: For 202308/202308 co-relation queries the response was YES. [2024-06-14 11:29:27,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 2223 events. 1205/2223 cut-off events. For 202308/202308 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13854 event pairs, 311 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 12407. Up to 2021 conditions per place. [2024-06-14 11:29:27,289 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 348 selfloop transitions, 68 changer transitions 0/418 dead transitions. [2024-06-14 11:29:27,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 418 transitions, 4966 flow [2024-06-14 11:29:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:29:27,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:29:27,297 INFO L175 Difference]: Start difference. First operand has 512 places, 400 transitions, 4084 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:29:27,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 418 transitions, 4966 flow [2024-06-14 11:29:28,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 418 transitions, 4850 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-14 11:29:28,949 INFO L231 Difference]: Finished difference. Result has 509 places, 400 transitions, 4115 flow [2024-06-14 11:29:28,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4115, PETRI_PLACES=509, PETRI_TRANSITIONS=400} [2024-06-14 11:29:28,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-14 11:29:28,950 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 400 transitions, 4115 flow [2024-06-14 11:29:28,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:28,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:28,950 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] [2024-06-14 11:29:28,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 11:29:28,950 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:28,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash 489583116, now seen corresponding path program 27 times [2024-06-14 11:29:28,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:28,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718923180] [2024-06-14 11:29:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:30,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:30,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718923180] [2024-06-14 11:29:30,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718923180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:30,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:30,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068968914] [2024-06-14 11:29:30,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:30,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:30,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:30,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:30,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 400 transitions, 4115 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:30,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:30,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:30,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:31,589 INFO L124 PetriNetUnfolderBase]: 1209/2231 cut-off events. [2024-06-14 11:29:31,589 INFO L125 PetriNetUnfolderBase]: For 212798/212798 co-relation queries the response was YES. [2024-06-14 11:29:31,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 2231 events. 1209/2231 cut-off events. For 212798/212798 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13897 event pairs, 239 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 12539. Up to 1963 conditions per place. [2024-06-14 11:29:31,625 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 77 changer transitions 0/421 dead transitions. [2024-06-14 11:29:31,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 421 transitions, 5065 flow [2024-06-14 11:29:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:29:31,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:29:31,626 INFO L175 Difference]: Start difference. First operand has 509 places, 400 transitions, 4115 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:29:31,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 421 transitions, 5065 flow [2024-06-14 11:29:33,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 421 transitions, 4777 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-14 11:29:33,174 INFO L231 Difference]: Finished difference. Result has 506 places, 401 transitions, 4039 flow [2024-06-14 11:29:33,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4039, PETRI_PLACES=506, PETRI_TRANSITIONS=401} [2024-06-14 11:29:33,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-14 11:29:33,175 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 401 transitions, 4039 flow [2024-06-14 11:29:33,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:33,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:33,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:29:33,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 11:29:33,175 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:33,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash -45652266, now seen corresponding path program 28 times [2024-06-14 11:29:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506632223] [2024-06-14 11:29:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506632223] [2024-06-14 11:29:35,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506632223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:35,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:35,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580817744] [2024-06-14 11:29:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:35,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:35,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 401 transitions, 4039 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:35,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:35,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:35,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:36,007 INFO L124 PetriNetUnfolderBase]: 1213/2239 cut-off events. [2024-06-14 11:29:36,007 INFO L125 PetriNetUnfolderBase]: For 208775/208775 co-relation queries the response was YES. [2024-06-14 11:29:36,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 2239 events. 1213/2239 cut-off events. For 208775/208775 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13995 event pairs, 235 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 12529. Up to 1957 conditions per place. [2024-06-14 11:29:36,042 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 78 changer transitions 0/422 dead transitions. [2024-06-14 11:29:36,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 422 transitions, 4991 flow [2024-06-14 11:29:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:29:36,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:29:36,043 INFO L175 Difference]: Start difference. First operand has 506 places, 401 transitions, 4039 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:29:36,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 422 transitions, 4991 flow [2024-06-14 11:29:37,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 422 transitions, 4789 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:29:37,560 INFO L231 Difference]: Finished difference. Result has 508 places, 402 transitions, 4055 flow [2024-06-14 11:29:37,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=508, PETRI_TRANSITIONS=402} [2024-06-14 11:29:37,561 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-14 11:29:37,561 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 402 transitions, 4055 flow [2024-06-14 11:29:37,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:37,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:37,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:29:37,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 11:29:37,561 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:37,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash -507224918, now seen corresponding path program 29 times [2024-06-14 11:29:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:37,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314975642] [2024-06-14 11:29:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314975642] [2024-06-14 11:29:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314975642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:39,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:39,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948258191] [2024-06-14 11:29:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:39,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:39,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:39,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:39,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 402 transitions, 4055 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:39,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:39,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:39,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:40,460 INFO L124 PetriNetUnfolderBase]: 1217/2247 cut-off events. [2024-06-14 11:29:40,461 INFO L125 PetriNetUnfolderBase]: For 211989/211989 co-relation queries the response was YES. [2024-06-14 11:29:40,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12811 conditions, 2247 events. 1217/2247 cut-off events. For 211989/211989 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 14066 event pairs, 261 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 12595. Up to 2036 conditions per place. [2024-06-14 11:29:40,489 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 359 selfloop transitions, 60 changer transitions 0/421 dead transitions. [2024-06-14 11:29:40,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 421 transitions, 4999 flow [2024-06-14 11:29:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:29:40,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-14 11:29:40,490 INFO L175 Difference]: Start difference. First operand has 508 places, 402 transitions, 4055 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:29:40,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 421 transitions, 4999 flow [2024-06-14 11:29:41,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 421 transitions, 4791 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:29:41,950 INFO L231 Difference]: Finished difference. Result has 510 places, 403 transitions, 4031 flow [2024-06-14 11:29:41,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4031, PETRI_PLACES=510, PETRI_TRANSITIONS=403} [2024-06-14 11:29:41,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-14 11:29:41,951 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 403 transitions, 4031 flow [2024-06-14 11:29:41,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:41,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:41,951 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] [2024-06-14 11:29:41,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-14 11:29:41,951 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:41,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1042460300, now seen corresponding path program 30 times [2024-06-14 11:29:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:41,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940205539] [2024-06-14 11:29:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:41,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940205539] [2024-06-14 11:29:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940205539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:43,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:43,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:43,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174540312] [2024-06-14 11:29:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:43,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:43,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:43,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:43,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 403 transitions, 4031 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:43,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:43,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:43,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:44,960 INFO L124 PetriNetUnfolderBase]: 1221/2255 cut-off events. [2024-06-14 11:29:44,961 INFO L125 PetriNetUnfolderBase]: For 211988/211988 co-relation queries the response was YES. [2024-06-14 11:29:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12798 conditions, 2255 events. 1221/2255 cut-off events. For 211988/211988 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14084 event pairs, 259 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 12581. Up to 2016 conditions per place. [2024-06-14 11:29:44,997 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 358 selfloop transitions, 62 changer transitions 0/422 dead transitions. [2024-06-14 11:29:44,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 422 transitions, 4975 flow [2024-06-14 11:29:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:29:44,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:29:44,998 INFO L175 Difference]: Start difference. First operand has 510 places, 403 transitions, 4031 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:29:44,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 422 transitions, 4975 flow [2024-06-14 11:29:46,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 422 transitions, 4805 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:29:46,695 INFO L231 Difference]: Finished difference. Result has 512 places, 404 transitions, 4049 flow [2024-06-14 11:29:46,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3863, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4049, PETRI_PLACES=512, PETRI_TRANSITIONS=404} [2024-06-14 11:29:46,695 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-14 11:29:46,695 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 404 transitions, 4049 flow [2024-06-14 11:29:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:46,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:46,696 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] [2024-06-14 11:29:46,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-14 11:29:46,696 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:46,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1042604450, now seen corresponding path program 31 times [2024-06-14 11:29:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542540698] [2024-06-14 11:29:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:48,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:48,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542540698] [2024-06-14 11:29:48,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542540698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:48,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:48,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:29:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957024364] [2024-06-14 11:29:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:48,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:29:48,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:29:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:29:48,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:48,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 404 transitions, 4049 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:29:48,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:48,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:48,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:49,076 INFO L124 PetriNetUnfolderBase]: 1225/2263 cut-off events. [2024-06-14 11:29:49,076 INFO L125 PetriNetUnfolderBase]: For 212020/212020 co-relation queries the response was YES. [2024-06-14 11:29:49,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12843 conditions, 2263 events. 1225/2263 cut-off events. For 212020/212020 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 14205 event pairs, 257 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 12625. Up to 2052 conditions per place. [2024-06-14 11:29:49,111 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 364 selfloop transitions, 57 changer transitions 0/423 dead transitions. [2024-06-14 11:29:49,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 423 transitions, 4993 flow [2024-06-14 11:29:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:29:49,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:29:49,112 INFO L175 Difference]: Start difference. First operand has 512 places, 404 transitions, 4049 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:29:49,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 423 transitions, 4993 flow [2024-06-14 11:29:50,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 423 transitions, 4813 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-14 11:29:50,855 INFO L231 Difference]: Finished difference. Result has 513 places, 405 transitions, 4047 flow [2024-06-14 11:29:50,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4047, PETRI_PLACES=513, PETRI_TRANSITIONS=405} [2024-06-14 11:29:50,855 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-14 11:29:50,855 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 405 transitions, 4047 flow [2024-06-14 11:29:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:29:50,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:50,855 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] [2024-06-14 11:29:50,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-14 11:29:50,856 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:50,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -510949568, now seen corresponding path program 32 times [2024-06-14 11:29:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208476167] [2024-06-14 11:29:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208476167] [2024-06-14 11:29:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208476167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:52,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:52,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134187764] [2024-06-14 11:29:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:52,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:52,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:52,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 405 transitions, 4047 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:52,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:52,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:52,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:53,425 INFO L124 PetriNetUnfolderBase]: 1229/2271 cut-off events. [2024-06-14 11:29:53,425 INFO L125 PetriNetUnfolderBase]: For 211970/211970 co-relation queries the response was YES. [2024-06-14 11:29:53,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12859 conditions, 2271 events. 1229/2271 cut-off events. For 211970/211970 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14237 event pairs, 255 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 12641. Up to 2060 conditions per place. [2024-06-14 11:29:53,460 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 367 selfloop transitions, 55 changer transitions 0/424 dead transitions. [2024-06-14 11:29:53,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 424 transitions, 4991 flow [2024-06-14 11:29:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:29:53,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:29:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:29:53,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32231404958677684 [2024-06-14 11:29:53,461 INFO L175 Difference]: Start difference. First operand has 513 places, 405 transitions, 4047 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:29:53,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 424 transitions, 4991 flow [2024-06-14 11:29:55,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 424 transitions, 4825 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:29:55,495 INFO L231 Difference]: Finished difference. Result has 515 places, 406 transitions, 4055 flow [2024-06-14 11:29:55,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=515, PETRI_TRANSITIONS=406} [2024-06-14 11:29:55,495 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-14 11:29:55,495 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 406 transitions, 4055 flow [2024-06-14 11:29:55,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:55,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:29:55,496 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] [2024-06-14 11:29:55,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-14 11:29:55,496 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:29:55,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:29:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash -898354444, now seen corresponding path program 9 times [2024-06-14 11:29:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:29:55,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319264511] [2024-06-14 11:29:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:29:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:29:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:29:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:29:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:29:58,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319264511] [2024-06-14 11:29:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319264511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:29:58,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:29:58,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:29:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848743459] [2024-06-14 11:29:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:29:58,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:29:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:29:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:29:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:29:58,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:29:58,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 406 transitions, 4055 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:29:58,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:29:58,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:29:58,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:29:59,303 INFO L124 PetriNetUnfolderBase]: 1245/2307 cut-off events. [2024-06-14 11:29:59,304 INFO L125 PetriNetUnfolderBase]: For 286291/286291 co-relation queries the response was YES. [2024-06-14 11:29:59,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 2307 events. 1245/2307 cut-off events. For 286291/286291 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14557 event pairs, 273 based on Foata normal form. 10/2317 useless extension candidates. Maximal degree in co-relation 12705. Up to 2038 conditions per place. [2024-06-14 11:29:59,340 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 53 changer transitions 19/430 dead transitions. [2024-06-14 11:29:59,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 430 transitions, 5017 flow [2024-06-14 11:29:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:29:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:29:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 11:29:59,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-14 11:29:59,341 INFO L175 Difference]: Start difference. First operand has 515 places, 406 transitions, 4055 flow. Second operand 12 states and 133 transitions. [2024-06-14 11:29:59,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 430 transitions, 5017 flow [2024-06-14 11:30:00,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 430 transitions, 4857 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:30:00,982 INFO L231 Difference]: Finished difference. Result has 518 places, 397 transitions, 3925 flow [2024-06-14 11:30:00,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3925, PETRI_PLACES=518, PETRI_TRANSITIONS=397} [2024-06-14 11:30:00,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-14 11:30:00,983 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 397 transitions, 3925 flow [2024-06-14 11:30:00,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:00,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:00,983 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] [2024-06-14 11:30:00,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-14 11:30:00,984 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash -45796416, now seen corresponding path program 33 times [2024-06-14 11:30:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404566434] [2024-06-14 11:30:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:02,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404566434] [2024-06-14 11:30:02,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404566434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:02,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:02,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913164618] [2024-06-14 11:30:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:02,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:02,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:02,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 397 transitions, 3925 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:02,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:02,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:02,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:03,802 INFO L124 PetriNetUnfolderBase]: 1203/2229 cut-off events. [2024-06-14 11:30:03,802 INFO L125 PetriNetUnfolderBase]: For 210587/210587 co-relation queries the response was YES. [2024-06-14 11:30:03,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12557 conditions, 2229 events. 1203/2229 cut-off events. For 210587/210587 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13982 event pairs, 239 based on Foata normal form. 2/2231 useless extension candidates. Maximal degree in co-relation 12337. Up to 1947 conditions per place. [2024-06-14 11:30:03,834 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 77 changer transitions 0/418 dead transitions. [2024-06-14 11:30:03,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 418 transitions, 4867 flow [2024-06-14 11:30:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 11:30:03,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-14 11:30:03,835 INFO L175 Difference]: Start difference. First operand has 518 places, 397 transitions, 3925 flow. Second operand 11 states and 120 transitions. [2024-06-14 11:30:03,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 418 transitions, 4867 flow [2024-06-14 11:30:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 418 transitions, 4741 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-14 11:30:05,418 INFO L231 Difference]: Finished difference. Result has 508 places, 398 transitions, 4015 flow [2024-06-14 11:30:05,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4015, PETRI_PLACES=508, PETRI_TRANSITIONS=398} [2024-06-14 11:30:05,419 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-14 11:30:05,419 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 398 transitions, 4015 flow [2024-06-14 11:30:05,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:05,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:05,419 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] [2024-06-14 11:30:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-14 11:30:05,420 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:05,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash 495155242, now seen corresponding path program 10 times [2024-06-14 11:30:05,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:05,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287527403] [2024-06-14 11:30:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:05,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:08,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:08,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287527403] [2024-06-14 11:30:08,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287527403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:08,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:08,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:08,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001549335] [2024-06-14 11:30:08,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:08,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:08,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:08,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:08,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:08,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:08,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 398 transitions, 4015 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:08,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:08,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:09,387 INFO L124 PetriNetUnfolderBase]: 1219/2265 cut-off events. [2024-06-14 11:30:09,387 INFO L125 PetriNetUnfolderBase]: For 267361/267361 co-relation queries the response was YES. [2024-06-14 11:30:09,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12681 conditions, 2265 events. 1219/2265 cut-off events. For 267361/267361 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14240 event pairs, 253 based on Foata normal form. 10/2275 useless extension candidates. Maximal degree in co-relation 12465. Up to 1943 conditions per place. [2024-06-14 11:30:09,421 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 333 selfloop transitions, 73 changer transitions 16/424 dead transitions. [2024-06-14 11:30:09,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 424 transitions, 4973 flow [2024-06-14 11:30:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:30:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:30:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 11:30:09,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 11:30:09,422 INFO L175 Difference]: Start difference. First operand has 508 places, 398 transitions, 4015 flow. Second operand 12 states and 135 transitions. [2024-06-14 11:30:09,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 424 transitions, 4973 flow [2024-06-14 11:30:10,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 424 transitions, 4773 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:30:10,988 INFO L231 Difference]: Finished difference. Result has 511 places, 392 transitions, 3928 flow [2024-06-14 11:30:10,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3928, PETRI_PLACES=511, PETRI_TRANSITIONS=392} [2024-06-14 11:30:10,989 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-14 11:30:10,989 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 392 transitions, 3928 flow [2024-06-14 11:30:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:10,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:10,989 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] [2024-06-14 11:30:10,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-14 11:30:10,990 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:10,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash 696236556, now seen corresponding path program 34 times [2024-06-14 11:30:10,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:10,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357333686] [2024-06-14 11:30:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:12,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357333686] [2024-06-14 11:30:12,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357333686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:12,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:12,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:12,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313781460] [2024-06-14 11:30:12,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:12,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:12,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:12,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:13,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:13,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 392 transitions, 3928 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:13,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:13,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:13,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:13,963 INFO L124 PetriNetUnfolderBase]: 1187/2205 cut-off events. [2024-06-14 11:30:13,964 INFO L125 PetriNetUnfolderBase]: For 198639/198639 co-relation queries the response was YES. [2024-06-14 11:30:13,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 2205 events. 1187/2205 cut-off events. For 198639/198639 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13853 event pairs, 241 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 12201. Up to 1798 conditions per place. [2024-06-14 11:30:13,997 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 307 selfloop transitions, 106 changer transitions 0/415 dead transitions. [2024-06-14 11:30:13,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 415 transitions, 4876 flow [2024-06-14 11:30:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:30:13,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:30:13,998 INFO L175 Difference]: Start difference. First operand has 511 places, 392 transitions, 3928 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:30:13,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 415 transitions, 4876 flow [2024-06-14 11:30:15,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 415 transitions, 4718 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:30:15,732 INFO L231 Difference]: Finished difference. Result has 504 places, 393 transitions, 4038 flow [2024-06-14 11:30:15,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4038, PETRI_PLACES=504, PETRI_TRANSITIONS=393} [2024-06-14 11:30:15,732 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:30:15,732 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 393 transitions, 4038 flow [2024-06-14 11:30:15,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:15,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:15,732 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] [2024-06-14 11:30:15,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-14 11:30:15,732 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:15,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash 161283460, now seen corresponding path program 11 times [2024-06-14 11:30:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249235901] [2024-06-14 11:30:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:18,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249235901] [2024-06-14 11:30:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249235901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:18,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:18,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:18,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661342885] [2024-06-14 11:30:18,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:18,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:18,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:18,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:18,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 393 transitions, 4038 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:18,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:18,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:18,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:19,972 INFO L124 PetriNetUnfolderBase]: 1228/2292 cut-off events. [2024-06-14 11:30:19,972 INFO L125 PetriNetUnfolderBase]: For 323674/323674 co-relation queries the response was YES. [2024-06-14 11:30:20,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14093 conditions, 2292 events. 1228/2292 cut-off events. For 323674/323674 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14405 event pairs, 254 based on Foata normal form. 8/2300 useless extension candidates. Maximal degree in co-relation 13879. Up to 1654 conditions per place. [2024-06-14 11:30:20,009 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 300 selfloop transitions, 115 changer transitions 10/427 dead transitions. [2024-06-14 11:30:20,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 427 transitions, 5322 flow [2024-06-14 11:30:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:30:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:30:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 11:30:20,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:30:20,010 INFO L175 Difference]: Start difference. First operand has 504 places, 393 transitions, 4038 flow. Second operand 12 states and 144 transitions. [2024-06-14 11:30:20,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 427 transitions, 5322 flow [2024-06-14 11:30:22,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 427 transitions, 5066 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:30:22,227 INFO L231 Difference]: Finished difference. Result has 507 places, 389 transitions, 3978 flow [2024-06-14 11:30:22,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3978, PETRI_PLACES=507, PETRI_TRANSITIONS=389} [2024-06-14 11:30:22,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-14 11:30:22,227 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 389 transitions, 3978 flow [2024-06-14 11:30:22,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:22,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:22,228 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] [2024-06-14 11:30:22,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-14 11:30:22,228 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash -63753374, now seen corresponding path program 12 times [2024-06-14 11:30:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624407812] [2024-06-14 11:30:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:24,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624407812] [2024-06-14 11:30:24,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624407812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:24,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:24,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:24,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029852508] [2024-06-14 11:30:24,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:24,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:24,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:24,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:24,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:24,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 389 transitions, 3978 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:24,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:24,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:24,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:25,184 INFO L124 PetriNetUnfolderBase]: 1214/2270 cut-off events. [2024-06-14 11:30:25,184 INFO L125 PetriNetUnfolderBase]: For 344713/344713 co-relation queries the response was YES. [2024-06-14 11:30:25,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 2270 events. 1214/2270 cut-off events. For 344713/344713 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14270 event pairs, 258 based on Foata normal form. 10/2280 useless extension candidates. Maximal degree in co-relation 13753. Up to 1771 conditions per place. [2024-06-14 11:30:25,218 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 293 selfloop transitions, 107 changer transitions 13/415 dead transitions. [2024-06-14 11:30:25,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 415 transitions, 4924 flow [2024-06-14 11:30:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:30:25,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:30:25,219 INFO L175 Difference]: Start difference. First operand has 507 places, 389 transitions, 3978 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:30:25,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 415 transitions, 4924 flow [2024-06-14 11:30:27,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 415 transitions, 4702 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:30:27,327 INFO L231 Difference]: Finished difference. Result has 504 places, 380 transitions, 3904 flow [2024-06-14 11:30:27,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3904, PETRI_PLACES=504, PETRI_TRANSITIONS=380} [2024-06-14 11:30:27,327 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:30:27,327 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 380 transitions, 3904 flow [2024-06-14 11:30:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:27,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:27,327 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] [2024-06-14 11:30:27,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-14 11:30:27,327 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:27,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash 688884906, now seen corresponding path program 35 times [2024-06-14 11:30:27,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:27,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009910026] [2024-06-14 11:30:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:27,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:29,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:29,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009910026] [2024-06-14 11:30:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009910026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:29,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620838741] [2024-06-14 11:30:29,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:29,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:29,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:29,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:29,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 380 transitions, 3904 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:29,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:29,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:29,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:30,262 INFO L124 PetriNetUnfolderBase]: 1177/2203 cut-off events. [2024-06-14 11:30:30,262 INFO L125 PetriNetUnfolderBase]: For 272448/272448 co-relation queries the response was YES. [2024-06-14 11:30:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13727 conditions, 2203 events. 1177/2203 cut-off events. For 272448/272448 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 13820 event pairs, 254 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 13513. Up to 1834 conditions per place. [2024-06-14 11:30:30,291 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 303 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2024-06-14 11:30:30,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 402 transitions, 4820 flow [2024-06-14 11:30:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:30:30,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 11:30:30,292 INFO L175 Difference]: Start difference. First operand has 504 places, 380 transitions, 3904 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:30:30,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 402 transitions, 4820 flow [2024-06-14 11:30:32,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 402 transitions, 4596 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-14 11:30:32,651 INFO L231 Difference]: Finished difference. Result has 497 places, 381 transitions, 3932 flow [2024-06-14 11:30:32,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3932, PETRI_PLACES=497, PETRI_TRANSITIONS=381} [2024-06-14 11:30:32,651 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-14 11:30:32,651 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 381 transitions, 3932 flow [2024-06-14 11:30:32,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:32,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:32,652 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] [2024-06-14 11:30:32,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-14 11:30:32,652 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:32,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash 688879326, now seen corresponding path program 36 times [2024-06-14 11:30:32,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:32,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023391384] [2024-06-14 11:30:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:34,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023391384] [2024-06-14 11:30:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023391384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:34,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:34,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385931191] [2024-06-14 11:30:34,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:34,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:34,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:34,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:34,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 381 transitions, 3932 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:34,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:34,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:34,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:35,435 INFO L124 PetriNetUnfolderBase]: 1181/2211 cut-off events. [2024-06-14 11:30:35,436 INFO L125 PetriNetUnfolderBase]: For 264034/264034 co-relation queries the response was YES. [2024-06-14 11:30:35,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13742 conditions, 2211 events. 1181/2211 cut-off events. For 264034/264034 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 13872 event pairs, 254 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 13531. Up to 1764 conditions per place. [2024-06-14 11:30:35,469 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 297 selfloop transitions, 104 changer transitions 0/403 dead transitions. [2024-06-14 11:30:35,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 403 transitions, 4850 flow [2024-06-14 11:30:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:30:35,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:30:35,470 INFO L175 Difference]: Start difference. First operand has 497 places, 381 transitions, 3932 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:30:35,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 403 transitions, 4850 flow [2024-06-14 11:30:37,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 403 transitions, 4612 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:30:37,381 INFO L231 Difference]: Finished difference. Result has 499 places, 382 transitions, 3962 flow [2024-06-14 11:30:37,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3962, PETRI_PLACES=499, PETRI_TRANSITIONS=382} [2024-06-14 11:30:37,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-14 11:30:37,382 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 382 transitions, 3962 flow [2024-06-14 11:30:37,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:37,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:37,382 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] [2024-06-14 11:30:37,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-14 11:30:37,382 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:37,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash 182657088, now seen corresponding path program 13 times [2024-06-14 11:30:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609933422] [2024-06-14 11:30:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:37,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:39,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609933422] [2024-06-14 11:30:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609933422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822569934] [2024-06-14 11:30:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:39,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:39,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:39,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 382 transitions, 3962 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:39,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:39,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:40,312 INFO L124 PetriNetUnfolderBase]: 1190/2234 cut-off events. [2024-06-14 11:30:40,312 INFO L125 PetriNetUnfolderBase]: For 309414/309414 co-relation queries the response was YES. [2024-06-14 11:30:40,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13547 conditions, 2234 events. 1190/2234 cut-off events. For 309414/309414 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 14063 event pairs, 257 based on Foata normal form. 10/2244 useless extension candidates. Maximal degree in co-relation 13335. Up to 1771 conditions per place. [2024-06-14 11:30:40,348 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 298 selfloop transitions, 100 changer transitions 9/409 dead transitions. [2024-06-14 11:30:40,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 409 transitions, 4896 flow [2024-06-14 11:30:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:30:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:30:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:30:40,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:30:40,350 INFO L175 Difference]: Start difference. First operand has 499 places, 382 transitions, 3962 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:30:40,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 409 transitions, 4896 flow [2024-06-14 11:30:42,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 409 transitions, 4638 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-14 11:30:42,252 INFO L231 Difference]: Finished difference. Result has 500 places, 379 transitions, 3888 flow [2024-06-14 11:30:42,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3888, PETRI_PLACES=500, PETRI_TRANSITIONS=379} [2024-06-14 11:30:42,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-14 11:30:42,253 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 379 transitions, 3888 flow [2024-06-14 11:30:42,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:42,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:42,253 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] [2024-06-14 11:30:42,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-14 11:30:42,253 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:42,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1055654890, now seen corresponding path program 37 times [2024-06-14 11:30:42,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:42,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669145004] [2024-06-14 11:30:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:42,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669145004] [2024-06-14 11:30:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669145004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:43,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:43,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847553246] [2024-06-14 11:30:43,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:43,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:44,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:44,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 379 transitions, 3888 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:44,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:44,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:44,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:45,147 INFO L124 PetriNetUnfolderBase]: 1168/2194 cut-off events. [2024-06-14 11:30:45,148 INFO L125 PetriNetUnfolderBase]: For 247044/247044 co-relation queries the response was YES. [2024-06-14 11:30:45,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13342 conditions, 2194 events. 1168/2194 cut-off events. For 247044/247044 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13796 event pairs, 284 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 13131. Up to 2011 conditions per place. [2024-06-14 11:30:45,176 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 345 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2024-06-14 11:30:45,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 397 transitions, 4778 flow [2024-06-14 11:30:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:30:45,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 11:30:45,176 INFO L175 Difference]: Start difference. First operand has 500 places, 379 transitions, 3888 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:30:45,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 397 transitions, 4778 flow [2024-06-14 11:30:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 397 transitions, 4570 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:30:46,950 INFO L231 Difference]: Finished difference. Result has 497 places, 380 transitions, 3838 flow [2024-06-14 11:30:46,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3838, PETRI_PLACES=497, PETRI_TRANSITIONS=380} [2024-06-14 11:30:46,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-14 11:30:46,951 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 380 transitions, 3838 flow [2024-06-14 11:30:46,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:46,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:46,951 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] [2024-06-14 11:30:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-14 11:30:46,951 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:46,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1024953692, now seen corresponding path program 38 times [2024-06-14 11:30:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:46,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234468256] [2024-06-14 11:30:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:46,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:48,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234468256] [2024-06-14 11:30:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234468256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:48,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708056999] [2024-06-14 11:30:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:48,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:48,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 380 transitions, 3838 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:48,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:48,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:49,715 INFO L124 PetriNetUnfolderBase]: 1172/2202 cut-off events. [2024-06-14 11:30:49,715 INFO L125 PetriNetUnfolderBase]: For 244392/244392 co-relation queries the response was YES. [2024-06-14 11:30:49,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13316 conditions, 2202 events. 1172/2202 cut-off events. For 244392/244392 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13865 event pairs, 228 based on Foata normal form. 2/2204 useless extension candidates. Maximal degree in co-relation 13106. Up to 1860 conditions per place. [2024-06-14 11:30:49,748 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 309 selfloop transitions, 92 changer transitions 0/403 dead transitions. [2024-06-14 11:30:49,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 403 transitions, 4770 flow [2024-06-14 11:30:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:30:49,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:30:49,749 INFO L175 Difference]: Start difference. First operand has 497 places, 380 transitions, 3838 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:30:49,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 403 transitions, 4770 flow [2024-06-14 11:30:51,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 403 transitions, 4622 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:30:51,483 INFO L231 Difference]: Finished difference. Result has 499 places, 381 transitions, 3934 flow [2024-06-14 11:30:51,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3934, PETRI_PLACES=499, PETRI_TRANSITIONS=381} [2024-06-14 11:30:51,483 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 467 predicate places. [2024-06-14 11:30:51,483 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 381 transitions, 3934 flow [2024-06-14 11:30:51,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:51,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:51,483 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] [2024-06-14 11:30:51,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-14 11:30:51,484 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:51,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash 298309410, now seen corresponding path program 39 times [2024-06-14 11:30:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:51,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289284456] [2024-06-14 11:30:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:51,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289284456] [2024-06-14 11:30:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289284456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:53,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:53,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:30:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361225519] [2024-06-14 11:30:53,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:53,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:30:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:30:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:30:53,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:53,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 381 transitions, 3934 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:53,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:53,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:54,093 INFO L124 PetriNetUnfolderBase]: 1176/2210 cut-off events. [2024-06-14 11:30:54,094 INFO L125 PetriNetUnfolderBase]: For 248627/248627 co-relation queries the response was YES. [2024-06-14 11:30:54,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13503 conditions, 2210 events. 1176/2210 cut-off events. For 248627/248627 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13932 event pairs, 284 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 13292. Up to 2013 conditions per place. [2024-06-14 11:30:54,126 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 346 selfloop transitions, 51 changer transitions 0/399 dead transitions. [2024-06-14 11:30:54,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 399 transitions, 4830 flow [2024-06-14 11:30:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 11:30:54,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278236914600551 [2024-06-14 11:30:54,127 INFO L175 Difference]: Start difference. First operand has 499 places, 381 transitions, 3934 flow. Second operand 11 states and 119 transitions. [2024-06-14 11:30:54,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 399 transitions, 4830 flow [2024-06-14 11:30:55,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 399 transitions, 4596 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:30:55,865 INFO L231 Difference]: Finished difference. Result has 501 places, 382 transitions, 3864 flow [2024-06-14 11:30:55,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3864, PETRI_PLACES=501, PETRI_TRANSITIONS=382} [2024-06-14 11:30:55,865 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-14 11:30:55,865 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 382 transitions, 3864 flow [2024-06-14 11:30:55,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:30:55,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:30:55,865 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] [2024-06-14 11:30:55,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-14 11:30:55,866 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:30:55,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:30:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash 84161728, now seen corresponding path program 40 times [2024-06-14 11:30:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:30:55,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147335144] [2024-06-14 11:30:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:30:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:30:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:30:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:30:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:30:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147335144] [2024-06-14 11:30:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147335144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:30:57,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:30:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:30:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458060356] [2024-06-14 11:30:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:30:57,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:30:57,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:30:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:30:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:30:57,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:30:57,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 382 transitions, 3864 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:30:57,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:30:57,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:30:57,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:30:58,546 INFO L124 PetriNetUnfolderBase]: 1180/2218 cut-off events. [2024-06-14 11:30:58,547 INFO L125 PetriNetUnfolderBase]: For 252708/252708 co-relation queries the response was YES. [2024-06-14 11:30:58,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13450 conditions, 2218 events. 1180/2218 cut-off events. For 252708/252708 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14027 event pairs, 274 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 13238. Up to 1995 conditions per place. [2024-06-14 11:30:58,580 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 341 selfloop transitions, 60 changer transitions 0/403 dead transitions. [2024-06-14 11:30:58,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 403 transitions, 4790 flow [2024-06-14 11:30:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:30:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:30:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:30:58,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:30:58,581 INFO L175 Difference]: Start difference. First operand has 501 places, 382 transitions, 3864 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:30:58,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 403 transitions, 4790 flow [2024-06-14 11:31:00,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 403 transitions, 4636 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:31:00,401 INFO L231 Difference]: Finished difference. Result has 503 places, 383 transitions, 3894 flow [2024-06-14 11:31:00,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=503, PETRI_TRANSITIONS=383} [2024-06-14 11:31:00,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-14 11:31:00,402 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 383 transitions, 3894 flow [2024-06-14 11:31:00,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:31:00,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:00,402 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] [2024-06-14 11:31:00,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-14 11:31:00,402 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:00,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash -934309440, now seen corresponding path program 14 times [2024-06-14 11:31:00,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009480499] [2024-06-14 11:31:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:00,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009480499] [2024-06-14 11:31:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009480499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316941889] [2024-06-14 11:31:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:02,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:02,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:02,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 383 transitions, 3894 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:02,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:02,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:03,439 INFO L124 PetriNetUnfolderBase]: 1221/2305 cut-off events. [2024-06-14 11:31:03,439 INFO L125 PetriNetUnfolderBase]: For 384377/384377 co-relation queries the response was YES. [2024-06-14 11:31:03,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15057 conditions, 2305 events. 1221/2305 cut-off events. For 384377/384377 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 14583 event pairs, 247 based on Foata normal form. 8/2313 useless extension candidates. Maximal degree in co-relation 14844. Up to 1800 conditions per place. [2024-06-14 11:31:03,473 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 309 selfloop transitions, 98 changer transitions 8/417 dead transitions. [2024-06-14 11:31:03,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 417 transitions, 5160 flow [2024-06-14 11:31:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:31:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:31:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:31:03,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-14 11:31:03,474 INFO L175 Difference]: Start difference. First operand has 503 places, 383 transitions, 3894 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:31:03,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 417 transitions, 5160 flow [2024-06-14 11:31:05,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 417 transitions, 4986 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:31:05,762 INFO L231 Difference]: Finished difference. Result has 506 places, 381 transitions, 3904 flow [2024-06-14 11:31:05,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3904, PETRI_PLACES=506, PETRI_TRANSITIONS=381} [2024-06-14 11:31:05,762 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-14 11:31:05,762 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 381 transitions, 3904 flow [2024-06-14 11:31:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:05,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:05,762 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] [2024-06-14 11:31:05,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-14 11:31:05,763 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:05,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -934318740, now seen corresponding path program 15 times [2024-06-14 11:31:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919796111] [2024-06-14 11:31:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919796111] [2024-06-14 11:31:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919796111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:07,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830698640] [2024-06-14 11:31:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:07,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:07,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:07,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 381 transitions, 3904 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:07,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:08,852 INFO L124 PetriNetUnfolderBase]: 1213/2293 cut-off events. [2024-06-14 11:31:08,853 INFO L125 PetriNetUnfolderBase]: For 405646/405646 co-relation queries the response was YES. [2024-06-14 11:31:08,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15058 conditions, 2293 events. 1213/2293 cut-off events. For 405646/405646 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14485 event pairs, 253 based on Foata normal form. 10/2303 useless extension candidates. Maximal degree in co-relation 14844. Up to 1865 conditions per place. [2024-06-14 11:31:08,887 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 92 changer transitions 11/407 dead transitions. [2024-06-14 11:31:08,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 407 transitions, 4838 flow [2024-06-14 11:31:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:31:08,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 11:31:08,888 INFO L175 Difference]: Start difference. First operand has 506 places, 381 transitions, 3904 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:31:08,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 407 transitions, 4838 flow [2024-06-14 11:31:11,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 407 transitions, 4646 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:31:11,028 INFO L231 Difference]: Finished difference. Result has 504 places, 374 transitions, 3847 flow [2024-06-14 11:31:11,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3847, PETRI_PLACES=504, PETRI_TRANSITIONS=374} [2024-06-14 11:31:11,029 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:31:11,029 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 374 transitions, 3847 flow [2024-06-14 11:31:11,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:11,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:11,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:31:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-14 11:31:11,029 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:11,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1483338538, now seen corresponding path program 41 times [2024-06-14 11:31:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822243649] [2024-06-14 11:31:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:12,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:12,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822243649] [2024-06-14 11:31:12,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822243649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:12,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:12,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:12,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795924812] [2024-06-14 11:31:12,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:12,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:12,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:12,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:12,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 374 transitions, 3847 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:12,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:12,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:12,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:13,607 INFO L124 PetriNetUnfolderBase]: 1179/2231 cut-off events. [2024-06-14 11:31:13,607 INFO L125 PetriNetUnfolderBase]: For 336552/336552 co-relation queries the response was YES. [2024-06-14 11:31:13,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 2231 events. 1179/2231 cut-off events. For 336552/336552 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14081 event pairs, 295 based on Foata normal form. 2/2233 useless extension candidates. Maximal degree in co-relation 14638. Up to 2048 conditions per place. [2024-06-14 11:31:13,639 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 342 selfloop transitions, 48 changer transitions 0/392 dead transitions. [2024-06-14 11:31:13,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 392 transitions, 4731 flow [2024-06-14 11:31:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:31:13,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:31:13,640 INFO L175 Difference]: Start difference. First operand has 504 places, 374 transitions, 3847 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:31:13,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 392 transitions, 4731 flow [2024-06-14 11:31:15,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 392 transitions, 4537 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-14 11:31:15,859 INFO L231 Difference]: Finished difference. Result has 498 places, 375 transitions, 3815 flow [2024-06-14 11:31:15,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3815, PETRI_PLACES=498, PETRI_TRANSITIONS=375} [2024-06-14 11:31:15,859 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 466 predicate places. [2024-06-14 11:31:15,859 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 375 transitions, 3815 flow [2024-06-14 11:31:15,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:15,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:15,859 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] [2024-06-14 11:31:15,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-14 11:31:15,859 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:15,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1608017554, now seen corresponding path program 42 times [2024-06-14 11:31:15,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:15,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481492450] [2024-06-14 11:31:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:15,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:17,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481492450] [2024-06-14 11:31:17,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481492450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:17,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:17,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:17,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020793055] [2024-06-14 11:31:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:17,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:17,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:17,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:17,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 375 transitions, 3815 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:17,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:17,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:17,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:18,976 INFO L124 PetriNetUnfolderBase]: 1183/2239 cut-off events. [2024-06-14 11:31:18,977 INFO L125 PetriNetUnfolderBase]: For 323046/323046 co-relation queries the response was YES. [2024-06-14 11:31:19,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14754 conditions, 2239 events. 1183/2239 cut-off events. For 323046/323046 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14156 event pairs, 273 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 14544. Up to 1935 conditions per place. [2024-06-14 11:31:19,010 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 313 selfloop transitions, 82 changer transitions 0/397 dead transitions. [2024-06-14 11:31:19,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 397 transitions, 4737 flow [2024-06-14 11:31:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:31:19,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:31:19,011 INFO L175 Difference]: Start difference. First operand has 498 places, 375 transitions, 3815 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:31:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 397 transitions, 4737 flow [2024-06-14 11:31:21,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 397 transitions, 4585 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 11:31:21,045 INFO L231 Difference]: Finished difference. Result has 500 places, 376 transitions, 3897 flow [2024-06-14 11:31:21,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3897, PETRI_PLACES=500, PETRI_TRANSITIONS=376} [2024-06-14 11:31:21,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-14 11:31:21,045 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 376 transitions, 3897 flow [2024-06-14 11:31:21,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:21,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:21,046 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] [2024-06-14 11:31:21,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-14 11:31:21,046 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:21,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 294590340, now seen corresponding path program 43 times [2024-06-14 11:31:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:21,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300621435] [2024-06-14 11:31:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300621435] [2024-06-14 11:31:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300621435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:23,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:23,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912083187] [2024-06-14 11:31:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:23,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:23,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 376 transitions, 3897 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:23,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:23,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:23,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:24,153 INFO L124 PetriNetUnfolderBase]: 1187/2247 cut-off events. [2024-06-14 11:31:24,153 INFO L125 PetriNetUnfolderBase]: For 328682/328682 co-relation queries the response was YES. [2024-06-14 11:31:24,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14935 conditions, 2247 events. 1187/2247 cut-off events. For 328682/328682 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14200 event pairs, 297 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 14724. Up to 2064 conditions per place. [2024-06-14 11:31:24,186 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 345 selfloop transitions, 47 changer transitions 0/394 dead transitions. [2024-06-14 11:31:24,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 394 transitions, 4787 flow [2024-06-14 11:31:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:31:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3168044077134986 [2024-06-14 11:31:24,187 INFO L175 Difference]: Start difference. First operand has 500 places, 376 transitions, 3897 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:31:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 394 transitions, 4787 flow [2024-06-14 11:31:26,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 394 transitions, 4563 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 11:31:26,475 INFO L231 Difference]: Finished difference. Result has 502 places, 377 transitions, 3837 flow [2024-06-14 11:31:26,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3837, PETRI_PLACES=502, PETRI_TRANSITIONS=377} [2024-06-14 11:31:26,475 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 470 predicate places. [2024-06-14 11:31:26,475 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 377 transitions, 3837 flow [2024-06-14 11:31:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:26,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:26,475 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] [2024-06-14 11:31:26,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-14 11:31:26,476 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:26,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1295123024, now seen corresponding path program 44 times [2024-06-14 11:31:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:26,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465993941] [2024-06-14 11:31:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:28,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:28,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465993941] [2024-06-14 11:31:28,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465993941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:28,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:28,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205353868] [2024-06-14 11:31:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:28,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:28,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 377 transitions, 3837 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:28,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:28,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:28,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:29,402 INFO L124 PetriNetUnfolderBase]: 1191/2255 cut-off events. [2024-06-14 11:31:29,402 INFO L125 PetriNetUnfolderBase]: For 328470/328470 co-relation queries the response was YES. [2024-06-14 11:31:29,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14862 conditions, 2255 events. 1191/2255 cut-off events. For 328470/328470 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14259 event pairs, 291 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 14650. Up to 2033 conditions per place. [2024-06-14 11:31:29,437 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 334 selfloop transitions, 61 changer transitions 0/397 dead transitions. [2024-06-14 11:31:29,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 397 transitions, 4749 flow [2024-06-14 11:31:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:31:29,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:31:29,438 INFO L175 Difference]: Start difference. First operand has 502 places, 377 transitions, 3837 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:31:29,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 397 transitions, 4749 flow [2024-06-14 11:31:31,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 397 transitions, 4597 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 11:31:31,623 INFO L231 Difference]: Finished difference. Result has 504 places, 378 transitions, 3878 flow [2024-06-14 11:31:31,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3878, PETRI_PLACES=504, PETRI_TRANSITIONS=378} [2024-06-14 11:31:31,623 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 472 predicate places. [2024-06-14 11:31:31,623 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 378 transitions, 3878 flow [2024-06-14 11:31:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:31,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:31,624 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] [2024-06-14 11:31:31,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-14 11:31:31,624 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:31,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1295117444, now seen corresponding path program 45 times [2024-06-14 11:31:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266613741] [2024-06-14 11:31:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266613741] [2024-06-14 11:31:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266613741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:33,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:33,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:33,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875385650] [2024-06-14 11:31:33,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:33,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:33,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:33,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 378 transitions, 3878 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:33,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:33,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:33,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:34,784 INFO L124 PetriNetUnfolderBase]: 1195/2263 cut-off events. [2024-06-14 11:31:34,785 INFO L125 PetriNetUnfolderBase]: For 334096/334096 co-relation queries the response was YES. [2024-06-14 11:31:34,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14977 conditions, 2263 events. 1195/2263 cut-off events. For 334096/334096 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14346 event pairs, 291 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 14764. Up to 2049 conditions per place. [2024-06-14 11:31:34,821 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 338 selfloop transitions, 58 changer transitions 0/398 dead transitions. [2024-06-14 11:31:34,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 398 transitions, 4792 flow [2024-06-14 11:31:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:31:34,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:31:34,822 INFO L175 Difference]: Start difference. First operand has 504 places, 378 transitions, 3878 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:31:34,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 398 transitions, 4792 flow [2024-06-14 11:31:37,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 398 transitions, 4611 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-14 11:31:37,105 INFO L231 Difference]: Finished difference. Result has 506 places, 379 transitions, 3885 flow [2024-06-14 11:31:37,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3885, PETRI_PLACES=506, PETRI_TRANSITIONS=379} [2024-06-14 11:31:37,106 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-14 11:31:37,106 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 379 transitions, 3885 flow [2024-06-14 11:31:37,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:37,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:31:37,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:31:37,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-14 11:31:37,106 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:31:37,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:31:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash -941937796, now seen corresponding path program 46 times [2024-06-14 11:31:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:31:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451331157] [2024-06-14 11:31:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:31:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:31:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:31:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:31:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:31:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451331157] [2024-06-14 11:31:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451331157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:31:39,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:31:39,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:31:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973593589] [2024-06-14 11:31:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:31:39,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:31:39,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:31:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:31:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:31:39,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-06-14 11:31:39,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 379 transitions, 3885 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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) [2024-06-14 11:31:39,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:31:39,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-06-14 11:31:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:31:40,591 INFO L124 PetriNetUnfolderBase]: 1199/2271 cut-off events. [2024-06-14 11:31:40,591 INFO L125 PetriNetUnfolderBase]: For 339615/339615 co-relation queries the response was YES. [2024-06-14 11:31:40,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15046 conditions, 2271 events. 1199/2271 cut-off events. For 339615/339615 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14430 event pairs, 259 based on Foata normal form. 2/2273 useless extension candidates. Maximal degree in co-relation 14832. Up to 1951 conditions per place. [2024-06-14 11:31:40,631 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 312 selfloop transitions, 87 changer transitions 0/401 dead transitions. [2024-06-14 11:31:40,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 401 transitions, 4821 flow [2024-06-14 11:31:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:31:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:31:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:31:40,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 11:31:40,632 INFO L175 Difference]: Start difference. First operand has 506 places, 379 transitions, 3885 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:31:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 401 transitions, 4821 flow Killed by 15