./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:43:43,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:43:43,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:43:43,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:43:43,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:43:43,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:43:43,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:43:43,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:43:43,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:43:43,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:43:43,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:43:43,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:43:43,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:43:43,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:43:43,683 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:43:43,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:43:43,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:43:43,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:43:43,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:43:43,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:43:43,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:43:43,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:43:43,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:43:43,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:43:43,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:43:43,686 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:43:43,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:43:43,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:43:43,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:43:43,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:43:43,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:43:43,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:43:43,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:43:43,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:43:43,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:43:43,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:43:43,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:43:43,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:43:43,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:43:43,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:43:43,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:43:43,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:43:43,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:43:43,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:43:43,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:43:43,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:43:43,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:43:43,940 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:43:43,941 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:43:43,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-04 14:43:44,069 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:43:44,070 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:43:44,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-04 14:43:45,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:43:45,524 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:43:45,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-04 14:43:45,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101b853ff/8fc1442eb1344e4abd183b6718f5c27a/FLAG71b5fa4c6 [2024-06-04 14:43:45,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101b853ff/8fc1442eb1344e4abd183b6718f5c27a [2024-06-04 14:43:45,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:43:45,559 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:43:45,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:43:45,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:43:45,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:43:45,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:43:44" (1/2) ... [2024-06-04 14:43:45,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4897f424 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:43:45, skipping insertion in model container [2024-06-04 14:43:45,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:43:44" (1/2) ... [2024-06-04 14:43:45,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d5493a7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:43:45, skipping insertion in model container [2024-06-04 14:43:45,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:43:45" (2/2) ... [2024-06-04 14:43:45,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4897f424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:45, skipping insertion in model container [2024-06-04 14:43:45,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:43:45" (2/2) ... [2024-06-04 14:43:45,571 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:43:45,640 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:43:45,642 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-04 14:43:45,642 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! 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 || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-04 14:43:45,642 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:43:45,642 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-04 14:43:45,687 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:43:46,104 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:43:46,115 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:43:46,235 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:43:46,269 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:43:46,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46 WrapperNode [2024-06-04 14:43:46,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:43:46,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:43:46,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:43:46,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:43:46,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,336 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-04 14:43:46,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:43:46,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:43:46,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:43:46,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:43:46,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,372 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]. [2024-06-04 14:43:46,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:43:46,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:43:46,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:43:46,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:43:46,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (1/1) ... [2024-06-04 14:43:46,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:43:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:43:46,435 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) [2024-06-04 14:43:46,444 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 [2024-06-04 14:43:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:43:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:43:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:43:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:43:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:43:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:43:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:43:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:43:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:43:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:43:46,467 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:43:46,576 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:43:46,579 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:43:46,849 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:43:46,850 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:43:47,015 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:43:47,015 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:43:47,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:43:47 BoogieIcfgContainer [2024-06-04 14:43:47,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:43:47,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:43:47,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:43:47,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:43:47,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:43:44" (1/4) ... [2024-06-04 14:43:47,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5130d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:43:47, skipping insertion in model container [2024-06-04 14:43:47,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:43:45" (2/4) ... [2024-06-04 14:43:47,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5130d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:43:47, skipping insertion in model container [2024-06-04 14:43:47,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:43:46" (3/4) ... [2024-06-04 14:43:47,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5130d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:43:47, skipping insertion in model container [2024-06-04 14:43:47,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:43:47" (4/4) ... [2024-06-04 14:43:47,033 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-04 14:43:47,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:43:47,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:43:47,050 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:43:47,098 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:43:47,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-04 14:43:47,166 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-04 14:43:47,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:43:47,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:43:47,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-04 14:43:47,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-04 14:43:47,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:43:47,193 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;@2fc688a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:43:47,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:43:47,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:43:47,199 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:43:47,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:43:47,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:47,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:43:47,201 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)] === [2024-06-04 14:43:47,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1657040526, now seen corresponding path program 1 times [2024-06-04 14:43:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:47,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576211935] [2024-06-04 14:43:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:47,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:48,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:48,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576211935] [2024-06-04 14:43:48,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576211935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:48,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:48,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:43:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629002389] [2024-06-04 14:43:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:43:48,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:43:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:43:48,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-04 14:43:48,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:48,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:48,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-04 14:43:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:48,448 INFO L124 PetriNetUnfolderBase]: 131/257 cut-off events. [2024-06-04 14:43:48,448 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 14:43:48,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 257 events. 131/257 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 940 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 501. Up to 235 conditions per place. [2024-06-04 14:43:48,454 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-04 14:43:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-04 14:43:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:43:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:43:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-04 14:43:48,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-04 14:43:48,468 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-04 14:43:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-04 14:43:48,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:43:48,473 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-04 14:43:48,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-04 14:43:48,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-04 14:43:48,478 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-04 14:43:48,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:48,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:48,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:48,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:43:48,479 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)] === [2024-06-04 14:43:48,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1016656483, now seen corresponding path program 1 times [2024-06-04 14:43:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:48,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938447550] [2024-06-04 14:43:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:48,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:49,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938447550] [2024-06-04 14:43:49,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938447550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:49,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:49,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:43:49,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552116068] [2024-06-04 14:43:49,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:43:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:43:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:43:49,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-04 14:43:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-04 14:43:49,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:49,381 INFO L124 PetriNetUnfolderBase]: 128/257 cut-off events. [2024-06-04 14:43:49,382 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-06-04 14:43:49,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 257 events. 128/257 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 927 event pairs, 57 based on Foata normal form. 2/257 useless extension candidates. Maximal degree in co-relation 567. Up to 221 conditions per place. [2024-06-04 14:43:49,388 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-04 14:43:49,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-04 14:43:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:43:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:43:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-04 14:43:49,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-04 14:43:49,392 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-04 14:43:49,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-04 14:43:49,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:43:49,396 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-04 14:43:49,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-04 14:43:49,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-04 14:43:49,398 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-04 14:43:49,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:49,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:49,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:49,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:43:49,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:43:49,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2024054476, now seen corresponding path program 1 times [2024-06-04 14:43:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:49,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765992218] [2024-06-04 14:43:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:49,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765992218] [2024-06-04 14:43:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765992218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:50,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:43:50,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308407436] [2024-06-04 14:43:50,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:50,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:43:50,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:43:50,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:43:50,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-04 14:43:50,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:50,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:50,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-04 14:43:50,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:50,727 INFO L124 PetriNetUnfolderBase]: 153/296 cut-off events. [2024-06-04 14:43:50,728 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-06-04 14:43:50,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 296 events. 153/296 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1050 event pairs, 43 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 730. Up to 246 conditions per place. [2024-06-04 14:43:50,730 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-06-04 14:43:50,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 240 flow [2024-06-04 14:43:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:43:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:43:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-04 14:43:50,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2024-06-04 14:43:50,733 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 6 states and 94 transitions. [2024-06-04 14:43:50,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 240 flow [2024-06-04 14:43:50,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 228 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:43:50,735 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 134 flow [2024-06-04 14:43:50,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 14:43:50,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-04 14:43:50,736 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 134 flow [2024-06-04 14:43:50,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:50,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:50,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:50,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:43:50,737 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)] === [2024-06-04 14:43:50,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:50,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1678819492, now seen corresponding path program 1 times [2024-06-04 14:43:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:50,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274745811] [2024-06-04 14:43:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:50,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274745811] [2024-06-04 14:43:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274745811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:51,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:43:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529841519] [2024-06-04 14:43:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:51,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:43:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:43:51,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:43:51,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-04 14:43:51,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:51,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:51,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-04 14:43:51,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:52,044 INFO L124 PetriNetUnfolderBase]: 149/286 cut-off events. [2024-06-04 14:43:52,044 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-06-04 14:43:52,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 286 events. 149/286 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1000 event pairs, 24 based on Foata normal form. 4/288 useless extension candidates. Maximal degree in co-relation 791. Up to 220 conditions per place. [2024-06-04 14:43:52,047 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-04 14:43:52,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 260 flow [2024-06-04 14:43:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-04 14:43:52,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47465437788018433 [2024-06-04 14:43:52,053 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 134 flow. Second operand 7 states and 103 transitions. [2024-06-04 14:43:52,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 260 flow [2024-06-04 14:43:52,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 243 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:43:52,057 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 133 flow [2024-06-04 14:43:52,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-06-04 14:43:52,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-04 14:43:52,059 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 133 flow [2024-06-04 14:43:52,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:52,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:52,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:52,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:43:52,060 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)] === [2024-06-04 14:43:52,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1940312150, now seen corresponding path program 1 times [2024-06-04 14:43:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:52,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325506074] [2024-06-04 14:43:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:52,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:52,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325506074] [2024-06-04 14:43:52,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325506074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:52,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:52,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:43:52,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955287677] [2024-06-04 14:43:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:52,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:43:52,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:43:52,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:43:52,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:52,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2024-06-04 14:43:52,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:52,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:52,825 INFO L124 PetriNetUnfolderBase]: 174/316 cut-off events. [2024-06-04 14:43:52,825 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-04 14:43:52,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 316 events. 174/316 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1055 event pairs, 47 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 938. Up to 304 conditions per place. [2024-06-04 14:43:52,827 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-04 14:43:52,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 221 flow [2024-06-04 14:43:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:43:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:43:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-04 14:43:52,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 14:43:52,829 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 133 flow. Second operand 5 states and 60 transitions. [2024-06-04 14:43:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 221 flow [2024-06-04 14:43:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 197 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:52,832 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 136 flow [2024-06-04 14:43:52,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-04 14:43:52,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-04 14:43:52,833 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 136 flow [2024-06-04 14:43:52,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2024-06-04 14:43:52,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:52,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:52,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:43:52,834 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)] === [2024-06-04 14:43:52,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 46054112, now seen corresponding path program 1 times [2024-06-04 14:43:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556101198] [2024-06-04 14:43:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:52,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556101198] [2024-06-04 14:43:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556101198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:43:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518999237] [2024-06-04 14:43:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:53,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:43:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:43:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:43:53,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:53,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:53,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:53,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:53,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:53,812 INFO L124 PetriNetUnfolderBase]: 168/307 cut-off events. [2024-06-04 14:43:53,812 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-06-04 14:43:53,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 307 events. 168/307 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1000 event pairs, 44 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 940. Up to 286 conditions per place. [2024-06-04 14:43:53,816 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-04 14:43:53,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 242 flow [2024-06-04 14:43:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:43:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:43:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-04 14:43:53,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-04 14:43:53,818 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 136 flow. Second operand 6 states and 71 transitions. [2024-06-04 14:43:53,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 242 flow [2024-06-04 14:43:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 231 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:43:53,821 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 158 flow [2024-06-04 14:43:53,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-04 14:43:53,824 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-04 14:43:53,824 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 158 flow [2024-06-04 14:43:53,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:53,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:53,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:53,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:43:53,826 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)] === [2024-06-04 14:43:53,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1427463613, now seen corresponding path program 1 times [2024-06-04 14:43:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105267013] [2024-06-04 14:43:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:54,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105267013] [2024-06-04 14:43:54,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105267013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:43:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84488734] [2024-06-04 14:43:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:54,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:43:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:54,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:43:54,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:43:54,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:54,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:54,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:54,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:54,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:54,696 INFO L124 PetriNetUnfolderBase]: 171/312 cut-off events. [2024-06-04 14:43:54,696 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2024-06-04 14:43:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 312 events. 171/312 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1023 event pairs, 44 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 1023. Up to 284 conditions per place. [2024-06-04 14:43:54,699 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 35 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-04 14:43:54,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 302 flow [2024-06-04 14:43:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:43:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:43:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-04 14:43:54,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-04 14:43:54,701 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 158 flow. Second operand 6 states and 75 transitions. [2024-06-04 14:43:54,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 302 flow [2024-06-04 14:43:54,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 285 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:54,704 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 188 flow [2024-06-04 14:43:54,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-04 14:43:54,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-04 14:43:54,705 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 188 flow [2024-06-04 14:43:54,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:54,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:54,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:54,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:43:54,706 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)] === [2024-06-04 14:43:54,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1454482903, now seen corresponding path program 2 times [2024-06-04 14:43:54,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048596014] [2024-06-04 14:43:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048596014] [2024-06-04 14:43:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048596014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:55,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:43:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777350953] [2024-06-04 14:43:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:43:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:43:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:43:55,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:55,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:55,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:55,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:55,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:55,596 INFO L124 PetriNetUnfolderBase]: 169/309 cut-off events. [2024-06-04 14:43:55,597 INFO L125 PetriNetUnfolderBase]: For 947/947 co-relation queries the response was YES. [2024-06-04 14:43:55,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 309 events. 169/309 cut-off events. For 947/947 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1027 event pairs, 43 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 1066. Up to 294 conditions per place. [2024-06-04 14:43:55,599 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-04 14:43:55,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 286 flow [2024-06-04 14:43:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:43:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:43:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-04 14:43:55,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-04 14:43:55,601 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 188 flow. Second operand 6 states and 69 transitions. [2024-06-04 14:43:55,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 286 flow [2024-06-04 14:43:55,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 272 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:43:55,603 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 195 flow [2024-06-04 14:43:55,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-06-04 14:43:55,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-04 14:43:55,604 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 195 flow [2024-06-04 14:43:55,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:55,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:55,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:55,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:43:55,605 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)] === [2024-06-04 14:43:55,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2130829247, now seen corresponding path program 1 times [2024-06-04 14:43:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:55,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721929225] [2024-06-04 14:43:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:55,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:56,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:56,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721929225] [2024-06-04 14:43:56,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721929225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:56,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:56,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:56,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103254738] [2024-06-04 14:43:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:56,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:56,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:56,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:56,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 195 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:56,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:56,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:56,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:56,603 INFO L124 PetriNetUnfolderBase]: 172/314 cut-off events. [2024-06-04 14:43:56,604 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-06-04 14:43:56,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 314 events. 172/314 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1034 event pairs, 42 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1111. Up to 284 conditions per place. [2024-06-04 14:43:56,606 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-04 14:43:56,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 339 flow [2024-06-04 14:43:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 14:43:56,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 14:43:56,608 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 195 flow. Second operand 7 states and 84 transitions. [2024-06-04 14:43:56,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 339 flow [2024-06-04 14:43:56,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 315 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:56,611 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 210 flow [2024-06-04 14:43:56,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=45, 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=210, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-04 14:43:56,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-04 14:43:56,612 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 210 flow [2024-06-04 14:43:56,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:56,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:56,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:56,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:43:56,612 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)] === [2024-06-04 14:43:56,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1993440455, now seen corresponding path program 1 times [2024-06-04 14:43:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188319793] [2024-06-04 14:43:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188319793] [2024-06-04 14:43:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188319793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:57,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602242113] [2024-06-04 14:43:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:57,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:57,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:57,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:57,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:57,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:57,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:57,552 INFO L124 PetriNetUnfolderBase]: 191/345 cut-off events. [2024-06-04 14:43:57,553 INFO L125 PetriNetUnfolderBase]: For 1615/1615 co-relation queries the response was YES. [2024-06-04 14:43:57,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 345 events. 191/345 cut-off events. For 1615/1615 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1185 event pairs, 46 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 1269. Up to 290 conditions per place. [2024-06-04 14:43:57,555 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2024-06-04 14:43:57,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 402 flow [2024-06-04 14:43:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-04 14:43:57,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-04 14:43:57,557 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 210 flow. Second operand 7 states and 90 transitions. [2024-06-04 14:43:57,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 402 flow [2024-06-04 14:43:57,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 379 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:57,560 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 257 flow [2024-06-04 14:43:57,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-06-04 14:43:57,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-04 14:43:57,561 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 257 flow [2024-06-04 14:43:57,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:57,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:57,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:43:57,562 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)] === [2024-06-04 14:43:57,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:57,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1993440269, now seen corresponding path program 2 times [2024-06-04 14:43:57,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:57,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101315880] [2024-06-04 14:43:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:58,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:58,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101315880] [2024-06-04 14:43:58,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101315880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:58,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:58,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853574974] [2024-06-04 14:43:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:58,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:58,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:58,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:58,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:58,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:58,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:58,503 INFO L124 PetriNetUnfolderBase]: 194/350 cut-off events. [2024-06-04 14:43:58,504 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2024-06-04 14:43:58,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 350 events. 194/350 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1200 event pairs, 45 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1404. Up to 304 conditions per place. [2024-06-04 14:43:58,507 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-04 14:43:58,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 449 flow [2024-06-04 14:43:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 14:43:58,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-04 14:43:58,508 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 257 flow. Second operand 7 states and 86 transitions. [2024-06-04 14:43:58,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 449 flow [2024-06-04 14:43:58,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 440 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:43:58,513 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 319 flow [2024-06-04 14:43:58,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-04 14:43:58,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-04 14:43:58,514 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 319 flow [2024-06-04 14:43:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:58,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:58,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:43:58,515 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)] === [2024-06-04 14:43:58,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2139298283, now seen corresponding path program 3 times [2024-06-04 14:43:58,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:58,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397151500] [2024-06-04 14:43:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:59,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:59,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397151500] [2024-06-04 14:43:59,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397151500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:59,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:59,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224454435] [2024-06-04 14:43:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:59,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:59,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:59,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:43:59,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:59,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:59,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:43:59,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:59,435 INFO L124 PetriNetUnfolderBase]: 192/347 cut-off events. [2024-06-04 14:43:59,436 INFO L125 PetriNetUnfolderBase]: For 2302/2302 co-relation queries the response was YES. [2024-06-04 14:43:59,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 347 events. 192/347 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1179 event pairs, 44 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 1469. Up to 329 conditions per place. [2024-06-04 14:43:59,439 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-04 14:43:59,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 445 flow [2024-06-04 14:43:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-04 14:43:59,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-04 14:43:59,440 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 319 flow. Second operand 7 states and 78 transitions. [2024-06-04 14:43:59,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 445 flow [2024-06-04 14:43:59,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 417 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 14:43:59,445 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 316 flow [2024-06-04 14:43:59,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2024-06-04 14:43:59,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-04 14:43:59,446 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 316 flow [2024-06-04 14:43:59,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:59,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:59,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:59,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:43:59,447 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)] === [2024-06-04 14:43:59,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1883591581, now seen corresponding path program 2 times [2024-06-04 14:43:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747065848] [2024-06-04 14:43:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:00,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747065848] [2024-06-04 14:44:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747065848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:00,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:00,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:44:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204277001] [2024-06-04 14:44:00,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:00,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:44:00,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:44:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:44:00,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:00,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:00,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:00,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:00,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:00,368 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2024-06-04 14:44:00,368 INFO L125 PetriNetUnfolderBase]: For 2826/2826 co-relation queries the response was YES. [2024-06-04 14:44:00,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 362 events. 201/362 cut-off events. For 2826/2826 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1248 event pairs, 44 based on Foata normal form. 3/363 useless extension candidates. Maximal degree in co-relation 1552. Up to 338 conditions per place. [2024-06-04 14:44:00,371 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2024-06-04 14:44:00,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 61 transitions, 468 flow [2024-06-04 14:44:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:44:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:44:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-04 14:44:00,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-04 14:44:00,373 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 316 flow. Second operand 7 states and 80 transitions. [2024-06-04 14:44:00,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 61 transitions, 468 flow [2024-06-04 14:44:00,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 439 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:00,378 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 328 flow [2024-06-04 14:44:00,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-04 14:44:00,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-04 14:44:00,380 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 328 flow [2024-06-04 14:44:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:00,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:00,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:00,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:44:00,381 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)] === [2024-06-04 14:44:00,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:00,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1883585071, now seen corresponding path program 3 times [2024-06-04 14:44:00,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:00,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203154563] [2024-06-04 14:44:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:00,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:01,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:01,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203154563] [2024-06-04 14:44:01,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203154563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:01,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:01,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:44:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007907061] [2024-06-04 14:44:01,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:01,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:44:01,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:44:01,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:44:01,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:01,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 328 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:01,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:01,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:01,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:01,378 INFO L124 PetriNetUnfolderBase]: 195/353 cut-off events. [2024-06-04 14:44:01,378 INFO L125 PetriNetUnfolderBase]: For 3011/3011 co-relation queries the response was YES. [2024-06-04 14:44:01,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 353 events. 195/353 cut-off events. For 3011/3011 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 event pairs, 42 based on Foata normal form. 3/354 useless extension candidates. Maximal degree in co-relation 1529. Up to 317 conditions per place. [2024-06-04 14:44:01,381 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-04 14:44:01,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 478 flow [2024-06-04 14:44:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:44:01,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:44:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 14:44:01,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 14:44:01,382 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 328 flow. Second operand 7 states and 84 transitions. [2024-06-04 14:44:01,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 478 flow [2024-06-04 14:44:01,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 453 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:44:01,387 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 334 flow [2024-06-04 14:44:01,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-04 14:44:01,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-04 14:44:01,389 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 334 flow [2024-06-04 14:44:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:01,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:01,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:44:01,390 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)] === [2024-06-04 14:44:01,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:01,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1886109238, now seen corresponding path program 1 times [2024-06-04 14:44:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:01,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3282201] [2024-06-04 14:44:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:02,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3282201] [2024-06-04 14:44:02,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3282201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:02,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:02,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:02,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954691298] [2024-06-04 14:44:02,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:02,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:02,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:02,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:02,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:02,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:02,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 334 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:02,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:02,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:02,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:02,996 INFO L124 PetriNetUnfolderBase]: 198/358 cut-off events. [2024-06-04 14:44:02,997 INFO L125 PetriNetUnfolderBase]: For 3236/3236 co-relation queries the response was YES. [2024-06-04 14:44:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 358 events. 198/358 cut-off events. For 3236/3236 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1244 event pairs, 41 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1590. Up to 314 conditions per place. [2024-06-04 14:44:03,000 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-04 14:44:03,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 532 flow [2024-06-04 14:44:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:44:03,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-04 14:44:03,001 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 334 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:44:03,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 532 flow [2024-06-04 14:44:03,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 493 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:03,008 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 347 flow [2024-06-04 14:44:03,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=347, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2024-06-04 14:44:03,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-04 14:44:03,008 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 347 flow [2024-06-04 14:44:03,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:03,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:03,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:03,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:44:03,009 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)] === [2024-06-04 14:44:03,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1886018873, now seen corresponding path program 1 times [2024-06-04 14:44:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:03,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985789543] [2024-06-04 14:44:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:03,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:03,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985789543] [2024-06-04 14:44:03,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985789543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:03,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:03,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169531150] [2024-06-04 14:44:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:03,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:03,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 347 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:03,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:03,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:03,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:04,077 INFO L124 PetriNetUnfolderBase]: 207/373 cut-off events. [2024-06-04 14:44:04,077 INFO L125 PetriNetUnfolderBase]: For 3862/3862 co-relation queries the response was YES. [2024-06-04 14:44:04,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 373 events. 207/373 cut-off events. For 3862/3862 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1310 event pairs, 40 based on Foata normal form. 3/374 useless extension candidates. Maximal degree in co-relation 1686. Up to 334 conditions per place. [2024-06-04 14:44:04,081 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 58 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-04 14:44:04,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 541 flow [2024-06-04 14:44:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:44:04,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-04 14:44:04,082 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 347 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:44:04,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 541 flow [2024-06-04 14:44:04,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 507 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:04,088 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 360 flow [2024-06-04 14:44:04,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=360, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-04 14:44:04,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-04 14:44:04,089 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 360 flow [2024-06-04 14:44:04,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:04,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:04,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:04,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:44:04,090 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)] === [2024-06-04 14:44:04,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1882299958, now seen corresponding path program 2 times [2024-06-04 14:44:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:04,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064429487] [2024-06-04 14:44:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:04,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064429487] [2024-06-04 14:44:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064429487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:04,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:04,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555084425] [2024-06-04 14:44:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:04,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:05,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:05,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 360 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:05,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:05,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:05,205 INFO L124 PetriNetUnfolderBase]: 210/378 cut-off events. [2024-06-04 14:44:05,205 INFO L125 PetriNetUnfolderBase]: For 4134/4134 co-relation queries the response was YES. [2024-06-04 14:44:05,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 378 events. 210/378 cut-off events. For 4134/4134 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1329 event pairs, 41 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1768. Up to 330 conditions per place. [2024-06-04 14:44:05,208 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2024-06-04 14:44:05,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 538 flow [2024-06-04 14:44:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 14:44:05,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-04 14:44:05,210 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 360 flow. Second operand 8 states and 94 transitions. [2024-06-04 14:44:05,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 538 flow [2024-06-04 14:44:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 507 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:05,216 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 394 flow [2024-06-04 14:44:05,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=394, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-06-04 14:44:05,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-04 14:44:05,216 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 394 flow [2024-06-04 14:44:05,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:05,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:05,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:05,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:44:05,217 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)] === [2024-06-04 14:44:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1667107631, now seen corresponding path program 2 times [2024-06-04 14:44:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776287426] [2024-06-04 14:44:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:05,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776287426] [2024-06-04 14:44:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776287426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:05,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592252559] [2024-06-04 14:44:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:05,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:05,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:05,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 394 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:05,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:05,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:05,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:06,209 INFO L124 PetriNetUnfolderBase]: 244/433 cut-off events. [2024-06-04 14:44:06,209 INFO L125 PetriNetUnfolderBase]: For 5808/5808 co-relation queries the response was YES. [2024-06-04 14:44:06,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 433 events. 244/433 cut-off events. For 5808/5808 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1598 event pairs, 51 based on Foata normal form. 3/434 useless extension candidates. Maximal degree in co-relation 2123. Up to 296 conditions per place. [2024-06-04 14:44:06,213 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 26 changer transitions 0/85 dead transitions. [2024-06-04 14:44:06,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 736 flow [2024-06-04 14:44:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 14:44:06,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-04 14:44:06,215 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 394 flow. Second operand 8 states and 108 transitions. [2024-06-04 14:44:06,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 736 flow [2024-06-04 14:44:06,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 687 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:06,222 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 460 flow [2024-06-04 14:44:06,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=460, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-04 14:44:06,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-04 14:44:06,223 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 460 flow [2024-06-04 14:44:06,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:06,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:06,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:06,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:44:06,224 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)] === [2024-06-04 14:44:06,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:06,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1667113211, now seen corresponding path program 3 times [2024-06-04 14:44:06,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653233523] [2024-06-04 14:44:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:06,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:06,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653233523] [2024-06-04 14:44:06,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653233523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:06,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479601700] [2024-06-04 14:44:06,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:06,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:06,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:07,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 460 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:07,265 INFO L124 PetriNetUnfolderBase]: 238/424 cut-off events. [2024-06-04 14:44:07,265 INFO L125 PetriNetUnfolderBase]: For 6094/6094 co-relation queries the response was YES. [2024-06-04 14:44:07,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 424 events. 238/424 cut-off events. For 6094/6094 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1554 event pairs, 51 based on Foata normal form. 3/425 useless extension candidates. Maximal degree in co-relation 2130. Up to 292 conditions per place. [2024-06-04 14:44:07,270 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 27 changer transitions 0/82 dead transitions. [2024-06-04 14:44:07,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 702 flow [2024-06-04 14:44:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 14:44:07,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 14:44:07,271 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 460 flow. Second operand 8 states and 104 transitions. [2024-06-04 14:44:07,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 702 flow [2024-06-04 14:44:07,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 661 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-04 14:44:07,280 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 478 flow [2024-06-04 14:44:07,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-06-04 14:44:07,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-04 14:44:07,281 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 478 flow [2024-06-04 14:44:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:07,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:07,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:07,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:44:07,282 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)] === [2024-06-04 14:44:07,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1893744349, now seen corresponding path program 4 times [2024-06-04 14:44:07,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:07,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733294712] [2024-06-04 14:44:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:07,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:07,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:07,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733294712] [2024-06-04 14:44:07,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733294712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594461709] [2024-06-04 14:44:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:07,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:08,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:08,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:08,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:08,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:08,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:08,302 INFO L124 PetriNetUnfolderBase]: 262/463 cut-off events. [2024-06-04 14:44:08,303 INFO L125 PetriNetUnfolderBase]: For 7508/7508 co-relation queries the response was YES. [2024-06-04 14:44:08,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 463 events. 262/463 cut-off events. For 7508/7508 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1749 event pairs, 55 based on Foata normal form. 3/464 useless extension candidates. Maximal degree in co-relation 2446. Up to 379 conditions per place. [2024-06-04 14:44:08,307 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-04 14:44:08,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 810 flow [2024-06-04 14:44:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 14:44:08,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-04 14:44:08,309 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 478 flow. Second operand 8 states and 99 transitions. [2024-06-04 14:44:08,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 810 flow [2024-06-04 14:44:08,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 743 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:08,319 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 506 flow [2024-06-04 14:44:08,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-04 14:44:08,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-04 14:44:08,319 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 506 flow [2024-06-04 14:44:08,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:08,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:08,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:08,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:44:08,320 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)] === [2024-06-04 14:44:08,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1431749996, now seen corresponding path program 3 times [2024-06-04 14:44:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931551510] [2024-06-04 14:44:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:09,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931551510] [2024-06-04 14:44:09,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931551510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:09,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:09,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561558910] [2024-06-04 14:44:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:09,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:09,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:09,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:09,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 506 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:09,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:09,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:09,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:09,491 INFO L124 PetriNetUnfolderBase]: 260/460 cut-off events. [2024-06-04 14:44:09,492 INFO L125 PetriNetUnfolderBase]: For 7510/7510 co-relation queries the response was YES. [2024-06-04 14:44:09,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 460 events. 260/460 cut-off events. For 7510/7510 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1718 event pairs, 59 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2406. Up to 439 conditions per place. [2024-06-04 14:44:09,497 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-04 14:44:09,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 698 flow [2024-06-04 14:44:09,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 14:44:09,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-04 14:44:09,498 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 506 flow. Second operand 8 states and 87 transitions. [2024-06-04 14:44:09,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 698 flow [2024-06-04 14:44:09,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 646 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:44:09,514 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 509 flow [2024-06-04 14:44:09,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-06-04 14:44:09,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-04 14:44:09,514 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 509 flow [2024-06-04 14:44:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:09,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:09,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:09,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:44:09,515 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)] === [2024-06-04 14:44:09,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1431749841, now seen corresponding path program 5 times [2024-06-04 14:44:09,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:09,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212643145] [2024-06-04 14:44:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212643145] [2024-06-04 14:44:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212643145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662274651] [2024-06-04 14:44:10,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:10,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:10,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:10,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:10,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:10,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 509 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:10,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:10,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:10,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:10,512 INFO L124 PetriNetUnfolderBase]: 254/451 cut-off events. [2024-06-04 14:44:10,512 INFO L125 PetriNetUnfolderBase]: For 7795/7795 co-relation queries the response was YES. [2024-06-04 14:44:10,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 451 events. 254/451 cut-off events. For 7795/7795 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1687 event pairs, 47 based on Foata normal form. 3/452 useless extension candidates. Maximal degree in co-relation 2294. Up to 372 conditions per place. [2024-06-04 14:44:10,516 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-04 14:44:10,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 755 flow [2024-06-04 14:44:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 14:44:10,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-04 14:44:10,518 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 509 flow. Second operand 8 states and 97 transitions. [2024-06-04 14:44:10,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 755 flow [2024-06-04 14:44:10,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 706 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:10,527 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 505 flow [2024-06-04 14:44:10,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-06-04 14:44:10,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-04 14:44:10,528 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 505 flow [2024-06-04 14:44:10,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:10,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:10,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:10,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:44:10,528 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)] === [2024-06-04 14:44:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1424392611, now seen corresponding path program 6 times [2024-06-04 14:44:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424489606] [2024-06-04 14:44:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:11,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424489606] [2024-06-04 14:44:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424489606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587922855] [2024-06-04 14:44:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:11,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:11,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:11,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 505 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:11,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:11,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:11,562 INFO L124 PetriNetUnfolderBase]: 248/442 cut-off events. [2024-06-04 14:44:11,562 INFO L125 PetriNetUnfolderBase]: For 7705/7705 co-relation queries the response was YES. [2024-06-04 14:44:11,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 442 events. 248/442 cut-off events. For 7705/7705 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1654 event pairs, 51 based on Foata normal form. 3/443 useless extension candidates. Maximal degree in co-relation 2226. Up to 405 conditions per place. [2024-06-04 14:44:11,565 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2024-06-04 14:44:11,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 82 transitions, 695 flow [2024-06-04 14:44:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-04 14:44:11,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-04 14:44:11,567 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 505 flow. Second operand 8 states and 91 transitions. [2024-06-04 14:44:11,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 82 transitions, 695 flow [2024-06-04 14:44:11,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 82 transitions, 647 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:11,578 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 486 flow [2024-06-04 14:44:11,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2024-06-04 14:44:11,578 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-04 14:44:11,579 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 486 flow [2024-06-04 14:44:11,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:11,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:11,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:11,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:44:11,579 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)] === [2024-06-04 14:44:11,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1424125484, now seen corresponding path program 1 times [2024-06-04 14:44:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655715302] [2024-06-04 14:44:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:12,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655715302] [2024-06-04 14:44:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655715302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:12,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198634871] [2024-06-04 14:44:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:12,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:12,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:12,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:12,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:12,831 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2024-06-04 14:44:12,831 INFO L125 PetriNetUnfolderBase]: For 7524/7524 co-relation queries the response was YES. [2024-06-04 14:44:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 436 events. 244/436 cut-off events. For 7524/7524 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1612 event pairs, 47 based on Foata normal form. 2/436 useless extension candidates. Maximal degree in co-relation 2153. Up to 407 conditions per place. [2024-06-04 14:44:12,835 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2024-06-04 14:44:12,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 684 flow [2024-06-04 14:44:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:44:12,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-04 14:44:12,837 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 486 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:44:12,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 684 flow [2024-06-04 14:44:12,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 82 transitions, 644 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:12,849 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 495 flow [2024-06-04 14:44:12,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=495, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-04 14:44:12,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-04 14:44:12,850 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 495 flow [2024-06-04 14:44:12,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:12,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:12,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:12,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:44:12,850 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)] === [2024-06-04 14:44:12,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1424115564, now seen corresponding path program 1 times [2024-06-04 14:44:12,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:12,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743900176] [2024-06-04 14:44:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:14,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743900176] [2024-06-04 14:44:14,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743900176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:14,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:14,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558316249] [2024-06-04 14:44:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:14,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:14,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:14,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 495 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:14,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:14,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:14,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:14,410 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-04 14:44:14,410 INFO L125 PetriNetUnfolderBase]: For 7493/7493 co-relation queries the response was YES. [2024-06-04 14:44:14,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2161 conditions, 431 events. 241/431 cut-off events. For 7493/7493 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1590 event pairs, 46 based on Foata normal form. 2/431 useless extension candidates. Maximal degree in co-relation 2116. Up to 404 conditions per place. [2024-06-04 14:44:14,413 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 69 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-06-04 14:44:14,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 677 flow [2024-06-04 14:44:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:14,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 14:44:14,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-04 14:44:14,416 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 495 flow. Second operand 8 states and 87 transitions. [2024-06-04 14:44:14,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 677 flow [2024-06-04 14:44:14,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 641 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:14,424 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 485 flow [2024-06-04 14:44:14,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2024-06-04 14:44:14,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-04 14:44:14,425 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 485 flow [2024-06-04 14:44:14,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:14,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:14,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:14,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:44:14,425 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)] === [2024-06-04 14:44:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 22577386, now seen corresponding path program 1 times [2024-06-04 14:44:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199876008] [2024-06-04 14:44:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199876008] [2024-06-04 14:44:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199876008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841544844] [2024-06-04 14:44:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:15,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:15,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:15,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 485 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:15,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:15,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:15,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:15,790 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-06-04 14:44:15,791 INFO L125 PetriNetUnfolderBase]: For 8889/8889 co-relation queries the response was YES. [2024-06-04 14:44:15,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 452 events. 252/452 cut-off events. For 8889/8889 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1712 event pairs, 33 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 2287. Up to 373 conditions per place. [2024-06-04 14:44:15,794 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 78 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-04 14:44:15,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 807 flow [2024-06-04 14:44:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:44:15,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-04 14:44:15,795 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 485 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:44:15,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 807 flow [2024-06-04 14:44:15,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 781 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:15,805 INFO L231 Difference]: Finished difference. Result has 94 places, 74 transitions, 529 flow [2024-06-04 14:44:15,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=529, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2024-06-04 14:44:15,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-04 14:44:15,806 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 529 flow [2024-06-04 14:44:15,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:15,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:15,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:44:15,807 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)] === [2024-06-04 14:44:15,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1660157202, now seen corresponding path program 1 times [2024-06-04 14:44:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:15,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456805446] [2024-06-04 14:44:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:16,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:16,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456805446] [2024-06-04 14:44:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456805446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:16,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:16,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722399063] [2024-06-04 14:44:16,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:16,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:16,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:16,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:16,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 529 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:16,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:16,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:16,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:17,227 INFO L124 PetriNetUnfolderBase]: 261/467 cut-off events. [2024-06-04 14:44:17,228 INFO L125 PetriNetUnfolderBase]: For 9936/9936 co-relation queries the response was YES. [2024-06-04 14:44:17,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 467 events. 261/467 cut-off events. For 9936/9936 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1800 event pairs, 49 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2401. Up to 401 conditions per place. [2024-06-04 14:44:17,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 19 changer transitions 0/100 dead transitions. [2024-06-04 14:44:17,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 807 flow [2024-06-04 14:44:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:44:17,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 14:44:17,237 INFO L175 Difference]: Start difference. First operand has 94 places, 74 transitions, 529 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:44:17,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 807 flow [2024-06-04 14:44:17,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 770 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:17,249 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 569 flow [2024-06-04 14:44:17,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=569, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-06-04 14:44:17,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-04 14:44:17,250 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 569 flow [2024-06-04 14:44:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:17,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:17,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:17,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:44:17,251 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)] === [2024-06-04 14:44:17,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 22637836, now seen corresponding path program 2 times [2024-06-04 14:44:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:17,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968228126] [2024-06-04 14:44:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:17,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:18,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:18,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968228126] [2024-06-04 14:44:18,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968228126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:18,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:18,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960046411] [2024-06-04 14:44:18,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:18,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:18,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:18,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 569 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:18,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:18,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:18,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:18,618 INFO L124 PetriNetUnfolderBase]: 258/462 cut-off events. [2024-06-04 14:44:18,619 INFO L125 PetriNetUnfolderBase]: For 9668/9668 co-relation queries the response was YES. [2024-06-04 14:44:18,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 462 events. 258/462 cut-off events. For 9668/9668 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1766 event pairs, 50 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2409. Up to 412 conditions per place. [2024-06-04 14:44:18,622 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-04 14:44:18,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 807 flow [2024-06-04 14:44:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:44:18,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-04 14:44:18,624 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 569 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:44:18,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 807 flow [2024-06-04 14:44:18,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 744 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:18,640 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 540 flow [2024-06-04 14:44:18,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2024-06-04 14:44:18,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-04 14:44:18,641 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 540 flow [2024-06-04 14:44:18,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:18,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:18,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:18,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:44:18,642 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)] === [2024-06-04 14:44:18,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 140730290, now seen corresponding path program 2 times [2024-06-04 14:44:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:18,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139954297] [2024-06-04 14:44:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:19,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139954297] [2024-06-04 14:44:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139954297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:19,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478069329] [2024-06-04 14:44:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:19,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:19,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:19,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 540 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:19,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:19,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:19,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:19,669 INFO L124 PetriNetUnfolderBase]: 261/467 cut-off events. [2024-06-04 14:44:19,670 INFO L125 PetriNetUnfolderBase]: For 9859/9859 co-relation queries the response was YES. [2024-06-04 14:44:19,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 467 events. 261/467 cut-off events. For 9859/9859 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1803 event pairs, 42 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 2398. Up to 389 conditions per place. [2024-06-04 14:44:19,673 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-04 14:44:19,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 104 transitions, 867 flow [2024-06-04 14:44:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:44:19,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-04 14:44:19,676 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 540 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:44:19,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 104 transitions, 867 flow [2024-06-04 14:44:19,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 835 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:19,691 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 693 flow [2024-06-04 14:44:19,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=693, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2024-06-04 14:44:19,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-04 14:44:19,692 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 693 flow [2024-06-04 14:44:19,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:19,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:19,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:19,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:44:19,693 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)] === [2024-06-04 14:44:19,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash 140725516, now seen corresponding path program 3 times [2024-06-04 14:44:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:19,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111844647] [2024-06-04 14:44:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111844647] [2024-06-04 14:44:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111844647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:20,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:20,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963761673] [2024-06-04 14:44:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:20,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:20,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 693 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:20,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:20,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:20,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:20,923 INFO L124 PetriNetUnfolderBase]: 265/475 cut-off events. [2024-06-04 14:44:20,923 INFO L125 PetriNetUnfolderBase]: For 11298/11298 co-relation queries the response was YES. [2024-06-04 14:44:20,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 475 events. 265/475 cut-off events. For 11298/11298 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1855 event pairs, 47 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 2597. Up to 421 conditions per place. [2024-06-04 14:44:20,927 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 20 changer transitions 0/104 dead transitions. [2024-06-04 14:44:20,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 945 flow [2024-06-04 14:44:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:44:20,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-04 14:44:20,933 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 693 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:44:20,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 945 flow [2024-06-04 14:44:20,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 104 transitions, 901 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-04 14:44:20,953 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 713 flow [2024-06-04 14:44:20,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-06-04 14:44:20,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-04 14:44:20,954 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 713 flow [2024-06-04 14:44:20,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:20,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:20,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:20,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:44:20,954 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)] === [2024-06-04 14:44:20,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 140725640, now seen corresponding path program 3 times [2024-06-04 14:44:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831731265] [2024-06-04 14:44:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:21,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831731265] [2024-06-04 14:44:21,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831731265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:21,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:21,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389446186] [2024-06-04 14:44:21,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:21,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:21,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:21,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:21,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:21,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 713 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:21,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:21,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:21,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:22,258 INFO L124 PetriNetUnfolderBase]: 289/514 cut-off events. [2024-06-04 14:44:22,258 INFO L125 PetriNetUnfolderBase]: For 13970/13970 co-relation queries the response was YES. [2024-06-04 14:44:22,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 514 events. 289/514 cut-off events. For 13970/13970 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2055 event pairs, 46 based on Foata normal form. 3/515 useless extension candidates. Maximal degree in co-relation 2902. Up to 341 conditions per place. [2024-06-04 14:44:22,262 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 47 changer transitions 0/117 dead transitions. [2024-06-04 14:44:22,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 117 transitions, 1115 flow [2024-06-04 14:44:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 14:44:22,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-04 14:44:22,264 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 713 flow. Second operand 10 states and 130 transitions. [2024-06-04 14:44:22,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 117 transitions, 1115 flow [2024-06-04 14:44:22,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 117 transitions, 1061 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:22,287 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 837 flow [2024-06-04 14:44:22,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=837, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-06-04 14:44:22,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-04 14:44:22,288 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 837 flow [2024-06-04 14:44:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:22,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:22,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:22,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:44:22,289 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)] === [2024-06-04 14:44:22,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash 140903270, now seen corresponding path program 4 times [2024-06-04 14:44:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935345142] [2024-06-04 14:44:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:22,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935345142] [2024-06-04 14:44:23,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935345142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:23,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:23,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401667223] [2024-06-04 14:44:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:23,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:23,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:23,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:23,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:23,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:23,414 INFO L124 PetriNetUnfolderBase]: 287/511 cut-off events. [2024-06-04 14:44:23,415 INFO L125 PetriNetUnfolderBase]: For 13555/13555 co-relation queries the response was YES. [2024-06-04 14:44:23,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 511 events. 287/511 cut-off events. For 13555/13555 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2047 event pairs, 47 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 2980. Up to 433 conditions per place. [2024-06-04 14:44:23,418 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 28 changer transitions 0/112 dead transitions. [2024-06-04 14:44:23,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 112 transitions, 1115 flow [2024-06-04 14:44:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 14:44:23,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-04 14:44:23,421 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 837 flow. Second operand 9 states and 106 transitions. [2024-06-04 14:44:23,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 112 transitions, 1115 flow [2024-06-04 14:44:23,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 112 transitions, 1036 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:23,447 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 837 flow [2024-06-04 14:44:23,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-04 14:44:23,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-04 14:44:23,449 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 837 flow [2024-06-04 14:44:23,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:23,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:23,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:23,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:44:23,450 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)] === [2024-06-04 14:44:23,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:23,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1423466044, now seen corresponding path program 5 times [2024-06-04 14:44:23,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:23,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297399669] [2024-06-04 14:44:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:24,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297399669] [2024-06-04 14:44:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297399669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999270628] [2024-06-04 14:44:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:24,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:24,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:24,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:24,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:24,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:24,472 INFO L124 PetriNetUnfolderBase]: 290/516 cut-off events. [2024-06-04 14:44:24,472 INFO L125 PetriNetUnfolderBase]: For 14171/14171 co-relation queries the response was YES. [2024-06-04 14:44:24,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 516 events. 290/516 cut-off events. For 14171/14171 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2071 event pairs, 47 based on Foata normal form. 1/515 useless extension candidates. Maximal degree in co-relation 3027. Up to 477 conditions per place. [2024-06-04 14:44:24,477 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-04 14:44:24,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 1129 flow [2024-06-04 14:44:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:44:24,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-04 14:44:24,478 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 837 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:44:24,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 1129 flow [2024-06-04 14:44:24,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 1063 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:24,504 INFO L231 Difference]: Finished difference. Result has 120 places, 103 transitions, 868 flow [2024-06-04 14:44:24,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=868, PETRI_PLACES=120, PETRI_TRANSITIONS=103} [2024-06-04 14:44:24,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-04 14:44:24,505 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 103 transitions, 868 flow [2024-06-04 14:44:24,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:24,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:24,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:24,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:44:24,506 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)] === [2024-06-04 14:44:24,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1434570830, now seen corresponding path program 6 times [2024-06-04 14:44:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:24,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764548456] [2024-06-04 14:44:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:24,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:25,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:25,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764548456] [2024-06-04 14:44:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764548456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:25,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:25,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020090225] [2024-06-04 14:44:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:25,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:25,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:25,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:25,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 103 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:25,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:25,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:25,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:25,519 INFO L124 PetriNetUnfolderBase]: 293/521 cut-off events. [2024-06-04 14:44:25,519 INFO L125 PetriNetUnfolderBase]: For 15047/15047 co-relation queries the response was YES. [2024-06-04 14:44:25,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 521 events. 293/521 cut-off events. For 15047/15047 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2089 event pairs, 47 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3089. Up to 482 conditions per place. [2024-06-04 14:44:25,524 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 93 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2024-06-04 14:44:25,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 117 transitions, 1166 flow [2024-06-04 14:44:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:44:25,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 14:44:25,525 INFO L175 Difference]: Start difference. First operand has 120 places, 103 transitions, 868 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:44:25,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 117 transitions, 1166 flow [2024-06-04 14:44:25,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 117 transitions, 1111 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 14:44:25,555 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 923 flow [2024-06-04 14:44:25,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=923, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-06-04 14:44:25,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-04 14:44:25,555 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 923 flow [2024-06-04 14:44:25,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:25,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:25,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:25,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:44:25,556 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)] === [2024-06-04 14:44:25,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:25,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1434575604, now seen corresponding path program 4 times [2024-06-04 14:44:25,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:25,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884096064] [2024-06-04 14:44:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:25,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:26,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884096064] [2024-06-04 14:44:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884096064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:26,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53633336] [2024-06-04 14:44:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:26,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:26,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:26,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 923 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:26,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:26,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:26,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:26,588 INFO L124 PetriNetUnfolderBase]: 290/516 cut-off events. [2024-06-04 14:44:26,588 INFO L125 PetriNetUnfolderBase]: For 15349/15349 co-relation queries the response was YES. [2024-06-04 14:44:26,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 516 events. 290/516 cut-off events. For 15349/15349 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2066 event pairs, 46 based on Foata normal form. 2/516 useless extension candidates. Maximal degree in co-relation 3047. Up to 489 conditions per place. [2024-06-04 14:44:26,591 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2024-06-04 14:44:26,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 1177 flow [2024-06-04 14:44:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:44:26,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-04 14:44:26,592 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 923 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:44:26,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 1177 flow [2024-06-04 14:44:26,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 118 transitions, 1133 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 14:44:26,612 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 909 flow [2024-06-04 14:44:26,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=909, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-06-04 14:44:26,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-04 14:44:26,613 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 909 flow [2024-06-04 14:44:26,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:26,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:26,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:26,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:44:26,614 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)] === [2024-06-04 14:44:26,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1943884016, now seen corresponding path program 7 times [2024-06-04 14:44:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793329067] [2024-06-04 14:44:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793329067] [2024-06-04 14:44:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793329067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:27,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:27,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243600832] [2024-06-04 14:44:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:27,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:27,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:27,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:27,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:27,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:27,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:27,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:27,848 INFO L124 PetriNetUnfolderBase]: 309/547 cut-off events. [2024-06-04 14:44:27,848 INFO L125 PetriNetUnfolderBase]: For 18269/18269 co-relation queries the response was YES. [2024-06-04 14:44:27,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 547 events. 309/547 cut-off events. For 18269/18269 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2234 event pairs, 44 based on Foata normal form. 3/548 useless extension candidates. Maximal degree in co-relation 3333. Up to 434 conditions per place. [2024-06-04 14:44:27,851 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 37 changer transitions 0/130 dead transitions. [2024-06-04 14:44:27,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1361 flow [2024-06-04 14:44:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:44:27,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 14:44:27,860 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 909 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:44:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1361 flow [2024-06-04 14:44:27,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 130 transitions, 1294 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:27,898 INFO L231 Difference]: Finished difference. Result has 131 places, 114 transitions, 1024 flow [2024-06-04 14:44:27,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1024, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2024-06-04 14:44:27,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-04 14:44:27,899 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 1024 flow [2024-06-04 14:44:27,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:27,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:27,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:27,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:44:27,900 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)] === [2024-06-04 14:44:27,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1206496700, now seen corresponding path program 8 times [2024-06-04 14:44:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:27,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775423841] [2024-06-04 14:44:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:27,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:28,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775423841] [2024-06-04 14:44:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775423841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:28,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:28,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512848439] [2024-06-04 14:44:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:28,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:28,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:28,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 1024 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:28,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:28,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:28,907 INFO L124 PetriNetUnfolderBase]: 307/544 cut-off events. [2024-06-04 14:44:28,907 INFO L125 PetriNetUnfolderBase]: For 17410/17410 co-relation queries the response was YES. [2024-06-04 14:44:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3416 conditions, 544 events. 307/544 cut-off events. For 17410/17410 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2206 event pairs, 51 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3352. Up to 520 conditions per place. [2024-06-04 14:44:28,910 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 108 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-04 14:44:28,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 1310 flow [2024-06-04 14:44:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:44:28,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-04 14:44:28,911 INFO L175 Difference]: Start difference. First operand has 131 places, 114 transitions, 1024 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:44:28,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 1310 flow [2024-06-04 14:44:28,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 124 transitions, 1205 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:28,938 INFO L231 Difference]: Finished difference. Result has 132 places, 115 transitions, 976 flow [2024-06-04 14:44:28,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=976, PETRI_PLACES=132, PETRI_TRANSITIONS=115} [2024-06-04 14:44:28,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-04 14:44:28,938 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 115 transitions, 976 flow [2024-06-04 14:44:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:28,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:28,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:44:28,939 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)] === [2024-06-04 14:44:28,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1198215794, now seen corresponding path program 1 times [2024-06-04 14:44:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770305712] [2024-06-04 14:44:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:28,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770305712] [2024-06-04 14:44:29,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770305712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:29,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:29,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:29,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327370248] [2024-06-04 14:44:29,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:29,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:29,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:29,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:29,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:29,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 976 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:29,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:29,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:29,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:30,050 INFO L124 PetriNetUnfolderBase]: 303/538 cut-off events. [2024-06-04 14:44:30,051 INFO L125 PetriNetUnfolderBase]: For 17292/17292 co-relation queries the response was YES. [2024-06-04 14:44:30,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 538 events. 303/538 cut-off events. For 17292/17292 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2173 event pairs, 44 based on Foata normal form. 2/538 useless extension candidates. Maximal degree in co-relation 3146. Up to 501 conditions per place. [2024-06-04 14:44:30,054 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2024-06-04 14:44:30,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 1296 flow [2024-06-04 14:44:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:44:30,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-04 14:44:30,055 INFO L175 Difference]: Start difference. First operand has 132 places, 115 transitions, 976 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:44:30,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 1296 flow [2024-06-04 14:44:30,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1236 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:30,076 INFO L231 Difference]: Finished difference. Result has 136 places, 119 transitions, 1002 flow [2024-06-04 14:44:30,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1002, PETRI_PLACES=136, PETRI_TRANSITIONS=119} [2024-06-04 14:44:30,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-04 14:44:30,077 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 119 transitions, 1002 flow [2024-06-04 14:44:30,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:30,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:30,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:44:30,077 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)] === [2024-06-04 14:44:30,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:30,077 INFO L85 PathProgramCache]: Analyzing trace with hash -76610648, now seen corresponding path program 1 times [2024-06-04 14:44:30,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:30,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476535691] [2024-06-04 14:44:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:30,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:31,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476535691] [2024-06-04 14:44:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476535691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:31,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:31,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:31,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213739212] [2024-06-04 14:44:31,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:31,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:31,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 119 transitions, 1002 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:31,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:31,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:31,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:31,477 INFO L124 PetriNetUnfolderBase]: 343/618 cut-off events. [2024-06-04 14:44:31,477 INFO L125 PetriNetUnfolderBase]: For 26943/26943 co-relation queries the response was YES. [2024-06-04 14:44:31,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4024 conditions, 618 events. 343/618 cut-off events. For 26943/26943 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2637 event pairs, 48 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3958. Up to 434 conditions per place. [2024-06-04 14:44:31,480 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 127 selfloop transitions, 22 changer transitions 0/151 dead transitions. [2024-06-04 14:44:31,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 151 transitions, 1516 flow [2024-06-04 14:44:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:44:31,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-04 14:44:31,481 INFO L175 Difference]: Start difference. First operand has 136 places, 119 transitions, 1002 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:44:31,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 151 transitions, 1516 flow [2024-06-04 14:44:31,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 151 transitions, 1465 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:31,511 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1025 flow [2024-06-04 14:44:31,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1025, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2024-06-04 14:44:31,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-04 14:44:31,511 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1025 flow [2024-06-04 14:44:31,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:31,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:31,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:44:31,512 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)] === [2024-06-04 14:44:31,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -74736698, now seen corresponding path program 2 times [2024-06-04 14:44:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570585752] [2024-06-04 14:44:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570585752] [2024-06-04 14:44:32,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570585752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:32,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:32,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944424218] [2024-06-04 14:44:32,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:32,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:32,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:32,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:32,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1025 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:32,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:32,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:32,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:32,855 INFO L124 PetriNetUnfolderBase]: 364/657 cut-off events. [2024-06-04 14:44:32,856 INFO L125 PetriNetUnfolderBase]: For 29881/29881 co-relation queries the response was YES. [2024-06-04 14:44:32,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4312 conditions, 657 events. 364/657 cut-off events. For 29881/29881 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2890 event pairs, 67 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4245. Up to 564 conditions per place. [2024-06-04 14:44:32,860 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2024-06-04 14:44:32,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 153 transitions, 1529 flow [2024-06-04 14:44:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:44:32,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-04 14:44:32,861 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1025 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:44:32,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 153 transitions, 1529 flow [2024-06-04 14:44:32,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 153 transitions, 1487 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:32,920 INFO L231 Difference]: Finished difference. Result has 145 places, 127 transitions, 1096 flow [2024-06-04 14:44:32,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1096, PETRI_PLACES=145, PETRI_TRANSITIONS=127} [2024-06-04 14:44:32,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-04 14:44:32,921 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 127 transitions, 1096 flow [2024-06-04 14:44:32,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:32,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:32,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:44:32,922 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)] === [2024-06-04 14:44:32,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash -74732823, now seen corresponding path program 1 times [2024-06-04 14:44:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101489171] [2024-06-04 14:44:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:33,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101489171] [2024-06-04 14:44:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101489171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146505489] [2024-06-04 14:44:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:33,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:34,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:34,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 127 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:34,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:34,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:34,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:34,463 INFO L124 PetriNetUnfolderBase]: 380/683 cut-off events. [2024-06-04 14:44:34,463 INFO L125 PetriNetUnfolderBase]: For 33720/33720 co-relation queries the response was YES. [2024-06-04 14:44:34,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 683 events. 380/683 cut-off events. For 33720/33720 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3030 event pairs, 69 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4603. Up to 598 conditions per place. [2024-06-04 14:44:34,468 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 26 changer transitions 0/156 dead transitions. [2024-06-04 14:44:34,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 1639 flow [2024-06-04 14:44:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:44:34,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 14:44:34,473 INFO L175 Difference]: Start difference. First operand has 145 places, 127 transitions, 1096 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:44:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 156 transitions, 1639 flow [2024-06-04 14:44:34,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 156 transitions, 1607 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 14:44:34,552 INFO L231 Difference]: Finished difference. Result has 152 places, 132 transitions, 1219 flow [2024-06-04 14:44:34,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1219, PETRI_PLACES=152, PETRI_TRANSITIONS=132} [2024-06-04 14:44:34,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-04 14:44:34,553 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 132 transitions, 1219 flow [2024-06-04 14:44:34,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:34,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:34,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:34,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:44:34,554 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)] === [2024-06-04 14:44:34,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -74732978, now seen corresponding path program 3 times [2024-06-04 14:44:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746673876] [2024-06-04 14:44:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:34,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:35,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746673876] [2024-06-04 14:44:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746673876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:35,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001547974] [2024-06-04 14:44:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:35,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:35,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:35,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 132 transitions, 1219 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:35,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:35,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:35,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:36,121 INFO L124 PetriNetUnfolderBase]: 380/691 cut-off events. [2024-06-04 14:44:36,122 INFO L125 PetriNetUnfolderBase]: For 41663/41663 co-relation queries the response was YES. [2024-06-04 14:44:36,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4348 conditions, 691 events. 380/691 cut-off events. For 41663/41663 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3124 event pairs, 63 based on Foata normal form. 22/711 useless extension candidates. Maximal degree in co-relation 4275. Up to 537 conditions per place. [2024-06-04 14:44:36,128 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 24 changer transitions 11/162 dead transitions. [2024-06-04 14:44:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 162 transitions, 1683 flow [2024-06-04 14:44:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:44:36,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-04 14:44:36,130 INFO L175 Difference]: Start difference. First operand has 152 places, 132 transitions, 1219 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:44:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 162 transitions, 1683 flow [2024-06-04 14:44:36,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 162 transitions, 1605 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:36,205 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 1183 flow [2024-06-04 14:44:36,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1183, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2024-06-04 14:44:36,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-04 14:44:36,206 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 1183 flow [2024-06-04 14:44:36,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:36,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:36,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:44:36,207 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)] === [2024-06-04 14:44:36,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash 12103137, now seen corresponding path program 2 times [2024-06-04 14:44:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:36,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769387010] [2024-06-04 14:44:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769387010] [2024-06-04 14:44:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769387010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524114242] [2024-06-04 14:44:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:37,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:37,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:37,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:37,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:37,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:37,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:37,610 INFO L124 PetriNetUnfolderBase]: 349/626 cut-off events. [2024-06-04 14:44:37,610 INFO L125 PetriNetUnfolderBase]: For 26390/26390 co-relation queries the response was YES. [2024-06-04 14:44:37,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4064 conditions, 626 events. 349/626 cut-off events. For 26390/26390 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2740 event pairs, 53 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 3989. Up to 578 conditions per place. [2024-06-04 14:44:37,615 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 16 changer transitions 2/152 dead transitions. [2024-06-04 14:44:37,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 152 transitions, 1588 flow [2024-06-04 14:44:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:44:37,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-04 14:44:37,621 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 1183 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:44:37,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 152 transitions, 1588 flow [2024-06-04 14:44:37,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1527 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 14:44:37,688 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 1225 flow [2024-06-04 14:44:37,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1225, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-06-04 14:44:37,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-04 14:44:37,689 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 1225 flow [2024-06-04 14:44:37,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:37,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:44:37,690 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)] === [2024-06-04 14:44:37,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -443541822, now seen corresponding path program 4 times [2024-06-04 14:44:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954129171] [2024-06-04 14:44:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:37,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954129171] [2024-06-04 14:44:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954129171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:38,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869397052] [2024-06-04 14:44:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:38,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:38,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:38,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:38,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:39,086 INFO L124 PetriNetUnfolderBase]: 346/621 cut-off events. [2024-06-04 14:44:39,086 INFO L125 PetriNetUnfolderBase]: For 25667/25667 co-relation queries the response was YES. [2024-06-04 14:44:39,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 621 events. 346/621 cut-off events. For 25667/25667 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2719 event pairs, 50 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 3879. Up to 551 conditions per place. [2024-06-04 14:44:39,090 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 130 selfloop transitions, 19 changer transitions 2/153 dead transitions. [2024-06-04 14:44:39,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 153 transitions, 1579 flow [2024-06-04 14:44:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:44:39,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-04 14:44:39,091 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 1225 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:44:39,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 153 transitions, 1579 flow [2024-06-04 14:44:39,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 1521 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:39,147 INFO L231 Difference]: Finished difference. Result has 162 places, 134 transitions, 1209 flow [2024-06-04 14:44:39,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1209, PETRI_PLACES=162, PETRI_TRANSITIONS=134} [2024-06-04 14:44:39,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-04 14:44:39,148 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 134 transitions, 1209 flow [2024-06-04 14:44:39,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:39,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:39,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:39,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:44:39,148 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)] === [2024-06-04 14:44:39,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:39,149 INFO L85 PathProgramCache]: Analyzing trace with hash 83814527, now seen corresponding path program 3 times [2024-06-04 14:44:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:39,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132190969] [2024-06-04 14:44:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:39,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132190969] [2024-06-04 14:44:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132190969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376057645] [2024-06-04 14:44:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:40,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:40,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:40,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 134 transitions, 1209 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:40,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:40,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:40,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:40,418 INFO L124 PetriNetUnfolderBase]: 342/615 cut-off events. [2024-06-04 14:44:40,418 INFO L125 PetriNetUnfolderBase]: For 24671/24671 co-relation queries the response was YES. [2024-06-04 14:44:40,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 615 events. 342/615 cut-off events. For 24671/24671 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2679 event pairs, 51 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3740. Up to 555 conditions per place. [2024-06-04 14:44:40,421 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 20 changer transitions 2/153 dead transitions. [2024-06-04 14:44:40,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 153 transitions, 1563 flow [2024-06-04 14:44:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:44:40,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-04 14:44:40,423 INFO L175 Difference]: Start difference. First operand has 162 places, 134 transitions, 1209 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:44:40,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 153 transitions, 1563 flow [2024-06-04 14:44:40,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 1476 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 14:44:40,470 INFO L231 Difference]: Finished difference. Result has 162 places, 134 transitions, 1167 flow [2024-06-04 14:44:40,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1167, PETRI_PLACES=162, PETRI_TRANSITIONS=134} [2024-06-04 14:44:40,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-04 14:44:40,470 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 134 transitions, 1167 flow [2024-06-04 14:44:40,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:40,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:40,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:40,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:44:40,471 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)] === [2024-06-04 14:44:40,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -356725402, now seen corresponding path program 5 times [2024-06-04 14:44:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907564392] [2024-06-04 14:44:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:41,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907564392] [2024-06-04 14:44:41,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907564392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:41,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:41,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418474575] [2024-06-04 14:44:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:41,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:41,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:41,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 134 transitions, 1167 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:41,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:41,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:41,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:41,869 INFO L124 PetriNetUnfolderBase]: 389/708 cut-off events. [2024-06-04 14:44:41,869 INFO L125 PetriNetUnfolderBase]: For 40018/40018 co-relation queries the response was YES. [2024-06-04 14:44:41,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 708 events. 389/708 cut-off events. For 40018/40018 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3225 event pairs, 59 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 4709. Up to 418 conditions per place. [2024-06-04 14:44:41,873 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 48 changer transitions 0/161 dead transitions. [2024-06-04 14:44:41,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 161 transitions, 1801 flow [2024-06-04 14:44:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 14:44:41,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-04 14:44:41,874 INFO L175 Difference]: Start difference. First operand has 162 places, 134 transitions, 1167 flow. Second operand 10 states and 133 transitions. [2024-06-04 14:44:41,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 161 transitions, 1801 flow [2024-06-04 14:44:41,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 161 transitions, 1729 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:44:41,925 INFO L231 Difference]: Finished difference. Result has 162 places, 136 transitions, 1225 flow [2024-06-04 14:44:41,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1225, PETRI_PLACES=162, PETRI_TRANSITIONS=136} [2024-06-04 14:44:41,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-04 14:44:41,926 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 136 transitions, 1225 flow [2024-06-04 14:44:41,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:41,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:41,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:44:41,926 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)] === [2024-06-04 14:44:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash -305009797, now seen corresponding path program 4 times [2024-06-04 14:44:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928157646] [2024-06-04 14:44:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928157646] [2024-06-04 14:44:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928157646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:42,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:42,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:42,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461702137] [2024-06-04 14:44:42,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:42,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:42,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:42,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 136 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:42,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:42,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:42,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:43,165 INFO L124 PetriNetUnfolderBase]: 405/734 cut-off events. [2024-06-04 14:44:43,165 INFO L125 PetriNetUnfolderBase]: For 43995/43995 co-relation queries the response was YES. [2024-06-04 14:44:43,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 734 events. 405/734 cut-off events. For 43995/43995 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3368 event pairs, 52 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 5096. Up to 523 conditions per place. [2024-06-04 14:44:43,169 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 53 changer transitions 0/160 dead transitions. [2024-06-04 14:44:43,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 1778 flow [2024-06-04 14:44:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:44:43,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-04 14:44:43,175 INFO L175 Difference]: Start difference. First operand has 162 places, 136 transitions, 1225 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:44:43,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 1778 flow [2024-06-04 14:44:43,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 1703 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:43,237 INFO L231 Difference]: Finished difference. Result has 166 places, 141 transitions, 1366 flow [2024-06-04 14:44:43,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1366, PETRI_PLACES=166, PETRI_TRANSITIONS=141} [2024-06-04 14:44:43,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-04 14:44:43,237 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 141 transitions, 1366 flow [2024-06-04 14:44:43,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:43,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:43,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:44:43,238 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)] === [2024-06-04 14:44:43,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:43,238 INFO L85 PathProgramCache]: Analyzing trace with hash 73035541, now seen corresponding path program 5 times [2024-06-04 14:44:43,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:43,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338093031] [2024-06-04 14:44:43,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:43,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338093031] [2024-06-04 14:44:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338093031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212277737] [2024-06-04 14:44:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:44,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 141 transitions, 1366 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:44,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:44,456 INFO L124 PetriNetUnfolderBase]: 411/744 cut-off events. [2024-06-04 14:44:44,456 INFO L125 PetriNetUnfolderBase]: For 46274/46274 co-relation queries the response was YES. [2024-06-04 14:44:44,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5412 conditions, 744 events. 411/744 cut-off events. For 46274/46274 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3410 event pairs, 58 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 5334. Up to 561 conditions per place. [2024-06-04 14:44:44,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 47 changer transitions 0/162 dead transitions. [2024-06-04 14:44:44,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1874 flow [2024-06-04 14:44:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:44:44,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-04 14:44:44,463 INFO L175 Difference]: Start difference. First operand has 166 places, 141 transitions, 1366 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:44:44,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1874 flow [2024-06-04 14:44:44,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 162 transitions, 1733 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:44,531 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1378 flow [2024-06-04 14:44:44,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1378, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-06-04 14:44:44,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-04 14:44:44,531 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1378 flow [2024-06-04 14:44:44,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:44,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:44,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:44,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:44:44,532 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)] === [2024-06-04 14:44:44,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 227849052, now seen corresponding path program 6 times [2024-06-04 14:44:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026041032] [2024-06-04 14:44:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026041032] [2024-06-04 14:44:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026041032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:45,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515865695] [2024-06-04 14:44:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:45,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:45,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:45,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:45,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:45,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:45,879 INFO L124 PetriNetUnfolderBase]: 431/790 cut-off events. [2024-06-04 14:44:45,879 INFO L125 PetriNetUnfolderBase]: For 61569/61569 co-relation queries the response was YES. [2024-06-04 14:44:45,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 790 events. 431/790 cut-off events. For 61569/61569 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3743 event pairs, 72 based on Foata normal form. 16/804 useless extension candidates. Maximal degree in co-relation 5428. Up to 580 conditions per place. [2024-06-04 14:44:45,884 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 37 changer transitions 13/166 dead transitions. [2024-06-04 14:44:45,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 166 transitions, 1826 flow [2024-06-04 14:44:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:44:45,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-04 14:44:45,885 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1378 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:44:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 166 transitions, 1826 flow [2024-06-04 14:44:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 166 transitions, 1682 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:45,950 INFO L231 Difference]: Finished difference. Result has 173 places, 138 transitions, 1287 flow [2024-06-04 14:44:45,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1287, PETRI_PLACES=173, PETRI_TRANSITIONS=138} [2024-06-04 14:44:45,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-04 14:44:45,950 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 138 transitions, 1287 flow [2024-06-04 14:44:45,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:45,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:45,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:45,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:44:45,951 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)] === [2024-06-04 14:44:45,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 222342522, now seen corresponding path program 7 times [2024-06-04 14:44:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006036565] [2024-06-04 14:44:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006036565] [2024-06-04 14:44:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006036565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:46,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:46,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397199086] [2024-06-04 14:44:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:46,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:46,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:46,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:46,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 138 transitions, 1287 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:46,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:46,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:46,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:47,148 INFO L124 PetriNetUnfolderBase]: 397/728 cut-off events. [2024-06-04 14:44:47,148 INFO L125 PetriNetUnfolderBase]: For 49425/49425 co-relation queries the response was YES. [2024-06-04 14:44:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 728 events. 397/728 cut-off events. For 49425/49425 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3386 event pairs, 68 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 5126. Up to 571 conditions per place. [2024-06-04 14:44:47,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-04 14:44:47,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 156 transitions, 1651 flow [2024-06-04 14:44:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:44:47,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-04 14:44:47,156 INFO L175 Difference]: Start difference. First operand has 173 places, 138 transitions, 1287 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:44:47,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 156 transitions, 1651 flow [2024-06-04 14:44:47,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 156 transitions, 1547 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:44:47,254 INFO L231 Difference]: Finished difference. Result has 170 places, 139 transitions, 1291 flow [2024-06-04 14:44:47,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1291, PETRI_PLACES=170, PETRI_TRANSITIONS=139} [2024-06-04 14:44:47,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-04 14:44:47,254 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 139 transitions, 1291 flow [2024-06-04 14:44:47,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:47,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:47,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:47,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:44:47,255 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)] === [2024-06-04 14:44:47,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 222486672, now seen corresponding path program 8 times [2024-06-04 14:44:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830856498] [2024-06-04 14:44:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830856498] [2024-06-04 14:44:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830856498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725135503] [2024-06-04 14:44:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:48,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:48,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:48,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 139 transitions, 1291 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:48,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:48,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:48,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:48,546 INFO L124 PetriNetUnfolderBase]: 378/695 cut-off events. [2024-06-04 14:44:48,546 INFO L125 PetriNetUnfolderBase]: For 46724/46724 co-relation queries the response was YES. [2024-06-04 14:44:48,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 695 events. 378/695 cut-off events. For 46724/46724 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3224 event pairs, 51 based on Foata normal form. 14/707 useless extension candidates. Maximal degree in co-relation 4268. Up to 495 conditions per place. [2024-06-04 14:44:48,550 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 34 changer transitions 12/161 dead transitions. [2024-06-04 14:44:48,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 161 transitions, 1715 flow [2024-06-04 14:44:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 14:44:48,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-04 14:44:48,551 INFO L175 Difference]: Start difference. First operand has 170 places, 139 transitions, 1291 flow. Second operand 10 states and 128 transitions. [2024-06-04 14:44:48,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 161 transitions, 1715 flow [2024-06-04 14:44:48,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 161 transitions, 1631 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:48,604 INFO L231 Difference]: Finished difference. Result has 173 places, 134 transitions, 1235 flow [2024-06-04 14:44:48,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1235, PETRI_PLACES=173, PETRI_TRANSITIONS=134} [2024-06-04 14:44:48,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-04 14:44:48,605 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 134 transitions, 1235 flow [2024-06-04 14:44:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:48,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:48,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:44:48,605 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)] === [2024-06-04 14:44:48,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -350999671, now seen corresponding path program 1 times [2024-06-04 14:44:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:48,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197547762] [2024-06-04 14:44:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:49,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197547762] [2024-06-04 14:44:49,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197547762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:49,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026693323] [2024-06-04 14:44:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:49,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:49,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:49,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:49,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:49,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 134 transitions, 1235 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:49,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:49,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:49,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:49,923 INFO L124 PetriNetUnfolderBase]: 348/637 cut-off events. [2024-06-04 14:44:49,923 INFO L125 PetriNetUnfolderBase]: For 32779/32779 co-relation queries the response was YES. [2024-06-04 14:44:49,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 637 events. 348/637 cut-off events. For 32779/32779 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2874 event pairs, 45 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 3976. Up to 574 conditions per place. [2024-06-04 14:44:49,927 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 125 selfloop transitions, 22 changer transitions 1/150 dead transitions. [2024-06-04 14:44:49,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 150 transitions, 1575 flow [2024-06-04 14:44:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:44:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-04 14:44:49,928 INFO L175 Difference]: Start difference. First operand has 173 places, 134 transitions, 1235 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:44:49,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 150 transitions, 1575 flow [2024-06-04 14:44:49,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 150 transitions, 1468 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:44:49,978 INFO L231 Difference]: Finished difference. Result has 169 places, 135 transitions, 1184 flow [2024-06-04 14:44:49,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1184, PETRI_PLACES=169, PETRI_TRANSITIONS=135} [2024-06-04 14:44:49,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-04 14:44:49,979 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 135 transitions, 1184 flow [2024-06-04 14:44:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:49,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:49,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:49,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:44:49,979 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)] === [2024-06-04 14:44:49,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 222486827, now seen corresponding path program 6 times [2024-06-04 14:44:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:49,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717945350] [2024-06-04 14:44:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:49,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717945350] [2024-06-04 14:44:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717945350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127681893] [2024-06-04 14:44:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:50,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:50,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 135 transitions, 1184 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:50,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:50,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:50,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:51,252 INFO L124 PetriNetUnfolderBase]: 342/625 cut-off events. [2024-06-04 14:44:51,252 INFO L125 PetriNetUnfolderBase]: For 30949/30949 co-relation queries the response was YES. [2024-06-04 14:44:51,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 625 events. 342/625 cut-off events. For 30949/30949 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2794 event pairs, 40 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3776. Up to 475 conditions per place. [2024-06-04 14:44:51,256 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 39 changer transitions 0/151 dead transitions. [2024-06-04 14:44:51,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 151 transitions, 1520 flow [2024-06-04 14:44:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:44:51,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-04 14:44:51,257 INFO L175 Difference]: Start difference. First operand has 169 places, 135 transitions, 1184 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:44:51,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 151 transitions, 1520 flow [2024-06-04 14:44:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 151 transitions, 1440 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:51,306 INFO L231 Difference]: Finished difference. Result has 171 places, 135 transitions, 1187 flow [2024-06-04 14:44:51,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1187, PETRI_PLACES=171, PETRI_TRANSITIONS=135} [2024-06-04 14:44:51,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-04 14:44:51,306 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 135 transitions, 1187 flow [2024-06-04 14:44:51,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:51,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:51,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:44:51,307 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)] === [2024-06-04 14:44:51,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 348866201, now seen corresponding path program 2 times [2024-06-04 14:44:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:51,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797872571] [2024-06-04 14:44:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797872571] [2024-06-04 14:44:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797872571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024093583] [2024-06-04 14:44:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:52,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:52,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 135 transitions, 1187 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:52,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:52,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:52,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:52,628 INFO L124 PetriNetUnfolderBase]: 346/633 cut-off events. [2024-06-04 14:44:52,628 INFO L125 PetriNetUnfolderBase]: For 32214/32214 co-relation queries the response was YES. [2024-06-04 14:44:52,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 633 events. 346/633 cut-off events. For 32214/32214 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2842 event pairs, 42 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3822. Up to 598 conditions per place. [2024-06-04 14:44:52,632 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-04 14:44:52,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 147 transitions, 1509 flow [2024-06-04 14:44:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:44:52,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-04 14:44:52,633 INFO L175 Difference]: Start difference. First operand has 171 places, 135 transitions, 1187 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:44:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 147 transitions, 1509 flow [2024-06-04 14:44:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 147 transitions, 1411 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:52,701 INFO L231 Difference]: Finished difference. Result has 171 places, 136 transitions, 1131 flow [2024-06-04 14:44:52,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1131, PETRI_PLACES=171, PETRI_TRANSITIONS=136} [2024-06-04 14:44:52,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-04 14:44:52,702 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 136 transitions, 1131 flow [2024-06-04 14:44:52,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:52,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:52,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:44:52,702 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)] === [2024-06-04 14:44:52,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1253524757, now seen corresponding path program 3 times [2024-06-04 14:44:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:52,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143006681] [2024-06-04 14:44:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:52,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143006681] [2024-06-04 14:44:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143006681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:53,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:53,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571058885] [2024-06-04 14:44:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:53,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:53,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 136 transitions, 1131 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) [2024-06-04 14:44:53,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:53,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:53,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:53,881 INFO L124 PetriNetUnfolderBase]: 350/641 cut-off events. [2024-06-04 14:44:53,881 INFO L125 PetriNetUnfolderBase]: For 33141/33141 co-relation queries the response was YES. [2024-06-04 14:44:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 641 events. 350/641 cut-off events. For 33141/33141 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2903 event pairs, 46 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 3801. Up to 611 conditions per place. [2024-06-04 14:44:53,884 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-04 14:44:53,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 147 transitions, 1453 flow [2024-06-04 14:44:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:44:53,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-04 14:44:53,885 INFO L175 Difference]: Start difference. First operand has 171 places, 136 transitions, 1131 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:44:53,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 147 transitions, 1453 flow [2024-06-04 14:44:53,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 147 transitions, 1421 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:53,936 INFO L231 Difference]: Finished difference. Result has 173 places, 137 transitions, 1143 flow [2024-06-04 14:44:53,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1143, PETRI_PLACES=173, PETRI_TRANSITIONS=137} [2024-06-04 14:44:53,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-04 14:44:53,937 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 137 transitions, 1143 flow [2024-06-04 14:44:53,937 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) [2024-06-04 14:44:53,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:53,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:53,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:44:53,938 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)] === [2024-06-04 14:44:53,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1522169328, now seen corresponding path program 9 times [2024-06-04 14:44:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:53,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97337452] [2024-06-04 14:44:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:54,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97337452] [2024-06-04 14:44:54,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97337452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:54,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856755223] [2024-06-04 14:44:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:54,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:54,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:54,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:54,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 137 transitions, 1143 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:54,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:54,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:54,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:55,233 INFO L124 PetriNetUnfolderBase]: 383/708 cut-off events. [2024-06-04 14:44:55,233 INFO L125 PetriNetUnfolderBase]: For 48725/48725 co-relation queries the response was YES. [2024-06-04 14:44:55,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 708 events. 383/708 cut-off events. For 48725/48725 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3252 event pairs, 56 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 4669. Up to 493 conditions per place. [2024-06-04 14:44:55,238 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 116 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2024-06-04 14:44:55,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 158 transitions, 1779 flow [2024-06-04 14:44:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 14:44:55,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-04 14:44:55,239 INFO L175 Difference]: Start difference. First operand has 173 places, 137 transitions, 1143 flow. Second operand 10 states and 122 transitions. [2024-06-04 14:44:55,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 158 transitions, 1779 flow [2024-06-04 14:44:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 158 transitions, 1735 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:55,298 INFO L231 Difference]: Finished difference. Result has 175 places, 138 transitions, 1199 flow [2024-06-04 14:44:55,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1199, PETRI_PLACES=175, PETRI_TRANSITIONS=138} [2024-06-04 14:44:55,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-04 14:44:55,299 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 138 transitions, 1199 flow [2024-06-04 14:44:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:55,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:55,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:55,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:44:55,299 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)] === [2024-06-04 14:44:55,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1519548467, now seen corresponding path program 4 times [2024-06-04 14:44:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011971506] [2024-06-04 14:44:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:56,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:56,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011971506] [2024-06-04 14:44:56,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011971506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:56,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:56,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:56,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083283113] [2024-06-04 14:44:56,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:56,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:56,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:56,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:56,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:56,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:56,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 138 transitions, 1199 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:56,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:56,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:56,539 INFO L124 PetriNetUnfolderBase]: 387/716 cut-off events. [2024-06-04 14:44:56,539 INFO L125 PetriNetUnfolderBase]: For 50371/50371 co-relation queries the response was YES. [2024-06-04 14:44:56,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4869 conditions, 716 events. 387/716 cut-off events. For 50371/50371 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3317 event pairs, 63 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4786. Up to 681 conditions per place. [2024-06-04 14:44:56,543 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 135 selfloop transitions, 13 changer transitions 0/150 dead transitions. [2024-06-04 14:44:56,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 150 transitions, 1531 flow [2024-06-04 14:44:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-04 14:44:56,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-04 14:44:56,544 INFO L175 Difference]: Start difference. First operand has 175 places, 138 transitions, 1199 flow. Second operand 9 states and 96 transitions. [2024-06-04 14:44:56,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 150 transitions, 1531 flow [2024-06-04 14:44:56,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 150 transitions, 1409 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:56,616 INFO L231 Difference]: Finished difference. Result has 175 places, 139 transitions, 1121 flow [2024-06-04 14:44:56,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=175, PETRI_TRANSITIONS=139} [2024-06-04 14:44:56,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-04 14:44:56,616 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 1121 flow [2024-06-04 14:44:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:56,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:56,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:56,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:44:56,617 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)] === [2024-06-04 14:44:56,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1510017331, now seen corresponding path program 7 times [2024-06-04 14:44:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354965780] [2024-06-04 14:44:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354965780] [2024-06-04 14:44:57,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354965780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:57,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:57,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895886924] [2024-06-04 14:44:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:57,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:57,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:57,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 139 transitions, 1121 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:57,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:57,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:57,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:58,189 INFO L124 PetriNetUnfolderBase]: 393/726 cut-off events. [2024-06-04 14:44:58,189 INFO L125 PetriNetUnfolderBase]: For 52633/52633 co-relation queries the response was YES. [2024-06-04 14:44:58,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 726 events. 393/726 cut-off events. For 52633/52633 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3381 event pairs, 68 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4735. Up to 681 conditions per place. [2024-06-04 14:44:58,193 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 17 changer transitions 0/154 dead transitions. [2024-06-04 14:44:58,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 154 transitions, 1503 flow [2024-06-04 14:44:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:44:58,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-04 14:44:58,194 INFO L175 Difference]: Start difference. First operand has 175 places, 139 transitions, 1121 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:44:58,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 154 transitions, 1503 flow [2024-06-04 14:44:58,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 154 transitions, 1469 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:58,269 INFO L231 Difference]: Finished difference. Result has 178 places, 141 transitions, 1180 flow [2024-06-04 14:44:58,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1180, PETRI_PLACES=178, PETRI_TRANSITIONS=141} [2024-06-04 14:44:58,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-04 14:44:58,269 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 141 transitions, 1180 flow [2024-06-04 14:44:58,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:58,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:58,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:58,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:44:58,270 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)] === [2024-06-04 14:44:58,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1253516821, now seen corresponding path program 8 times [2024-06-04 14:44:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:58,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272939483] [2024-06-04 14:44:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:58,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:59,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:59,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272939483] [2024-06-04 14:44:59,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272939483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:59,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:59,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:59,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678406594] [2024-06-04 14:44:59,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:59,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:59,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:59,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:44:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 141 transitions, 1180 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:59,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:59,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:44:59,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:59,752 INFO L124 PetriNetUnfolderBase]: 405/746 cut-off events. [2024-06-04 14:44:59,752 INFO L125 PetriNetUnfolderBase]: For 55191/55191 co-relation queries the response was YES. [2024-06-04 14:44:59,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5011 conditions, 746 events. 405/746 cut-off events. For 55191/55191 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3507 event pairs, 66 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4928. Up to 697 conditions per place. [2024-06-04 14:44:59,757 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-04 14:44:59,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 157 transitions, 1570 flow [2024-06-04 14:44:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:44:59,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 14:44:59,758 INFO L175 Difference]: Start difference. First operand has 178 places, 141 transitions, 1180 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:44:59,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 157 transitions, 1570 flow [2024-06-04 14:44:59,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 157 transitions, 1493 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:59,838 INFO L231 Difference]: Finished difference. Result has 180 places, 145 transitions, 1206 flow [2024-06-04 14:44:59,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1206, PETRI_PLACES=180, PETRI_TRANSITIONS=145} [2024-06-04 14:44:59,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-04 14:44:59,839 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 145 transitions, 1206 flow [2024-06-04 14:44:59,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:59,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:59,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:59,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:44:59,839 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)] === [2024-06-04 14:44:59,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1253309276, now seen corresponding path program 10 times [2024-06-04 14:44:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596479318] [2024-06-04 14:44:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596479318] [2024-06-04 14:45:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596479318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:00,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:00,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808909257] [2024-06-04 14:45:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:00,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:00,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:00,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 145 transitions, 1206 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:00,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:00,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:00,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:01,169 INFO L124 PetriNetUnfolderBase]: 443/828 cut-off events. [2024-06-04 14:45:01,169 INFO L125 PetriNetUnfolderBase]: For 89956/89956 co-relation queries the response was YES. [2024-06-04 14:45:01,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5415 conditions, 828 events. 443/828 cut-off events. For 89956/89956 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4047 event pairs, 79 based on Foata normal form. 22/848 useless extension candidates. Maximal degree in co-relation 5331. Up to 682 conditions per place. [2024-06-04 14:45:01,174 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 15 changer transitions 17/166 dead transitions. [2024-06-04 14:45:01,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 166 transitions, 1685 flow [2024-06-04 14:45:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:45:01,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-04 14:45:01,175 INFO L175 Difference]: Start difference. First operand has 180 places, 145 transitions, 1206 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:45:01,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 166 transitions, 1685 flow [2024-06-04 14:45:01,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 166 transitions, 1627 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:01,257 INFO L231 Difference]: Finished difference. Result has 185 places, 138 transitions, 1140 flow [2024-06-04 14:45:01,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1140, PETRI_PLACES=185, PETRI_TRANSITIONS=138} [2024-06-04 14:45:01,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-04 14:45:01,258 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 138 transitions, 1140 flow [2024-06-04 14:45:01,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:01,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:01,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:01,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:45:01,259 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)] === [2024-06-04 14:45:01,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1253309431, now seen corresponding path program 9 times [2024-06-04 14:45:01,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:01,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202878652] [2024-06-04 14:45:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:01,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202878652] [2024-06-04 14:45:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202878652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:02,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:02,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707058397] [2024-06-04 14:45:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:02,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:02,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:02,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 138 transitions, 1140 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:02,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:02,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:02,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:02,530 INFO L124 PetriNetUnfolderBase]: 391/728 cut-off events. [2024-06-04 14:45:02,530 INFO L125 PetriNetUnfolderBase]: For 61094/61094 co-relation queries the response was YES. [2024-06-04 14:45:02,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 728 events. 391/728 cut-off events. For 61094/61094 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3424 event pairs, 63 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4898. Up to 662 conditions per place. [2024-06-04 14:45:02,535 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-04 14:45:02,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 154 transitions, 1528 flow [2024-06-04 14:45:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:45:02,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-04 14:45:02,538 INFO L175 Difference]: Start difference. First operand has 185 places, 138 transitions, 1140 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:45:02,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 154 transitions, 1528 flow [2024-06-04 14:45:02,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1473 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-04 14:45:02,621 INFO L231 Difference]: Finished difference. Result has 181 places, 140 transitions, 1194 flow [2024-06-04 14:45:02,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1194, PETRI_PLACES=181, PETRI_TRANSITIONS=140} [2024-06-04 14:45:02,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-04 14:45:02,622 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 140 transitions, 1194 flow [2024-06-04 14:45:02,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:02,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:02,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:02,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:45:02,623 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)] === [2024-06-04 14:45:02,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:02,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1522165608, now seen corresponding path program 11 times [2024-06-04 14:45:02,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148062155] [2024-06-04 14:45:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148062155] [2024-06-04 14:45:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148062155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100630724] [2024-06-04 14:45:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:03,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:03,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:03,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 140 transitions, 1194 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:03,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:03,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:03,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:03,699 INFO L124 PetriNetUnfolderBase]: 395/736 cut-off events. [2024-06-04 14:45:03,699 INFO L125 PetriNetUnfolderBase]: For 58917/58917 co-relation queries the response was YES. [2024-06-04 14:45:03,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5015 conditions, 736 events. 395/736 cut-off events. For 58917/58917 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3487 event pairs, 69 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4930. Up to 679 conditions per place. [2024-06-04 14:45:03,704 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 30 changer transitions 0/152 dead transitions. [2024-06-04 14:45:03,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 152 transitions, 1539 flow [2024-06-04 14:45:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:45:03,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-04 14:45:03,705 INFO L175 Difference]: Start difference. First operand has 181 places, 140 transitions, 1194 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:45:03,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 152 transitions, 1539 flow [2024-06-04 14:45:03,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 152 transitions, 1446 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:03,790 INFO L231 Difference]: Finished difference. Result has 184 places, 142 transitions, 1195 flow [2024-06-04 14:45:03,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1195, PETRI_PLACES=184, PETRI_TRANSITIONS=142} [2024-06-04 14:45:03,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-04 14:45:03,790 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 142 transitions, 1195 flow [2024-06-04 14:45:03,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:03,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:03,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:45:03,791 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)] === [2024-06-04 14:45:03,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1522165453, now seen corresponding path program 10 times [2024-06-04 14:45:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:03,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858998239] [2024-06-04 14:45:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:04,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858998239] [2024-06-04 14:45:04,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858998239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:04,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:04,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:04,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817029854] [2024-06-04 14:45:04,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:04,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:04,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:04,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:04,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 142 transitions, 1195 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:04,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:04,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:05,323 INFO L124 PetriNetUnfolderBase]: 401/746 cut-off events. [2024-06-04 14:45:05,324 INFO L125 PetriNetUnfolderBase]: For 60745/60745 co-relation queries the response was YES. [2024-06-04 14:45:05,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 746 events. 401/746 cut-off events. For 60745/60745 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3540 event pairs, 62 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 5012. Up to 625 conditions per place. [2024-06-04 14:45:05,328 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 42 changer transitions 0/164 dead transitions. [2024-06-04 14:45:05,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 164 transitions, 1795 flow [2024-06-04 14:45:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:45:05,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-04 14:45:05,329 INFO L175 Difference]: Start difference. First operand has 184 places, 142 transitions, 1195 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:45:05,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 164 transitions, 1795 flow [2024-06-04 14:45:05,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 164 transitions, 1724 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:45:05,411 INFO L231 Difference]: Finished difference. Result has 189 places, 146 transitions, 1334 flow [2024-06-04 14:45:05,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1334, PETRI_PLACES=189, PETRI_TRANSITIONS=146} [2024-06-04 14:45:05,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-04 14:45:05,412 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 146 transitions, 1334 flow [2024-06-04 14:45:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:05,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:05,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:45:05,412 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)] === [2024-06-04 14:45:05,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:05,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1516443597, now seen corresponding path program 5 times [2024-06-04 14:45:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:05,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027938877] [2024-06-04 14:45:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027938877] [2024-06-04 14:45:06,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027938877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:06,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:06,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:06,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999950378] [2024-06-04 14:45:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:06,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:06,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 146 transitions, 1334 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:06,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:06,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:06,744 INFO L124 PetriNetUnfolderBase]: 398/741 cut-off events. [2024-06-04 14:45:06,745 INFO L125 PetriNetUnfolderBase]: For 59728/59728 co-relation queries the response was YES. [2024-06-04 14:45:06,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5034 conditions, 741 events. 398/741 cut-off events. For 59728/59728 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3507 event pairs, 68 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 4946. Up to 699 conditions per place. [2024-06-04 14:45:06,749 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 138 selfloop transitions, 17 changer transitions 0/157 dead transitions. [2024-06-04 14:45:06,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 157 transitions, 1668 flow [2024-06-04 14:45:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:45:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:45:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:45:06,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-04 14:45:06,750 INFO L175 Difference]: Start difference. First operand has 189 places, 146 transitions, 1334 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:45:06,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 157 transitions, 1668 flow [2024-06-04 14:45:06,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 157 transitions, 1552 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:06,832 INFO L231 Difference]: Finished difference. Result has 190 places, 146 transitions, 1256 flow [2024-06-04 14:45:06,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=190, PETRI_TRANSITIONS=146} [2024-06-04 14:45:06,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-04 14:45:06,833 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 146 transitions, 1256 flow [2024-06-04 14:45:06,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:06,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:06,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:06,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:45:06,834 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)] === [2024-06-04 14:45:06,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:06,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1522021458, now seen corresponding path program 12 times [2024-06-04 14:45:06,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:06,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174616202] [2024-06-04 14:45:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:06,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:07,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174616202] [2024-06-04 14:45:07,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174616202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:07,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:07,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:07,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279829166] [2024-06-04 14:45:07,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:07,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:07,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:07,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 146 transitions, 1256 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:07,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:07,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:07,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:08,111 INFO L124 PetriNetUnfolderBase]: 430/813 cut-off events. [2024-06-04 14:45:08,112 INFO L125 PetriNetUnfolderBase]: For 94632/94632 co-relation queries the response was YES. [2024-06-04 14:45:08,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5324 conditions, 813 events. 430/813 cut-off events. For 94632/94632 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3996 event pairs, 77 based on Foata normal form. 20/831 useless extension candidates. Maximal degree in co-relation 5234. Up to 660 conditions per place. [2024-06-04 14:45:08,120 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 24 changer transitions 12/166 dead transitions. [2024-06-04 14:45:08,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 166 transitions, 1709 flow [2024-06-04 14:45:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:45:08,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-04 14:45:08,122 INFO L175 Difference]: Start difference. First operand has 190 places, 146 transitions, 1256 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:45:08,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 166 transitions, 1709 flow [2024-06-04 14:45:08,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 166 transitions, 1627 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:08,231 INFO L231 Difference]: Finished difference. Result has 190 places, 142 transitions, 1204 flow [2024-06-04 14:45:08,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1204, PETRI_PLACES=190, PETRI_TRANSITIONS=142} [2024-06-04 14:45:08,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-04 14:45:08,232 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 142 transitions, 1204 flow [2024-06-04 14:45:08,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:08,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:08,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:45:08,232 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)] === [2024-06-04 14:45:08,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1516659078, now seen corresponding path program 13 times [2024-06-04 14:45:08,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:08,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279611895] [2024-06-04 14:45:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:08,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279611895] [2024-06-04 14:45:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279611895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:09,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:09,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865591380] [2024-06-04 14:45:09,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:09,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:09,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 142 transitions, 1204 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:09,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:09,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:09,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:09,480 INFO L124 PetriNetUnfolderBase]: 380/721 cut-off events. [2024-06-04 14:45:09,480 INFO L125 PetriNetUnfolderBase]: For 72659/72659 co-relation queries the response was YES. [2024-06-04 14:45:09,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 721 events. 380/721 cut-off events. For 72659/72659 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3473 event pairs, 53 based on Foata normal form. 22/741 useless extension candidates. Maximal degree in co-relation 3861. Up to 574 conditions per place. [2024-06-04 14:45:09,485 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 20 changer transitions 13/161 dead transitions. [2024-06-04 14:45:09,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 161 transitions, 1630 flow [2024-06-04 14:45:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:45:09,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-04 14:45:09,487 INFO L175 Difference]: Start difference. First operand has 190 places, 142 transitions, 1204 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:45:09,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 161 transitions, 1630 flow [2024-06-04 14:45:09,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 161 transitions, 1525 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-04 14:45:09,562 INFO L231 Difference]: Finished difference. Result has 189 places, 136 transitions, 1099 flow [2024-06-04 14:45:09,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1099, PETRI_PLACES=189, PETRI_TRANSITIONS=136} [2024-06-04 14:45:09,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-04 14:45:09,562 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 136 transitions, 1099 flow [2024-06-04 14:45:09,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:09,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:09,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:09,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:45:09,563 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)] === [2024-06-04 14:45:09,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1516658923, now seen corresponding path program 11 times [2024-06-04 14:45:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:09,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570672022] [2024-06-04 14:45:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:10,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:10,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570672022] [2024-06-04 14:45:10,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570672022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:10,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:10,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:45:10,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536762729] [2024-06-04 14:45:10,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:10,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:45:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:45:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:45:10,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:10,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 136 transitions, 1099 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:10,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:10,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:10,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:10,730 INFO L124 PetriNetUnfolderBase]: 330/625 cut-off events. [2024-06-04 14:45:10,730 INFO L125 PetriNetUnfolderBase]: For 31243/31243 co-relation queries the response was YES. [2024-06-04 14:45:10,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 625 events. 330/625 cut-off events. For 31243/31243 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2942 event pairs, 36 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3151. Up to 546 conditions per place. [2024-06-04 14:45:10,734 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 25 changer transitions 0/149 dead transitions. [2024-06-04 14:45:10,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 149 transitions, 1421 flow [2024-06-04 14:45:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:45:10,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-04 14:45:10,735 INFO L175 Difference]: Start difference. First operand has 189 places, 136 transitions, 1099 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:45:10,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 149 transitions, 1421 flow [2024-06-04 14:45:10,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 149 transitions, 1259 flow, removed 22 selfloop flow, removed 14 redundant places. [2024-06-04 14:45:10,802 INFO L231 Difference]: Finished difference. Result has 185 places, 136 transitions, 992 flow [2024-06-04 14:45:10,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=992, PETRI_PLACES=185, PETRI_TRANSITIONS=136} [2024-06-04 14:45:10,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-04 14:45:10,803 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 136 transitions, 992 flow [2024-06-04 14:45:10,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:10,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:10,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:10,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:45:10,803 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)] === [2024-06-04 14:45:10,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash 222077449, now seen corresponding path program 1 times [2024-06-04 14:45:10,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:10,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714141773] [2024-06-04 14:45:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:10,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714141773] [2024-06-04 14:45:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714141773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:11,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:11,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:11,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045469584] [2024-06-04 14:45:11,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:11,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:11,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:11,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:11,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 136 transitions, 992 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:11,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:11,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:11,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:12,283 INFO L124 PetriNetUnfolderBase]: 371/712 cut-off events. [2024-06-04 14:45:12,283 INFO L125 PetriNetUnfolderBase]: For 65452/65452 co-relation queries the response was YES. [2024-06-04 14:45:12,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 712 events. 371/712 cut-off events. For 65452/65452 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3426 event pairs, 57 based on Foata normal form. 8/718 useless extension candidates. Maximal degree in co-relation 4072. Up to 436 conditions per place. [2024-06-04 14:45:12,287 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 22 changer transitions 16/169 dead transitions. [2024-06-04 14:45:12,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 169 transitions, 1620 flow [2024-06-04 14:45:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:45:12,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-04 14:45:12,288 INFO L175 Difference]: Start difference. First operand has 185 places, 136 transitions, 992 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:45:12,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 169 transitions, 1620 flow [2024-06-04 14:45:12,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 169 transitions, 1496 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-04 14:45:12,389 INFO L231 Difference]: Finished difference. Result has 186 places, 132 transitions, 907 flow [2024-06-04 14:45:12,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=907, PETRI_PLACES=186, PETRI_TRANSITIONS=132} [2024-06-04 14:45:12,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-04 14:45:12,389 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 132 transitions, 907 flow [2024-06-04 14:45:12,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:12,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:12,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:12,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:45:12,390 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)] === [2024-06-04 14:45:12,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash 280285219, now seen corresponding path program 2 times [2024-06-04 14:45:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368777692] [2024-06-04 14:45:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:13,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:13,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368777692] [2024-06-04 14:45:13,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368777692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:13,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121410120] [2024-06-04 14:45:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:13,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:13,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:13,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:13,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:13,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 132 transitions, 907 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:13,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:13,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:13,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:14,138 INFO L124 PetriNetUnfolderBase]: 380/733 cut-off events. [2024-06-04 14:45:14,138 INFO L125 PetriNetUnfolderBase]: For 89029/89029 co-relation queries the response was YES. [2024-06-04 14:45:14,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 733 events. 380/733 cut-off events. For 89029/89029 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3605 event pairs, 70 based on Foata normal form. 8/739 useless extension candidates. Maximal degree in co-relation 4769. Up to 555 conditions per place. [2024-06-04 14:45:14,143 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 23 changer transitions 7/161 dead transitions. [2024-06-04 14:45:14,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 161 transitions, 1497 flow [2024-06-04 14:45:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:45:14,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-04 14:45:14,144 INFO L175 Difference]: Start difference. First operand has 186 places, 132 transitions, 907 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:45:14,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 161 transitions, 1497 flow [2024-06-04 14:45:14,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 161 transitions, 1448 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 14:45:14,238 INFO L231 Difference]: Finished difference. Result has 181 places, 130 transitions, 901 flow [2024-06-04 14:45:14,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=901, PETRI_PLACES=181, PETRI_TRANSITIONS=130} [2024-06-04 14:45:14,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-04 14:45:14,239 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 130 transitions, 901 flow [2024-06-04 14:45:14,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:14,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:14,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:45:14,239 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)] === [2024-06-04 14:45:14,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 280289869, now seen corresponding path program 3 times [2024-06-04 14:45:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:14,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420681029] [2024-06-04 14:45:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:15,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:15,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420681029] [2024-06-04 14:45:15,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420681029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:15,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:15,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:15,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493953709] [2024-06-04 14:45:15,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:15,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:15,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:15,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 130 transitions, 901 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:15,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:15,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:15,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:15,729 INFO L124 PetriNetUnfolderBase]: 349/672 cut-off events. [2024-06-04 14:45:15,729 INFO L125 PetriNetUnfolderBase]: For 65309/65309 co-relation queries the response was YES. [2024-06-04 14:45:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3920 conditions, 672 events. 349/672 cut-off events. For 65309/65309 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3238 event pairs, 61 based on Foata normal form. 10/680 useless extension candidates. Maximal degree in co-relation 3835. Up to 555 conditions per place. [2024-06-04 14:45:15,733 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 20 changer transitions 13/154 dead transitions. [2024-06-04 14:45:15,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 154 transitions, 1311 flow [2024-06-04 14:45:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:45:15,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-04 14:45:15,734 INFO L175 Difference]: Start difference. First operand has 181 places, 130 transitions, 901 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:45:15,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 154 transitions, 1311 flow [2024-06-04 14:45:15,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 154 transitions, 1265 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:15,830 INFO L231 Difference]: Finished difference. Result has 182 places, 126 transitions, 873 flow [2024-06-04 14:45:15,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=182, PETRI_TRANSITIONS=126} [2024-06-04 14:45:15,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-04 14:45:15,831 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 126 transitions, 873 flow [2024-06-04 14:45:15,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:15,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:15,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:45:15,831 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)] === [2024-06-04 14:45:15,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1978131125, now seen corresponding path program 4 times [2024-06-04 14:45:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160952076] [2024-06-04 14:45:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:16,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:16,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160952076] [2024-06-04 14:45:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160952076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:16,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:16,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285351649] [2024-06-04 14:45:16,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:16,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:16,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:16,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:16,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:16,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 126 transitions, 873 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:16,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:16,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:16,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:17,144 INFO L124 PetriNetUnfolderBase]: 336/649 cut-off events. [2024-06-04 14:45:17,145 INFO L125 PetriNetUnfolderBase]: For 60843/60843 co-relation queries the response was YES. [2024-06-04 14:45:17,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 649 events. 336/649 cut-off events. For 60843/60843 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3096 event pairs, 55 based on Foata normal form. 8/655 useless extension candidates. Maximal degree in co-relation 3705. Up to 537 conditions per place. [2024-06-04 14:45:17,149 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 17 changer transitions 18/150 dead transitions. [2024-06-04 14:45:17,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 150 transitions, 1249 flow [2024-06-04 14:45:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:45:17,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-04 14:45:17,150 INFO L175 Difference]: Start difference. First operand has 182 places, 126 transitions, 873 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:45:17,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 150 transitions, 1249 flow [2024-06-04 14:45:17,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 150 transitions, 1205 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:17,223 INFO L231 Difference]: Finished difference. Result has 178 places, 121 transitions, 833 flow [2024-06-04 14:45:17,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=833, PETRI_PLACES=178, PETRI_TRANSITIONS=121} [2024-06-04 14:45:17,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-04 14:45:17,223 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 121 transitions, 833 flow [2024-06-04 14:45:17,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:17,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:17,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:45:17,224 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)] === [2024-06-04 14:45:17,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1322767317, now seen corresponding path program 5 times [2024-06-04 14:45:17,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:17,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782430203] [2024-06-04 14:45:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:18,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:18,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782430203] [2024-06-04 14:45:18,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782430203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:18,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:18,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420165406] [2024-06-04 14:45:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:18,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:18,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:18,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:18,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 121 transitions, 833 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:18,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:18,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:18,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:18,720 INFO L124 PetriNetUnfolderBase]: 354/686 cut-off events. [2024-06-04 14:45:18,720 INFO L125 PetriNetUnfolderBase]: For 78816/78816 co-relation queries the response was YES. [2024-06-04 14:45:18,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 686 events. 354/686 cut-off events. For 78816/78816 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3343 event pairs, 68 based on Foata normal form. 8/692 useless extension candidates. Maximal degree in co-relation 4481. Up to 541 conditions per place. [2024-06-04 14:45:18,724 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 124 selfloop transitions, 13 changer transitions 7/146 dead transitions. [2024-06-04 14:45:18,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 146 transitions, 1375 flow [2024-06-04 14:45:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:45:18,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-04 14:45:18,726 INFO L175 Difference]: Start difference. First operand has 178 places, 121 transitions, 833 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:45:18,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 146 transitions, 1375 flow [2024-06-04 14:45:18,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 146 transitions, 1305 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 14:45:18,798 INFO L231 Difference]: Finished difference. Result has 169 places, 120 transitions, 796 flow [2024-06-04 14:45:18,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=796, PETRI_PLACES=169, PETRI_TRANSITIONS=120} [2024-06-04 14:45:18,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-04 14:45:18,798 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 120 transitions, 796 flow [2024-06-04 14:45:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:18,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:18,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:45:18,799 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)] === [2024-06-04 14:45:18,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash 375198559, now seen corresponding path program 6 times [2024-06-04 14:45:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763848095] [2024-06-04 14:45:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763848095] [2024-06-04 14:45:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763848095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:19,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:19,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131517111] [2024-06-04 14:45:19,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:19,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:19,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 120 transitions, 796 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:19,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:19,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:19,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:20,293 INFO L124 PetriNetUnfolderBase]: 323/625 cut-off events. [2024-06-04 14:45:20,293 INFO L125 PetriNetUnfolderBase]: For 59221/59221 co-relation queries the response was YES. [2024-06-04 14:45:20,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 625 events. 323/625 cut-off events. For 59221/59221 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2979 event pairs, 59 based on Foata normal form. 10/633 useless extension candidates. Maximal degree in co-relation 3545. Up to 541 conditions per place. [2024-06-04 14:45:20,296 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 9 changer transitions 15/139 dead transitions. [2024-06-04 14:45:20,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 139 transitions, 1160 flow [2024-06-04 14:45:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:45:20,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-04 14:45:20,297 INFO L175 Difference]: Start difference. First operand has 169 places, 120 transitions, 796 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:45:20,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 139 transitions, 1160 flow [2024-06-04 14:45:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 139 transitions, 1130 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:20,374 INFO L231 Difference]: Finished difference. Result has 169 places, 115 transitions, 755 flow [2024-06-04 14:45:20,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=755, PETRI_PLACES=169, PETRI_TRANSITIONS=115} [2024-06-04 14:45:20,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-04 14:45:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 115 transitions, 755 flow [2024-06-04 14:45:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:20,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:20,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:20,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:45:20,375 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)] === [2024-06-04 14:45:20,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 370609939, now seen corresponding path program 7 times [2024-06-04 14:45:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:20,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743941632] [2024-06-04 14:45:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:21,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:21,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743941632] [2024-06-04 14:45:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743941632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:21,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387027608] [2024-06-04 14:45:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:21,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:21,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:21,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:21,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 115 transitions, 755 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:21,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:21,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:21,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:22,121 INFO L124 PetriNetUnfolderBase]: 309/599 cut-off events. [2024-06-04 14:45:22,121 INFO L125 PetriNetUnfolderBase]: For 55256/55256 co-relation queries the response was YES. [2024-06-04 14:45:22,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3481 conditions, 599 events. 309/599 cut-off events. For 55256/55256 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2817 event pairs, 47 based on Foata normal form. 8/605 useless extension candidates. Maximal degree in co-relation 3399. Up to 436 conditions per place. [2024-06-04 14:45:22,125 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 116 selfloop transitions, 12 changer transitions 10/140 dead transitions. [2024-06-04 14:45:22,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 140 transitions, 1277 flow [2024-06-04 14:45:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:45:22,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-04 14:45:22,126 INFO L175 Difference]: Start difference. First operand has 169 places, 115 transitions, 755 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:45:22,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 140 transitions, 1277 flow [2024-06-04 14:45:22,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 140 transitions, 1239 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:45:22,187 INFO L231 Difference]: Finished difference. Result has 163 places, 112 transitions, 738 flow [2024-06-04 14:45:22,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=163, PETRI_TRANSITIONS=112} [2024-06-04 14:45:22,188 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-04 14:45:22,188 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 112 transitions, 738 flow [2024-06-04 14:45:22,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:22,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:22,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:22,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:45:22,188 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)] === [2024-06-04 14:45:22,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1327231317, now seen corresponding path program 8 times [2024-06-04 14:45:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266560402] [2024-06-04 14:45:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:22,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:23,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266560402] [2024-06-04 14:45:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266560402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:23,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:23,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441154923] [2024-06-04 14:45:23,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:23,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:23,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:23,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:23,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:23,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 112 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:23,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:23,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:23,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:23,522 INFO L124 PetriNetUnfolderBase]: 296/576 cut-off events. [2024-06-04 14:45:23,522 INFO L125 PetriNetUnfolderBase]: For 51834/51834 co-relation queries the response was YES. [2024-06-04 14:45:23,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 576 events. 296/576 cut-off events. For 51834/51834 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2684 event pairs, 56 based on Foata normal form. 10/584 useless extension candidates. Maximal degree in co-relation 3137. Up to 492 conditions per place. [2024-06-04 14:45:23,526 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 11 changer transitions 11/131 dead transitions. [2024-06-04 14:45:23,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 131 transitions, 1084 flow [2024-06-04 14:45:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:45:23,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-04 14:45:23,527 INFO L175 Difference]: Start difference. First operand has 163 places, 112 transitions, 738 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:45:23,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 131 transitions, 1084 flow [2024-06-04 14:45:23,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 131 transitions, 1057 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:23,574 INFO L231 Difference]: Finished difference. Result has 160 places, 109 transitions, 716 flow [2024-06-04 14:45:23,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=716, PETRI_PLACES=160, PETRI_TRANSITIONS=109} [2024-06-04 14:45:23,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-04 14:45:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 109 transitions, 716 flow [2024-06-04 14:45:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:23,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:23,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:45:23,576 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)] === [2024-06-04 14:45:23,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash 370725259, now seen corresponding path program 9 times [2024-06-04 14:45:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048020115] [2024-06-04 14:45:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:24,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048020115] [2024-06-04 14:45:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048020115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:24,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:24,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063765597] [2024-06-04 14:45:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:24,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:25,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:25,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 109 transitions, 716 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:25,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:25,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:25,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:25,463 INFO L124 PetriNetUnfolderBase]: 262/510 cut-off events. [2024-06-04 14:45:25,463 INFO L125 PetriNetUnfolderBase]: For 32189/32189 co-relation queries the response was YES. [2024-06-04 14:45:25,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 510 events. 262/510 cut-off events. For 32189/32189 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2283 event pairs, 34 based on Foata normal form. 8/516 useless extension candidates. Maximal degree in co-relation 2377. Up to 436 conditions per place. [2024-06-04 14:45:25,466 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 6 changer transitions 20/127 dead transitions. [2024-06-04 14:45:25,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 127 transitions, 1028 flow [2024-06-04 14:45:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 14:45:25,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-04 14:45:25,467 INFO L175 Difference]: Start difference. First operand has 160 places, 109 transitions, 716 flow. Second operand 11 states and 114 transitions. [2024-06-04 14:45:25,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 127 transitions, 1028 flow [2024-06-04 14:45:25,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 127 transitions, 998 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:25,510 INFO L231 Difference]: Finished difference. Result has 158 places, 103 transitions, 670 flow [2024-06-04 14:45:25,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=670, PETRI_PLACES=158, PETRI_TRANSITIONS=103} [2024-06-04 14:45:25,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-04 14:45:25,510 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 103 transitions, 670 flow [2024-06-04 14:45:25,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:25,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:25,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:25,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:45:25,511 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)] === [2024-06-04 14:45:25,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -326227943, now seen corresponding path program 1 times [2024-06-04 14:45:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:25,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925209703] [2024-06-04 14:45:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:25,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925209703] [2024-06-04 14:45:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925209703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:26,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078424776] [2024-06-04 14:45:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:26,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:26,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:26,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:26,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 103 transitions, 670 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:26,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:26,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:26,852 INFO L124 PetriNetUnfolderBase]: 241/462 cut-off events. [2024-06-04 14:45:26,852 INFO L125 PetriNetUnfolderBase]: For 21940/21940 co-relation queries the response was YES. [2024-06-04 14:45:26,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 462 events. 241/462 cut-off events. For 21940/21940 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2017 event pairs, 36 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2192. Up to 370 conditions per place. [2024-06-04 14:45:26,854 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2024-06-04 14:45:26,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 117 transitions, 938 flow [2024-06-04 14:45:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:45:26,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-04 14:45:26,855 INFO L175 Difference]: Start difference. First operand has 158 places, 103 transitions, 670 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:45:26,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 117 transitions, 938 flow [2024-06-04 14:45:26,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 117 transitions, 901 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:26,900 INFO L231 Difference]: Finished difference. Result has 145 places, 104 transitions, 695 flow [2024-06-04 14:45:26,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=695, PETRI_PLACES=145, PETRI_TRANSITIONS=104} [2024-06-04 14:45:26,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-04 14:45:26,901 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 104 transitions, 695 flow [2024-06-04 14:45:26,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:26,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:26,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:45:26,902 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)] === [2024-06-04 14:45:26,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash -694665373, now seen corresponding path program 10 times [2024-06-04 14:45:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370285557] [2024-06-04 14:45:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370285557] [2024-06-04 14:45:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370285557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548155553] [2024-06-04 14:45:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:28,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:28,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:28,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 104 transitions, 695 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:28,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:28,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:28,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:28,427 INFO L124 PetriNetUnfolderBase]: 257/498 cut-off events. [2024-06-04 14:45:28,427 INFO L125 PetriNetUnfolderBase]: For 29453/29453 co-relation queries the response was YES. [2024-06-04 14:45:28,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 498 events. 257/498 cut-off events. For 29453/29453 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2244 event pairs, 42 based on Foata normal form. 10/506 useless extension candidates. Maximal degree in co-relation 2294. Up to 369 conditions per place. [2024-06-04 14:45:28,429 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 22 changer transitions 11/122 dead transitions. [2024-06-04 14:45:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 122 transitions, 1007 flow [2024-06-04 14:45:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:45:28,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 14:45:28,430 INFO L175 Difference]: Start difference. First operand has 145 places, 104 transitions, 695 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:45:28,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 122 transitions, 1007 flow [2024-06-04 14:45:28,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 122 transitions, 957 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:28,464 INFO L231 Difference]: Finished difference. Result has 148 places, 101 transitions, 676 flow [2024-06-04 14:45:28,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=676, PETRI_PLACES=148, PETRI_TRANSITIONS=101} [2024-06-04 14:45:28,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-04 14:45:28,464 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 101 transitions, 676 flow [2024-06-04 14:45:28,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:28,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:28,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:28,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:45:28,465 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)] === [2024-06-04 14:45:28,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1997233643, now seen corresponding path program 11 times [2024-06-04 14:45:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037136775] [2024-06-04 14:45:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037136775] [2024-06-04 14:45:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037136775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79175760] [2024-06-04 14:45:29,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:29,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:29,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:29,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 101 transitions, 676 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:29,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:29,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:29,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:29,858 INFO L124 PetriNetUnfolderBase]: 245/478 cut-off events. [2024-06-04 14:45:29,858 INFO L125 PetriNetUnfolderBase]: For 27796/27796 co-relation queries the response was YES. [2024-06-04 14:45:29,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 478 events. 245/478 cut-off events. For 27796/27796 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2134 event pairs, 38 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 2200. Up to 359 conditions per place. [2024-06-04 14:45:29,860 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 19 changer transitions 13/118 dead transitions. [2024-06-04 14:45:29,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 118 transitions, 960 flow [2024-06-04 14:45:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:45:29,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:45:29,861 INFO L175 Difference]: Start difference. First operand has 148 places, 101 transitions, 676 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:45:29,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 118 transitions, 960 flow [2024-06-04 14:45:29,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 118 transitions, 912 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:29,895 INFO L231 Difference]: Finished difference. Result has 146 places, 97 transitions, 646 flow [2024-06-04 14:45:29,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=646, PETRI_PLACES=146, PETRI_TRANSITIONS=97} [2024-06-04 14:45:29,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-04 14:45:29,896 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 97 transitions, 646 flow [2024-06-04 14:45:29,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:29,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:29,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:29,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:45:29,896 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)] === [2024-06-04 14:45:29,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:29,897 INFO L85 PathProgramCache]: Analyzing trace with hash -865487773, now seen corresponding path program 12 times [2024-06-04 14:45:29,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:29,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036553929] [2024-06-04 14:45:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:29,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036553929] [2024-06-04 14:45:30,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036553929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:30,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:30,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353855799] [2024-06-04 14:45:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:30,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:30,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 97 transitions, 646 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:30,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:30,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:30,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:31,317 INFO L124 PetriNetUnfolderBase]: 266/521 cut-off events. [2024-06-04 14:45:31,317 INFO L125 PetriNetUnfolderBase]: For 40041/40041 co-relation queries the response was YES. [2024-06-04 14:45:31,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 521 events. 266/521 cut-off events. For 40041/40041 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2333 event pairs, 45 based on Foata normal form. 8/527 useless extension candidates. Maximal degree in co-relation 2870. Up to 266 conditions per place. [2024-06-04 14:45:31,320 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 28 changer transitions 10/122 dead transitions. [2024-06-04 14:45:31,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 122 transitions, 1092 flow [2024-06-04 14:45:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:45:31,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-04 14:45:31,321 INFO L175 Difference]: Start difference. First operand has 146 places, 97 transitions, 646 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:45:31,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 122 transitions, 1092 flow [2024-06-04 14:45:31,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 122 transitions, 1038 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:31,374 INFO L231 Difference]: Finished difference. Result has 140 places, 94 transitions, 644 flow [2024-06-04 14:45:31,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=644, PETRI_PLACES=140, PETRI_TRANSITIONS=94} [2024-06-04 14:45:31,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-04 14:45:31,375 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 94 transitions, 644 flow [2024-06-04 14:45:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:31,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:31,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:31,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:45:31,375 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)] === [2024-06-04 14:45:31,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1826531213, now seen corresponding path program 13 times [2024-06-04 14:45:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:31,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286258258] [2024-06-04 14:45:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:31,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:32,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:32,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286258258] [2024-06-04 14:45:32,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286258258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:32,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:32,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197829421] [2024-06-04 14:45:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:32,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:32,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:32,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:32,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:32,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 94 transitions, 644 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:32,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:32,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:32,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:32,888 INFO L124 PetriNetUnfolderBase]: 285/562 cut-off events. [2024-06-04 14:45:32,888 INFO L125 PetriNetUnfolderBase]: For 47493/47493 co-relation queries the response was YES. [2024-06-04 14:45:32,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 562 events. 285/562 cut-off events. For 47493/47493 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2603 event pairs, 66 based on Foata normal form. 8/568 useless extension candidates. Maximal degree in co-relation 3490. Up to 341 conditions per place. [2024-06-04 14:45:32,892 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 28 changer transitions 7/119 dead transitions. [2024-06-04 14:45:32,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 119 transitions, 1078 flow [2024-06-04 14:45:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:45:32,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-04 14:45:32,892 INFO L175 Difference]: Start difference. First operand has 140 places, 94 transitions, 644 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:45:32,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 119 transitions, 1078 flow [2024-06-04 14:45:32,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 119 transitions, 1016 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:32,945 INFO L231 Difference]: Finished difference. Result has 137 places, 92 transitions, 635 flow [2024-06-04 14:45:32,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=635, PETRI_PLACES=137, PETRI_TRANSITIONS=92} [2024-06-04 14:45:32,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-04 14:45:32,945 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 92 transitions, 635 flow [2024-06-04 14:45:32,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:32,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:32,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:45:32,945 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)] === [2024-06-04 14:45:32,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash -499141417, now seen corresponding path program 14 times [2024-06-04 14:45:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086381193] [2024-06-04 14:45:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:34,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:34,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086381193] [2024-06-04 14:45:34,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086381193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:34,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:34,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108055913] [2024-06-04 14:45:34,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:34,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:34,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:34,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 92 transitions, 635 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:34,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:34,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:34,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:34,534 INFO L124 PetriNetUnfolderBase]: 279/552 cut-off events. [2024-06-04 14:45:34,534 INFO L125 PetriNetUnfolderBase]: For 43739/43739 co-relation queries the response was YES. [2024-06-04 14:45:34,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3477 conditions, 552 events. 279/552 cut-off events. For 43739/43739 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2555 event pairs, 66 based on Foata normal form. 8/558 useless extension candidates. Maximal degree in co-relation 3410. Up to 343 conditions per place. [2024-06-04 14:45:34,539 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 25 changer transitions 7/116 dead transitions. [2024-06-04 14:45:34,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 116 transitions, 1057 flow [2024-06-04 14:45:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:45:34,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-04 14:45:34,540 INFO L175 Difference]: Start difference. First operand has 137 places, 92 transitions, 635 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:45:34,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 116 transitions, 1057 flow [2024-06-04 14:45:34,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 116 transitions, 995 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:34,593 INFO L231 Difference]: Finished difference. Result has 136 places, 90 transitions, 617 flow [2024-06-04 14:45:34,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=617, PETRI_PLACES=136, PETRI_TRANSITIONS=90} [2024-06-04 14:45:34,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-04 14:45:34,593 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 90 transitions, 617 flow [2024-06-04 14:45:34,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:34,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:34,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:34,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:45:34,594 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)] === [2024-06-04 14:45:34,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2093400653, now seen corresponding path program 15 times [2024-06-04 14:45:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508935291] [2024-06-04 14:45:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508935291] [2024-06-04 14:45:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508935291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:35,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:35,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:35,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487491740] [2024-06-04 14:45:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:35,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:35,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 90 transitions, 617 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:35,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:35,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:35,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:35,930 INFO L124 PetriNetUnfolderBase]: 248/491 cut-off events. [2024-06-04 14:45:35,930 INFO L125 PetriNetUnfolderBase]: For 33683/33683 co-relation queries the response was YES. [2024-06-04 14:45:35,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2780 conditions, 491 events. 248/491 cut-off events. For 33683/33683 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2185 event pairs, 43 based on Foata normal form. 10/499 useless extension candidates. Maximal degree in co-relation 2714. Up to 331 conditions per place. [2024-06-04 14:45:35,934 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 23 changer transitions 14/110 dead transitions. [2024-06-04 14:45:35,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 110 transitions, 909 flow [2024-06-04 14:45:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:45:35,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-04 14:45:35,935 INFO L175 Difference]: Start difference. First operand has 136 places, 90 transitions, 617 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:45:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 110 transitions, 909 flow [2024-06-04 14:45:35,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 110 transitions, 857 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:35,978 INFO L231 Difference]: Finished difference. Result has 135 places, 85 transitions, 583 flow [2024-06-04 14:45:35,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=583, PETRI_PLACES=135, PETRI_TRANSITIONS=85} [2024-06-04 14:45:35,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-04 14:45:35,978 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 85 transitions, 583 flow [2024-06-04 14:45:35,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:35,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:35,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:35,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:45:35,979 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)] === [2024-06-04 14:45:35,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash -499136767, now seen corresponding path program 16 times [2024-06-04 14:45:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256065669] [2024-06-04 14:45:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:36,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:36,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256065669] [2024-06-04 14:45:36,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256065669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:36,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:36,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:36,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877693260] [2024-06-04 14:45:36,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:36,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:36,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:36,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:36,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:36,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:36,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 85 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:36,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:36,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:36,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:37,211 INFO L124 PetriNetUnfolderBase]: 209/414 cut-off events. [2024-06-04 14:45:37,212 INFO L125 PetriNetUnfolderBase]: For 22100/22100 co-relation queries the response was YES. [2024-06-04 14:45:37,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 414 events. 209/414 cut-off events. For 22100/22100 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1745 event pairs, 38 based on Foata normal form. 10/422 useless extension candidates. Maximal degree in co-relation 1952. Up to 266 conditions per place. [2024-06-04 14:45:37,215 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 19 changer transitions 17/104 dead transitions. [2024-06-04 14:45:37,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 861 flow [2024-06-04 14:45:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:45:37,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-04 14:45:37,217 INFO L175 Difference]: Start difference. First operand has 135 places, 85 transitions, 583 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:45:37,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 861 flow [2024-06-04 14:45:37,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 104 transitions, 801 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:45:37,243 INFO L231 Difference]: Finished difference. Result has 128 places, 79 transitions, 530 flow [2024-06-04 14:45:37,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=530, PETRI_PLACES=128, PETRI_TRANSITIONS=79} [2024-06-04 14:45:37,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-04 14:45:37,244 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 79 transitions, 530 flow [2024-06-04 14:45:37,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:37,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:37,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:45:37,244 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)] === [2024-06-04 14:45:37,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:37,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1988555235, now seen corresponding path program 17 times [2024-06-04 14:45:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629750965] [2024-06-04 14:45:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:38,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629750965] [2024-06-04 14:45:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629750965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:38,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:38,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714786563] [2024-06-04 14:45:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:38,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:38,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 79 transitions, 530 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:38,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:38,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:38,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:38,541 INFO L124 PetriNetUnfolderBase]: 198/393 cut-off events. [2024-06-04 14:45:38,542 INFO L125 PetriNetUnfolderBase]: For 19245/19245 co-relation queries the response was YES. [2024-06-04 14:45:38,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 393 events. 198/393 cut-off events. For 19245/19245 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1611 event pairs, 34 based on Foata normal form. 10/401 useless extension candidates. Maximal degree in co-relation 1812. Up to 285 conditions per place. [2024-06-04 14:45:38,544 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 20 changer transitions 11/99 dead transitions. [2024-06-04 14:45:38,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 99 transitions, 798 flow [2024-06-04 14:45:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:45:38,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-04 14:45:38,545 INFO L175 Difference]: Start difference. First operand has 128 places, 79 transitions, 530 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:45:38,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 99 transitions, 798 flow [2024-06-04 14:45:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 99 transitions, 742 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:38,571 INFO L231 Difference]: Finished difference. Result has 118 places, 76 transitions, 505 flow [2024-06-04 14:45:38,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=505, PETRI_PLACES=118, PETRI_TRANSITIONS=76} [2024-06-04 14:45:38,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-04 14:45:38,571 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 76 transitions, 505 flow [2024-06-04 14:45:38,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:38,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:38,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:45:38,572 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)] === [2024-06-04 14:45:38,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1649664599, now seen corresponding path program 18 times [2024-06-04 14:45:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:38,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657494056] [2024-06-04 14:45:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657494056] [2024-06-04 14:45:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657494056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:39,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002396849] [2024-06-04 14:45:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:39,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:39,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 76 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:39,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:39,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:39,841 INFO L124 PetriNetUnfolderBase]: 215/432 cut-off events. [2024-06-04 14:45:39,841 INFO L125 PetriNetUnfolderBase]: For 21411/21411 co-relation queries the response was YES. [2024-06-04 14:45:39,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 432 events. 215/432 cut-off events. For 21411/21411 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1812 event pairs, 43 based on Foata normal form. 8/438 useless extension candidates. Maximal degree in co-relation 2252. Up to 269 conditions per place. [2024-06-04 14:45:39,843 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 17 changer transitions 9/100 dead transitions. [2024-06-04 14:45:39,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 100 transitions, 871 flow [2024-06-04 14:45:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:45:39,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 14:45:39,844 INFO L175 Difference]: Start difference. First operand has 118 places, 76 transitions, 505 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:45:39,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 100 transitions, 871 flow [2024-06-04 14:45:39,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 100 transitions, 813 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:39,860 INFO L231 Difference]: Finished difference. Result has 116 places, 72 transitions, 470 flow [2024-06-04 14:45:39,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=470, PETRI_PLACES=116, PETRI_TRANSITIONS=72} [2024-06-04 14:45:39,860 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-04 14:45:39,860 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 72 transitions, 470 flow [2024-06-04 14:45:39,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:39,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:39,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:45:39,861 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)] === [2024-06-04 14:45:39,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash 228214955, now seen corresponding path program 19 times [2024-06-04 14:45:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300107050] [2024-06-04 14:45:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300107050] [2024-06-04 14:45:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300107050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029153319] [2024-06-04 14:45:40,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:40,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:40,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:40,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:40,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 72 transitions, 470 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:40,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:40,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:40,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:41,203 INFO L124 PetriNetUnfolderBase]: 211/424 cut-off events. [2024-06-04 14:45:41,203 INFO L125 PetriNetUnfolderBase]: For 21779/21779 co-relation queries the response was YES. [2024-06-04 14:45:41,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 424 events. 211/424 cut-off events. For 21779/21779 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1790 event pairs, 47 based on Foata normal form. 10/432 useless extension candidates. Maximal degree in co-relation 2178. Up to 306 conditions per place. [2024-06-04 14:45:41,206 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 21 changer transitions 11/91 dead transitions. [2024-06-04 14:45:41,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 91 transitions, 712 flow [2024-06-04 14:45:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:45:41,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 14:45:41,207 INFO L175 Difference]: Start difference. First operand has 116 places, 72 transitions, 470 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:45:41,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 91 transitions, 712 flow [2024-06-04 14:45:41,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 91 transitions, 672 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:45:41,231 INFO L231 Difference]: Finished difference. Result has 111 places, 69 transitions, 459 flow [2024-06-04 14:45:41,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=459, PETRI_PLACES=111, PETRI_TRANSITIONS=69} [2024-06-04 14:45:41,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-04 14:45:41,232 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 69 transitions, 459 flow [2024-06-04 14:45:41,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:41,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:41,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:41,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:45:41,233 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)] === [2024-06-04 14:45:41,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash 228210305, now seen corresponding path program 20 times [2024-06-04 14:45:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:41,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449956090] [2024-06-04 14:45:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449956090] [2024-06-04 14:45:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449956090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:42,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:42,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538728840] [2024-06-04 14:45:42,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:42,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:42,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 69 transitions, 459 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:42,638 INFO L124 PetriNetUnfolderBase]: 199/404 cut-off events. [2024-06-04 14:45:42,638 INFO L125 PetriNetUnfolderBase]: For 17227/17227 co-relation queries the response was YES. [2024-06-04 14:45:42,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 404 events. 199/404 cut-off events. For 17227/17227 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1689 event pairs, 55 based on Foata normal form. 8/410 useless extension candidates. Maximal degree in co-relation 2046. Up to 318 conditions per place. [2024-06-04 14:45:42,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 14 changer transitions 13/86 dead transitions. [2024-06-04 14:45:42,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 86 transitions, 677 flow [2024-06-04 14:45:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:45:42,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-04 14:45:42,641 INFO L175 Difference]: Start difference. First operand has 111 places, 69 transitions, 459 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:45:42,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 86 transitions, 677 flow [2024-06-04 14:45:42,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 86 transitions, 631 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:42,654 INFO L231 Difference]: Finished difference. Result has 109 places, 65 transitions, 420 flow [2024-06-04 14:45:42,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=420, PETRI_PLACES=109, PETRI_TRANSITIONS=65} [2024-06-04 14:45:42,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-04 14:45:42,654 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 65 transitions, 420 flow [2024-06-04 14:45:42,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:42,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:42,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:42,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:45:42,655 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)] === [2024-06-04 14:45:42,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 204563053, now seen corresponding path program 2 times [2024-06-04 14:45:42,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:42,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557589549] [2024-06-04 14:45:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557589549] [2024-06-04 14:45:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557589549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502286122] [2024-06-04 14:45:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:43,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:43,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 65 transitions, 420 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:43,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:43,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:43,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:44,083 INFO L124 PetriNetUnfolderBase]: 189/378 cut-off events. [2024-06-04 14:45:44,083 INFO L125 PetriNetUnfolderBase]: For 13066/13066 co-relation queries the response was YES. [2024-06-04 14:45:44,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 378 events. 189/378 cut-off events. For 13066/13066 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1519 event pairs, 45 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 1940. Up to 323 conditions per place. [2024-06-04 14:45:44,085 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 65 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-06-04 14:45:44,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 655 flow [2024-06-04 14:45:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:45:44,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-04 14:45:44,085 INFO L175 Difference]: Start difference. First operand has 109 places, 65 transitions, 420 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:45:44,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 655 flow [2024-06-04 14:45:44,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 85 transitions, 617 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:44,097 INFO L231 Difference]: Finished difference. Result has 105 places, 71 transitions, 480 flow [2024-06-04 14:45:44,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=480, PETRI_PLACES=105, PETRI_TRANSITIONS=71} [2024-06-04 14:45:44,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-04 14:45:44,098 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 71 transitions, 480 flow [2024-06-04 14:45:44,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:44,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:44,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:44,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:45:44,098 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)] === [2024-06-04 14:45:44,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash -138636529, now seen corresponding path program 3 times [2024-06-04 14:45:44,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:44,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731077918] [2024-06-04 14:45:44,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:44,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:44,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731077918] [2024-06-04 14:45:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731077918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:44,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:44,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977991194] [2024-06-04 14:45:44,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:44,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:44,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:44,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:45,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:45,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 71 transitions, 480 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:45,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:45,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:45,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:45,299 INFO L124 PetriNetUnfolderBase]: 193/386 cut-off events. [2024-06-04 14:45:45,300 INFO L125 PetriNetUnfolderBase]: For 10946/10946 co-relation queries the response was YES. [2024-06-04 14:45:45,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 386 events. 193/386 cut-off events. For 10946/10946 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1563 event pairs, 53 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 1971. Up to 343 conditions per place. [2024-06-04 14:45:45,302 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-04 14:45:45,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 84 transitions, 682 flow [2024-06-04 14:45:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-04 14:45:45,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-04 14:45:45,303 INFO L175 Difference]: Start difference. First operand has 105 places, 71 transitions, 480 flow. Second operand 10 states and 105 transitions. [2024-06-04 14:45:45,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 84 transitions, 682 flow [2024-06-04 14:45:45,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 84 transitions, 650 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:45:45,318 INFO L231 Difference]: Finished difference. Result has 108 places, 72 transitions, 496 flow [2024-06-04 14:45:45,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=496, PETRI_PLACES=108, PETRI_TRANSITIONS=72} [2024-06-04 14:45:45,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-04 14:45:45,319 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 72 transitions, 496 flow [2024-06-04 14:45:45,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:45,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:45,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:45,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:45:45,320 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)] === [2024-06-04 14:45:45,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:45,320 INFO L85 PathProgramCache]: Analyzing trace with hash -60810121, now seen corresponding path program 4 times [2024-06-04 14:45:45,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48849937] [2024-06-04 14:45:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:45,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48849937] [2024-06-04 14:45:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48849937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:46,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:46,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:46,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823002401] [2024-06-04 14:45:46,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:46,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:46,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:46,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 72 transitions, 496 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:46,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:46,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:46,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:46,559 INFO L124 PetriNetUnfolderBase]: 197/394 cut-off events. [2024-06-04 14:45:46,559 INFO L125 PetriNetUnfolderBase]: For 11777/11777 co-relation queries the response was YES. [2024-06-04 14:45:46,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 394 events. 197/394 cut-off events. For 11777/11777 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1623 event pairs, 55 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 2032. Up to 338 conditions per place. [2024-06-04 14:45:46,561 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-04 14:45:46,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 86 transitions, 710 flow [2024-06-04 14:45:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:45:46,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 14:45:46,562 INFO L175 Difference]: Start difference. First operand has 108 places, 72 transitions, 496 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:45:46,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 86 transitions, 710 flow [2024-06-04 14:45:46,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 86 transitions, 672 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:46,574 INFO L231 Difference]: Finished difference. Result has 110 places, 73 transitions, 512 flow [2024-06-04 14:45:46,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=512, PETRI_PLACES=110, PETRI_TRANSITIONS=73} [2024-06-04 14:45:46,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-04 14:45:46,574 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 73 transitions, 512 flow [2024-06-04 14:45:46,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:46,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:46,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:46,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:45:46,574 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)] === [2024-06-04 14:45:46,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash 426199723, now seen corresponding path program 5 times [2024-06-04 14:45:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281201781] [2024-06-04 14:45:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:47,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:47,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281201781] [2024-06-04 14:45:47,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281201781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:47,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:47,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662666846] [2024-06-04 14:45:47,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:47,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:47,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:47,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 73 transitions, 512 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:47,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:47,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:47,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:47,915 INFO L124 PetriNetUnfolderBase]: 201/402 cut-off events. [2024-06-04 14:45:47,915 INFO L125 PetriNetUnfolderBase]: For 12615/12615 co-relation queries the response was YES. [2024-06-04 14:45:47,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 402 events. 201/402 cut-off events. For 12615/12615 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1668 event pairs, 55 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 2094. Up to 353 conditions per place. [2024-06-04 14:45:47,917 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2024-06-04 14:45:47,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 86 transitions, 726 flow [2024-06-04 14:45:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:45:47,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-04 14:45:47,918 INFO L175 Difference]: Start difference. First operand has 110 places, 73 transitions, 512 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:45:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 86 transitions, 726 flow [2024-06-04 14:45:47,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 86 transitions, 682 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:47,929 INFO L231 Difference]: Finished difference. Result has 112 places, 74 transitions, 531 flow [2024-06-04 14:45:47,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=531, PETRI_PLACES=112, PETRI_TRANSITIONS=74} [2024-06-04 14:45:47,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-04 14:45:47,930 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 74 transitions, 531 flow [2024-06-04 14:45:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:47,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:47,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:47,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:45:47,930 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)] === [2024-06-04 14:45:47,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:47,930 INFO L85 PathProgramCache]: Analyzing trace with hash 426208093, now seen corresponding path program 6 times [2024-06-04 14:45:47,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:47,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467181122] [2024-06-04 14:45:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:47,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:49,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:49,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467181122] [2024-06-04 14:45:49,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467181122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:49,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720161210] [2024-06-04 14:45:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:49,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:49,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 74 transitions, 531 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:49,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:49,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:49,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:49,532 INFO L124 PetriNetUnfolderBase]: 198/397 cut-off events. [2024-06-04 14:45:49,532 INFO L125 PetriNetUnfolderBase]: For 12262/12262 co-relation queries the response was YES. [2024-06-04 14:45:49,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 397 events. 198/397 cut-off events. For 12262/12262 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1647 event pairs, 48 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 2024. Up to 332 conditions per place. [2024-06-04 14:45:49,534 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2024-06-04 14:45:49,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 86 transitions, 727 flow [2024-06-04 14:45:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:45:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:45:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:45:49,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-04 14:45:49,535 INFO L175 Difference]: Start difference. First operand has 112 places, 74 transitions, 531 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:45:49,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 86 transitions, 727 flow [2024-06-04 14:45:49,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 86 transitions, 674 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:49,550 INFO L231 Difference]: Finished difference. Result has 114 places, 74 transitions, 524 flow [2024-06-04 14:45:49,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=524, PETRI_PLACES=114, PETRI_TRANSITIONS=74} [2024-06-04 14:45:49,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-04 14:45:49,551 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 74 transitions, 524 flow [2024-06-04 14:45:49,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:49,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:49,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:49,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:45:49,552 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)] === [2024-06-04 14:45:49,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash -434101683, now seen corresponding path program 21 times [2024-06-04 14:45:49,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:49,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060751314] [2024-06-04 14:45:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:49,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:50,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:50,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060751314] [2024-06-04 14:45:50,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060751314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:50,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:50,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:50,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851263793] [2024-06-04 14:45:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:50,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:50,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:50,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:50,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:50,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 74 transitions, 524 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:50,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:50,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:50,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:50,956 INFO L124 PetriNetUnfolderBase]: 185/374 cut-off events. [2024-06-04 14:45:50,957 INFO L125 PetriNetUnfolderBase]: For 11739/11739 co-relation queries the response was YES. [2024-06-04 14:45:50,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 374 events. 185/374 cut-off events. For 11739/11739 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1534 event pairs, 39 based on Foata normal form. 10/382 useless extension candidates. Maximal degree in co-relation 1612. Up to 281 conditions per place. [2024-06-04 14:45:50,959 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 61 selfloop transitions, 17 changer transitions 12/92 dead transitions. [2024-06-04 14:45:50,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 92 transitions, 772 flow [2024-06-04 14:45:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:45:50,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-04 14:45:50,961 INFO L175 Difference]: Start difference. First operand has 114 places, 74 transitions, 524 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:45:50,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 92 transitions, 772 flow [2024-06-04 14:45:50,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 92 transitions, 701 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:45:50,979 INFO L231 Difference]: Finished difference. Result has 116 places, 70 transitions, 463 flow [2024-06-04 14:45:50,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=463, PETRI_PLACES=116, PETRI_TRANSITIONS=70} [2024-06-04 14:45:50,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-04 14:45:50,980 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 70 transitions, 463 flow [2024-06-04 14:45:50,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:50,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:50,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:50,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:45:50,981 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)] === [2024-06-04 14:45:50,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash 889450365, now seen corresponding path program 22 times [2024-06-04 14:45:50,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:50,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678469595] [2024-06-04 14:45:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:50,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:52,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678469595] [2024-06-04 14:45:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678469595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:52,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:52,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:52,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117600444] [2024-06-04 14:45:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:52,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:52,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 70 transitions, 463 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:52,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:52,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:52,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:52,564 INFO L124 PetriNetUnfolderBase]: 204/419 cut-off events. [2024-06-04 14:45:52,564 INFO L125 PetriNetUnfolderBase]: For 17158/17158 co-relation queries the response was YES. [2024-06-04 14:45:52,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 419 events. 204/419 cut-off events. For 17158/17158 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1796 event pairs, 46 based on Foata normal form. 8/425 useless extension candidates. Maximal degree in co-relation 2030. Up to 227 conditions per place. [2024-06-04 14:45:52,566 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 27 changer transitions 7/96 dead transitions. [2024-06-04 14:45:52,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 96 transitions, 829 flow [2024-06-04 14:45:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:45:52,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-04 14:45:52,568 INFO L175 Difference]: Start difference. First operand has 116 places, 70 transitions, 463 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:45:52,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 96 transitions, 829 flow [2024-06-04 14:45:52,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 96 transitions, 778 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:52,592 INFO L231 Difference]: Finished difference. Result has 113 places, 70 transitions, 474 flow [2024-06-04 14:45:52,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=113, PETRI_TRANSITIONS=70} [2024-06-04 14:45:52,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-04 14:45:52,593 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 70 transitions, 474 flow [2024-06-04 14:45:52,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:52,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:52,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:45:52,594 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)] === [2024-06-04 14:45:52,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 893923665, now seen corresponding path program 23 times [2024-06-04 14:45:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237170407] [2024-06-04 14:45:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237170407] [2024-06-04 14:45:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237170407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:53,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:53,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862912955] [2024-06-04 14:45:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:53,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:53,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 70 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:53,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:53,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:53,892 INFO L124 PetriNetUnfolderBase]: 202/417 cut-off events. [2024-06-04 14:45:53,892 INFO L125 PetriNetUnfolderBase]: For 18323/18323 co-relation queries the response was YES. [2024-06-04 14:45:53,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 417 events. 202/417 cut-off events. For 18323/18323 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1796 event pairs, 58 based on Foata normal form. 10/425 useless extension candidates. Maximal degree in co-relation 2028. Up to 298 conditions per place. [2024-06-04 14:45:53,895 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 53 selfloop transitions, 22 changer transitions 11/88 dead transitions. [2024-06-04 14:45:53,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 88 transitions, 712 flow [2024-06-04 14:45:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:45:53,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-04 14:45:53,896 INFO L175 Difference]: Start difference. First operand has 113 places, 70 transitions, 474 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:45:53,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 88 transitions, 712 flow [2024-06-04 14:45:53,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 88 transitions, 666 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:53,913 INFO L231 Difference]: Finished difference. Result has 114 places, 67 transitions, 456 flow [2024-06-04 14:45:53,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=456, PETRI_PLACES=114, PETRI_TRANSITIONS=67} [2024-06-04 14:45:53,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-04 14:45:53,914 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 67 transitions, 456 flow [2024-06-04 14:45:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:53,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:53,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:53,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:45:53,914 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)] === [2024-06-04 14:45:53,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 893919015, now seen corresponding path program 24 times [2024-06-04 14:45:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:53,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346586750] [2024-06-04 14:45:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:53,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:54,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346586750] [2024-06-04 14:45:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346586750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:54,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:54,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:54,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586178911] [2024-06-04 14:45:54,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:54,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:54,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:54,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 67 transitions, 456 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:54,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:54,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:54,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:55,265 INFO L124 PetriNetUnfolderBase]: 190/397 cut-off events. [2024-06-04 14:45:55,266 INFO L125 PetriNetUnfolderBase]: For 16087/16087 co-relation queries the response was YES. [2024-06-04 14:45:55,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 397 events. 190/397 cut-off events. For 16087/16087 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1697 event pairs, 56 based on Foata normal form. 8/403 useless extension candidates. Maximal degree in co-relation 1930. Up to 314 conditions per place. [2024-06-04 14:45:55,268 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 12 changer transitions 13/83 dead transitions. [2024-06-04 14:45:55,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 83 transitions, 668 flow [2024-06-04 14:45:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:45:55,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-04 14:45:55,270 INFO L175 Difference]: Start difference. First operand has 114 places, 67 transitions, 456 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:45:55,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 83 transitions, 668 flow [2024-06-04 14:45:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 83 transitions, 614 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 14:45:55,292 INFO L231 Difference]: Finished difference. Result has 112 places, 63 transitions, 406 flow [2024-06-04 14:45:55,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=406, PETRI_PLACES=112, PETRI_TRANSITIONS=63} [2024-06-04 14:45:55,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-04 14:45:55,292 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 63 transitions, 406 flow [2024-06-04 14:45:55,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:55,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:55,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:55,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:45:55,293 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)] === [2024-06-04 14:45:55,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash 57392555, now seen corresponding path program 25 times [2024-06-04 14:45:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:55,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538448102] [2024-06-04 14:45:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:55,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:56,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:56,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538448102] [2024-06-04 14:45:56,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538448102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:56,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:56,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:56,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448531164] [2024-06-04 14:45:56,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:56,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:56,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:56,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:56,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 63 transitions, 406 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:56,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:56,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:56,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:56,885 INFO L124 PetriNetUnfolderBase]: 168/355 cut-off events. [2024-06-04 14:45:56,886 INFO L125 PetriNetUnfolderBase]: For 13678/13678 co-relation queries the response was YES. [2024-06-04 14:45:56,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 355 events. 168/355 cut-off events. For 13678/13678 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1451 event pairs, 40 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 1618. Up to 193 conditions per place. [2024-06-04 14:45:56,888 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 59 selfloop transitions, 14 changer transitions 10/85 dead transitions. [2024-06-04 14:45:56,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 85 transitions, 714 flow [2024-06-04 14:45:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:45:56,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-04 14:45:56,889 INFO L175 Difference]: Start difference. First operand has 112 places, 63 transitions, 406 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:45:56,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 85 transitions, 714 flow [2024-06-04 14:45:56,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 85 transitions, 670 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:56,899 INFO L231 Difference]: Finished difference. Result has 106 places, 60 transitions, 388 flow [2024-06-04 14:45:56,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=388, PETRI_PLACES=106, PETRI_TRANSITIONS=60} [2024-06-04 14:45:56,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-04 14:45:56,899 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 60 transitions, 388 flow [2024-06-04 14:45:56,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:56,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:56,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:56,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:45:56,900 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)] === [2024-06-04 14:45:56,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 57512525, now seen corresponding path program 26 times [2024-06-04 14:45:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:56,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64952164] [2024-06-04 14:45:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64952164] [2024-06-04 14:45:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64952164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:58,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040432111] [2024-06-04 14:45:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:58,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:58,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:45:58,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 60 transitions, 388 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:58,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:58,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:45:58,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:58,574 INFO L124 PetriNetUnfolderBase]: 133/286 cut-off events. [2024-06-04 14:45:58,574 INFO L125 PetriNetUnfolderBase]: For 7678/7678 co-relation queries the response was YES. [2024-06-04 14:45:58,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 286 events. 133/286 cut-off events. For 7678/7678 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1091 event pairs, 31 based on Foata normal form. 10/294 useless extension candidates. Maximal degree in co-relation 1054. Up to 193 conditions per place. [2024-06-04 14:45:58,575 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 47 selfloop transitions, 10 changer transitions 17/76 dead transitions. [2024-06-04 14:45:58,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 76 transitions, 582 flow [2024-06-04 14:45:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 14:45:58,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-04 14:45:58,576 INFO L175 Difference]: Start difference. First operand has 106 places, 60 transitions, 388 flow. Second operand 11 states and 119 transitions. [2024-06-04 14:45:58,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 76 transitions, 582 flow [2024-06-04 14:45:58,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 76 transitions, 548 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:58,581 INFO L231 Difference]: Finished difference. Result has 103 places, 53 transitions, 331 flow [2024-06-04 14:45:58,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=331, PETRI_PLACES=103, PETRI_TRANSITIONS=53} [2024-06-04 14:45:58,582 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-04 14:45:58,582 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 53 transitions, 331 flow [2024-06-04 14:45:58,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:58,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:58,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:58,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:45:58,582 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)] === [2024-06-04 14:45:58,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1674646482, now seen corresponding path program 1 times [2024-06-04 14:45:58,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997405653] [2024-06-04 14:45:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:59,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:59,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997405653] [2024-06-04 14:45:59,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997405653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:59,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:59,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725080323] [2024-06-04 14:45:59,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:00,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:46:00,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 53 transitions, 331 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:00,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:00,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:46:00,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:00,250 INFO L124 PetriNetUnfolderBase]: 114/249 cut-off events. [2024-06-04 14:46:00,250 INFO L125 PetriNetUnfolderBase]: For 5039/5039 co-relation queries the response was YES. [2024-06-04 14:46:00,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 249 events. 114/249 cut-off events. For 5039/5039 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 903 event pairs, 25 based on Foata normal form. 6/253 useless extension candidates. Maximal degree in co-relation 896. Up to 154 conditions per place. [2024-06-04 14:46:00,251 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 8 changer transitions 23/71 dead transitions. [2024-06-04 14:46:00,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 71 transitions, 517 flow [2024-06-04 14:46:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:46:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:46:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 14:46:00,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-04 14:46:00,253 INFO L175 Difference]: Start difference. First operand has 103 places, 53 transitions, 331 flow. Second operand 12 states and 123 transitions. [2024-06-04 14:46:00,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 71 transitions, 517 flow [2024-06-04 14:46:00,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 71 transitions, 464 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-04 14:46:00,258 INFO L231 Difference]: Finished difference. Result has 92 places, 44 transitions, 260 flow [2024-06-04 14:46:00,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=260, PETRI_PLACES=92, PETRI_TRANSITIONS=44} [2024-06-04 14:46:00,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-04 14:46:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 44 transitions, 260 flow [2024-06-04 14:46:00,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:00,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:00,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:00,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:46:00,259 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)] === [2024-06-04 14:46:00,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:00,259 INFO L85 PathProgramCache]: Analyzing trace with hash -564883900, now seen corresponding path program 2 times [2024-06-04 14:46:00,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:00,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595374457] [2024-06-04 14:46:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:00,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:01,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595374457] [2024-06-04 14:46:01,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595374457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:01,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:01,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361547085] [2024-06-04 14:46:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:01,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:01,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:46:01,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 44 transitions, 260 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:01,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:01,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:46:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:01,892 INFO L124 PetriNetUnfolderBase]: 96/210 cut-off events. [2024-06-04 14:46:01,892 INFO L125 PetriNetUnfolderBase]: For 3804/3804 co-relation queries the response was YES. [2024-06-04 14:46:01,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 210 events. 96/210 cut-off events. For 3804/3804 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 715 event pairs, 23 based on Foata normal form. 6/215 useless extension candidates. Maximal degree in co-relation 712. Up to 137 conditions per place. [2024-06-04 14:46:01,893 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 12 changer transitions 12/58 dead transitions. [2024-06-04 14:46:01,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 58 transitions, 406 flow [2024-06-04 14:46:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:46:01,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-04 14:46:01,894 INFO L175 Difference]: Start difference. First operand has 92 places, 44 transitions, 260 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:46:01,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 58 transitions, 406 flow [2024-06-04 14:46:01,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 58 transitions, 372 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-04 14:46:01,898 INFO L231 Difference]: Finished difference. Result has 77 places, 40 transitions, 229 flow [2024-06-04 14:46:01,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=229, PETRI_PLACES=77, PETRI_TRANSITIONS=40} [2024-06-04 14:46:01,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-04 14:46:01,898 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 40 transitions, 229 flow [2024-06-04 14:46:01,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:01,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:01,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:46:01,899 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)] === [2024-06-04 14:46:01,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2046488628, now seen corresponding path program 3 times [2024-06-04 14:46:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:01,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410730690] [2024-06-04 14:46:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410730690] [2024-06-04 14:46:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410730690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244480425] [2024-06-04 14:46:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:03,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:03,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:46:03,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 40 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:03,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:03,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:46:03,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:03,588 INFO L124 PetriNetUnfolderBase]: 83/187 cut-off events. [2024-06-04 14:46:03,589 INFO L125 PetriNetUnfolderBase]: For 2444/2444 co-relation queries the response was YES. [2024-06-04 14:46:03,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 187 events. 83/187 cut-off events. For 2444/2444 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 617 event pairs, 21 based on Foata normal form. 6/192 useless extension candidates. Maximal degree in co-relation 618. Up to 116 conditions per place. [2024-06-04 14:46:03,589 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 30 selfloop transitions, 8 changer transitions 15/55 dead transitions. [2024-06-04 14:46:03,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 55 transitions, 371 flow [2024-06-04 14:46:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-04 14:46:03,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-04 14:46:03,590 INFO L175 Difference]: Start difference. First operand has 77 places, 40 transitions, 229 flow. Second operand 11 states and 112 transitions. [2024-06-04 14:46:03,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 55 transitions, 371 flow [2024-06-04 14:46:03,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 55 transitions, 341 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:03,593 INFO L231 Difference]: Finished difference. Result has 73 places, 35 transitions, 190 flow [2024-06-04 14:46:03,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=190, PETRI_PLACES=73, PETRI_TRANSITIONS=35} [2024-06-04 14:46:03,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-04 14:46:03,594 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 35 transitions, 190 flow [2024-06-04 14:46:03,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:03,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:03,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:46:03,595 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)] === [2024-06-04 14:46:03,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:03,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1287929928, now seen corresponding path program 4 times [2024-06-04 14:46:03,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:03,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141937703] [2024-06-04 14:46:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:03,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:04,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:04,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141937703] [2024-06-04 14:46:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141937703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:04,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790783361] [2024-06-04 14:46:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:04,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:04,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:05,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:46:05,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 35 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:05,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:05,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:46:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:05,283 INFO L124 PetriNetUnfolderBase]: 70/160 cut-off events. [2024-06-04 14:46:05,283 INFO L125 PetriNetUnfolderBase]: For 1982/1982 co-relation queries the response was YES. [2024-06-04 14:46:05,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 160 events. 70/160 cut-off events. For 1982/1982 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 475 event pairs, 19 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 520. Up to 86 conditions per place. [2024-06-04 14:46:05,284 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 24 selfloop transitions, 6 changer transitions 17/49 dead transitions. [2024-06-04 14:46:05,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 49 transitions, 316 flow [2024-06-04 14:46:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-04 14:46:05,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-04 14:46:05,285 INFO L175 Difference]: Start difference. First operand has 73 places, 35 transitions, 190 flow. Second operand 11 states and 109 transitions. [2024-06-04 14:46:05,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 49 transitions, 316 flow [2024-06-04 14:46:05,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 49 transitions, 292 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:05,287 INFO L231 Difference]: Finished difference. Result has 66 places, 29 transitions, 155 flow [2024-06-04 14:46:05,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=155, PETRI_PLACES=66, PETRI_TRANSITIONS=29} [2024-06-04 14:46:05,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-04 14:46:05,287 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 29 transitions, 155 flow [2024-06-04 14:46:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:05,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:05,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:05,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:46:05,288 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)] === [2024-06-04 14:46:05,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1662520870, now seen corresponding path program 5 times [2024-06-04 14:46:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:05,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489021620] [2024-06-04 14:46:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489021620] [2024-06-04 14:46:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489021620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:06,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:06,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209158318] [2024-06-04 14:46:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:06,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:06,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:46:06,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 29 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:46:06,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:06,686 INFO L124 PetriNetUnfolderBase]: 56/130 cut-off events. [2024-06-04 14:46:06,686 INFO L125 PetriNetUnfolderBase]: For 1388/1388 co-relation queries the response was YES. [2024-06-04 14:46:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 130 events. 56/130 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 342 event pairs, 17 based on Foata normal form. 6/135 useless extension candidates. Maximal degree in co-relation 418. Up to 60 conditions per place. [2024-06-04 14:46:06,687 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 16/42 dead transitions. [2024-06-04 14:46:06,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 42 transitions, 263 flow [2024-06-04 14:46:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-04 14:46:06,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-04 14:46:06,688 INFO L175 Difference]: Start difference. First operand has 66 places, 29 transitions, 155 flow. Second operand 11 states and 105 transitions. [2024-06-04 14:46:06,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 42 transitions, 263 flow [2024-06-04 14:46:06,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 241 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:06,689 INFO L231 Difference]: Finished difference. Result has 57 places, 22 transitions, 104 flow [2024-06-04 14:46:06,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=22} [2024-06-04 14:46:06,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-04 14:46:06,689 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 22 transitions, 104 flow [2024-06-04 14:46:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:06,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:06,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:06,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:46:06,690 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)] === [2024-06-04 14:46:06,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2763822, now seen corresponding path program 6 times [2024-06-04 14:46:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:06,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602433234] [2024-06-04 14:46:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:07,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602433234] [2024-06-04 14:46:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602433234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:07,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:07,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:46:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256494856] [2024-06-04 14:46:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:07,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:46:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:46:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:46:07,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-04 14:46:07,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 22 transitions, 104 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:07,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:07,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-04 14:46:07,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:07,967 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-04 14:46:07,967 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-04 14:46:07,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 68 events. 26/68 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 178. Up to 24 conditions per place. [2024-06-04 14:46:07,967 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-04 14:46:07,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 31 transitions, 158 flow [2024-06-04 14:46:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-04 14:46:07,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-04 14:46:07,968 INFO L175 Difference]: Start difference. First operand has 57 places, 22 transitions, 104 flow. Second operand 11 states and 96 transitions. [2024-06-04 14:46:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 31 transitions, 158 flow [2024-06-04 14:46:07,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-04 14:46:07,968 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-04 14:46:07,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-04 14:46:07,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-04 14:46:07,969 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-04 14:46:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:07,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:46:07,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:46:07,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:46:07,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:46:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:46:07,977 INFO L445 BasicCegarLoop]: Path program histogram: [26, 13, 11, 8, 6, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:07,980 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:46:07,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:46:07,984 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:46:07,984 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:46:07,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:46:07 BasicIcfg [2024-06-04 14:46:07,985 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:46:07,985 INFO L158 Benchmark]: Toolchain (without parser) took 142426.44ms. Allocated memory was 146.8MB in the beginning and 859.8MB in the end (delta: 713.0MB). Free memory was 86.3MB in the beginning and 795.7MB in the end (delta: -709.4MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-06-04 14:46:07,986 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 146.8MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:46:07,986 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:46:07,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.13ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 86.3MB in the beginning and 169.2MB in the end (delta: -82.9MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2024-06-04 14:46:07,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.57ms. Allocated memory is still 211.8MB. Free memory was 169.2MB in the beginning and 167.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:46:07,987 INFO L158 Benchmark]: Boogie Preprocessor took 64.72ms. Allocated memory is still 211.8MB. Free memory was 167.1MB in the beginning and 164.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:46:07,987 INFO L158 Benchmark]: RCFGBuilder took 615.36ms. Allocated memory is still 211.8MB. Free memory was 162.9MB in the beginning and 112.6MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-04 14:46:07,987 INFO L158 Benchmark]: TraceAbstraction took 140964.10ms. Allocated memory was 211.8MB in the beginning and 859.8MB in the end (delta: 648.0MB). Free memory was 111.6MB in the beginning and 795.7MB in the end (delta: -684.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:46:07,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 146.8MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.13ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 86.3MB in the beginning and 169.2MB in the end (delta: -82.9MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.57ms. Allocated memory is still 211.8MB. Free memory was 169.2MB in the beginning and 167.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.72ms. Allocated memory is still 211.8MB. Free memory was 167.1MB in the beginning and 164.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 615.36ms. Allocated memory is still 211.8MB. Free memory was 162.9MB in the beginning and 112.6MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 140964.10ms. Allocated memory was 211.8MB in the beginning and 859.8MB in the end (delta: 648.0MB). Free memory was 111.6MB in the beginning and 795.7MB in the end (delta: -684.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 815]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 140.8s, OverallIterations: 105, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 44.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6618 SdHoareTripleChecker+Valid, 25.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5670 mSDsluCounter, 1688 SdHoareTripleChecker+Invalid, 22.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1410 mSDsCounter, 1552 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41011 IncrementalHoareTripleChecker+Invalid, 42563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1552 mSolverCounterUnsat, 278 mSDtfsCounter, 41011 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 34.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1378occurred in iteration=48, InterpolantAutomatonStates: 1008, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 94.9s InterpolantComputationTime, 1724 NumberOfCodeBlocks, 1724 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 1619 ConstructedInterpolants, 0 QuantifiedInterpolants, 70885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 105 InterpolantComputations, 105 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:46:08,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE