./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:43:30,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:43:30,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:43:30,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:43:30,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:43:30,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:43:30,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:43:30,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:43:30,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:43:30,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:43:30,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:43:30,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:43:30,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:43:30,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:43:30,419 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:43:30,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:43:30,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:43:30,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:43:30,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:43:30,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:43:30,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:43:30,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:43:30,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:43:30,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:43:30,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:43:30,421 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:43:30,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:43:30,421 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:43:30,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:43:30,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:43:30,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:43:30,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:43:30,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:43:30,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:43:30,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:43:30,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:43:30,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:43:30,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:43:30,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:43:30,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:43:30,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:43:30,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:43:30,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:43:30,431 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:43:30,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:43:30,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:43:30,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:43:30,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:43:30,703 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:43:30,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-28 03:43:31,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:43:31,906 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:43:31,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-28 03:43:31,920 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5e81963/0ef6f88bf5fb4052b3d1e95a4dda13d7/FLAGb73c9a1b5 [2024-06-28 03:43:31,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5e81963/0ef6f88bf5fb4052b3d1e95a4dda13d7 [2024-06-28 03:43:31,932 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:43:31,932 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:43:31,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi007_tso.yml/witness.yml [2024-06-28 03:43:32,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:43:32,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:43:32,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:43:32,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:43:32,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:43:32,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:43:31" (1/2) ... [2024-06-28 03:43:32,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d927a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:43:32, skipping insertion in model container [2024-06-28 03:43:32,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:43:31" (1/2) ... [2024-06-28 03:43:32,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5baffe38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:43:32, skipping insertion in model container [2024-06-28 03:43:32,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:43:32" (2/2) ... [2024-06-28 03:43:32,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d927a2b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32, skipping insertion in model container [2024-06-28 03:43:32,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:43:32" (2/2) ... [2024-06-28 03:43:32,070 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:43:32,116 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:43:32,117 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:43:32,118 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:43:32,118 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:43:32,118 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 03:43:32,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:43:32,456 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:43:32,462 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:43:32,560 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:43:32,585 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:43:32,586 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32 WrapperNode [2024-06-28 03:43:32,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:43:32,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:43:32,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:43:32,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:43:32,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,666 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-28 03:43:32,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:43:32,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:43:32,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:43:32,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:43:32,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,775 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:43:32,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:43:32,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:43:32,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:43:32,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:43:32,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (1/1) ... [2024-06-28 03:43:32,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:43:32,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:43:32,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:43:32,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:43:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:43:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:43:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:43:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:43:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:43:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:43:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:43:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:43:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:43:32,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:43:32,858 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:43:32,953 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:43:32,955 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:43:33,186 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:43:33,187 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:43:33,304 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:43:33,304 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:43:33,306 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:43:33 BoogieIcfgContainer [2024-06-28 03:43:33,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:43:33,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:43:33,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:43:33,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:43:33,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:43:31" (1/4) ... [2024-06-28 03:43:33,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b836af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:43:33, skipping insertion in model container [2024-06-28 03:43:33,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:43:32" (2/4) ... [2024-06-28 03:43:33,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b836af0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:43:33, skipping insertion in model container [2024-06-28 03:43:33,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:43:32" (3/4) ... [2024-06-28 03:43:33,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b836af0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:43:33, skipping insertion in model container [2024-06-28 03:43:33,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:43:33" (4/4) ... [2024-06-28 03:43:33,316 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_tso.i [2024-06-28 03:43:33,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:43:33,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:43:33,331 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:43:33,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:43:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:43:33,439 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 03:43:33,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:43:33,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:43:33,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 03:43:33,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 03:43:33,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:43:33,461 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;@261df915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:43:33,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:43:33,463 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:43:33,463 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:43:33,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:43:33,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:33,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:43:33,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:33,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 364174474, now seen corresponding path program 1 times [2024-06-28 03:43:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770554596] [2024-06-28 03:43:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:34,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:34,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770554596] [2024-06-28 03:43:34,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770554596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:34,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:34,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:43:34,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907234013] [2024-06-28 03:43:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:43:34,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:43:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:43:34,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 03:43:34,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:34,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:34,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 03:43:34,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:34,262 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-28 03:43:34,262 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:43:34,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 97 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-28 03:43:34,267 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-28 03:43:34,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-28 03:43:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:43:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:43:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-28 03:43:34,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 03:43:34,278 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 50 transitions. [2024-06-28 03:43:34,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-28 03:43:34,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:43:34,282 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 03:43:34,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 03:43:34,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 03:43:34,286 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 03:43:34,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:34,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:34,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:34,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:43:34,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:34,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:34,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2079351977, now seen corresponding path program 1 times [2024-06-28 03:43:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:34,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449541015] [2024-06-28 03:43:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:34,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:34,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:34,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449541015] [2024-06-28 03:43:34,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449541015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:34,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:34,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:43:34,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599461983] [2024-06-28 03:43:34,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:34,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:43:34,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:43:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:43:34,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:43:34,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-06-28 03:43:34,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:34,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:43:34,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:34,746 INFO L124 PetriNetUnfolderBase]: 186/336 cut-off events. [2024-06-28 03:43:34,746 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-28 03:43:34,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 336 events. 186/336 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1173 event pairs, 94 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-28 03:43:34,749 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-28 03:43:34,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 157 flow [2024-06-28 03:43:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:43:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:43:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-28 03:43:34,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 03:43:34,750 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-28 03:43:34,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 157 flow [2024-06-28 03:43:34,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:43:34,751 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 03:43:34,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 03:43:34,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 03:43:34,752 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 03:43:34,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-06-28 03:43:34,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:34,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:43:34,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:34,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 35402953, now seen corresponding path program 1 times [2024-06-28 03:43:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194090255] [2024-06-28 03:43:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194090255] [2024-06-28 03:43:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194090255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:35,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:35,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:43:35,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276450220] [2024-06-28 03:43:35,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:35,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:43:35,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:35,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:43:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:43:35,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:43:35,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:35,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:35,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:43:35,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:35,176 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-28 03:43:35,177 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-28 03:43:35,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 326 events. 180/326 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1108 event pairs, 52 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-28 03:43:35,179 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-28 03:43:35,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 209 flow [2024-06-28 03:43:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:43:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:43:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-28 03:43:35,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:43:35,180 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-06-28 03:43:35,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 209 flow [2024-06-28 03:43:35,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:43:35,182 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-28 03:43:35,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-28 03:43:35,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-28 03:43:35,183 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-28 03:43:35,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:35,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:35,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:35,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:43:35,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:35,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:35,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2055807826, now seen corresponding path program 1 times [2024-06-28 03:43:35,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:35,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603615528] [2024-06-28 03:43:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:35,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603615528] [2024-06-28 03:43:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603615528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:35,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:35,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:43:35,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152916073] [2024-06-28 03:43:35,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:35,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:43:35,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:35,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:43:35,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:43:35,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 03:43:35,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:35,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:35,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 03:43:35,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:35,877 INFO L124 PetriNetUnfolderBase]: 176/318 cut-off events. [2024-06-28 03:43:35,877 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-28 03:43:35,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 318 events. 176/318 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 30 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-28 03:43:35,879 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-28 03:43:35,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 223 flow [2024-06-28 03:43:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 03:43:35,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 03:43:35,880 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 83 transitions. [2024-06-28 03:43:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 223 flow [2024-06-28 03:43:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 208 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:35,882 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-28 03:43:35,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-28 03:43:35,882 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 03:43:35,883 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-28 03:43:35,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:35,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:35,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:43:35,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:35,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash -955188088, now seen corresponding path program 1 times [2024-06-28 03:43:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068052279] [2024-06-28 03:43:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:36,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068052279] [2024-06-28 03:43:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068052279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:43:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391322793] [2024-06-28 03:43:36,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:43:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:43:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:43:36,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:43:36,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:36,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:36,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:43:36,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:36,444 INFO L124 PetriNetUnfolderBase]: 147/282 cut-off events. [2024-06-28 03:43:36,444 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-28 03:43:36,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 282 events. 147/282 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 986 event pairs, 53 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-28 03:43:36,446 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-28 03:43:36,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 194 flow [2024-06-28 03:43:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:43:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:43:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-28 03:43:36,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-28 03:43:36,447 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 58 transitions. [2024-06-28 03:43:36,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 194 flow [2024-06-28 03:43:36,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:36,449 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 121 flow [2024-06-28 03:43:36,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-28 03:43:36,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-28 03:43:36,450 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 121 flow [2024-06-28 03:43:36,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:36,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:36,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:36,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:43:36,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:36,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 453941276, now seen corresponding path program 1 times [2024-06-28 03:43:36,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:36,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33749621] [2024-06-28 03:43:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:36,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33749621] [2024-06-28 03:43:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33749621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:37,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509688456] [2024-06-28 03:43:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:37,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:37,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 03:43:37,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:37,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 03:43:37,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:37,260 INFO L124 PetriNetUnfolderBase]: 143/276 cut-off events. [2024-06-28 03:43:37,260 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-06-28 03:43:37,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 276 events. 143/276 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 951 event pairs, 51 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 803. Up to 247 conditions per place. [2024-06-28 03:43:37,262 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-28 03:43:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 215 flow [2024-06-28 03:43:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-28 03:43:37,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 03:43:37,263 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 121 flow. Second operand 6 states and 68 transitions. [2024-06-28 03:43:37,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 215 flow [2024-06-28 03:43:37,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:37,265 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 143 flow [2024-06-28 03:43:37,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-28 03:43:37,266 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-28 03:43:37,266 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 143 flow [2024-06-28 03:43:37,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:37,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:37,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:43:37,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:37,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1451998865, now seen corresponding path program 1 times [2024-06-28 03:43:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:37,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73397034] [2024-06-28 03:43:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:37,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73397034] [2024-06-28 03:43:37,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73397034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:37,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:37,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:37,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875370171] [2024-06-28 03:43:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:37,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:37,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:37,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:37,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:37,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:37,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:37,878 INFO L124 PetriNetUnfolderBase]: 171/311 cut-off events. [2024-06-28 03:43:37,879 INFO L125 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2024-06-28 03:43:37,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 311 events. 171/311 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1041 event pairs, 61 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 993. Up to 291 conditions per place. [2024-06-28 03:43:37,881 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-28 03:43:37,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 253 flow [2024-06-28 03:43:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-28 03:43:37,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 03:43:37,882 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 143 flow. Second operand 6 states and 65 transitions. [2024-06-28 03:43:37,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 253 flow [2024-06-28 03:43:37,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 236 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:37,885 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 159 flow [2024-06-28 03:43:37,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 03:43:37,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-28 03:43:37,887 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 159 flow [2024-06-28 03:43:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:37,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:37,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:43:37,887 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:37,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:37,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1461979625, now seen corresponding path program 2 times [2024-06-28 03:43:37,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:37,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430427807] [2024-06-28 03:43:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:37,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430427807] [2024-06-28 03:43:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430427807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:38,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:43:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295061192] [2024-06-28 03:43:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:43:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:43:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:43:38,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:38,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:38,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:38,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:38,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:38,496 INFO L124 PetriNetUnfolderBase]: 169/309 cut-off events. [2024-06-28 03:43:38,496 INFO L125 PetriNetUnfolderBase]: For 926/928 co-relation queries the response was YES. [2024-06-28 03:43:38,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 309 events. 169/309 cut-off events. For 926/928 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1032 event pairs, 65 based on Foata normal form. 3/311 useless extension candidates. Maximal degree in co-relation 1035. Up to 282 conditions per place. [2024-06-28 03:43:38,499 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2024-06-28 03:43:38,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 263 flow [2024-06-28 03:43:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:43:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:43:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 03:43:38,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:43:38,501 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 159 flow. Second operand 6 states and 64 transitions. [2024-06-28 03:43:38,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 263 flow [2024-06-28 03:43:38,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 246 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:38,503 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 185 flow [2024-06-28 03:43:38,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-28 03:43:38,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 03:43:38,509 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 185 flow [2024-06-28 03:43:38,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:38,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:38,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:38,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:43:38,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:38,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash 828998667, now seen corresponding path program 1 times [2024-06-28 03:43:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152678587] [2024-06-28 03:43:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152678587] [2024-06-28 03:43:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152678587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222741765] [2024-06-28 03:43:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:38,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 185 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:39,169 INFO L124 PetriNetUnfolderBase]: 191/349 cut-off events. [2024-06-28 03:43:39,170 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-06-28 03:43:39,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 349 events. 191/349 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1214 event pairs, 43 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 1225. Up to 288 conditions per place. [2024-06-28 03:43:39,172 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-28 03:43:39,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 383 flow [2024-06-28 03:43:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:43:39,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:43:39,173 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 185 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:43:39,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 383 flow [2024-06-28 03:43:39,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 352 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:39,175 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 261 flow [2024-06-28 03:43:39,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-28 03:43:39,176 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-28 03:43:39,176 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 261 flow [2024-06-28 03:43:39,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:39,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:39,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:39,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:43:39,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:39,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2062172631, now seen corresponding path program 2 times [2024-06-28 03:43:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258405584] [2024-06-28 03:43:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:39,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:39,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258405584] [2024-06-28 03:43:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258405584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:39,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:39,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749356292] [2024-06-28 03:43:39,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:39,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:39,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:39,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:39,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:39,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:39,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:39,818 INFO L124 PetriNetUnfolderBase]: 197/359 cut-off events. [2024-06-28 03:43:39,818 INFO L125 PetriNetUnfolderBase]: For 1681/1681 co-relation queries the response was YES. [2024-06-28 03:43:39,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 359 events. 197/359 cut-off events. For 1681/1681 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1262 event pairs, 42 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 1413. Up to 290 conditions per place. [2024-06-28 03:43:39,820 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2024-06-28 03:43:39,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 455 flow [2024-06-28 03:43:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:39,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:43:39,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:43:39,821 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 261 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:43:39,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 455 flow [2024-06-28 03:43:39,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 430 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:39,824 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 334 flow [2024-06-28 03:43:39,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-28 03:43:39,825 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-28 03:43:39,825 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 334 flow [2024-06-28 03:43:39,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:39,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:39,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:39,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:43:39,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:39,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837165, now seen corresponding path program 3 times [2024-06-28 03:43:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:39,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628944997] [2024-06-28 03:43:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:39,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628944997] [2024-06-28 03:43:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628944997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:40,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:40,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385493839] [2024-06-28 03:43:40,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:40,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:40,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:40,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:40,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:40,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:40,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:40,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:40,492 INFO L124 PetriNetUnfolderBase]: 208/377 cut-off events. [2024-06-28 03:43:40,492 INFO L125 PetriNetUnfolderBase]: For 2311/2311 co-relation queries the response was YES. [2024-06-28 03:43:40,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 377 events. 208/377 cut-off events. For 2311/2311 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1336 event pairs, 47 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 1643. Up to 291 conditions per place. [2024-06-28 03:43:40,495 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 23 changer transitions 0/65 dead transitions. [2024-06-28 03:43:40,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 558 flow [2024-06-28 03:43:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 03:43:40,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 03:43:40,501 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 334 flow. Second operand 7 states and 79 transitions. [2024-06-28 03:43:40,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 558 flow [2024-06-28 03:43:40,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 511 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:40,504 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 388 flow [2024-06-28 03:43:40,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-28 03:43:40,505 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-28 03:43:40,505 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 388 flow [2024-06-28 03:43:40,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:40,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:40,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:40,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:43:40,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:40,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837351, now seen corresponding path program 1 times [2024-06-28 03:43:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:40,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546190109] [2024-06-28 03:43:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546190109] [2024-06-28 03:43:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546190109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066648747] [2024-06-28 03:43:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:41,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:41,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:41,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:41,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:41,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:41,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:41,370 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-28 03:43:41,371 INFO L125 PetriNetUnfolderBase]: For 2304/2304 co-relation queries the response was YES. [2024-06-28 03:43:41,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 382 events. 211/382 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1361 event pairs, 45 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1642. Up to 352 conditions per place. [2024-06-28 03:43:41,373 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 51 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-28 03:43:41,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 554 flow [2024-06-28 03:43:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 03:43:41,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-28 03:43:41,374 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 388 flow. Second operand 7 states and 73 transitions. [2024-06-28 03:43:41,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 554 flow [2024-06-28 03:43:41,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 527 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:41,378 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 404 flow [2024-06-28 03:43:41,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-28 03:43:41,378 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-28 03:43:41,378 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 404 flow [2024-06-28 03:43:41,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:41,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:41,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:43:41,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:41,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1849076037, now seen corresponding path program 2 times [2024-06-28 03:43:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:41,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364272894] [2024-06-28 03:43:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364272894] [2024-06-28 03:43:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364272894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522018704] [2024-06-28 03:43:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:42,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:42,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:42,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:42,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:42,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:42,197 INFO L124 PetriNetUnfolderBase]: 214/387 cut-off events. [2024-06-28 03:43:42,197 INFO L125 PetriNetUnfolderBase]: For 2612/2616 co-relation queries the response was YES. [2024-06-28 03:43:42,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 387 events. 214/387 cut-off events. For 2612/2616 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1384 event pairs, 46 based on Foata normal form. 5/391 useless extension candidates. Maximal degree in co-relation 1732. Up to 341 conditions per place. [2024-06-28 03:43:42,199 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 48 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2024-06-28 03:43:42,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 618 flow [2024-06-28 03:43:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:43:42,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-28 03:43:42,201 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 404 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:43:42,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 618 flow [2024-06-28 03:43:42,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 591 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:42,204 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 466 flow [2024-06-28 03:43:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-28 03:43:42,205 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-28 03:43:42,205 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 466 flow [2024-06-28 03:43:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:42,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:42,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:42,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:43:42,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:42,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1849313373, now seen corresponding path program 4 times [2024-06-28 03:43:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4389587] [2024-06-28 03:43:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:42,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4389587] [2024-06-28 03:43:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4389587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:42,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:42,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102663390] [2024-06-28 03:43:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:42,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:42,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:42,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 466 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:42,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:42,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:42,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:42,840 INFO L124 PetriNetUnfolderBase]: 210/381 cut-off events. [2024-06-28 03:43:42,840 INFO L125 PetriNetUnfolderBase]: For 2976/2980 co-relation queries the response was YES. [2024-06-28 03:43:42,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 381 events. 210/381 cut-off events. For 2976/2980 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1371 event pairs, 54 based on Foata normal form. 3/383 useless extension candidates. Maximal degree in co-relation 1771. Up to 283 conditions per place. [2024-06-28 03:43:42,843 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 27 changer transitions 0/72 dead transitions. [2024-06-28 03:43:42,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 678 flow [2024-06-28 03:43:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:43:42,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 03:43:42,844 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 466 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:43:42,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 678 flow [2024-06-28 03:43:42,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 652 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:42,850 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 523 flow [2024-06-28 03:43:42,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-06-28 03:43:42,851 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-28 03:43:42,851 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 523 flow [2024-06-28 03:43:42,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:42,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:42,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:43:42,852 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:42,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1849313187, now seen corresponding path program 3 times [2024-06-28 03:43:42,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:42,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907138782] [2024-06-28 03:43:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:43,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:43,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907138782] [2024-06-28 03:43:43,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907138782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:43,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:43,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:43:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520543883] [2024-06-28 03:43:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:43:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:43:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:43:43,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:43,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:43,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:43,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:43,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:43,699 INFO L124 PetriNetUnfolderBase]: 208/378 cut-off events. [2024-06-28 03:43:43,699 INFO L125 PetriNetUnfolderBase]: For 3273/3277 co-relation queries the response was YES. [2024-06-28 03:43:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 378 events. 208/378 cut-off events. For 3273/3277 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1367 event pairs, 45 based on Foata normal form. 5/382 useless extension candidates. Maximal degree in co-relation 1848. Up to 342 conditions per place. [2024-06-28 03:43:43,702 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 54 selfloop transitions, 15 changer transitions 0/71 dead transitions. [2024-06-28 03:43:43,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 692 flow [2024-06-28 03:43:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:43:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:43:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 03:43:43,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-28 03:43:43,703 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 523 flow. Second operand 7 states and 72 transitions. [2024-06-28 03:43:43,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 692 flow [2024-06-28 03:43:43,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 619 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:43,711 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 494 flow [2024-06-28 03:43:43,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-28 03:43:43,712 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-28 03:43:43,712 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 494 flow [2024-06-28 03:43:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:43,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:43,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:43,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:43:43,713 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:43,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1552331516, now seen corresponding path program 1 times [2024-06-28 03:43:43,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:43,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642399454] [2024-06-28 03:43:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642399454] [2024-06-28 03:43:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642399454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84288051] [2024-06-28 03:43:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:44,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:44,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:44,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 494 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:44,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:44,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:44,746 INFO L124 PetriNetUnfolderBase]: 217/393 cut-off events. [2024-06-28 03:43:44,746 INFO L125 PetriNetUnfolderBase]: For 3527/3527 co-relation queries the response was YES. [2024-06-28 03:43:44,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 393 events. 217/393 cut-off events. For 3527/3527 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1429 event pairs, 45 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1885. Up to 329 conditions per place. [2024-06-28 03:43:44,749 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-06-28 03:43:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 767 flow [2024-06-28 03:43:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:43:44,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:43:44,750 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 494 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:43:44,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 767 flow [2024-06-28 03:43:44,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 82 transitions, 734 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:44,755 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 614 flow [2024-06-28 03:43:44,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-06-28 03:43:44,755 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-28 03:43:44,755 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 614 flow [2024-06-28 03:43:44,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:44,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:44,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:43:44,756 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:44,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash -497156947, now seen corresponding path program 1 times [2024-06-28 03:43:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:44,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287751439] [2024-06-28 03:43:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287751439] [2024-06-28 03:43:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287751439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:45,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:45,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813913754] [2024-06-28 03:43:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:45,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:45,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:45,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:45,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:45,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:45,646 INFO L124 PetriNetUnfolderBase]: 223/403 cut-off events. [2024-06-28 03:43:45,646 INFO L125 PetriNetUnfolderBase]: For 4134/4134 co-relation queries the response was YES. [2024-06-28 03:43:45,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 403 events. 223/403 cut-off events. For 4134/4134 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1477 event pairs, 39 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 2019. Up to 314 conditions per place. [2024-06-28 03:43:45,649 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 28 changer transitions 0/87 dead transitions. [2024-06-28 03:43:45,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 846 flow [2024-06-28 03:43:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:43:45,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:43:45,650 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 614 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:43:45,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 846 flow [2024-06-28 03:43:45,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 816 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 03:43:45,656 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 667 flow [2024-06-28 03:43:45,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=667, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-28 03:43:45,657 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-28 03:43:45,657 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 667 flow [2024-06-28 03:43:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:45,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:45,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:45,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:43:45,657 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash -493437877, now seen corresponding path program 2 times [2024-06-28 03:43:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219411050] [2024-06-28 03:43:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219411050] [2024-06-28 03:43:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219411050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:46,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699257595] [2024-06-28 03:43:46,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:46,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:46,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 667 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:46,574 INFO L124 PetriNetUnfolderBase]: 229/413 cut-off events. [2024-06-28 03:43:46,574 INFO L125 PetriNetUnfolderBase]: For 4890/4890 co-relation queries the response was YES. [2024-06-28 03:43:46,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 413 events. 229/413 cut-off events. For 4890/4890 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1525 event pairs, 44 based on Foata normal form. 2/414 useless extension candidates. Maximal degree in co-relation 2150. Up to 314 conditions per place. [2024-06-28 03:43:46,577 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 31 changer transitions 0/88 dead transitions. [2024-06-28 03:43:46,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 927 flow [2024-06-28 03:43:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:43:46,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:43:46,578 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 667 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:43:46,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 927 flow [2024-06-28 03:43:46,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 864 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:46,584 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 695 flow [2024-06-28 03:43:46,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=695, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-06-28 03:43:46,584 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-28 03:43:46,584 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 695 flow [2024-06-28 03:43:46,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:46,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:46,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:46,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:43:46,585 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:46,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash 786285667, now seen corresponding path program 3 times [2024-06-28 03:43:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:46,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64504920] [2024-06-28 03:43:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:46,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:47,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64504920] [2024-06-28 03:43:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64504920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168253944] [2024-06-28 03:43:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:47,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:47,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:47,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:47,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 695 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:47,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:47,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:47,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:47,346 INFO L124 PetriNetUnfolderBase]: 235/423 cut-off events. [2024-06-28 03:43:47,346 INFO L125 PetriNetUnfolderBase]: For 5568/5568 co-relation queries the response was YES. [2024-06-28 03:43:47,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 423 events. 235/423 cut-off events. For 5568/5568 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1575 event pairs, 49 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 2259. Up to 387 conditions per place. [2024-06-28 03:43:47,348 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 70 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-28 03:43:47,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 927 flow [2024-06-28 03:43:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-28 03:43:47,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-28 03:43:47,350 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 695 flow. Second operand 8 states and 82 transitions. [2024-06-28 03:43:47,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 927 flow [2024-06-28 03:43:47,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 852 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:47,356 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 685 flow [2024-06-28 03:43:47,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-06-28 03:43:47,357 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-28 03:43:47,357 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 685 flow [2024-06-28 03:43:47,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:47,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:47,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:47,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:43:47,357 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:47,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:47,358 INFO L85 PathProgramCache]: Analyzing trace with hash 786285884, now seen corresponding path program 1 times [2024-06-28 03:43:47,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:47,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857650606] [2024-06-28 03:43:47,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:47,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:48,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857650606] [2024-06-28 03:43:48,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857650606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:48,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:48,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:48,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37735818] [2024-06-28 03:43:48,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:48,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:48,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:48,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:48,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:48,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:48,257 INFO L124 PetriNetUnfolderBase]: 238/428 cut-off events. [2024-06-28 03:43:48,257 INFO L125 PetriNetUnfolderBase]: For 5746/5746 co-relation queries the response was YES. [2024-06-28 03:43:48,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2327 conditions, 428 events. 238/428 cut-off events. For 5746/5746 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1591 event pairs, 48 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 2283. Up to 395 conditions per place. [2024-06-28 03:43:48,259 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 71 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-28 03:43:48,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 89 transitions, 905 flow [2024-06-28 03:43:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 03:43:48,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 03:43:48,261 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 685 flow. Second operand 8 states and 81 transitions. [2024-06-28 03:43:48,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 89 transitions, 905 flow [2024-06-28 03:43:48,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 856 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:48,269 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 691 flow [2024-06-28 03:43:48,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-28 03:43:48,269 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-28 03:43:48,269 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 691 flow [2024-06-28 03:43:48,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:48,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:48,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:43:48,270 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:48,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:48,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1494138783, now seen corresponding path program 4 times [2024-06-28 03:43:48,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:48,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783624375] [2024-06-28 03:43:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:48,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:48,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:48,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783624375] [2024-06-28 03:43:48,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783624375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:48,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:48,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748162004] [2024-06-28 03:43:48,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:48,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:48,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:48,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:48,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:48,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 691 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:48,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:48,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:49,081 INFO L124 PetriNetUnfolderBase]: 244/438 cut-off events. [2024-06-28 03:43:49,082 INFO L125 PetriNetUnfolderBase]: For 6443/6443 co-relation queries the response was YES. [2024-06-28 03:43:49,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 438 events. 244/438 cut-off events. For 6443/6443 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1631 event pairs, 52 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 2373. Up to 327 conditions per place. [2024-06-28 03:43:49,084 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 56 selfloop transitions, 34 changer transitions 0/92 dead transitions. [2024-06-28 03:43:49,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 967 flow [2024-06-28 03:43:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:43:49,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:43:49,086 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 691 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:43:49,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 967 flow [2024-06-28 03:43:49,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 928 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:49,093 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 757 flow [2024-06-28 03:43:49,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=757, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-28 03:43:49,094 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-28 03:43:49,094 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 757 flow [2024-06-28 03:43:49,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:49,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:49,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:43:49,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:49,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1982395708, now seen corresponding path program 2 times [2024-06-28 03:43:49,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:49,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705020135] [2024-06-28 03:43:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:49,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:49,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705020135] [2024-06-28 03:43:49,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705020135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:49,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:49,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:49,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124992544] [2024-06-28 03:43:49,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:49,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:49,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 757 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:49,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:49,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:49,883 INFO L124 PetriNetUnfolderBase]: 247/442 cut-off events. [2024-06-28 03:43:49,883 INFO L125 PetriNetUnfolderBase]: For 6966/6966 co-relation queries the response was YES. [2024-06-28 03:43:49,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 442 events. 247/442 cut-off events. For 6966/6966 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1655 event pairs, 50 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2499. Up to 404 conditions per place. [2024-06-28 03:43:49,889 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 71 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-06-28 03:43:49,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 979 flow [2024-06-28 03:43:49,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:43:49,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:43:49,891 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 757 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:43:49,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 979 flow [2024-06-28 03:43:49,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 890 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:49,902 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 731 flow [2024-06-28 03:43:49,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-28 03:43:49,903 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-28 03:43:49,903 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 731 flow [2024-06-28 03:43:49,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:49,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:49,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:43:49,904 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:49,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -349541767, now seen corresponding path program 5 times [2024-06-28 03:43:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596605726] [2024-06-28 03:43:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596605726] [2024-06-28 03:43:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596605726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:50,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:50,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936625679] [2024-06-28 03:43:50,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:50,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:50,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:50,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:50,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:50,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:50,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:50,654 INFO L124 PetriNetUnfolderBase]: 253/452 cut-off events. [2024-06-28 03:43:50,654 INFO L125 PetriNetUnfolderBase]: For 7697/7697 co-relation queries the response was YES. [2024-06-28 03:43:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2594 conditions, 452 events. 253/452 cut-off events. For 7697/7697 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1701 event pairs, 50 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 2547. Up to 411 conditions per place. [2024-06-28 03:43:50,660 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 74 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-28 03:43:50,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 977 flow [2024-06-28 03:43:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 03:43:50,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 03:43:50,661 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 731 flow. Second operand 8 states and 81 transitions. [2024-06-28 03:43:50,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 977 flow [2024-06-28 03:43:50,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 930 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:50,670 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 761 flow [2024-06-28 03:43:50,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=761, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-06-28 03:43:50,671 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-28 03:43:50,671 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 761 flow [2024-06-28 03:43:50,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:50,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:50,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:50,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:43:50,672 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:50,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:50,672 INFO L85 PathProgramCache]: Analyzing trace with hash -349339957, now seen corresponding path program 6 times [2024-06-28 03:43:50,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:50,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756887755] [2024-06-28 03:43:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:51,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:51,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756887755] [2024-06-28 03:43:51,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756887755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:51,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:51,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:51,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050043960] [2024-06-28 03:43:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:51,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:51,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:51,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:51,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 761 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:51,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:51,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:51,393 INFO L124 PetriNetUnfolderBase]: 254/454 cut-off events. [2024-06-28 03:43:51,393 INFO L125 PetriNetUnfolderBase]: For 8292/8292 co-relation queries the response was YES. [2024-06-28 03:43:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 454 events. 254/454 cut-off events. For 8292/8292 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1711 event pairs, 50 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2605. Up to 392 conditions per place. [2024-06-28 03:43:51,396 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 70 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-06-28 03:43:51,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 1021 flow [2024-06-28 03:43:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:43:51,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:43:51,398 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 761 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:43:51,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 1021 flow [2024-06-28 03:43:51,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 960 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:51,419 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 795 flow [2024-06-28 03:43:51,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-06-28 03:43:51,420 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-28 03:43:51,420 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 795 flow [2024-06-28 03:43:51,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:51,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:51,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:43:51,420 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:51,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:51,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1989747358, now seen corresponding path program 3 times [2024-06-28 03:43:51,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:51,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975468579] [2024-06-28 03:43:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:51,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:51,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:51,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975468579] [2024-06-28 03:43:51,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975468579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:51,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:51,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:51,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363131595] [2024-06-28 03:43:51,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:51,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:51,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:51,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:52,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:52,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 795 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:52,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:52,143 INFO L124 PetriNetUnfolderBase]: 265/472 cut-off events. [2024-06-28 03:43:52,143 INFO L125 PetriNetUnfolderBase]: For 9337/9337 co-relation queries the response was YES. [2024-06-28 03:43:52,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2809 conditions, 472 events. 265/472 cut-off events. For 9337/9337 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1808 event pairs, 49 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2760. Up to 393 conditions per place. [2024-06-28 03:43:52,146 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 28 changer transitions 0/106 dead transitions. [2024-06-28 03:43:52,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 1203 flow [2024-06-28 03:43:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:43:52,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:43:52,147 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 795 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:43:52,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 1203 flow [2024-06-28 03:43:52,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 1124 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:52,159 INFO L231 Difference]: Finished difference. Result has 103 places, 93 transitions, 841 flow [2024-06-28 03:43:52,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=103, PETRI_TRANSITIONS=93} [2024-06-28 03:43:52,160 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-28 03:43:52,160 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 93 transitions, 841 flow [2024-06-28 03:43:52,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:52,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:52,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:43:52,161 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:52,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1990014268, now seen corresponding path program 4 times [2024-06-28 03:43:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503682576] [2024-06-28 03:43:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:52,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:52,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:52,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503682576] [2024-06-28 03:43:52,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503682576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:52,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:52,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:52,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959590783] [2024-06-28 03:43:52,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:52,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:52,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:52,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:52,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:52,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 841 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:52,984 INFO L124 PetriNetUnfolderBase]: 263/470 cut-off events. [2024-06-28 03:43:52,984 INFO L125 PetriNetUnfolderBase]: For 9361/9361 co-relation queries the response was YES. [2024-06-28 03:43:52,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 470 events. 263/470 cut-off events. For 9361/9361 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1803 event pairs, 54 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2741. Up to 447 conditions per place. [2024-06-28 03:43:52,988 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 89 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 03:43:52,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1099 flow [2024-06-28 03:43:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-28 03:43:52,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-28 03:43:52,989 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 841 flow. Second operand 8 states and 78 transitions. [2024-06-28 03:43:52,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1099 flow [2024-06-28 03:43:52,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 1070 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:43:52,999 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 890 flow [2024-06-28 03:43:53,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-06-28 03:43:53,000 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-28 03:43:53,000 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 890 flow [2024-06-28 03:43:53,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:53,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:43:53,001 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:53,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash -185798448, now seen corresponding path program 2 times [2024-06-28 03:43:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:53,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66530461] [2024-06-28 03:43:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66530461] [2024-06-28 03:43:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66530461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888706603] [2024-06-28 03:43:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:53,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:53,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 890 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:53,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:53,801 INFO L124 PetriNetUnfolderBase]: 270/482 cut-off events. [2024-06-28 03:43:53,801 INFO L125 PetriNetUnfolderBase]: For 9980/9980 co-relation queries the response was YES. [2024-06-28 03:43:53,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2913 conditions, 482 events. 270/482 cut-off events. For 9980/9980 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1853 event pairs, 44 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2860. Up to 416 conditions per place. [2024-06-28 03:43:53,805 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 89 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2024-06-28 03:43:53,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 1217 flow [2024-06-28 03:43:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:43:53,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:43:53,806 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 890 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:43:53,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 1217 flow [2024-06-28 03:43:53,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 1171 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:43:53,817 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 975 flow [2024-06-28 03:43:53,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-28 03:43:53,818 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-28 03:43:53,818 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 975 flow [2024-06-28 03:43:53,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:53,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:53,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:43:53,819 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:53,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1713384802, now seen corresponding path program 3 times [2024-06-28 03:43:53,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:53,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670862610] [2024-06-28 03:43:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:53,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670862610] [2024-06-28 03:43:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670862610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:43:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922083337] [2024-06-28 03:43:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:43:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:43:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:43:54,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:54,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 975 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:54,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:54,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:54,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:54,653 INFO L124 PetriNetUnfolderBase]: 268/479 cut-off events. [2024-06-28 03:43:54,653 INFO L125 PetriNetUnfolderBase]: For 10508/10508 co-relation queries the response was YES. [2024-06-28 03:43:54,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 479 events. 268/479 cut-off events. For 10508/10508 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1852 event pairs, 44 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 2897. Up to 413 conditions per place. [2024-06-28 03:43:54,656 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 89 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-28 03:43:54,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 115 transitions, 1242 flow [2024-06-28 03:43:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:43:54,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 03:43:54,658 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 975 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:43:54,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 115 transitions, 1242 flow [2024-06-28 03:43:54,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 1171 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:54,671 INFO L231 Difference]: Finished difference. Result has 116 places, 102 transitions, 960 flow [2024-06-28 03:43:54,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=960, PETRI_PLACES=116, PETRI_TRANSITIONS=102} [2024-06-28 03:43:54,671 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-28 03:43:54,671 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 102 transitions, 960 flow [2024-06-28 03:43:54,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:54,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:54,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:43:54,672 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1486504506, now seen corresponding path program 1 times [2024-06-28 03:43:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:54,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794510549] [2024-06-28 03:43:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794510549] [2024-06-28 03:43:55,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794510549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:55,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:55,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917114306] [2024-06-28 03:43:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:55,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:55,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:55,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:55,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:55,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 102 transitions, 960 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:55,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:55,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:55,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:55,982 INFO L124 PetriNetUnfolderBase]: 265/474 cut-off events. [2024-06-28 03:43:55,982 INFO L125 PetriNetUnfolderBase]: For 10892/10892 co-relation queries the response was YES. [2024-06-28 03:43:55,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 474 events. 265/474 cut-off events. For 10892/10892 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1810 event pairs, 56 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 2830. Up to 445 conditions per place. [2024-06-28 03:43:55,990 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 95 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-28 03:43:55,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 1198 flow [2024-06-28 03:43:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:43:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:43:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-28 03:43:55,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-06-28 03:43:55,992 INFO L175 Difference]: Start difference. First operand has 116 places, 102 transitions, 960 flow. Second operand 9 states and 85 transitions. [2024-06-28 03:43:55,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 1198 flow [2024-06-28 03:43:56,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 1135 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:43:56,006 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 929 flow [2024-06-28 03:43:56,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=929, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-06-28 03:43:56,008 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-28 03:43:56,008 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 929 flow [2024-06-28 03:43:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:56,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:43:56,009 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:56,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1513273206, now seen corresponding path program 1 times [2024-06-28 03:43:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016212061] [2024-06-28 03:43:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016212061] [2024-06-28 03:43:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016212061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385858900] [2024-06-28 03:43:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:56,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:56,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 929 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:56,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:56,885 INFO L124 PetriNetUnfolderBase]: 269/482 cut-off events. [2024-06-28 03:43:56,886 INFO L125 PetriNetUnfolderBase]: For 11462/11462 co-relation queries the response was YES. [2024-06-28 03:43:56,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 482 events. 269/482 cut-off events. For 11462/11462 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1870 event pairs, 28 based on Foata normal form. 2/483 useless extension candidates. Maximal degree in co-relation 2860. Up to 393 conditions per place. [2024-06-28 03:43:56,889 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 92 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2024-06-28 03:43:56,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 116 transitions, 1203 flow [2024-06-28 03:43:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:43:56,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:43:56,891 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 929 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:43:56,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 116 transitions, 1203 flow [2024-06-28 03:43:56,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 116 transitions, 1153 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:56,905 INFO L231 Difference]: Finished difference. Result has 119 places, 103 transitions, 943 flow [2024-06-28 03:43:56,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=943, PETRI_PLACES=119, PETRI_TRANSITIONS=103} [2024-06-28 03:43:56,906 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-28 03:43:56,906 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 103 transitions, 943 flow [2024-06-28 03:43:56,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:56,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:56,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:43:56,907 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:56,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1513212632, now seen corresponding path program 1 times [2024-06-28 03:43:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:56,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869910722] [2024-06-28 03:43:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:57,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869910722] [2024-06-28 03:43:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869910722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:57,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:57,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454677694] [2024-06-28 03:43:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:57,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:57,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:57,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 103 transitions, 943 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:57,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:57,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:57,881 INFO L124 PetriNetUnfolderBase]: 267/479 cut-off events. [2024-06-28 03:43:57,881 INFO L125 PetriNetUnfolderBase]: For 11443/11443 co-relation queries the response was YES. [2024-06-28 03:43:57,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 479 events. 267/479 cut-off events. For 11443/11443 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1857 event pairs, 41 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 2835. Up to 372 conditions per place. [2024-06-28 03:43:57,884 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 80 selfloop transitions, 36 changer transitions 0/118 dead transitions. [2024-06-28 03:43:57,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 118 transitions, 1251 flow [2024-06-28 03:43:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:43:57,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 03:43:57,885 INFO L175 Difference]: Start difference. First operand has 119 places, 103 transitions, 943 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:43:57,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 118 transitions, 1251 flow [2024-06-28 03:43:57,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 118 transitions, 1197 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:57,897 INFO L231 Difference]: Finished difference. Result has 121 places, 105 transitions, 1017 flow [2024-06-28 03:43:57,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1017, PETRI_PLACES=121, PETRI_TRANSITIONS=105} [2024-06-28 03:43:57,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-28 03:43:57,897 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 105 transitions, 1017 flow [2024-06-28 03:43:57,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:57,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:57,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:43:57,898 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:57,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1513212756, now seen corresponding path program 2 times [2024-06-28 03:43:57,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:57,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127491484] [2024-06-28 03:43:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:57,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:58,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:58,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127491484] [2024-06-28 03:43:58,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127491484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:58,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578652094] [2024-06-28 03:43:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:58,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:58,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:58,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 105 transitions, 1017 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:58,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:58,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:58,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:58,831 INFO L124 PetriNetUnfolderBase]: 271/487 cut-off events. [2024-06-28 03:43:58,831 INFO L125 PetriNetUnfolderBase]: For 13042/13042 co-relation queries the response was YES. [2024-06-28 03:43:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 487 events. 271/487 cut-off events. For 13042/13042 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1911 event pairs, 41 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2943. Up to 387 conditions per place. [2024-06-28 03:43:58,834 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 84 selfloop transitions, 33 changer transitions 0/119 dead transitions. [2024-06-28 03:43:58,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 119 transitions, 1301 flow [2024-06-28 03:43:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:43:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:43:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:43:58,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:43:58,835 INFO L175 Difference]: Start difference. First operand has 121 places, 105 transitions, 1017 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:43:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 119 transitions, 1301 flow [2024-06-28 03:43:58,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 1201 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:58,849 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 1010 flow [2024-06-28 03:43:58,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1010, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-28 03:43:58,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-28 03:43:58,849 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 1010 flow [2024-06-28 03:43:58,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:58,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:58,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:58,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:43:58,850 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:58,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1510411286, now seen corresponding path program 1 times [2024-06-28 03:43:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945618429] [2024-06-28 03:43:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945618429] [2024-06-28 03:43:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945618429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:59,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:59,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:43:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542697600] [2024-06-28 03:43:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:59,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:43:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:43:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:43:59,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:43:59,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 1010 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:59,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:43:59,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:59,616 INFO L124 PetriNetUnfolderBase]: 277/497 cut-off events. [2024-06-28 03:43:59,616 INFO L125 PetriNetUnfolderBase]: For 13344/13344 co-relation queries the response was YES. [2024-06-28 03:43:59,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3027 conditions, 497 events. 277/497 cut-off events. For 13344/13344 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1971 event pairs, 39 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2969. Up to 398 conditions per place. [2024-06-28 03:43:59,619 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 90 selfloop transitions, 32 changer transitions 0/124 dead transitions. [2024-06-28 03:43:59,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1340 flow [2024-06-28 03:43:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:43:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:43:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:43:59,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:43:59,620 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 1010 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:43:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1340 flow [2024-06-28 03:43:59,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 124 transitions, 1267 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:43:59,645 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1040 flow [2024-06-28 03:43:59,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-06-28 03:43:59,646 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-28 03:43:59,646 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1040 flow [2024-06-28 03:43:59,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:59,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:43:59,646 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:59,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1395125076, now seen corresponding path program 3 times [2024-06-28 03:43:59,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:59,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732228868] [2024-06-28 03:43:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732228868] [2024-06-28 03:44:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732228868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:00,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305088177] [2024-06-28 03:44:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:00,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:00,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1040 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:00,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:00,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:00,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:00,570 INFO L124 PetriNetUnfolderBase]: 281/505 cut-off events. [2024-06-28 03:44:00,570 INFO L125 PetriNetUnfolderBase]: For 14138/14138 co-relation queries the response was YES. [2024-06-28 03:44:00,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 505 events. 281/505 cut-off events. For 14138/14138 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2005 event pairs, 42 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 3064. Up to 404 conditions per place. [2024-06-28 03:44:00,572 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 85 selfloop transitions, 34 changer transitions 0/121 dead transitions. [2024-06-28 03:44:00,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 121 transitions, 1328 flow [2024-06-28 03:44:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:44:00,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 03:44:00,574 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1040 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:44:00,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 121 transitions, 1328 flow [2024-06-28 03:44:00,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 1241 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:00,590 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 1045 flow [2024-06-28 03:44:00,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1045, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2024-06-28 03:44:00,591 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-28 03:44:00,591 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 1045 flow [2024-06-28 03:44:00,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:00,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:00,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:00,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:44:00,592 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:00,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:00,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1395120116, now seen corresponding path program 2 times [2024-06-28 03:44:00,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:00,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804354574] [2024-06-28 03:44:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:00,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804354574] [2024-06-28 03:44:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804354574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791024898] [2024-06-28 03:44:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:01,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:01,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 1045 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:01,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:01,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:01,390 INFO L124 PetriNetUnfolderBase]: 287/515 cut-off events. [2024-06-28 03:44:01,390 INFO L125 PetriNetUnfolderBase]: For 15085/15085 co-relation queries the response was YES. [2024-06-28 03:44:01,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 515 events. 287/515 cut-off events. For 15085/15085 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2071 event pairs, 42 based on Foata normal form. 2/516 useless extension candidates. Maximal degree in co-relation 3125. Up to 404 conditions per place. [2024-06-28 03:44:01,394 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 86 selfloop transitions, 37 changer transitions 0/125 dead transitions. [2024-06-28 03:44:01,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 125 transitions, 1365 flow [2024-06-28 03:44:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:44:01,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:44:01,395 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 1045 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:44:01,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 125 transitions, 1365 flow [2024-06-28 03:44:01,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1283 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:01,411 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 1080 flow [2024-06-28 03:44:01,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-06-28 03:44:01,411 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 03:44:01,411 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 1080 flow [2024-06-28 03:44:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:01,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:44:01,412 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1394947136, now seen corresponding path program 3 times [2024-06-28 03:44:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471293422] [2024-06-28 03:44:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:01,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:01,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471293422] [2024-06-28 03:44:01,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471293422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:01,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479956894] [2024-06-28 03:44:01,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:01,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:01,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:02,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:02,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 1080 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:02,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:02,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:02,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:02,230 INFO L124 PetriNetUnfolderBase]: 328/581 cut-off events. [2024-06-28 03:44:02,230 INFO L125 PetriNetUnfolderBase]: For 19872/19872 co-relation queries the response was YES. [2024-06-28 03:44:02,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 581 events. 328/581 cut-off events. For 19872/19872 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2390 event pairs, 48 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3769. Up to 494 conditions per place. [2024-06-28 03:44:02,234 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-28 03:44:02,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1656 flow [2024-06-28 03:44:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:44:02,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:44:02,235 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 1080 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:44:02,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1656 flow [2024-06-28 03:44:02,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1555 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:02,257 INFO L231 Difference]: Finished difference. Result has 133 places, 120 transitions, 1191 flow [2024-06-28 03:44:02,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1191, PETRI_PLACES=133, PETRI_TRANSITIONS=120} [2024-06-28 03:44:02,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-28 03:44:02,258 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 120 transitions, 1191 flow [2024-06-28 03:44:02,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:02,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:02,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:02,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:44:02,258 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:02,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash -956869510, now seen corresponding path program 1 times [2024-06-28 03:44:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:02,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752690516] [2024-06-28 03:44:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:03,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752690516] [2024-06-28 03:44:03,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752690516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:03,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:03,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727705829] [2024-06-28 03:44:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:03,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:03,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:03,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:03,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 120 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:03,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:03,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:03,420 INFO L124 PetriNetUnfolderBase]: 326/578 cut-off events. [2024-06-28 03:44:03,420 INFO L125 PetriNetUnfolderBase]: For 19827/19827 co-relation queries the response was YES. [2024-06-28 03:44:03,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 578 events. 326/578 cut-off events. For 19827/19827 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2382 event pairs, 55 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 3767. Up to 542 conditions per place. [2024-06-28 03:44:03,424 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 110 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-28 03:44:03,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 1471 flow [2024-06-28 03:44:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:44:03,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 03:44:03,425 INFO L175 Difference]: Start difference. First operand has 133 places, 120 transitions, 1191 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:44:03,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 1471 flow [2024-06-28 03:44:03,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 130 transitions, 1412 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:44:03,448 INFO L231 Difference]: Finished difference. Result has 138 places, 120 transitions, 1173 flow [2024-06-28 03:44:03,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1173, PETRI_PLACES=138, PETRI_TRANSITIONS=120} [2024-06-28 03:44:03,449 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-28 03:44:03,449 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 120 transitions, 1173 flow [2024-06-28 03:44:03,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:03,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:03,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:03,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:44:03,450 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:03,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:03,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1394940626, now seen corresponding path program 4 times [2024-06-28 03:44:03,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:03,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901446664] [2024-06-28 03:44:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:03,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:03,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:03,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901446664] [2024-06-28 03:44:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901446664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473006161] [2024-06-28 03:44:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:04,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:04,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 120 transitions, 1173 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:04,270 INFO L124 PetriNetUnfolderBase]: 318/566 cut-off events. [2024-06-28 03:44:04,270 INFO L125 PetriNetUnfolderBase]: For 19760/19760 co-relation queries the response was YES. [2024-06-28 03:44:04,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3623 conditions, 566 events. 318/566 cut-off events. For 19760/19760 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2322 event pairs, 48 based on Foata normal form. 4/569 useless extension candidates. Maximal degree in co-relation 3558. Up to 489 conditions per place. [2024-06-28 03:44:04,273 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 24 changer transitions 0/134 dead transitions. [2024-06-28 03:44:04,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 134 transitions, 1545 flow [2024-06-28 03:44:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:44:04,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:44:04,274 INFO L175 Difference]: Start difference. First operand has 138 places, 120 transitions, 1173 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:44:04,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 134 transitions, 1545 flow [2024-06-28 03:44:04,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 134 transitions, 1466 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:04,300 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1149 flow [2024-06-28 03:44:04,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1149, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-28 03:44:04,301 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-28 03:44:04,301 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1149 flow [2024-06-28 03:44:04,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:04,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:04,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:44:04,301 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:04,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1552865958, now seen corresponding path program 2 times [2024-06-28 03:44:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403330721] [2024-06-28 03:44:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:05,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:05,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403330721] [2024-06-28 03:44:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403330721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:05,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:05,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:05,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261360233] [2024-06-28 03:44:05,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:05,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:05,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:05,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:05,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1149 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:05,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:05,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:05,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:05,404 INFO L124 PetriNetUnfolderBase]: 321/571 cut-off events. [2024-06-28 03:44:05,404 INFO L125 PetriNetUnfolderBase]: For 19082/19082 co-relation queries the response was YES. [2024-06-28 03:44:05,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3645 conditions, 571 events. 321/571 cut-off events. For 19082/19082 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2347 event pairs, 60 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 3579. Up to 538 conditions per place. [2024-06-28 03:44:05,407 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 111 selfloop transitions, 19 changer transitions 0/132 dead transitions. [2024-06-28 03:44:05,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 132 transitions, 1529 flow [2024-06-28 03:44:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:44:05,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 03:44:05,419 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1149 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:44:05,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 132 transitions, 1529 flow [2024-06-28 03:44:05,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 132 transitions, 1485 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:05,446 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1174 flow [2024-06-28 03:44:05,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1174, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2024-06-28 03:44:05,448 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-28 03:44:05,448 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1174 flow [2024-06-28 03:44:05,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:05,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:05,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:05,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:44:05,449 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:05,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:05,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1560901158, now seen corresponding path program 3 times [2024-06-28 03:44:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315323990] [2024-06-28 03:44:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:05,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315323990] [2024-06-28 03:44:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315323990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:06,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983099412] [2024-06-28 03:44:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:06,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:06,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1174 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:06,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:06,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:06,523 INFO L124 PetriNetUnfolderBase]: 319/568 cut-off events. [2024-06-28 03:44:06,523 INFO L125 PetriNetUnfolderBase]: For 19323/19323 co-relation queries the response was YES. [2024-06-28 03:44:06,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 568 events. 319/568 cut-off events. For 19323/19323 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2335 event pairs, 60 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3534. Up to 542 conditions per place. [2024-06-28 03:44:06,526 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 113 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2024-06-28 03:44:06,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 130 transitions, 1448 flow [2024-06-28 03:44:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-28 03:44:06,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-28 03:44:06,534 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1174 flow. Second operand 9 states and 86 transitions. [2024-06-28 03:44:06,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 130 transitions, 1448 flow [2024-06-28 03:44:06,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 1383 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:06,564 INFO L231 Difference]: Finished difference. Result has 145 places, 122 transitions, 1144 flow [2024-06-28 03:44:06,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1144, PETRI_PLACES=145, PETRI_TRANSITIONS=122} [2024-06-28 03:44:06,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 03:44:06,566 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 122 transitions, 1144 flow [2024-06-28 03:44:06,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:06,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:06,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:44:06,566 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:06,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash 926511926, now seen corresponding path program 5 times [2024-06-28 03:44:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578535603] [2024-06-28 03:44:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:06,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:07,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:07,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578535603] [2024-06-28 03:44:07,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578535603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:07,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:07,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:07,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276916410] [2024-06-28 03:44:07,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:07,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:07,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:07,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:07,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 122 transitions, 1144 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:07,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:07,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:07,386 INFO L124 PetriNetUnfolderBase]: 355/627 cut-off events. [2024-06-28 03:44:07,386 INFO L125 PetriNetUnfolderBase]: For 25574/25574 co-relation queries the response was YES. [2024-06-28 03:44:07,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 627 events. 355/627 cut-off events. For 25574/25574 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2651 event pairs, 58 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 4120. Up to 533 conditions per place. [2024-06-28 03:44:07,389 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 113 selfloop transitions, 27 changer transitions 0/142 dead transitions. [2024-06-28 03:44:07,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 142 transitions, 1738 flow [2024-06-28 03:44:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:44:07,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 03:44:07,397 INFO L175 Difference]: Start difference. First operand has 145 places, 122 transitions, 1144 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:44:07,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 142 transitions, 1738 flow [2024-06-28 03:44:07,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 1695 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:07,432 INFO L231 Difference]: Finished difference. Result has 145 places, 129 transitions, 1294 flow [2024-06-28 03:44:07,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2024-06-28 03:44:07,433 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 03:44:07,433 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 1294 flow [2024-06-28 03:44:07,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:07,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:07,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:44:07,434 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:07,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1324725550, now seen corresponding path program 6 times [2024-06-28 03:44:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470834390] [2024-06-28 03:44:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:07,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:07,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470834390] [2024-06-28 03:44:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470834390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971948753] [2024-06-28 03:44:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:08,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:08,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:08,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:08,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:08,240 INFO L124 PetriNetUnfolderBase]: 349/619 cut-off events. [2024-06-28 03:44:08,241 INFO L125 PetriNetUnfolderBase]: For 25674/25674 co-relation queries the response was YES. [2024-06-28 03:44:08,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 619 events. 349/619 cut-off events. For 25674/25674 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2601 event pairs, 56 based on Foata normal form. 4/622 useless extension candidates. Maximal degree in co-relation 4034. Up to 532 conditions per place. [2024-06-28 03:44:08,244 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 113 selfloop transitions, 26 changer transitions 0/141 dead transitions. [2024-06-28 03:44:08,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 141 transitions, 1682 flow [2024-06-28 03:44:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:44:08,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:44:08,245 INFO L175 Difference]: Start difference. First operand has 145 places, 129 transitions, 1294 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:44:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 141 transitions, 1682 flow [2024-06-28 03:44:08,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 141 transitions, 1564 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:08,282 INFO L231 Difference]: Finished difference. Result has 149 places, 129 transitions, 1235 flow [2024-06-28 03:44:08,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1235, PETRI_PLACES=149, PETRI_TRANSITIONS=129} [2024-06-28 03:44:08,283 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-28 03:44:08,283 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 129 transitions, 1235 flow [2024-06-28 03:44:08,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:08,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:08,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:44:08,284 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:08,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1162693796, now seen corresponding path program 7 times [2024-06-28 03:44:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:08,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025495748] [2024-06-28 03:44:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025495748] [2024-06-28 03:44:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025495748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488655776] [2024-06-28 03:44:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:08,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:08,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 129 transitions, 1235 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:08,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:08,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:09,103 INFO L124 PetriNetUnfolderBase]: 371/654 cut-off events. [2024-06-28 03:44:09,104 INFO L125 PetriNetUnfolderBase]: For 28458/28458 co-relation queries the response was YES. [2024-06-28 03:44:09,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4343 conditions, 654 events. 371/654 cut-off events. For 28458/28458 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2779 event pairs, 65 based on Foata normal form. 4/657 useless extension candidates. Maximal degree in co-relation 4273. Up to 597 conditions per place. [2024-06-28 03:44:09,107 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 121 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2024-06-28 03:44:09,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 1725 flow [2024-06-28 03:44:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 03:44:09,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-28 03:44:09,108 INFO L175 Difference]: Start difference. First operand has 149 places, 129 transitions, 1235 flow. Second operand 9 states and 93 transitions. [2024-06-28 03:44:09,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 1725 flow [2024-06-28 03:44:09,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 1675 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:09,149 INFO L231 Difference]: Finished difference. Result has 151 places, 134 transitions, 1339 flow [2024-06-28 03:44:09,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1339, PETRI_PLACES=151, PETRI_TRANSITIONS=134} [2024-06-28 03:44:09,150 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-28 03:44:09,150 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 134 transitions, 1339 flow [2024-06-28 03:44:09,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:09,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:44:09,151 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:09,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1552626700, now seen corresponding path program 8 times [2024-06-28 03:44:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:09,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828911269] [2024-06-28 03:44:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:09,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828911269] [2024-06-28 03:44:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828911269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:09,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006957208] [2024-06-28 03:44:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:09,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:09,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:09,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 134 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:09,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:09,910 INFO L124 PetriNetUnfolderBase]: 403/707 cut-off events. [2024-06-28 03:44:09,910 INFO L125 PetriNetUnfolderBase]: For 33853/33853 co-relation queries the response was YES. [2024-06-28 03:44:09,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 707 events. 403/707 cut-off events. For 33853/33853 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3063 event pairs, 64 based on Foata normal form. 4/710 useless extension candidates. Maximal degree in co-relation 4895. Up to 472 conditions per place. [2024-06-28 03:44:09,914 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 106 selfloop transitions, 47 changer transitions 0/155 dead transitions. [2024-06-28 03:44:09,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 155 transitions, 2055 flow [2024-06-28 03:44:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:44:09,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:44:09,925 INFO L175 Difference]: Start difference. First operand has 151 places, 134 transitions, 1339 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:44:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 155 transitions, 2055 flow [2024-06-28 03:44:09,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 155 transitions, 1979 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:44:09,974 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 1475 flow [2024-06-28 03:44:09,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2024-06-28 03:44:09,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-28 03:44:09,974 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 1475 flow [2024-06-28 03:44:09,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:09,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:09,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:09,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:44:09,976 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:09,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2049114832, now seen corresponding path program 4 times [2024-06-28 03:44:09,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:09,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895395654] [2024-06-28 03:44:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:09,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:10,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895395654] [2024-06-28 03:44:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895395654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:10,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:10,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137623061] [2024-06-28 03:44:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:10,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:10,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:10,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:10,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:10,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 1475 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:10,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:10,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:10,998 INFO L124 PetriNetUnfolderBase]: 399/700 cut-off events. [2024-06-28 03:44:10,998 INFO L125 PetriNetUnfolderBase]: For 32163/32163 co-relation queries the response was YES. [2024-06-28 03:44:11,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4993 conditions, 700 events. 399/700 cut-off events. For 32163/32163 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3028 event pairs, 70 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 4920. Up to 657 conditions per place. [2024-06-28 03:44:11,003 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 125 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-06-28 03:44:11,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 147 transitions, 1783 flow [2024-06-28 03:44:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 03:44:11,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-28 03:44:11,004 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 1475 flow. Second operand 9 states and 88 transitions. [2024-06-28 03:44:11,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 147 transitions, 1783 flow [2024-06-28 03:44:11,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 147 transitions, 1649 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:11,055 INFO L231 Difference]: Finished difference. Result has 158 places, 139 transitions, 1386 flow [2024-06-28 03:44:11,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=158, PETRI_TRANSITIONS=139} [2024-06-28 03:44:11,055 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2024-06-28 03:44:11,055 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 139 transitions, 1386 flow [2024-06-28 03:44:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:11,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:11,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:11,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:44:11,056 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:11,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1154413076, now seen corresponding path program 9 times [2024-06-28 03:44:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050933574] [2024-06-28 03:44:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:11,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050933574] [2024-06-28 03:44:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050933574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:11,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:11,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062946745] [2024-06-28 03:44:11,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:11,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:11,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:11,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:11,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 139 transitions, 1386 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:11,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:11,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:11,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:11,817 INFO L124 PetriNetUnfolderBase]: 395/694 cut-off events. [2024-06-28 03:44:11,817 INFO L125 PetriNetUnfolderBase]: For 31886/31886 co-relation queries the response was YES. [2024-06-28 03:44:11,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4727 conditions, 694 events. 395/694 cut-off events. For 31886/31886 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2994 event pairs, 61 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 4653. Up to 467 conditions per place. [2024-06-28 03:44:11,821 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 53 changer transitions 0/156 dead transitions. [2024-06-28 03:44:11,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 156 transitions, 1974 flow [2024-06-28 03:44:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:44:11,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-28 03:44:11,822 INFO L175 Difference]: Start difference. First operand has 158 places, 139 transitions, 1386 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:44:11,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 156 transitions, 1974 flow [2024-06-28 03:44:11,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 156 transitions, 1914 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:11,870 INFO L231 Difference]: Finished difference. Result has 159 places, 141 transitions, 1489 flow [2024-06-28 03:44:11,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1489, PETRI_PLACES=159, PETRI_TRANSITIONS=141} [2024-06-28 03:44:11,871 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 03:44:11,871 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 141 transitions, 1489 flow [2024-06-28 03:44:11,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:11,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:11,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:11,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:44:11,871 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:11,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1324541100, now seen corresponding path program 4 times [2024-06-28 03:44:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:11,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236941649] [2024-06-28 03:44:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:11,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:12,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236941649] [2024-06-28 03:44:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236941649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:12,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:12,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346533432] [2024-06-28 03:44:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:12,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:12,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:12,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:12,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:12,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 141 transitions, 1489 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:12,789 INFO L124 PetriNetUnfolderBase]: 392/689 cut-off events. [2024-06-28 03:44:12,789 INFO L125 PetriNetUnfolderBase]: For 31463/31463 co-relation queries the response was YES. [2024-06-28 03:44:12,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 689 events. 392/689 cut-off events. For 31463/31463 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2974 event pairs, 65 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4687. Up to 575 conditions per place. [2024-06-28 03:44:12,794 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 112 selfloop transitions, 37 changer transitions 0/151 dead transitions. [2024-06-28 03:44:12,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 151 transitions, 1813 flow [2024-06-28 03:44:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:44:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:44:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 03:44:12,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:44:12,795 INFO L175 Difference]: Start difference. First operand has 159 places, 141 transitions, 1489 flow. Second operand 8 states and 85 transitions. [2024-06-28 03:44:12,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 151 transitions, 1813 flow [2024-06-28 03:44:12,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 1684 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:12,849 INFO L231 Difference]: Finished difference. Result has 161 places, 141 transitions, 1438 flow [2024-06-28 03:44:12,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1438, PETRI_PLACES=161, PETRI_TRANSITIONS=141} [2024-06-28 03:44:12,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-28 03:44:12,850 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 141 transitions, 1438 flow [2024-06-28 03:44:12,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:12,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:12,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:44:12,850 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:12,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1324546060, now seen corresponding path program 10 times [2024-06-28 03:44:12,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:12,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686347054] [2024-06-28 03:44:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:12,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686347054] [2024-06-28 03:44:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686347054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:13,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:13,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976571237] [2024-06-28 03:44:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:13,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:13,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:13,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 141 transitions, 1438 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:13,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:13,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:13,716 INFO L124 PetriNetUnfolderBase]: 393/691 cut-off events. [2024-06-28 03:44:13,716 INFO L125 PetriNetUnfolderBase]: For 31694/31694 co-relation queries the response was YES. [2024-06-28 03:44:13,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 691 events. 393/691 cut-off events. For 31694/31694 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2997 event pairs, 65 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4612. Up to 567 conditions per place. [2024-06-28 03:44:13,720 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 113 selfloop transitions, 40 changer transitions 0/155 dead transitions. [2024-06-28 03:44:13,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 155 transitions, 1832 flow [2024-06-28 03:44:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:44:13,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:44:13,721 INFO L175 Difference]: Start difference. First operand has 161 places, 141 transitions, 1438 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:44:13,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 155 transitions, 1832 flow [2024-06-28 03:44:13,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 1717 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:13,769 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 1466 flow [2024-06-28 03:44:13,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1466, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2024-06-28 03:44:13,769 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-28 03:44:13,769 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 1466 flow [2024-06-28 03:44:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:13,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:44:13,770 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:13,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1435087194, now seen corresponding path program 1 times [2024-06-28 03:44:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:13,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728179254] [2024-06-28 03:44:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:14,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728179254] [2024-06-28 03:44:14,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728179254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:14,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:14,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:14,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331771644] [2024-06-28 03:44:14,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:14,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:14,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:14,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 1466 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:14,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:14,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:14,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:14,836 INFO L124 PetriNetUnfolderBase]: 397/698 cut-off events. [2024-06-28 03:44:14,836 INFO L125 PetriNetUnfolderBase]: For 32827/32827 co-relation queries the response was YES. [2024-06-28 03:44:14,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4744 conditions, 698 events. 397/698 cut-off events. For 32827/32827 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3034 event pairs, 49 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4667. Up to 601 conditions per place. [2024-06-28 03:44:14,841 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 134 selfloop transitions, 23 changer transitions 0/159 dead transitions. [2024-06-28 03:44:14,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 159 transitions, 1834 flow [2024-06-28 03:44:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:44:14,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-28 03:44:14,841 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 1466 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:44:14,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 159 transitions, 1834 flow [2024-06-28 03:44:14,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 1707 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:14,903 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 1409 flow [2024-06-28 03:44:14,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1409, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2024-06-28 03:44:14,903 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 136 predicate places. [2024-06-28 03:44:14,903 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 1409 flow [2024-06-28 03:44:14,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:14,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:14,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:14,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:44:14,904 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:14,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 335045752, now seen corresponding path program 2 times [2024-06-28 03:44:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540708640] [2024-06-28 03:44:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:15,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540708640] [2024-06-28 03:44:15,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540708640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:15,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:15,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:15,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140130049] [2024-06-28 03:44:15,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:15,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:15,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:15,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:15,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 1409 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:15,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:15,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:15,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:15,940 INFO L124 PetriNetUnfolderBase]: 401/706 cut-off events. [2024-06-28 03:44:15,941 INFO L125 PetriNetUnfolderBase]: For 33854/33854 co-relation queries the response was YES. [2024-06-28 03:44:15,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 706 events. 401/706 cut-off events. For 33854/33854 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3086 event pairs, 58 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 4651. Up to 598 conditions per place. [2024-06-28 03:44:15,945 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 124 selfloop transitions, 34 changer transitions 0/160 dead transitions. [2024-06-28 03:44:15,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 160 transitions, 1783 flow [2024-06-28 03:44:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:44:15,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:44:15,946 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 1409 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:44:15,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 160 transitions, 1783 flow [2024-06-28 03:44:16,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 1723 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:16,008 INFO L231 Difference]: Finished difference. Result has 167 places, 145 transitions, 1443 flow [2024-06-28 03:44:16,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1443, PETRI_PLACES=167, PETRI_TRANSITIONS=145} [2024-06-28 03:44:16,008 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-28 03:44:16,008 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 145 transitions, 1443 flow [2024-06-28 03:44:16,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:16,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:16,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:44:16,009 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:16,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1030150386, now seen corresponding path program 3 times [2024-06-28 03:44:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319720069] [2024-06-28 03:44:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:16,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:16,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319720069] [2024-06-28 03:44:16,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319720069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:16,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:16,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075505792] [2024-06-28 03:44:16,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:16,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:16,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:16,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:16,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 145 transitions, 1443 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:16,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:16,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:16,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:17,161 INFO L124 PetriNetUnfolderBase]: 405/714 cut-off events. [2024-06-28 03:44:17,161 INFO L125 PetriNetUnfolderBase]: For 36024/36024 co-relation queries the response was YES. [2024-06-28 03:44:17,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4821 conditions, 714 events. 405/714 cut-off events. For 36024/36024 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3145 event pairs, 60 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4742. Up to 599 conditions per place. [2024-06-28 03:44:17,166 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 122 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-28 03:44:17,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 161 transitions, 1823 flow [2024-06-28 03:44:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:44:17,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:44:17,167 INFO L175 Difference]: Start difference. First operand has 167 places, 145 transitions, 1443 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:44:17,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 161 transitions, 1823 flow [2024-06-28 03:44:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 161 transitions, 1739 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:17,236 INFO L231 Difference]: Finished difference. Result has 169 places, 146 transitions, 1462 flow [2024-06-28 03:44:17,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=169, PETRI_TRANSITIONS=146} [2024-06-28 03:44:17,236 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-28 03:44:17,236 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 146 transitions, 1462 flow [2024-06-28 03:44:17,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:17,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:17,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:17,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:44:17,237 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:17,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash 418166517, now seen corresponding path program 1 times [2024-06-28 03:44:17,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:17,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323998218] [2024-06-28 03:44:17,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:17,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323998218] [2024-06-28 03:44:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323998218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018615590] [2024-06-28 03:44:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:17,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:17,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 146 transitions, 1462 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:17,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:17,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:17,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:18,194 INFO L124 PetriNetUnfolderBase]: 403/711 cut-off events. [2024-06-28 03:44:18,194 INFO L125 PetriNetUnfolderBase]: For 34907/34907 co-relation queries the response was YES. [2024-06-28 03:44:18,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 711 events. 403/711 cut-off events. For 34907/34907 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3135 event pairs, 59 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 4671. Up to 593 conditions per place. [2024-06-28 03:44:18,199 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 121 selfloop transitions, 40 changer transitions 0/163 dead transitions. [2024-06-28 03:44:18,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 163 transitions, 1884 flow [2024-06-28 03:44:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:18,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:44:18,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 03:44:18,200 INFO L175 Difference]: Start difference. First operand has 169 places, 146 transitions, 1462 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:44:18,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 163 transitions, 1884 flow [2024-06-28 03:44:18,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1793 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:18,267 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1521 flow [2024-06-28 03:44:18,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1521, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-28 03:44:18,267 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-28 03:44:18,267 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1521 flow [2024-06-28 03:44:18,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:18,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:18,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:44:18,268 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:18,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1026425364, now seen corresponding path program 1 times [2024-06-28 03:44:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884910307] [2024-06-28 03:44:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:19,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:19,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884910307] [2024-06-28 03:44:19,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884910307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:19,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:19,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:19,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679914730] [2024-06-28 03:44:19,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:19,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:19,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:19,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:19,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1521 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:19,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:19,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:19,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:19,401 INFO L124 PetriNetUnfolderBase]: 409/721 cut-off events. [2024-06-28 03:44:19,402 INFO L125 PetriNetUnfolderBase]: For 37452/37452 co-relation queries the response was YES. [2024-06-28 03:44:19,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 721 events. 409/721 cut-off events. For 37452/37452 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3194 event pairs, 57 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4770. Up to 614 conditions per place. [2024-06-28 03:44:19,405 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 33 changer transitions 0/166 dead transitions. [2024-06-28 03:44:19,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 166 transitions, 1953 flow [2024-06-28 03:44:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:44:19,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:44:19,406 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1521 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:44:19,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 166 transitions, 1953 flow [2024-06-28 03:44:19,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 166 transitions, 1829 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:19,476 INFO L231 Difference]: Finished difference. Result has 173 places, 150 transitions, 1521 flow [2024-06-28 03:44:19,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1521, PETRI_PLACES=173, PETRI_TRANSITIONS=150} [2024-06-28 03:44:19,476 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-28 03:44:19,476 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 150 transitions, 1521 flow [2024-06-28 03:44:19,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:19,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:19,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:19,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:44:19,477 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:19,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:19,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1747516492, now seen corresponding path program 4 times [2024-06-28 03:44:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:19,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815556752] [2024-06-28 03:44:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:19,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815556752] [2024-06-28 03:44:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815556752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:20,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:20,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838603683] [2024-06-28 03:44:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:20,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:20,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:20,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 150 transitions, 1521 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:20,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:20,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:20,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:20,635 INFO L124 PetriNetUnfolderBase]: 413/729 cut-off events. [2024-06-28 03:44:20,635 INFO L125 PetriNetUnfolderBase]: For 39165/39165 co-relation queries the response was YES. [2024-06-28 03:44:20,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 729 events. 413/729 cut-off events. For 39165/39165 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3233 event pairs, 60 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 4834. Up to 620 conditions per place. [2024-06-28 03:44:20,639 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 127 selfloop transitions, 36 changer transitions 0/165 dead transitions. [2024-06-28 03:44:20,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1909 flow [2024-06-28 03:44:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:44:20,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 03:44:20,640 INFO L175 Difference]: Start difference. First operand has 173 places, 150 transitions, 1521 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:44:20,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1909 flow [2024-06-28 03:44:20,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 1807 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:20,714 INFO L231 Difference]: Finished difference. Result has 175 places, 151 transitions, 1521 flow [2024-06-28 03:44:20,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1521, PETRI_PLACES=175, PETRI_TRANSITIONS=151} [2024-06-28 03:44:20,715 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-28 03:44:20,715 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 151 transitions, 1521 flow [2024-06-28 03:44:20,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:20,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:20,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:20,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:44:20,715 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:20,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1747520212, now seen corresponding path program 5 times [2024-06-28 03:44:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994783670] [2024-06-28 03:44:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:20,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:21,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:21,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994783670] [2024-06-28 03:44:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994783670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:21,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:21,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929140249] [2024-06-28 03:44:21,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:21,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:21,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:21,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 151 transitions, 1521 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:21,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:21,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:21,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:21,746 INFO L124 PetriNetUnfolderBase]: 417/737 cut-off events. [2024-06-28 03:44:21,746 INFO L125 PetriNetUnfolderBase]: For 40692/40692 co-relation queries the response was YES. [2024-06-28 03:44:21,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 737 events. 417/737 cut-off events. For 40692/40692 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3296 event pairs, 58 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 4887. Up to 628 conditions per place. [2024-06-28 03:44:21,751 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 129 selfloop transitions, 35 changer transitions 0/166 dead transitions. [2024-06-28 03:44:21,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 166 transitions, 1911 flow [2024-06-28 03:44:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:44:21,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:44:21,752 INFO L175 Difference]: Start difference. First operand has 175 places, 151 transitions, 1521 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:44:21,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 166 transitions, 1911 flow [2024-06-28 03:44:21,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 166 transitions, 1819 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:21,827 INFO L231 Difference]: Finished difference. Result has 177 places, 152 transitions, 1531 flow [2024-06-28 03:44:21,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=177, PETRI_TRANSITIONS=152} [2024-06-28 03:44:21,828 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-28 03:44:21,828 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 152 transitions, 1531 flow [2024-06-28 03:44:21,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:21,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:21,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:21,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:44:21,828 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:21,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1742009962, now seen corresponding path program 6 times [2024-06-28 03:44:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758034725] [2024-06-28 03:44:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:21,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:22,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:22,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758034725] [2024-06-28 03:44:22,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758034725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:22,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:22,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160606525] [2024-06-28 03:44:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:22,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:22,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:22,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 152 transitions, 1531 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:22,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:22,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:22,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:22,795 INFO L124 PetriNetUnfolderBase]: 421/745 cut-off events. [2024-06-28 03:44:22,796 INFO L125 PetriNetUnfolderBase]: For 42311/42311 co-relation queries the response was YES. [2024-06-28 03:44:22,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5031 conditions, 745 events. 421/745 cut-off events. For 42311/42311 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3334 event pairs, 67 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4947. Up to 703 conditions per place. [2024-06-28 03:44:22,801 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 146 selfloop transitions, 17 changer transitions 0/165 dead transitions. [2024-06-28 03:44:22,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 165 transitions, 1915 flow [2024-06-28 03:44:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 03:44:22,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:44:22,802 INFO L175 Difference]: Start difference. First operand has 177 places, 152 transitions, 1531 flow. Second operand 9 states and 90 transitions. [2024-06-28 03:44:22,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 165 transitions, 1915 flow [2024-06-28 03:44:22,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 165 transitions, 1823 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:22,875 INFO L231 Difference]: Finished difference. Result has 179 places, 153 transitions, 1507 flow [2024-06-28 03:44:22,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1507, PETRI_PLACES=179, PETRI_TRANSITIONS=153} [2024-06-28 03:44:22,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-28 03:44:22,876 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 153 transitions, 1507 flow [2024-06-28 03:44:22,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:22,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:22,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:44:22,876 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:22,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1747366390, now seen corresponding path program 2 times [2024-06-28 03:44:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304583700] [2024-06-28 03:44:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:23,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304583700] [2024-06-28 03:44:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304583700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:23,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:23,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:23,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756802224] [2024-06-28 03:44:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:23,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:23,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 153 transitions, 1507 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:23,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:23,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:23,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:24,058 INFO L124 PetriNetUnfolderBase]: 427/755 cut-off events. [2024-06-28 03:44:24,058 INFO L125 PetriNetUnfolderBase]: For 43747/43747 co-relation queries the response was YES. [2024-06-28 03:44:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 755 events. 427/755 cut-off events. For 43747/43747 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3396 event pairs, 60 based on Foata normal form. 2/756 useless extension candidates. Maximal degree in co-relation 4976. Up to 636 conditions per place. [2024-06-28 03:44:24,063 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 130 selfloop transitions, 39 changer transitions 0/171 dead transitions. [2024-06-28 03:44:24,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 171 transitions, 1943 flow [2024-06-28 03:44:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:44:24,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:44:24,064 INFO L175 Difference]: Start difference. First operand has 179 places, 153 transitions, 1507 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:44:24,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 171 transitions, 1943 flow [2024-06-28 03:44:24,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 171 transitions, 1885 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:24,149 INFO L231 Difference]: Finished difference. Result has 182 places, 155 transitions, 1588 flow [2024-06-28 03:44:24,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1588, PETRI_PLACES=182, PETRI_TRANSITIONS=155} [2024-06-28 03:44:24,149 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-28 03:44:24,149 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 155 transitions, 1588 flow [2024-06-28 03:44:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:44:24,149 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:24,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1741802200, now seen corresponding path program 3 times [2024-06-28 03:44:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302878729] [2024-06-28 03:44:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:24,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:24,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302878729] [2024-06-28 03:44:24,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302878729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:24,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:24,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:24,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156077431] [2024-06-28 03:44:24,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:24,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:24,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:24,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 155 transitions, 1588 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:24,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:24,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:24,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:25,125 INFO L124 PetriNetUnfolderBase]: 433/765 cut-off events. [2024-06-28 03:44:25,125 INFO L125 PetriNetUnfolderBase]: For 45133/45133 co-relation queries the response was YES. [2024-06-28 03:44:25,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5184 conditions, 765 events. 433/765 cut-off events. For 45133/45133 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3456 event pairs, 66 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 5098. Up to 684 conditions per place. [2024-06-28 03:44:25,129 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 145 selfloop transitions, 26 changer transitions 0/173 dead transitions. [2024-06-28 03:44:25,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 173 transitions, 2122 flow [2024-06-28 03:44:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:44:25,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:44:25,132 INFO L175 Difference]: Start difference. First operand has 182 places, 155 transitions, 1588 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:44:25,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 173 transitions, 2122 flow [2024-06-28 03:44:25,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 1999 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:25,217 INFO L231 Difference]: Finished difference. Result has 184 places, 157 transitions, 1560 flow [2024-06-28 03:44:25,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1560, PETRI_PLACES=184, PETRI_TRANSITIONS=157} [2024-06-28 03:44:25,217 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-28 03:44:25,217 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 157 transitions, 1560 flow [2024-06-28 03:44:25,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:25,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:25,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:44:25,218 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:25,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:25,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1742004010, now seen corresponding path program 4 times [2024-06-28 03:44:25,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:25,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041917400] [2024-06-28 03:44:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:25,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:25,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041917400] [2024-06-28 03:44:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041917400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:25,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:25,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218265845] [2024-06-28 03:44:25,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:25,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:25,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 157 transitions, 1560 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:25,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:25,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:26,183 INFO L124 PetriNetUnfolderBase]: 429/759 cut-off events. [2024-06-28 03:44:26,183 INFO L125 PetriNetUnfolderBase]: For 43122/43122 co-relation queries the response was YES. [2024-06-28 03:44:26,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 759 events. 429/759 cut-off events. For 43122/43122 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3431 event pairs, 66 based on Foata normal form. 2/760 useless extension candidates. Maximal degree in co-relation 4899. Up to 681 conditions per place. [2024-06-28 03:44:26,188 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 143 selfloop transitions, 27 changer transitions 0/172 dead transitions. [2024-06-28 03:44:26,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 172 transitions, 1942 flow [2024-06-28 03:44:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:44:26,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:44:26,189 INFO L175 Difference]: Start difference. First operand has 184 places, 157 transitions, 1560 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:44:26,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 172 transitions, 1942 flow [2024-06-28 03:44:26,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 172 transitions, 1840 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:26,276 INFO L231 Difference]: Finished difference. Result has 186 places, 157 transitions, 1517 flow [2024-06-28 03:44:26,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1517, PETRI_PLACES=186, PETRI_TRANSITIONS=157} [2024-06-28 03:44:26,277 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-28 03:44:26,277 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 157 transitions, 1517 flow [2024-06-28 03:44:26,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:26,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:26,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:26,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:44:26,277 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:26,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:26,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1741794481, now seen corresponding path program 1 times [2024-06-28 03:44:26,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:26,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739909869] [2024-06-28 03:44:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:26,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:27,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739909869] [2024-06-28 03:44:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739909869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:27,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:27,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340561459] [2024-06-28 03:44:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:27,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:27,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:27,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:27,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:27,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 157 transitions, 1517 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:27,337 INFO L124 PetriNetUnfolderBase]: 433/767 cut-off events. [2024-06-28 03:44:27,338 INFO L125 PetriNetUnfolderBase]: For 44412/44412 co-relation queries the response was YES. [2024-06-28 03:44:27,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 767 events. 433/767 cut-off events. For 44412/44412 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3473 event pairs, 72 based on Foata normal form. 2/768 useless extension candidates. Maximal degree in co-relation 4925. Up to 725 conditions per place. [2024-06-28 03:44:27,342 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 149 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2024-06-28 03:44:27,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 170 transitions, 1899 flow [2024-06-28 03:44:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 03:44:27,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3233333333333333 [2024-06-28 03:44:27,343 INFO L175 Difference]: Start difference. First operand has 186 places, 157 transitions, 1517 flow. Second operand 10 states and 97 transitions. [2024-06-28 03:44:27,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 170 transitions, 1899 flow [2024-06-28 03:44:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 170 transitions, 1827 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:27,437 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 1507 flow [2024-06-28 03:44:27,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1507, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2024-06-28 03:44:27,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-28 03:44:27,437 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 1507 flow [2024-06-28 03:44:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:27,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:27,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:27,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:44:27,438 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:27,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1143296667, now seen corresponding path program 2 times [2024-06-28 03:44:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737938381] [2024-06-28 03:44:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:28,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:28,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737938381] [2024-06-28 03:44:28,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737938381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:28,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881750804] [2024-06-28 03:44:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:28,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:28,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:28,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:28,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 1507 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:28,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:29,105 INFO L124 PetriNetUnfolderBase]: 437/775 cut-off events. [2024-06-28 03:44:29,106 INFO L125 PetriNetUnfolderBase]: For 45980/45980 co-relation queries the response was YES. [2024-06-28 03:44:29,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 775 events. 437/775 cut-off events. For 45980/45980 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3520 event pairs, 81 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 4967. Up to 743 conditions per place. [2024-06-28 03:44:29,110 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 151 selfloop transitions, 16 changer transitions 0/169 dead transitions. [2024-06-28 03:44:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 169 transitions, 1883 flow [2024-06-28 03:44:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-28 03:44:29,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31333333333333335 [2024-06-28 03:44:29,111 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 1507 flow. Second operand 10 states and 94 transitions. [2024-06-28 03:44:29,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 169 transitions, 1883 flow [2024-06-28 03:44:29,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 169 transitions, 1831 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:29,201 INFO L231 Difference]: Finished difference. Result has 188 places, 159 transitions, 1513 flow [2024-06-28 03:44:29,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1513, PETRI_PLACES=188, PETRI_TRANSITIONS=159} [2024-06-28 03:44:29,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 03:44:29,201 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 159 transitions, 1513 flow [2024-06-28 03:44:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:29,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:29,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:29,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:44:29,202 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:29,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1143288948, now seen corresponding path program 5 times [2024-06-28 03:44:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758266806] [2024-06-28 03:44:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:30,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758266806] [2024-06-28 03:44:30,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758266806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:30,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:30,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60348357] [2024-06-28 03:44:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:30,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:30,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 159 transitions, 1513 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:30,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:30,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:30,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:31,156 INFO L124 PetriNetUnfolderBase]: 433/769 cut-off events. [2024-06-28 03:44:31,156 INFO L125 PetriNetUnfolderBase]: For 43931/43931 co-relation queries the response was YES. [2024-06-28 03:44:31,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4904 conditions, 769 events. 433/769 cut-off events. For 43931/43931 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3516 event pairs, 76 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 4814. Up to 715 conditions per place. [2024-06-28 03:44:31,161 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 146 selfloop transitions, 22 changer transitions 0/170 dead transitions. [2024-06-28 03:44:31,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 170 transitions, 1877 flow [2024-06-28 03:44:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:44:31,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-28 03:44:31,161 INFO L175 Difference]: Start difference. First operand has 188 places, 159 transitions, 1513 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:44:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 170 transitions, 1877 flow [2024-06-28 03:44:31,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 170 transitions, 1805 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:31,258 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 1490 flow [2024-06-28 03:44:31,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1490, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2024-06-28 03:44:31,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-28 03:44:31,259 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 1490 flow [2024-06-28 03:44:31,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:31,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:31,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:31,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:44:31,259 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:31,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:31,260 INFO L85 PathProgramCache]: Analyzing trace with hash 886580676, now seen corresponding path program 7 times [2024-06-28 03:44:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:31,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776385537] [2024-06-28 03:44:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:31,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:31,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:31,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776385537] [2024-06-28 03:44:31,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776385537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:31,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125445595] [2024-06-28 03:44:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:31,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:31,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:32,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:32,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 1490 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:32,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:32,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:32,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:32,241 INFO L124 PetriNetUnfolderBase]: 437/777 cut-off events. [2024-06-28 03:44:32,241 INFO L125 PetriNetUnfolderBase]: For 45466/45466 co-relation queries the response was YES. [2024-06-28 03:44:32,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 777 events. 437/777 cut-off events. For 45466/45466 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3573 event pairs, 70 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 4872. Up to 708 conditions per place. [2024-06-28 03:44:32,246 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 143 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2024-06-28 03:44:32,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 171 transitions, 1886 flow [2024-06-28 03:44:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:44:32,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-28 03:44:32,257 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 1490 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:44:32,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 171 transitions, 1886 flow [2024-06-28 03:44:32,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 171 transitions, 1833 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:32,354 INFO L231 Difference]: Finished difference. Result has 190 places, 160 transitions, 1525 flow [2024-06-28 03:44:32,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1525, PETRI_PLACES=190, PETRI_TRANSITIONS=160} [2024-06-28 03:44:32,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-28 03:44:32,354 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 160 transitions, 1525 flow [2024-06-28 03:44:32,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:32,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:32,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:32,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:44:32,355 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:32,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1152819867, now seen corresponding path program 3 times [2024-06-28 03:44:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:32,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661436013] [2024-06-28 03:44:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661436013] [2024-06-28 03:44:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661436013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:33,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264430869] [2024-06-28 03:44:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:33,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:33,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 160 transitions, 1525 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:33,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:33,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:33,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:33,590 INFO L124 PetriNetUnfolderBase]: 448/798 cut-off events. [2024-06-28 03:44:33,590 INFO L125 PetriNetUnfolderBase]: For 51141/51141 co-relation queries the response was YES. [2024-06-28 03:44:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5261 conditions, 798 events. 448/798 cut-off events. For 51141/51141 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3713 event pairs, 79 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 5169. Up to 737 conditions per place. [2024-06-28 03:44:33,596 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 151 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2024-06-28 03:44:33,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 175 transitions, 2065 flow [2024-06-28 03:44:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:44:33,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-28 03:44:33,597 INFO L175 Difference]: Start difference. First operand has 190 places, 160 transitions, 1525 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:44:33,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 175 transitions, 2065 flow [2024-06-28 03:44:33,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 175 transitions, 1987 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:33,700 INFO L231 Difference]: Finished difference. Result has 194 places, 162 transitions, 1541 flow [2024-06-28 03:44:33,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1541, PETRI_PLACES=194, PETRI_TRANSITIONS=162} [2024-06-28 03:44:33,701 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-28 03:44:33,701 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 162 transitions, 1541 flow [2024-06-28 03:44:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:33,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:33,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:33,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:44:33,702 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:33,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:33,702 INFO L85 PathProgramCache]: Analyzing trace with hash 886586628, now seen corresponding path program 6 times [2024-06-28 03:44:33,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:33,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490029518] [2024-06-28 03:44:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:33,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:34,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:34,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490029518] [2024-06-28 03:44:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490029518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:34,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:34,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:34,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568202660] [2024-06-28 03:44:34,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:34,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:34,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:34,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:35,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:35,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 162 transitions, 1541 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:35,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:35,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:35,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:35,460 INFO L124 PetriNetUnfolderBase]: 454/808 cut-off events. [2024-06-28 03:44:35,460 INFO L125 PetriNetUnfolderBase]: For 52546/52546 co-relation queries the response was YES. [2024-06-28 03:44:35,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 808 events. 454/808 cut-off events. For 52546/52546 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3769 event pairs, 70 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 5212. Up to 580 conditions per place. [2024-06-28 03:44:35,465 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 122 selfloop transitions, 57 changer transitions 0/181 dead transitions. [2024-06-28 03:44:35,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 181 transitions, 2261 flow [2024-06-28 03:44:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:44:35,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-28 03:44:35,467 INFO L175 Difference]: Start difference. First operand has 194 places, 162 transitions, 1541 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:44:35,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 181 transitions, 2261 flow [2024-06-28 03:44:35,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 181 transitions, 2212 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:35,575 INFO L231 Difference]: Finished difference. Result has 197 places, 164 transitions, 1655 flow [2024-06-28 03:44:35,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1655, PETRI_PLACES=197, PETRI_TRANSITIONS=164} [2024-06-28 03:44:35,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-28 03:44:35,575 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 164 transitions, 1655 flow [2024-06-28 03:44:35,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:35,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:35,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:35,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:44:35,576 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:35,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1883387678, now seen corresponding path program 8 times [2024-06-28 03:44:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627604460] [2024-06-28 03:44:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:36,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:36,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627604460] [2024-06-28 03:44:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627604460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:36,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:44:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67706640] [2024-06-28 03:44:36,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:44:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:44:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:44:36,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:36,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 164 transitions, 1655 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:36,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:36,534 INFO L124 PetriNetUnfolderBase]: 458/817 cut-off events. [2024-06-28 03:44:36,534 INFO L125 PetriNetUnfolderBase]: For 54683/54683 co-relation queries the response was YES. [2024-06-28 03:44:36,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5506 conditions, 817 events. 458/817 cut-off events. For 54683/54683 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3844 event pairs, 77 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5411. Up to 768 conditions per place. [2024-06-28 03:44:36,540 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 154 selfloop transitions, 19 changer transitions 0/175 dead transitions. [2024-06-28 03:44:36,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 175 transitions, 2057 flow [2024-06-28 03:44:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:44:36,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-28 03:44:36,542 INFO L175 Difference]: Start difference. First operand has 197 places, 164 transitions, 1655 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:44:36,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 175 transitions, 2057 flow [2024-06-28 03:44:36,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 175 transitions, 1909 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:36,648 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1583 flow [2024-06-28 03:44:36,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1583, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2024-06-28 03:44:36,649 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-28 03:44:36,649 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1583 flow [2024-06-28 03:44:36,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:36,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:44:36,649 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:36,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1141342123, now seen corresponding path program 4 times [2024-06-28 03:44:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:36,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100327947] [2024-06-28 03:44:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100327947] [2024-06-28 03:44:37,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100327947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:37,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:37,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776778880] [2024-06-28 03:44:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:37,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:37,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:37,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:37,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:37,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:37,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 165 transitions, 1583 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:37,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:37,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:37,833 INFO L124 PetriNetUnfolderBase]: 455/811 cut-off events. [2024-06-28 03:44:37,833 INFO L125 PetriNetUnfolderBase]: For 51793/51793 co-relation queries the response was YES. [2024-06-28 03:44:37,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5226 conditions, 811 events. 455/811 cut-off events. For 51793/51793 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3810 event pairs, 82 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 5130. Up to 767 conditions per place. [2024-06-28 03:44:37,838 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 153 selfloop transitions, 21 changer transitions 0/176 dead transitions. [2024-06-28 03:44:37,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 176 transitions, 1955 flow [2024-06-28 03:44:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 03:44:37,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-28 03:44:37,839 INFO L175 Difference]: Start difference. First operand has 198 places, 165 transitions, 1583 flow. Second operand 11 states and 102 transitions. [2024-06-28 03:44:37,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 176 transitions, 1955 flow [2024-06-28 03:44:37,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 1875 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:37,940 INFO L231 Difference]: Finished difference. Result has 202 places, 165 transitions, 1551 flow [2024-06-28 03:44:37,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1551, PETRI_PLACES=202, PETRI_TRANSITIONS=165} [2024-06-28 03:44:37,941 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 03:44:37,941 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 165 transitions, 1551 flow [2024-06-28 03:44:37,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:37,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:37,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:44:37,941 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:37,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1342900372, now seen corresponding path program 7 times [2024-06-28 03:44:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:37,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875756911] [2024-06-28 03:44:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875756911] [2024-06-28 03:44:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875756911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:39,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:39,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995719069] [2024-06-28 03:44:39,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:39,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:39,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:39,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:39,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:39,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 165 transitions, 1551 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:39,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:39,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:39,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:39,413 INFO L124 PetriNetUnfolderBase]: 461/822 cut-off events. [2024-06-28 03:44:39,413 INFO L125 PetriNetUnfolderBase]: For 52783/52783 co-relation queries the response was YES. [2024-06-28 03:44:39,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 822 events. 461/822 cut-off events. For 52783/52783 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3886 event pairs, 73 based on Foata normal form. 2/823 useless extension candidates. Maximal degree in co-relation 5142. Up to 734 conditions per place. [2024-06-28 03:44:39,418 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 150 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-06-28 03:44:39,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 181 transitions, 2115 flow [2024-06-28 03:44:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:44:39,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:44:39,419 INFO L175 Difference]: Start difference. First operand has 202 places, 165 transitions, 1551 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:44:39,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 181 transitions, 2115 flow [2024-06-28 03:44:39,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 181 transitions, 2071 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:39,531 INFO L231 Difference]: Finished difference. Result has 202 places, 167 transitions, 1608 flow [2024-06-28 03:44:39,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1608, PETRI_PLACES=202, PETRI_TRANSITIONS=167} [2024-06-28 03:44:39,532 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 03:44:39,532 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 167 transitions, 1608 flow [2024-06-28 03:44:39,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:39,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:44:39,532 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:39,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -901948623, now seen corresponding path program 5 times [2024-06-28 03:44:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286303079] [2024-06-28 03:44:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:40,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286303079] [2024-06-28 03:44:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286303079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322495980] [2024-06-28 03:44:40,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:40,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:40,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:40,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:40,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:40,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 167 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:40,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:40,631 INFO L124 PetriNetUnfolderBase]: 465/830 cut-off events. [2024-06-28 03:44:40,632 INFO L125 PetriNetUnfolderBase]: For 54721/54721 co-relation queries the response was YES. [2024-06-28 03:44:40,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5356 conditions, 830 events. 465/830 cut-off events. For 54721/54721 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3942 event pairs, 80 based on Foata normal form. 2/831 useless extension candidates. Maximal degree in co-relation 5258. Up to 781 conditions per place. [2024-06-28 03:44:40,637 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 155 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-28 03:44:40,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 178 transitions, 2006 flow [2024-06-28 03:44:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:44:40,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-28 03:44:40,639 INFO L175 Difference]: Start difference. First operand has 202 places, 167 transitions, 1608 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:44:40,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 178 transitions, 2006 flow [2024-06-28 03:44:40,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 178 transitions, 1922 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:40,728 INFO L231 Difference]: Finished difference. Result has 204 places, 168 transitions, 1596 flow [2024-06-28 03:44:40,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=204, PETRI_TRANSITIONS=168} [2024-06-28 03:44:40,729 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-28 03:44:40,729 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 168 transitions, 1596 flow [2024-06-28 03:44:40,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:40,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:40,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:44:40,730 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:40,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1342698562, now seen corresponding path program 8 times [2024-06-28 03:44:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:40,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506654163] [2024-06-28 03:44:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506654163] [2024-06-28 03:44:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506654163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:41,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135322565] [2024-06-28 03:44:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:41,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:41,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:41,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 168 transitions, 1596 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:41,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:41,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:42,186 INFO L124 PetriNetUnfolderBase]: 461/824 cut-off events. [2024-06-28 03:44:42,186 INFO L125 PetriNetUnfolderBase]: For 51641/51641 co-relation queries the response was YES. [2024-06-28 03:44:42,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5160 conditions, 824 events. 461/824 cut-off events. For 51641/51641 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3892 event pairs, 73 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 5061. Up to 739 conditions per place. [2024-06-28 03:44:42,192 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 151 selfloop transitions, 28 changer transitions 0/181 dead transitions. [2024-06-28 03:44:42,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 181 transitions, 1990 flow [2024-06-28 03:44:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:44:42,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:44:42,193 INFO L175 Difference]: Start difference. First operand has 204 places, 168 transitions, 1596 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:44:42,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 181 transitions, 1990 flow [2024-06-28 03:44:42,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 181 transitions, 1904 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:42,300 INFO L231 Difference]: Finished difference. Result has 206 places, 168 transitions, 1571 flow [2024-06-28 03:44:42,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1571, PETRI_PLACES=206, PETRI_TRANSITIONS=168} [2024-06-28 03:44:42,301 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-28 03:44:42,301 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 168 transitions, 1571 flow [2024-06-28 03:44:42,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:42,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:42,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:42,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:44:42,301 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:42,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1348412854, now seen corresponding path program 9 times [2024-06-28 03:44:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323023563] [2024-06-28 03:44:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:43,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323023563] [2024-06-28 03:44:43,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323023563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:43,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:43,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:43,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946653145] [2024-06-28 03:44:43,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:43,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:43,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:43,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:43,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 168 transitions, 1571 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:43,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:43,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:43,395 INFO L124 PetriNetUnfolderBase]: 465/832 cut-off events. [2024-06-28 03:44:43,395 INFO L125 PetriNetUnfolderBase]: For 53223/53223 co-relation queries the response was YES. [2024-06-28 03:44:43,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 832 events. 465/832 cut-off events. For 53223/53223 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3952 event pairs, 72 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 5123. Up to 710 conditions per place. [2024-06-28 03:44:43,400 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 140 selfloop transitions, 39 changer transitions 0/181 dead transitions. [2024-06-28 03:44:43,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 181 transitions, 1995 flow [2024-06-28 03:44:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:44:43,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:44:43,401 INFO L175 Difference]: Start difference. First operand has 206 places, 168 transitions, 1571 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:44:43,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 181 transitions, 1995 flow [2024-06-28 03:44:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 181 transitions, 1921 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:43,506 INFO L231 Difference]: Finished difference. Result has 205 places, 169 transitions, 1615 flow [2024-06-28 03:44:43,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=205, PETRI_TRANSITIONS=169} [2024-06-28 03:44:43,506 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-28 03:44:43,506 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 169 transitions, 1615 flow [2024-06-28 03:44:43,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:43,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:43,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:43,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:44:43,507 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:43,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1305881468, now seen corresponding path program 10 times [2024-06-28 03:44:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835832433] [2024-06-28 03:44:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:44,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:44,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835832433] [2024-06-28 03:44:44,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835832433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:44,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:44,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292619616] [2024-06-28 03:44:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:44,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:44,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:44,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 169 transitions, 1615 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:44,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:44,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:44,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:44,585 INFO L124 PetriNetUnfolderBase]: 462/827 cut-off events. [2024-06-28 03:44:44,586 INFO L125 PetriNetUnfolderBase]: For 50092/50092 co-relation queries the response was YES. [2024-06-28 03:44:44,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5081 conditions, 827 events. 462/827 cut-off events. For 50092/50092 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3932 event pairs, 69 based on Foata normal form. 2/828 useless extension candidates. Maximal degree in co-relation 4980. Up to 705 conditions per place. [2024-06-28 03:44:44,591 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 141 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-28 03:44:44,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 181 transitions, 2003 flow [2024-06-28 03:44:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 03:44:44,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-28 03:44:44,592 INFO L175 Difference]: Start difference. First operand has 205 places, 169 transitions, 1615 flow. Second operand 9 states and 93 transitions. [2024-06-28 03:44:44,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 181 transitions, 2003 flow [2024-06-28 03:44:44,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 181 transitions, 1895 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:44,682 INFO L231 Difference]: Finished difference. Result has 207 places, 169 transitions, 1587 flow [2024-06-28 03:44:44,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1587, PETRI_PLACES=207, PETRI_TRANSITIONS=169} [2024-06-28 03:44:44,682 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-28 03:44:44,682 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 169 transitions, 1587 flow [2024-06-28 03:44:44,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:44,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:44,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:44,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:44:44,683 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:44,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:44,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1148759152, now seen corresponding path program 9 times [2024-06-28 03:44:44,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:44,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852889844] [2024-06-28 03:44:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:44,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:45,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:45,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852889844] [2024-06-28 03:44:45,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852889844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:45,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:45,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088861282] [2024-06-28 03:44:45,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:45,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:45,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:45,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 169 transitions, 1587 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:45,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:45,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:45,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:46,208 INFO L124 PetriNetUnfolderBase]: 458/821 cut-off events. [2024-06-28 03:44:46,208 INFO L125 PetriNetUnfolderBase]: For 46067/46067 co-relation queries the response was YES. [2024-06-28 03:44:46,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4863 conditions, 821 events. 458/821 cut-off events. For 46067/46067 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3900 event pairs, 73 based on Foata normal form. 2/822 useless extension candidates. Maximal degree in co-relation 4761. Up to 594 conditions per place. [2024-06-28 03:44:46,213 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 128 selfloop transitions, 54 changer transitions 0/184 dead transitions. [2024-06-28 03:44:46,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 184 transitions, 2017 flow [2024-06-28 03:44:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:44:46,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-28 03:44:46,214 INFO L175 Difference]: Start difference. First operand has 207 places, 169 transitions, 1587 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:44:46,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 184 transitions, 2017 flow [2024-06-28 03:44:46,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 184 transitions, 1853 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:46,317 INFO L231 Difference]: Finished difference. Result has 209 places, 169 transitions, 1536 flow [2024-06-28 03:44:46,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1536, PETRI_PLACES=209, PETRI_TRANSITIONS=169} [2024-06-28 03:44:46,318 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-28 03:44:46,318 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 169 transitions, 1536 flow [2024-06-28 03:44:46,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:46,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:46,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:46,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:44:46,318 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:46,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1348262752, now seen corresponding path program 10 times [2024-06-28 03:44:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508780792] [2024-06-28 03:44:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508780792] [2024-06-28 03:44:47,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508780792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:47,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:47,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:47,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28778822] [2024-06-28 03:44:47,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:47,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:47,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:47,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 169 transitions, 1536 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:47,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:47,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:47,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:47,311 INFO L124 PetriNetUnfolderBase]: 459/823 cut-off events. [2024-06-28 03:44:47,312 INFO L125 PetriNetUnfolderBase]: For 44424/44424 co-relation queries the response was YES. [2024-06-28 03:44:47,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4782 conditions, 823 events. 459/823 cut-off events. For 44424/44424 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3921 event pairs, 70 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 4679. Up to 691 conditions per place. [2024-06-28 03:44:47,317 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 141 selfloop transitions, 42 changer transitions 0/185 dead transitions. [2024-06-28 03:44:47,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 1998 flow [2024-06-28 03:44:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:44:47,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:44:47,317 INFO L175 Difference]: Start difference. First operand has 209 places, 169 transitions, 1536 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:44:47,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 1998 flow [2024-06-28 03:44:47,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 185 transitions, 1837 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:47,412 INFO L231 Difference]: Finished difference. Result has 208 places, 171 transitions, 1524 flow [2024-06-28 03:44:47,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1524, PETRI_PLACES=208, PETRI_TRANSITIONS=171} [2024-06-28 03:44:47,412 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-28 03:44:47,412 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 171 transitions, 1524 flow [2024-06-28 03:44:47,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:47,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:47,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:47,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:44:47,413 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:47,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1148751433, now seen corresponding path program 6 times [2024-06-28 03:44:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:47,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72962240] [2024-06-28 03:44:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:47,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:48,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:48,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72962240] [2024-06-28 03:44:48,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72962240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:48,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:44:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618804621] [2024-06-28 03:44:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:44:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:44:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:44:48,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:48,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 171 transitions, 1524 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:48,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:48,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:48,745 INFO L124 PetriNetUnfolderBase]: 456/818 cut-off events. [2024-06-28 03:44:48,745 INFO L125 PetriNetUnfolderBase]: For 40323/40323 co-relation queries the response was YES. [2024-06-28 03:44:48,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4530 conditions, 818 events. 456/818 cut-off events. For 40323/40323 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3894 event pairs, 80 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 4427. Up to 733 conditions per place. [2024-06-28 03:44:48,751 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 144 selfloop transitions, 35 changer transitions 0/181 dead transitions. [2024-06-28 03:44:48,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 1928 flow [2024-06-28 03:44:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:44:48,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-28 03:44:48,752 INFO L175 Difference]: Start difference. First operand has 208 places, 171 transitions, 1524 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:44:48,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 1928 flow [2024-06-28 03:44:48,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 181 transitions, 1785 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:48,849 INFO L231 Difference]: Finished difference. Result has 209 places, 171 transitions, 1457 flow [2024-06-28 03:44:48,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1457, PETRI_PLACES=209, PETRI_TRANSITIONS=171} [2024-06-28 03:44:48,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-28 03:44:48,850 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 171 transitions, 1457 flow [2024-06-28 03:44:48,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:48,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:48,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:48,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:44:48,851 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:48,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash 196812783, now seen corresponding path program 1 times [2024-06-28 03:44:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:48,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963579138] [2024-06-28 03:44:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:48,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963579138] [2024-06-28 03:44:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963579138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:49,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:49,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898637343] [2024-06-28 03:44:49,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:49,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:49,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 171 transitions, 1457 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:49,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:49,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:49,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:49,916 INFO L124 PetriNetUnfolderBase]: 460/825 cut-off events. [2024-06-28 03:44:49,917 INFO L125 PetriNetUnfolderBase]: For 39945/39945 co-relation queries the response was YES. [2024-06-28 03:44:49,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4486 conditions, 825 events. 460/825 cut-off events. For 39945/39945 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3930 event pairs, 60 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 4382. Up to 720 conditions per place. [2024-06-28 03:44:49,922 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 163 selfloop transitions, 24 changer transitions 0/189 dead transitions. [2024-06-28 03:44:49,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 189 transitions, 1895 flow [2024-06-28 03:44:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:44:49,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:44:49,923 INFO L175 Difference]: Start difference. First operand has 209 places, 171 transitions, 1457 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:44:49,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 189 transitions, 1895 flow [2024-06-28 03:44:50,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 189 transitions, 1765 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:50,018 INFO L231 Difference]: Finished difference. Result has 210 places, 172 transitions, 1405 flow [2024-06-28 03:44:50,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1405, PETRI_PLACES=210, PETRI_TRANSITIONS=172} [2024-06-28 03:44:50,018 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-28 03:44:50,019 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 172 transitions, 1405 flow [2024-06-28 03:44:50,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:50,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:50,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:44:50,019 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -151546225, now seen corresponding path program 2 times [2024-06-28 03:44:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667655083] [2024-06-28 03:44:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667655083] [2024-06-28 03:44:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667655083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:50,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760479866] [2024-06-28 03:44:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:50,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:50,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:50,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:50,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 172 transitions, 1405 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:50,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:50,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:51,191 INFO L124 PetriNetUnfolderBase]: 471/846 cut-off events. [2024-06-28 03:44:51,192 INFO L125 PetriNetUnfolderBase]: For 46536/46536 co-relation queries the response was YES. [2024-06-28 03:44:51,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 846 events. 471/846 cut-off events. For 46536/46536 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4074 event pairs, 69 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4615. Up to 701 conditions per place. [2024-06-28 03:44:51,198 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 149 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2024-06-28 03:44:51,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2029 flow [2024-06-28 03:44:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:44:51,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:44:51,198 INFO L175 Difference]: Start difference. First operand has 210 places, 172 transitions, 1405 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:44:51,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2029 flow [2024-06-28 03:44:51,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 192 transitions, 1932 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:51,317 INFO L231 Difference]: Finished difference. Result has 211 places, 174 transitions, 1450 flow [2024-06-28 03:44:51,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1450, PETRI_PLACES=211, PETRI_TRANSITIONS=174} [2024-06-28 03:44:51,317 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-28 03:44:51,317 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 174 transitions, 1450 flow [2024-06-28 03:44:51,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:51,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:51,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:51,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:44:51,318 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:51,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604653, now seen corresponding path program 3 times [2024-06-28 03:44:51,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:51,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895729730] [2024-06-28 03:44:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895729730] [2024-06-28 03:44:52,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895729730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:52,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:52,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563963376] [2024-06-28 03:44:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:52,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:52,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:52,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 174 transitions, 1450 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:52,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:52,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:52,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:52,531 INFO L124 PetriNetUnfolderBase]: 468/841 cut-off events. [2024-06-28 03:44:52,532 INFO L125 PetriNetUnfolderBase]: For 42302/42302 co-relation queries the response was YES. [2024-06-28 03:44:52,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 841 events. 468/841 cut-off events. For 42302/42302 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4058 event pairs, 70 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 4390. Up to 715 conditions per place. [2024-06-28 03:44:52,537 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 148 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-28 03:44:52,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 191 transitions, 1874 flow [2024-06-28 03:44:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:44:52,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:44:52,538 INFO L175 Difference]: Start difference. First operand has 211 places, 174 transitions, 1450 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:44:52,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 191 transitions, 1874 flow [2024-06-28 03:44:52,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 191 transitions, 1770 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:44:52,658 INFO L231 Difference]: Finished difference. Result has 215 places, 174 transitions, 1433 flow [2024-06-28 03:44:52,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1433, PETRI_PLACES=215, PETRI_TRANSITIONS=174} [2024-06-28 03:44:52,658 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-28 03:44:52,658 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 174 transitions, 1433 flow [2024-06-28 03:44:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:52,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:52,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:44:52,658 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:52,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604839, now seen corresponding path program 1 times [2024-06-28 03:44:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:52,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144146701] [2024-06-28 03:44:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:53,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:53,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144146701] [2024-06-28 03:44:53,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144146701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:53,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:53,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531008554] [2024-06-28 03:44:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:53,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:53,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:53,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:53,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 174 transitions, 1433 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:53,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:53,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:54,094 INFO L124 PetriNetUnfolderBase]: 466/838 cut-off events. [2024-06-28 03:44:54,094 INFO L125 PetriNetUnfolderBase]: For 37327/37327 co-relation queries the response was YES. [2024-06-28 03:44:54,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 838 events. 466/838 cut-off events. For 37327/37327 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4034 event pairs, 69 based on Foata normal form. 1/838 useless extension candidates. Maximal degree in co-relation 4258. Up to 709 conditions per place. [2024-06-28 03:44:54,100 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 147 selfloop transitions, 42 changer transitions 0/191 dead transitions. [2024-06-28 03:44:54,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 191 transitions, 1909 flow [2024-06-28 03:44:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:44:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:44:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:44:54,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-28 03:44:54,101 INFO L175 Difference]: Start difference. First operand has 215 places, 174 transitions, 1433 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:44:54,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 191 transitions, 1909 flow [2024-06-28 03:44:54,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 191 transitions, 1824 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:54,195 INFO L231 Difference]: Finished difference. Result has 215 places, 176 transitions, 1502 flow [2024-06-28 03:44:54,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1502, PETRI_PLACES=215, PETRI_TRANSITIONS=176} [2024-06-28 03:44:54,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-28 03:44:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 176 transitions, 1502 flow [2024-06-28 03:44:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:54,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:54,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:54,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:44:54,196 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1796484683, now seen corresponding path program 4 times [2024-06-28 03:44:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291133824] [2024-06-28 03:44:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291133824] [2024-06-28 03:44:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291133824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769634800] [2024-06-28 03:44:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:55,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:55,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 176 transitions, 1502 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:55,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:55,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:55,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:55,341 INFO L124 PetriNetUnfolderBase]: 470/846 cut-off events. [2024-06-28 03:44:55,341 INFO L125 PetriNetUnfolderBase]: For 41321/41321 co-relation queries the response was YES. [2024-06-28 03:44:55,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4467 conditions, 846 events. 470/846 cut-off events. For 41321/41321 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4093 event pairs, 65 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4360. Up to 730 conditions per place. [2024-06-28 03:44:55,346 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 157 selfloop transitions, 35 changer transitions 0/194 dead transitions. [2024-06-28 03:44:55,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 194 transitions, 1956 flow [2024-06-28 03:44:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:44:55,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:44:55,347 INFO L175 Difference]: Start difference. First operand has 215 places, 176 transitions, 1502 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:44:55,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 194 transitions, 1956 flow [2024-06-28 03:44:55,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 194 transitions, 1828 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:55,459 INFO L231 Difference]: Finished difference. Result has 218 places, 177 transitions, 1478 flow [2024-06-28 03:44:55,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1478, PETRI_PLACES=218, PETRI_TRANSITIONS=177} [2024-06-28 03:44:55,460 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-28 03:44:55,460 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 177 transitions, 1478 flow [2024-06-28 03:44:55,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:55,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:55,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:55,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:44:55,461 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:55,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash -600699499, now seen corresponding path program 1 times [2024-06-28 03:44:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527824542] [2024-06-28 03:44:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527824542] [2024-06-28 03:44:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527824542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:56,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:56,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:56,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358516490] [2024-06-28 03:44:56,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:56,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:56,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:56,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 177 transitions, 1478 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:56,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:56,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:56,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:57,090 INFO L124 PetriNetUnfolderBase]: 508/920 cut-off events. [2024-06-28 03:44:57,090 INFO L125 PetriNetUnfolderBase]: For 63078/63078 co-relation queries the response was YES. [2024-06-28 03:44:57,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 920 events. 508/920 cut-off events. For 63078/63078 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4574 event pairs, 83 based on Foata normal form. 10/929 useless extension candidates. Maximal degree in co-relation 4644. Up to 781 conditions per place. [2024-06-28 03:44:57,097 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 165 selfloop transitions, 24 changer transitions 16/207 dead transitions. [2024-06-28 03:44:57,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 207 transitions, 2071 flow [2024-06-28 03:44:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:44:57,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 03:44:57,098 INFO L175 Difference]: Start difference. First operand has 218 places, 177 transitions, 1478 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:44:57,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 207 transitions, 2071 flow [2024-06-28 03:44:57,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 207 transitions, 1977 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:57,220 INFO L231 Difference]: Finished difference. Result has 226 places, 179 transitions, 1468 flow [2024-06-28 03:44:57,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1468, PETRI_PLACES=226, PETRI_TRANSITIONS=179} [2024-06-28 03:44:57,221 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 197 predicate places. [2024-06-28 03:44:57,221 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 179 transitions, 1468 flow [2024-06-28 03:44:57,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:57,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:57,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:57,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:44:57,221 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:57,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -605942719, now seen corresponding path program 5 times [2024-06-28 03:44:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:57,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313965294] [2024-06-28 03:44:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313965294] [2024-06-28 03:44:58,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313965294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:58,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360522838] [2024-06-28 03:44:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:58,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:58,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 179 transitions, 1468 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:58,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:58,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:58,418 INFO L124 PetriNetUnfolderBase]: 476/860 cut-off events. [2024-06-28 03:44:58,418 INFO L125 PetriNetUnfolderBase]: For 42713/42713 co-relation queries the response was YES. [2024-06-28 03:44:58,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 860 events. 476/860 cut-off events. For 42713/42713 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4216 event pairs, 69 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 4360. Up to 743 conditions per place. [2024-06-28 03:44:58,424 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 156 selfloop transitions, 38 changer transitions 0/196 dead transitions. [2024-06-28 03:44:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 196 transitions, 1930 flow [2024-06-28 03:44:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:44:58,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:44:58,425 INFO L175 Difference]: Start difference. First operand has 226 places, 179 transitions, 1468 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:44:58,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 196 transitions, 1930 flow [2024-06-28 03:44:58,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 196 transitions, 1884 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:44:58,526 INFO L231 Difference]: Finished difference. Result has 226 places, 180 transitions, 1534 flow [2024-06-28 03:44:58,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1534, PETRI_PLACES=226, PETRI_TRANSITIONS=180} [2024-06-28 03:44:58,526 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 197 predicate places. [2024-06-28 03:44:58,526 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 180 transitions, 1534 flow [2024-06-28 03:44:58,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:58,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:58,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:58,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:44:58,527 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:58,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1141177171, now seen corresponding path program 6 times [2024-06-28 03:44:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:58,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420619813] [2024-06-28 03:44:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:59,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420619813] [2024-06-28 03:44:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420619813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:59,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:59,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2583467] [2024-06-28 03:44:59,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:59,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:59,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:59,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:44:59,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 180 transitions, 1534 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:59,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:59,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:44:59,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:59,681 INFO L124 PetriNetUnfolderBase]: 480/868 cut-off events. [2024-06-28 03:44:59,682 INFO L125 PetriNetUnfolderBase]: For 43271/43271 co-relation queries the response was YES. [2024-06-28 03:44:59,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4599 conditions, 868 events. 480/868 cut-off events. For 43271/43271 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4279 event pairs, 69 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 4488. Up to 737 conditions per place. [2024-06-28 03:44:59,688 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 156 selfloop transitions, 39 changer transitions 0/197 dead transitions. [2024-06-28 03:44:59,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 197 transitions, 1998 flow [2024-06-28 03:44:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:44:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:44:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:44:59,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 03:44:59,689 INFO L175 Difference]: Start difference. First operand has 226 places, 180 transitions, 1534 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:44:59,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 197 transitions, 1998 flow [2024-06-28 03:44:59,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 197 transitions, 1896 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:59,780 INFO L231 Difference]: Finished difference. Result has 228 places, 181 transitions, 1548 flow [2024-06-28 03:44:59,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1548, PETRI_PLACES=228, PETRI_TRANSITIONS=181} [2024-06-28 03:44:59,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2024-06-28 03:44:59,780 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 181 transitions, 1548 flow [2024-06-28 03:44:59,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:59,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:59,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:59,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:44:59,781 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:59,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1838700729, now seen corresponding path program 7 times [2024-06-28 03:44:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528318901] [2024-06-28 03:44:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528318901] [2024-06-28 03:45:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528318901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:00,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092740928] [2024-06-28 03:45:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:00,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:00,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:00,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:00,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 181 transitions, 1548 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:00,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:00,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:00,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:00,866 INFO L124 PetriNetUnfolderBase]: 500/912 cut-off events. [2024-06-28 03:45:00,866 INFO L125 PetriNetUnfolderBase]: For 73049/73049 co-relation queries the response was YES. [2024-06-28 03:45:00,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4834 conditions, 912 events. 500/912 cut-off events. For 73049/73049 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4556 event pairs, 88 based on Foata normal form. 12/923 useless extension candidates. Maximal degree in co-relation 4722. Up to 786 conditions per place. [2024-06-28 03:45:00,872 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 25 changer transitions 6/201 dead transitions. [2024-06-28 03:45:00,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 201 transitions, 2082 flow [2024-06-28 03:45:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:45:00,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 03:45:00,872 INFO L175 Difference]: Start difference. First operand has 228 places, 181 transitions, 1548 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:45:00,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 201 transitions, 2082 flow [2024-06-28 03:45:00,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 201 transitions, 1976 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:00,973 INFO L231 Difference]: Finished difference. Result has 230 places, 180 transitions, 1521 flow [2024-06-28 03:45:00,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1521, PETRI_PLACES=230, PETRI_TRANSITIONS=180} [2024-06-28 03:45:00,973 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2024-06-28 03:45:00,973 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 180 transitions, 1521 flow [2024-06-28 03:45:00,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:00,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:00,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:00,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:45:00,974 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:00,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:00,974 INFO L85 PathProgramCache]: Analyzing trace with hash -685371829, now seen corresponding path program 8 times [2024-06-28 03:45:00,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:00,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994029428] [2024-06-28 03:45:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:00,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994029428] [2024-06-28 03:45:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994029428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:01,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:01,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168195114] [2024-06-28 03:45:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:01,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:01,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:01,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 180 transitions, 1521 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:01,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:01,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:01,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:02,235 INFO L124 PetriNetUnfolderBase]: 480/872 cut-off events. [2024-06-28 03:45:02,235 INFO L125 PetriNetUnfolderBase]: For 45799/45799 co-relation queries the response was YES. [2024-06-28 03:45:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 872 events. 480/872 cut-off events. For 45799/45799 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4313 event pairs, 67 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 4511. Up to 755 conditions per place. [2024-06-28 03:45:02,241 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 159 selfloop transitions, 36 changer transitions 0/197 dead transitions. [2024-06-28 03:45:02,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 197 transitions, 1987 flow [2024-06-28 03:45:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:45:02,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:45:02,241 INFO L175 Difference]: Start difference. First operand has 230 places, 180 transitions, 1521 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:45:02,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 197 transitions, 1987 flow [2024-06-28 03:45:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 197 transitions, 1907 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:02,349 INFO L231 Difference]: Finished difference. Result has 232 places, 181 transitions, 1555 flow [2024-06-28 03:45:02,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1555, PETRI_PLACES=232, PETRI_TRANSITIONS=181} [2024-06-28 03:45:02,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-28 03:45:02,350 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 181 transitions, 1555 flow [2024-06-28 03:45:02,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:02,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:02,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:45:02,350 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:02,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash -680603285, now seen corresponding path program 2 times [2024-06-28 03:45:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812724407] [2024-06-28 03:45:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:03,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:03,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812724407] [2024-06-28 03:45:03,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812724407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:03,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:03,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:03,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585771665] [2024-06-28 03:45:03,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:03,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:03,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:03,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:03,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:03,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 181 transitions, 1555 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:03,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:03,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:03,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:03,779 INFO L124 PetriNetUnfolderBase]: 496/908 cut-off events. [2024-06-28 03:45:03,780 INFO L125 PetriNetUnfolderBase]: For 70370/70370 co-relation queries the response was YES. [2024-06-28 03:45:03,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 908 events. 496/908 cut-off events. For 70370/70370 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4557 event pairs, 77 based on Foata normal form. 10/917 useless extension candidates. Maximal degree in co-relation 4680. Up to 741 conditions per place. [2024-06-28 03:45:03,787 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 155 selfloop transitions, 37 changer transitions 9/203 dead transitions. [2024-06-28 03:45:03,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 203 transitions, 2069 flow [2024-06-28 03:45:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:45:03,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-28 03:45:03,789 INFO L175 Difference]: Start difference. First operand has 232 places, 181 transitions, 1555 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:45:03,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 203 transitions, 2069 flow [2024-06-28 03:45:03,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 203 transitions, 1965 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:03,907 INFO L231 Difference]: Finished difference. Result has 235 places, 178 transitions, 1515 flow [2024-06-28 03:45:03,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1515, PETRI_PLACES=235, PETRI_TRANSITIONS=178} [2024-06-28 03:45:03,908 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-28 03:45:03,908 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 178 transitions, 1515 flow [2024-06-28 03:45:03,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:03,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:03,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:03,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:45:03,909 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:03,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:03,909 INFO L85 PathProgramCache]: Analyzing trace with hash -507874385, now seen corresponding path program 3 times [2024-06-28 03:45:03,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:03,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740476918] [2024-06-28 03:45:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:04,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:04,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740476918] [2024-06-28 03:45:04,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740476918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:04,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:04,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:04,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231506645] [2024-06-28 03:45:04,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:04,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:04,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:04,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:04,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 178 transitions, 1515 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:04,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:04,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:04,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:04,861 INFO L124 PetriNetUnfolderBase]: 518/958 cut-off events. [2024-06-28 03:45:04,862 INFO L125 PetriNetUnfolderBase]: For 102807/102807 co-relation queries the response was YES. [2024-06-28 03:45:04,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 958 events. 518/958 cut-off events. For 102807/102807 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4868 event pairs, 100 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 5918. Up to 752 conditions per place. [2024-06-28 03:45:04,869 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 171 selfloop transitions, 21 changer transitions 8/202 dead transitions. [2024-06-28 03:45:04,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 202 transitions, 2261 flow [2024-06-28 03:45:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:45:04,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:45:04,869 INFO L175 Difference]: Start difference. First operand has 235 places, 178 transitions, 1515 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:45:04,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 202 transitions, 2261 flow [2024-06-28 03:45:05,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 202 transitions, 2167 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:05,014 INFO L231 Difference]: Finished difference. Result has 232 places, 175 transitions, 1458 flow [2024-06-28 03:45:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1458, PETRI_PLACES=232, PETRI_TRANSITIONS=175} [2024-06-28 03:45:05,015 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-28 03:45:05,015 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 175 transitions, 1458 flow [2024-06-28 03:45:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:05,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:05,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:45:05,015 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:05,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash -508113395, now seen corresponding path program 4 times [2024-06-28 03:45:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989653547] [2024-06-28 03:45:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:05,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989653547] [2024-06-28 03:45:05,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989653547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:05,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:05,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:05,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387716269] [2024-06-28 03:45:05,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:05,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:05,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:05,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:05,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:05,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 175 transitions, 1458 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:05,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:05,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:05,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:06,129 INFO L124 PetriNetUnfolderBase]: 515/953 cut-off events. [2024-06-28 03:45:06,130 INFO L125 PetriNetUnfolderBase]: For 104751/104751 co-relation queries the response was YES. [2024-06-28 03:45:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5935 conditions, 953 events. 515/953 cut-off events. For 104751/104751 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4844 event pairs, 110 based on Foata normal form. 10/962 useless extension candidates. Maximal degree in co-relation 5821. Up to 832 conditions per place. [2024-06-28 03:45:06,137 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 160 selfloop transitions, 17 changer transitions 17/196 dead transitions. [2024-06-28 03:45:06,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 196 transitions, 1950 flow [2024-06-28 03:45:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:45:06,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 03:45:06,138 INFO L175 Difference]: Start difference. First operand has 232 places, 175 transitions, 1458 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:45:06,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 196 transitions, 1950 flow [2024-06-28 03:45:06,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 196 transitions, 1908 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:06,325 INFO L231 Difference]: Finished difference. Result has 230 places, 168 transitions, 1409 flow [2024-06-28 03:45:06,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1409, PETRI_PLACES=230, PETRI_TRANSITIONS=168} [2024-06-28 03:45:06,325 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2024-06-28 03:45:06,325 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 168 transitions, 1409 flow [2024-06-28 03:45:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:06,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:06,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:45:06,326 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:06,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -514549429, now seen corresponding path program 9 times [2024-06-28 03:45:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996712706] [2024-06-28 03:45:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:07,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996712706] [2024-06-28 03:45:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996712706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:07,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:07,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:07,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098945963] [2024-06-28 03:45:07,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:07,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:07,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:07,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:07,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 168 transitions, 1409 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:07,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:07,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:07,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:07,494 INFO L124 PetriNetUnfolderBase]: 477/879 cut-off events. [2024-06-28 03:45:07,494 INFO L125 PetriNetUnfolderBase]: For 73005/73005 co-relation queries the response was YES. [2024-06-28 03:45:07,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 879 events. 477/879 cut-off events. For 73005/73005 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4361 event pairs, 101 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 5283. Up to 821 conditions per place. [2024-06-28 03:45:07,502 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 162 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2024-06-28 03:45:07,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 184 transitions, 1851 flow [2024-06-28 03:45:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:45:07,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-28 03:45:07,503 INFO L175 Difference]: Start difference. First operand has 230 places, 168 transitions, 1409 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:45:07,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 184 transitions, 1851 flow [2024-06-28 03:45:07,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 184 transitions, 1797 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:07,654 INFO L231 Difference]: Finished difference. Result has 221 places, 169 transitions, 1439 flow [2024-06-28 03:45:07,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=221, PETRI_TRANSITIONS=169} [2024-06-28 03:45:07,654 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-06-28 03:45:07,654 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 169 transitions, 1439 flow [2024-06-28 03:45:07,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:07,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:07,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:45:07,654 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:07,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -514554079, now seen corresponding path program 10 times [2024-06-28 03:45:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939632863] [2024-06-28 03:45:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939632863] [2024-06-28 03:45:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939632863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249505522] [2024-06-28 03:45:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:08,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:08,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 169 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:08,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:08,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:08,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:08,820 INFO L124 PetriNetUnfolderBase]: 481/887 cut-off events. [2024-06-28 03:45:08,820 INFO L125 PetriNetUnfolderBase]: For 66297/66297 co-relation queries the response was YES. [2024-06-28 03:45:08,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 887 events. 481/887 cut-off events. For 66297/66297 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4412 event pairs, 101 based on Foata normal form. 2/888 useless extension candidates. Maximal degree in co-relation 5273. Up to 815 conditions per place. [2024-06-28 03:45:08,827 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 162 selfloop transitions, 21 changer transitions 0/185 dead transitions. [2024-06-28 03:45:08,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 185 transitions, 1879 flow [2024-06-28 03:45:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:45:08,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:45:08,828 INFO L175 Difference]: Start difference. First operand has 221 places, 169 transitions, 1439 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:45:08,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 185 transitions, 1879 flow [2024-06-28 03:45:08,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 185 transitions, 1809 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:08,939 INFO L231 Difference]: Finished difference. Result has 223 places, 170 transitions, 1453 flow [2024-06-28 03:45:08,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1453, PETRI_PLACES=223, PETRI_TRANSITIONS=170} [2024-06-28 03:45:08,940 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-28 03:45:08,940 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 170 transitions, 1453 flow [2024-06-28 03:45:08,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:08,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:08,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:08,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:45:08,940 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:08,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -514369505, now seen corresponding path program 5 times [2024-06-28 03:45:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:08,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415910211] [2024-06-28 03:45:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:08,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:09,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:09,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415910211] [2024-06-28 03:45:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415910211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814110344] [2024-06-28 03:45:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:09,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:09,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 170 transitions, 1453 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:09,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:09,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:09,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:10,021 INFO L124 PetriNetUnfolderBase]: 468/864 cut-off events. [2024-06-28 03:45:10,022 INFO L125 PetriNetUnfolderBase]: For 62060/62060 co-relation queries the response was YES. [2024-06-28 03:45:10,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 864 events. 468/864 cut-off events. For 62060/62060 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4309 event pairs, 88 based on Foata normal form. 10/873 useless extension candidates. Maximal degree in co-relation 4413. Up to 760 conditions per place. [2024-06-28 03:45:10,029 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 158 selfloop transitions, 14 changer transitions 16/190 dead transitions. [2024-06-28 03:45:10,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 190 transitions, 1929 flow [2024-06-28 03:45:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:45:10,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-28 03:45:10,030 INFO L175 Difference]: Start difference. First operand has 223 places, 170 transitions, 1453 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:45:10,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 190 transitions, 1929 flow [2024-06-28 03:45:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 190 transitions, 1855 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:10,152 INFO L231 Difference]: Finished difference. Result has 226 places, 164 transitions, 1371 flow [2024-06-28 03:45:10,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1371, PETRI_PLACES=226, PETRI_TRANSITIONS=164} [2024-06-28 03:45:10,152 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 197 predicate places. [2024-06-28 03:45:10,152 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 164 transitions, 1371 flow [2024-06-28 03:45:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:10,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:10,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:10,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:45:10,152 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:10,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1295684673, now seen corresponding path program 11 times [2024-06-28 03:45:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318315252] [2024-06-28 03:45:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:10,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:10,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318315252] [2024-06-28 03:45:10,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318315252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:10,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:10,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:10,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576059245] [2024-06-28 03:45:10,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:10,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:10,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:11,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:11,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 164 transitions, 1371 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:11,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:11,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:11,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:11,303 INFO L124 PetriNetUnfolderBase]: 452/841 cut-off events. [2024-06-28 03:45:11,303 INFO L125 PetriNetUnfolderBase]: For 69551/69551 co-relation queries the response was YES. [2024-06-28 03:45:11,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 841 events. 452/841 cut-off events. For 69551/69551 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4161 event pairs, 79 based on Foata normal form. 12/852 useless extension candidates. Maximal degree in co-relation 4304. Up to 608 conditions per place. [2024-06-28 03:45:11,309 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 46 changer transitions 5/184 dead transitions. [2024-06-28 03:45:11,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 184 transitions, 1907 flow [2024-06-28 03:45:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:45:11,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-28 03:45:11,310 INFO L175 Difference]: Start difference. First operand has 226 places, 164 transitions, 1371 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:45:11,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 184 transitions, 1907 flow [2024-06-28 03:45:11,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 184 transitions, 1855 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:11,418 INFO L231 Difference]: Finished difference. Result has 218 places, 164 transitions, 1456 flow [2024-06-28 03:45:11,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1456, PETRI_PLACES=218, PETRI_TRANSITIONS=164} [2024-06-28 03:45:11,419 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-28 03:45:11,419 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 164 transitions, 1456 flow [2024-06-28 03:45:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:11,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:11,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:11,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:45:11,419 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:11,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1720638827, now seen corresponding path program 6 times [2024-06-28 03:45:11,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:11,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902649799] [2024-06-28 03:45:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:11,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902649799] [2024-06-28 03:45:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902649799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299359255] [2024-06-28 03:45:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:12,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:12,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 164 transitions, 1456 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:12,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:12,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:12,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:12,521 INFO L124 PetriNetUnfolderBase]: 456/856 cut-off events. [2024-06-28 03:45:12,521 INFO L125 PetriNetUnfolderBase]: For 58974/58974 co-relation queries the response was YES. [2024-06-28 03:45:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 856 events. 456/856 cut-off events. For 58974/58974 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4288 event pairs, 83 based on Foata normal form. 10/865 useless extension candidates. Maximal degree in co-relation 4380. Up to 598 conditions per place. [2024-06-28 03:45:12,526 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 127 selfloop transitions, 40 changer transitions 16/185 dead transitions. [2024-06-28 03:45:12,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 185 transitions, 1958 flow [2024-06-28 03:45:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:45:12,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-28 03:45:12,527 INFO L175 Difference]: Start difference. First operand has 218 places, 164 transitions, 1456 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:45:12,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 185 transitions, 1958 flow [2024-06-28 03:45:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 185 transitions, 1827 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:12,640 INFO L231 Difference]: Finished difference. Result has 220 places, 158 transitions, 1373 flow [2024-06-28 03:45:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1373, PETRI_PLACES=220, PETRI_TRANSITIONS=158} [2024-06-28 03:45:12,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-28 03:45:12,641 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 158 transitions, 1373 flow [2024-06-28 03:45:12,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:12,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:12,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:45:12,641 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:12,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1714202793, now seen corresponding path program 12 times [2024-06-28 03:45:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873475759] [2024-06-28 03:45:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:12,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:13,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:13,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873475759] [2024-06-28 03:45:13,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873475759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:13,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:13,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248115634] [2024-06-28 03:45:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:13,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:13,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 158 transitions, 1373 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:13,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:13,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:13,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:13,688 INFO L124 PetriNetUnfolderBase]: 414/770 cut-off events. [2024-06-28 03:45:13,688 INFO L125 PetriNetUnfolderBase]: For 39924/39924 co-relation queries the response was YES. [2024-06-28 03:45:13,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 770 events. 414/770 cut-off events. For 39924/39924 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3758 event pairs, 77 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 4016. Up to 600 conditions per place. [2024-06-28 03:45:13,693 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 126 selfloop transitions, 46 changer transitions 0/174 dead transitions. [2024-06-28 03:45:13,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 174 transitions, 1827 flow [2024-06-28 03:45:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:45:13,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 03:45:13,694 INFO L175 Difference]: Start difference. First operand has 220 places, 158 transitions, 1373 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:45:13,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 174 transitions, 1827 flow [2024-06-28 03:45:13,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 174 transitions, 1727 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:13,786 INFO L231 Difference]: Finished difference. Result has 213 places, 159 transitions, 1411 flow [2024-06-28 03:45:13,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1411, PETRI_PLACES=213, PETRI_TRANSITIONS=159} [2024-06-28 03:45:13,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-28 03:45:13,786 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 159 transitions, 1411 flow [2024-06-28 03:45:13,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:13,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:13,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:45:13,787 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:13,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1720877837, now seen corresponding path program 7 times [2024-06-28 03:45:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:13,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727303769] [2024-06-28 03:45:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:13,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:14,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:14,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727303769] [2024-06-28 03:45:14,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727303769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:14,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:14,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904599098] [2024-06-28 03:45:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:14,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:14,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:14,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 159 transitions, 1411 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:14,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:14,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:14,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:14,878 INFO L124 PetriNetUnfolderBase]: 455/857 cut-off events. [2024-06-28 03:45:14,878 INFO L125 PetriNetUnfolderBase]: For 73872/73872 co-relation queries the response was YES. [2024-06-28 03:45:14,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 857 events. 455/857 cut-off events. For 73872/73872 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4255 event pairs, 92 based on Foata normal form. 8/864 useless extension candidates. Maximal degree in co-relation 5070. Up to 580 conditions per place. [2024-06-28 03:45:14,884 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 38 changer transitions 9/182 dead transitions. [2024-06-28 03:45:14,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 182 transitions, 2079 flow [2024-06-28 03:45:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:45:14,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 03:45:14,884 INFO L175 Difference]: Start difference. First operand has 213 places, 159 transitions, 1411 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:45:14,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 182 transitions, 2079 flow [2024-06-28 03:45:15,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 182 transitions, 1959 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:15,009 INFO L231 Difference]: Finished difference. Result has 215 places, 156 transitions, 1354 flow [2024-06-28 03:45:15,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1354, PETRI_PLACES=215, PETRI_TRANSITIONS=156} [2024-06-28 03:45:15,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-28 03:45:15,010 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 156 transitions, 1354 flow [2024-06-28 03:45:15,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:15,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:15,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:15,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:45:15,010 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:15,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:15,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1714382717, now seen corresponding path program 8 times [2024-06-28 03:45:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:15,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730760099] [2024-06-28 03:45:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730760099] [2024-06-28 03:45:15,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730760099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:15,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:15,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788514364] [2024-06-28 03:45:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:15,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:15,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 156 transitions, 1354 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:15,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:15,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:15,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:16,092 INFO L124 PetriNetUnfolderBase]: 422/790 cut-off events. [2024-06-28 03:45:16,092 INFO L125 PetriNetUnfolderBase]: For 56138/56138 co-relation queries the response was YES. [2024-06-28 03:45:16,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4109 conditions, 790 events. 422/790 cut-off events. For 56138/56138 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3862 event pairs, 81 based on Foata normal form. 10/799 useless extension candidates. Maximal degree in co-relation 4004. Up to 580 conditions per place. [2024-06-28 03:45:16,097 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 119 selfloop transitions, 39 changer transitions 16/176 dead transitions. [2024-06-28 03:45:16,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 176 transitions, 1800 flow [2024-06-28 03:45:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:45:16,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 03:45:16,097 INFO L175 Difference]: Start difference. First operand has 215 places, 156 transitions, 1354 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:45:16,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 176 transitions, 1800 flow [2024-06-28 03:45:16,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 176 transitions, 1721 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:16,218 INFO L231 Difference]: Finished difference. Result has 213 places, 150 transitions, 1320 flow [2024-06-28 03:45:16,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1320, PETRI_PLACES=213, PETRI_TRANSITIONS=150} [2024-06-28 03:45:16,219 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-28 03:45:16,219 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 150 transitions, 1320 flow [2024-06-28 03:45:16,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:16,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:16,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:16,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:45:16,219 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:16,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:16,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1714198143, now seen corresponding path program 13 times [2024-06-28 03:45:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820651864] [2024-06-28 03:45:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820651864] [2024-06-28 03:45:17,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820651864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:17,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581290761] [2024-06-28 03:45:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:17,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 150 transitions, 1320 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:17,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:17,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:17,352 INFO L124 PetriNetUnfolderBase]: 426/802 cut-off events. [2024-06-28 03:45:17,352 INFO L125 PetriNetUnfolderBase]: For 65103/65103 co-relation queries the response was YES. [2024-06-28 03:45:17,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 802 events. 426/802 cut-off events. For 65103/65103 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3900 event pairs, 87 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 4996. Up to 572 conditions per place. [2024-06-28 03:45:17,357 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 127 selfloop transitions, 42 changer transitions 0/171 dead transitions. [2024-06-28 03:45:17,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 171 transitions, 1956 flow [2024-06-28 03:45:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:45:17,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-28 03:45:17,358 INFO L175 Difference]: Start difference. First operand has 213 places, 150 transitions, 1320 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:45:17,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 171 transitions, 1956 flow [2024-06-28 03:45:17,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 171 transitions, 1850 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:17,503 INFO L231 Difference]: Finished difference. Result has 205 places, 152 transitions, 1380 flow [2024-06-28 03:45:17,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1380, PETRI_PLACES=205, PETRI_TRANSITIONS=152} [2024-06-28 03:45:17,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-28 03:45:17,503 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 152 transitions, 1380 flow [2024-06-28 03:45:17,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:17,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:17,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:17,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:45:17,504 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:17,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash -252049291, now seen corresponding path program 14 times [2024-06-28 03:45:17,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:17,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557473666] [2024-06-28 03:45:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:17,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557473666] [2024-06-28 03:45:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557473666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:18,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:18,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561534668] [2024-06-28 03:45:18,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:18,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:18,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:18,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:18,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:18,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 152 transitions, 1380 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:18,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:18,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:18,566 INFO L124 PetriNetUnfolderBase]: 410/774 cut-off events. [2024-06-28 03:45:18,566 INFO L125 PetriNetUnfolderBase]: For 53878/53878 co-relation queries the response was YES. [2024-06-28 03:45:18,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4092 conditions, 774 events. 410/774 cut-off events. For 53878/53878 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3780 event pairs, 91 based on Foata normal form. 12/785 useless extension candidates. Maximal degree in co-relation 3992. Up to 672 conditions per place. [2024-06-28 03:45:18,571 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 139 selfloop transitions, 20 changer transitions 7/168 dead transitions. [2024-06-28 03:45:18,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 168 transitions, 1796 flow [2024-06-28 03:45:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:45:18,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:45:18,572 INFO L175 Difference]: Start difference. First operand has 205 places, 152 transitions, 1380 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:45:18,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 168 transitions, 1796 flow [2024-06-28 03:45:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 168 transitions, 1684 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:45:18,660 INFO L231 Difference]: Finished difference. Result has 208 places, 149 transitions, 1296 flow [2024-06-28 03:45:18,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1296, PETRI_PLACES=208, PETRI_TRANSITIONS=149} [2024-06-28 03:45:18,660 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-28 03:45:18,660 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 149 transitions, 1296 flow [2024-06-28 03:45:18,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:18,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:45:18,661 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:18,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1377678255, now seen corresponding path program 9 times [2024-06-28 03:45:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:18,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687179218] [2024-06-28 03:45:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:19,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:19,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687179218] [2024-06-28 03:45:19,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687179218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:19,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:19,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:19,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522123899] [2024-06-28 03:45:19,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:19,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:19,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:19,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:19,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:19,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:19,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 149 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:19,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:19,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:19,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:19,665 INFO L124 PetriNetUnfolderBase]: 425/811 cut-off events. [2024-06-28 03:45:19,665 INFO L125 PetriNetUnfolderBase]: For 67113/67113 co-relation queries the response was YES. [2024-06-28 03:45:19,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4839 conditions, 811 events. 425/811 cut-off events. For 67113/67113 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3990 event pairs, 104 based on Foata normal form. 8/818 useless extension candidates. Maximal degree in co-relation 4738. Up to 624 conditions per place. [2024-06-28 03:45:19,671 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 143 selfloop transitions, 16 changer transitions 10/171 dead transitions. [2024-06-28 03:45:19,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 171 transitions, 1898 flow [2024-06-28 03:45:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:45:19,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 03:45:19,672 INFO L175 Difference]: Start difference. First operand has 208 places, 149 transitions, 1296 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:45:19,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 171 transitions, 1898 flow [2024-06-28 03:45:19,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 171 transitions, 1848 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:19,807 INFO L231 Difference]: Finished difference. Result has 210 places, 146 transitions, 1264 flow [2024-06-28 03:45:19,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1264, PETRI_PLACES=210, PETRI_TRANSITIONS=146} [2024-06-28 03:45:19,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-28 03:45:19,808 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 146 transitions, 1264 flow [2024-06-28 03:45:19,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:19,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:19,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:19,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:45:19,808 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:19,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1082459055, now seen corresponding path program 10 times [2024-06-28 03:45:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:19,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665278251] [2024-06-28 03:45:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:19,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665278251] [2024-06-28 03:45:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665278251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:20,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:20,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:20,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187904841] [2024-06-28 03:45:20,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:20,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:20,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:20,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:20,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 146 transitions, 1264 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:20,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:20,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:20,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:20,763 INFO L124 PetriNetUnfolderBase]: 415/793 cut-off events. [2024-06-28 03:45:20,763 INFO L125 PetriNetUnfolderBase]: For 69033/69033 co-relation queries the response was YES. [2024-06-28 03:45:20,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4780 conditions, 793 events. 415/793 cut-off events. For 69033/69033 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3874 event pairs, 98 based on Foata normal form. 8/800 useless extension candidates. Maximal degree in co-relation 4678. Up to 624 conditions per place. [2024-06-28 03:45:20,768 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 139 selfloop transitions, 13 changer transitions 12/166 dead transitions. [2024-06-28 03:45:20,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 166 transitions, 1854 flow [2024-06-28 03:45:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:45:20,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-28 03:45:20,769 INFO L175 Difference]: Start difference. First operand has 210 places, 146 transitions, 1264 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:45:20,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 166 transitions, 1854 flow [2024-06-28 03:45:20,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 166 transitions, 1815 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:20,899 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 1214 flow [2024-06-28 03:45:20,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1214, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2024-06-28 03:45:20,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-28 03:45:20,899 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 1214 flow [2024-06-28 03:45:20,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:20,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:20,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:45:20,900 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:20,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1082220045, now seen corresponding path program 11 times [2024-06-28 03:45:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:20,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138520027] [2024-06-28 03:45:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:20,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138520027] [2024-06-28 03:45:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138520027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:21,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615526162] [2024-06-28 03:45:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:21,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:21,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:21,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:21,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:21,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:22,245 INFO L124 PetriNetUnfolderBase]: 390/746 cut-off events. [2024-06-28 03:45:22,245 INFO L125 PetriNetUnfolderBase]: For 61519/61519 co-relation queries the response was YES. [2024-06-28 03:45:22,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 746 events. 390/746 cut-off events. For 61519/61519 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3571 event pairs, 98 based on Foata normal form. 10/755 useless extension candidates. Maximal degree in co-relation 4160. Up to 661 conditions per place. [2024-06-28 03:45:22,251 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 13 changer transitions 9/156 dead transitions. [2024-06-28 03:45:22,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 156 transitions, 1608 flow [2024-06-28 03:45:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 03:45:22,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-28 03:45:22,252 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 1214 flow. Second operand 11 states and 105 transitions. [2024-06-28 03:45:22,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 156 transitions, 1608 flow [2024-06-28 03:45:22,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 156 transitions, 1577 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:22,364 INFO L231 Difference]: Finished difference. Result has 200 places, 136 transitions, 1191 flow [2024-06-28 03:45:22,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1191, PETRI_PLACES=200, PETRI_TRANSITIONS=136} [2024-06-28 03:45:22,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-28 03:45:22,365 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 136 transitions, 1191 flow [2024-06-28 03:45:22,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:22,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:22,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:22,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:45:22,365 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:22,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1926987031, now seen corresponding path program 15 times [2024-06-28 03:45:22,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:22,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565939325] [2024-06-28 03:45:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565939325] [2024-06-28 03:45:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565939325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:23,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:23,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:23,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740498412] [2024-06-28 03:45:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:23,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:23,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:23,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:23,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 136 transitions, 1191 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:23,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:23,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:23,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:23,531 INFO L124 PetriNetUnfolderBase]: 368/704 cut-off events. [2024-06-28 03:45:23,531 INFO L125 PetriNetUnfolderBase]: For 41274/41274 co-relation queries the response was YES. [2024-06-28 03:45:23,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 704 events. 368/704 cut-off events. For 41274/41274 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3335 event pairs, 85 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 3958. Up to 418 conditions per place. [2024-06-28 03:45:23,535 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 65 changer transitions 0/152 dead transitions. [2024-06-28 03:45:23,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 152 transitions, 1563 flow [2024-06-28 03:45:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:45:23,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-28 03:45:23,538 INFO L175 Difference]: Start difference. First operand has 200 places, 136 transitions, 1191 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:45:23,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 152 transitions, 1563 flow [2024-06-28 03:45:23,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 152 transitions, 1531 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:23,631 INFO L231 Difference]: Finished difference. Result has 197 places, 137 transitions, 1325 flow [2024-06-28 03:45:23,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1325, PETRI_PLACES=197, PETRI_TRANSITIONS=137} [2024-06-28 03:45:23,631 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-28 03:45:23,631 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 137 transitions, 1325 flow [2024-06-28 03:45:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:23,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:23,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:23,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:45:23,632 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:23,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1148875449, now seen corresponding path program 16 times [2024-06-28 03:45:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:23,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556559721] [2024-06-28 03:45:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:23,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556559721] [2024-06-28 03:45:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556559721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723062172] [2024-06-28 03:45:24,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:24,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:24,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:24,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:24,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:24,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:24,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 137 transitions, 1325 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:24,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:24,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:24,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:24,768 INFO L124 PetriNetUnfolderBase]: 372/712 cut-off events. [2024-06-28 03:45:24,768 INFO L125 PetriNetUnfolderBase]: For 40847/40847 co-relation queries the response was YES. [2024-06-28 03:45:24,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 712 events. 372/712 cut-off events. For 40847/40847 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3387 event pairs, 85 based on Foata normal form. 2/713 useless extension candidates. Maximal degree in co-relation 4150. Up to 412 conditions per place. [2024-06-28 03:45:24,772 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 66 changer transitions 0/153 dead transitions. [2024-06-28 03:45:24,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 153 transitions, 1699 flow [2024-06-28 03:45:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:45:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-28 03:45:24,773 INFO L175 Difference]: Start difference. First operand has 197 places, 137 transitions, 1325 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:45:24,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 153 transitions, 1699 flow [2024-06-28 03:45:24,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 153 transitions, 1543 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:24,896 INFO L231 Difference]: Finished difference. Result has 199 places, 138 transitions, 1339 flow [2024-06-28 03:45:24,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1339, PETRI_PLACES=199, PETRI_TRANSITIONS=138} [2024-06-28 03:45:24,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:45:24,897 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 138 transitions, 1339 flow [2024-06-28 03:45:24,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:24,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:24,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:24,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:45:24,897 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:24,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1931635605, now seen corresponding path program 12 times [2024-06-28 03:45:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:24,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584768776] [2024-06-28 03:45:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:24,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584768776] [2024-06-28 03:45:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584768776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103796969] [2024-06-28 03:45:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:25,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:25,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:25,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:25,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 138 transitions, 1339 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:25,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:25,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:25,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:26,141 INFO L124 PetriNetUnfolderBase]: 388/748 cut-off events. [2024-06-28 03:45:26,142 INFO L125 PetriNetUnfolderBase]: For 56858/56858 co-relation queries the response was YES. [2024-06-28 03:45:26,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 748 events. 388/748 cut-off events. For 56858/56858 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3623 event pairs, 83 based on Foata normal form. 10/757 useless extension candidates. Maximal degree in co-relation 4292. Up to 569 conditions per place. [2024-06-28 03:45:26,147 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 40 changer transitions 9/158 dead transitions. [2024-06-28 03:45:26,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 158 transitions, 1749 flow [2024-06-28 03:45:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:45:26,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 03:45:26,148 INFO L175 Difference]: Start difference. First operand has 199 places, 138 transitions, 1339 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:45:26,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 158 transitions, 1749 flow [2024-06-28 03:45:26,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 158 transitions, 1589 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:26,251 INFO L231 Difference]: Finished difference. Result has 202 places, 135 transitions, 1249 flow [2024-06-28 03:45:26,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1249, PETRI_PLACES=202, PETRI_TRANSITIONS=135} [2024-06-28 03:45:26,252 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 03:45:26,252 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 135 transitions, 1249 flow [2024-06-28 03:45:26,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:26,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:26,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:26,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:45:26,252 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:26,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -419954007, now seen corresponding path program 17 times [2024-06-28 03:45:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:26,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142773800] [2024-06-28 03:45:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:27,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:27,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142773800] [2024-06-28 03:45:27,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142773800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:27,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:27,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:27,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468408037] [2024-06-28 03:45:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:27,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:27,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:27,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:27,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:27,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 135 transitions, 1249 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:27,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:27,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:27,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:27,408 INFO L124 PetriNetUnfolderBase]: 366/706 cut-off events. [2024-06-28 03:45:27,408 INFO L125 PetriNetUnfolderBase]: For 43043/43043 co-relation queries the response was YES. [2024-06-28 03:45:27,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4152 conditions, 706 events. 366/706 cut-off events. For 43043/43043 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3392 event pairs, 75 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 4066. Up to 577 conditions per place. [2024-06-28 03:45:27,413 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 109 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2024-06-28 03:45:27,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 150 transitions, 1613 flow [2024-06-28 03:45:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:45:27,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-28 03:45:27,416 INFO L175 Difference]: Start difference. First operand has 202 places, 135 transitions, 1249 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:45:27,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 150 transitions, 1613 flow [2024-06-28 03:45:27,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 150 transitions, 1523 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:27,517 INFO L231 Difference]: Finished difference. Result has 199 places, 136 transitions, 1277 flow [2024-06-28 03:45:27,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1277, PETRI_PLACES=199, PETRI_TRANSITIONS=136} [2024-06-28 03:45:27,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:45:27,517 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 136 transitions, 1277 flow [2024-06-28 03:45:27,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:27,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:27,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:27,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:45:27,518 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:27,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1650367391, now seen corresponding path program 18 times [2024-06-28 03:45:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:27,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516011999] [2024-06-28 03:45:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516011999] [2024-06-28 03:45:28,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516011999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:28,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:28,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506691151] [2024-06-28 03:45:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:28,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:28,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:28,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:28,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 136 transitions, 1277 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:28,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:28,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:28,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:28,531 INFO L124 PetriNetUnfolderBase]: 386/750 cut-off events. [2024-06-28 03:45:28,531 INFO L125 PetriNetUnfolderBase]: For 62854/62854 co-relation queries the response was YES. [2024-06-28 03:45:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 750 events. 386/750 cut-off events. For 62854/62854 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3662 event pairs, 86 based on Foata normal form. 12/761 useless extension candidates. Maximal degree in co-relation 4276. Up to 618 conditions per place. [2024-06-28 03:45:28,536 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 119 selfloop transitions, 27 changer transitions 6/154 dead transitions. [2024-06-28 03:45:28,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 154 transitions, 1701 flow [2024-06-28 03:45:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:45:28,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 03:45:28,537 INFO L175 Difference]: Start difference. First operand has 199 places, 136 transitions, 1277 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:45:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 154 transitions, 1701 flow [2024-06-28 03:45:28,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 154 transitions, 1593 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:28,646 INFO L231 Difference]: Finished difference. Result has 201 places, 135 transitions, 1253 flow [2024-06-28 03:45:28,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1253, PETRI_PLACES=201, PETRI_TRANSITIONS=135} [2024-06-28 03:45:28,646 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-28 03:45:28,647 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 135 transitions, 1253 flow [2024-06-28 03:45:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:28,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:28,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:45:28,647 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:28,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash -242695573, now seen corresponding path program 13 times [2024-06-28 03:45:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479083125] [2024-06-28 03:45:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:29,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:29,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479083125] [2024-06-28 03:45:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479083125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273658973] [2024-06-28 03:45:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:29,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:29,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:29,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:29,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:29,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 135 transitions, 1253 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:29,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:29,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:29,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:30,041 INFO L124 PetriNetUnfolderBase]: 378/738 cut-off events. [2024-06-28 03:45:30,042 INFO L125 PetriNetUnfolderBase]: For 58898/58898 co-relation queries the response was YES. [2024-06-28 03:45:30,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 738 events. 378/738 cut-off events. For 58898/58898 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3613 event pairs, 86 based on Foata normal form. 10/747 useless extension candidates. Maximal degree in co-relation 4159. Up to 608 conditions per place. [2024-06-28 03:45:30,046 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 21 changer transitions 16/154 dead transitions. [2024-06-28 03:45:30,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 154 transitions, 1647 flow [2024-06-28 03:45:30,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:45:30,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-28 03:45:30,047 INFO L175 Difference]: Start difference. First operand has 201 places, 135 transitions, 1253 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:45:30,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 154 transitions, 1647 flow [2024-06-28 03:45:30,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 154 transitions, 1561 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:30,160 INFO L231 Difference]: Finished difference. Result has 204 places, 129 transitions, 1173 flow [2024-06-28 03:45:30,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1173, PETRI_PLACES=204, PETRI_TRANSITIONS=129} [2024-06-28 03:45:30,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-28 03:45:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 129 transitions, 1173 flow [2024-06-28 03:45:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:30,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:30,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:30,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:45:30,161 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:30,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1319582529, now seen corresponding path program 19 times [2024-06-28 03:45:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664338555] [2024-06-28 03:45:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:30,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664338555] [2024-06-28 03:45:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664338555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:30,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702911092] [2024-06-28 03:45:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:30,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:31,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:31,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 129 transitions, 1173 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:31,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:31,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:31,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:31,258 INFO L124 PetriNetUnfolderBase]: 348/680 cut-off events. [2024-06-28 03:45:31,258 INFO L125 PetriNetUnfolderBase]: For 44609/44609 co-relation queries the response was YES. [2024-06-28 03:45:31,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 680 events. 348/680 cut-off events. For 44609/44609 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3256 event pairs, 84 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 3911. Up to 610 conditions per place. [2024-06-28 03:45:31,263 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-28 03:45:31,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 143 transitions, 1527 flow [2024-06-28 03:45:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:45:31,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 03:45:31,264 INFO L175 Difference]: Start difference. First operand has 204 places, 129 transitions, 1173 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:45:31,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 143 transitions, 1527 flow [2024-06-28 03:45:31,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 143 transitions, 1473 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:31,359 INFO L231 Difference]: Finished difference. Result has 197 places, 130 transitions, 1209 flow [2024-06-28 03:45:31,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1209, PETRI_PLACES=197, PETRI_TRANSITIONS=130} [2024-06-28 03:45:31,360 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-28 03:45:31,360 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 130 transitions, 1209 flow [2024-06-28 03:45:31,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:31,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:31,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:31,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:45:31,360 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:31,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1656801131, now seen corresponding path program 20 times [2024-06-28 03:45:31,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:31,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460747692] [2024-06-28 03:45:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:31,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:32,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460747692] [2024-06-28 03:45:32,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460747692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:32,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:32,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511956945] [2024-06-28 03:45:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:32,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:32,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:32,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:32,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:32,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 130 transitions, 1209 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:32,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:32,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:32,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:32,383 INFO L124 PetriNetUnfolderBase]: 345/675 cut-off events. [2024-06-28 03:45:32,383 INFO L125 PetriNetUnfolderBase]: For 36946/36946 co-relation queries the response was YES. [2024-06-28 03:45:32,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 675 events. 345/675 cut-off events. For 36946/36946 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3221 event pairs, 83 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 3695. Up to 591 conditions per place. [2024-06-28 03:45:32,388 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-28 03:45:32,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 143 transitions, 1523 flow [2024-06-28 03:45:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:45:32,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-28 03:45:32,389 INFO L175 Difference]: Start difference. First operand has 197 places, 130 transitions, 1209 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:45:32,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 143 transitions, 1523 flow [2024-06-28 03:45:32,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 143 transitions, 1445 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:32,491 INFO L231 Difference]: Finished difference. Result has 199 places, 130 transitions, 1183 flow [2024-06-28 03:45:32,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=199, PETRI_TRANSITIONS=130} [2024-06-28 03:45:32,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:45:32,491 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 130 transitions, 1183 flow [2024-06-28 03:45:32,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:32,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:32,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:32,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:45:32,492 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:32,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1656616557, now seen corresponding path program 14 times [2024-06-28 03:45:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:32,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889173382] [2024-06-28 03:45:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:33,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:33,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889173382] [2024-06-28 03:45:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889173382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:33,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970000119] [2024-06-28 03:45:33,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:33,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:33,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:33,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:33,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 130 transitions, 1183 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:33,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:33,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:33,719 INFO L124 PetriNetUnfolderBase]: 361/711 cut-off events. [2024-06-28 03:45:33,719 INFO L125 PetriNetUnfolderBase]: For 52510/52510 co-relation queries the response was YES. [2024-06-28 03:45:33,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3894 conditions, 711 events. 361/711 cut-off events. For 52510/52510 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3455 event pairs, 89 based on Foata normal form. 10/720 useless extension candidates. Maximal degree in co-relation 3809. Up to 599 conditions per place. [2024-06-28 03:45:33,724 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 20 changer transitions 9/148 dead transitions. [2024-06-28 03:45:33,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 148 transitions, 1561 flow [2024-06-28 03:45:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:45:33,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-28 03:45:33,725 INFO L175 Difference]: Start difference. First operand has 199 places, 130 transitions, 1183 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:45:33,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 148 transitions, 1561 flow [2024-06-28 03:45:33,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 148 transitions, 1411 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:33,821 INFO L231 Difference]: Finished difference. Result has 199 places, 127 transitions, 1060 flow [2024-06-28 03:45:33,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=188, 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=11, PETRI_FLOW=1060, PETRI_PLACES=199, PETRI_TRANSITIONS=127} [2024-06-28 03:45:33,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-28 03:45:33,822 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 127 transitions, 1060 flow [2024-06-28 03:45:33,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:33,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:33,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:45:33,822 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:33,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1326257573, now seen corresponding path program 15 times [2024-06-28 03:45:33,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954652331] [2024-06-28 03:45:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954652331] [2024-06-28 03:45:34,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954652331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:34,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:34,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:45:34,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412133364] [2024-06-28 03:45:34,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:34,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:45:34,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:45:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:45:34,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:34,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 127 transitions, 1060 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:34,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:34,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:34,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:34,744 INFO L124 PetriNetUnfolderBase]: 362/722 cut-off events. [2024-06-28 03:45:34,744 INFO L125 PetriNetUnfolderBase]: For 61442/61442 co-relation queries the response was YES. [2024-06-28 03:45:34,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4078 conditions, 722 events. 362/722 cut-off events. For 61442/61442 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3546 event pairs, 96 based on Foata normal form. 8/729 useless extension candidates. Maximal degree in co-relation 3994. Up to 585 conditions per place. [2024-06-28 03:45:34,748 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 118 selfloop transitions, 17 changer transitions 9/146 dead transitions. [2024-06-28 03:45:34,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 146 transitions, 1562 flow [2024-06-28 03:45:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:45:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:45:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:45:34,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 03:45:34,749 INFO L175 Difference]: Start difference. First operand has 199 places, 127 transitions, 1060 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:45:34,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 146 transitions, 1562 flow [2024-06-28 03:45:34,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 146 transitions, 1485 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:34,865 INFO L231 Difference]: Finished difference. Result has 195 places, 123 transitions, 1012 flow [2024-06-28 03:45:34,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1012, PETRI_PLACES=195, PETRI_TRANSITIONS=123} [2024-06-28 03:45:34,865 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 03:45:34,866 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 123 transitions, 1012 flow [2024-06-28 03:45:34,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:34,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:34,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:45:34,866 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:34,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1688679479, now seen corresponding path program 16 times [2024-06-28 03:45:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:34,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548346277] [2024-06-28 03:45:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:35,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:35,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548346277] [2024-06-28 03:45:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548346277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:35,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:35,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:35,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477032510] [2024-06-28 03:45:35,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:35,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:35,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:35,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:35,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:35,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:35,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 123 transitions, 1012 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:35,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:35,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:35,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:36,099 INFO L124 PetriNetUnfolderBase]: 380/753 cut-off events. [2024-06-28 03:45:36,100 INFO L125 PetriNetUnfolderBase]: For 61589/61589 co-relation queries the response was YES. [2024-06-28 03:45:36,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 753 events. 380/753 cut-off events. For 61589/61589 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3710 event pairs, 95 based on Foata normal form. 10/762 useless extension candidates. Maximal degree in co-relation 4009. Up to 613 conditions per place. [2024-06-28 03:45:36,105 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 113 selfloop transitions, 24 changer transitions 16/155 dead transitions. [2024-06-28 03:45:36,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 155 transitions, 1485 flow [2024-06-28 03:45:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:45:36,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3527777777777778 [2024-06-28 03:45:36,105 INFO L175 Difference]: Start difference. First operand has 195 places, 123 transitions, 1012 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:45:36,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 155 transitions, 1485 flow [2024-06-28 03:45:36,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 155 transitions, 1440 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:36,214 INFO L231 Difference]: Finished difference. Result has 195 places, 124 transitions, 1043 flow [2024-06-28 03:45:36,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1043, PETRI_PLACES=195, PETRI_TRANSITIONS=124} [2024-06-28 03:45:36,214 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 03:45:36,214 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 124 transitions, 1043 flow [2024-06-28 03:45:36,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:36,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:36,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:36,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:45:36,214 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:36,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:36,215 INFO L85 PathProgramCache]: Analyzing trace with hash -988011529, now seen corresponding path program 17 times [2024-06-28 03:45:36,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:36,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671380004] [2024-06-28 03:45:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:36,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671380004] [2024-06-28 03:45:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671380004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:37,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:37,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919158543] [2024-06-28 03:45:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:37,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:37,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 124 transitions, 1043 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:37,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:37,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:37,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:37,480 INFO L124 PetriNetUnfolderBase]: 353/707 cut-off events. [2024-06-28 03:45:37,480 INFO L125 PetriNetUnfolderBase]: For 52434/52434 co-relation queries the response was YES. [2024-06-28 03:45:37,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3763 conditions, 707 events. 353/707 cut-off events. For 52434/52434 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3448 event pairs, 90 based on Foata normal form. 10/716 useless extension candidates. Maximal degree in co-relation 3681. Up to 578 conditions per place. [2024-06-28 03:45:37,484 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 108 selfloop transitions, 30 changer transitions 11/151 dead transitions. [2024-06-28 03:45:37,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 151 transitions, 1466 flow [2024-06-28 03:45:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:45:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 03:45:37,485 INFO L175 Difference]: Start difference. First operand has 195 places, 124 transitions, 1043 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:45:37,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 151 transitions, 1466 flow [2024-06-28 03:45:37,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 151 transitions, 1406 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:37,590 INFO L231 Difference]: Finished difference. Result has 195 places, 123 transitions, 1062 flow [2024-06-28 03:45:37,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1062, PETRI_PLACES=195, PETRI_TRANSITIONS=123} [2024-06-28 03:45:37,591 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 03:45:37,591 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 123 transitions, 1062 flow [2024-06-28 03:45:37,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:37,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:37,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:45:37,592 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:37,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash -225541547, now seen corresponding path program 1 times [2024-06-28 03:45:37,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:37,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663545853] [2024-06-28 03:45:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:38,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663545853] [2024-06-28 03:45:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663545853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:38,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:38,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:38,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067847204] [2024-06-28 03:45:38,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:38,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:38,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 123 transitions, 1062 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:38,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:38,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:38,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:38,995 INFO L124 PetriNetUnfolderBase]: 335/677 cut-off events. [2024-06-28 03:45:38,995 INFO L125 PetriNetUnfolderBase]: For 46012/46012 co-relation queries the response was YES. [2024-06-28 03:45:38,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3639 conditions, 677 events. 335/677 cut-off events. For 46012/46012 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3285 event pairs, 87 based on Foata normal form. 6/682 useless extension candidates. Maximal degree in co-relation 3558. Up to 548 conditions per place. [2024-06-28 03:45:38,999 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 103 selfloop transitions, 16 changer transitions 23/144 dead transitions. [2024-06-28 03:45:38,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 144 transitions, 1398 flow [2024-06-28 03:45:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:45:39,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-28 03:45:39,000 INFO L175 Difference]: Start difference. First operand has 195 places, 123 transitions, 1062 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:45:39,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 144 transitions, 1398 flow [2024-06-28 03:45:39,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 144 transitions, 1310 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:39,092 INFO L231 Difference]: Finished difference. Result has 192 places, 114 transitions, 933 flow [2024-06-28 03:45:39,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=933, PETRI_PLACES=192, PETRI_TRANSITIONS=114} [2024-06-28 03:45:39,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-28 03:45:39,093 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 114 transitions, 933 flow [2024-06-28 03:45:39,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:39,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:39,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:39,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:45:39,093 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:39,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -139973761, now seen corresponding path program 2 times [2024-06-28 03:45:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019408030] [2024-06-28 03:45:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:40,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019408030] [2024-06-28 03:45:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019408030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042617570] [2024-06-28 03:45:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:40,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:40,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 114 transitions, 933 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:40,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:40,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:40,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:40,593 INFO L124 PetriNetUnfolderBase]: 305/625 cut-off events. [2024-06-28 03:45:40,593 INFO L125 PetriNetUnfolderBase]: For 45819/45819 co-relation queries the response was YES. [2024-06-28 03:45:40,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3375 conditions, 625 events. 305/625 cut-off events. For 45819/45819 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2989 event pairs, 70 based on Foata normal form. 6/630 useless extension candidates. Maximal degree in co-relation 3296. Up to 447 conditions per place. [2024-06-28 03:45:40,597 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 87 selfloop transitions, 30 changer transitions 14/133 dead transitions. [2024-06-28 03:45:40,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 133 transitions, 1245 flow [2024-06-28 03:45:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:45:40,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-28 03:45:40,598 INFO L175 Difference]: Start difference. First operand has 192 places, 114 transitions, 933 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:45:40,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 133 transitions, 1245 flow [2024-06-28 03:45:40,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 133 transitions, 1193 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:40,689 INFO L231 Difference]: Finished difference. Result has 182 places, 106 transitions, 886 flow [2024-06-28 03:45:40,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=886, PETRI_PLACES=182, PETRI_TRANSITIONS=106} [2024-06-28 03:45:40,689 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-28 03:45:40,689 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 106 transitions, 886 flow [2024-06-28 03:45:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:40,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:40,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:40,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:45:40,690 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:40,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash -139829611, now seen corresponding path program 3 times [2024-06-28 03:45:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:40,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003476187] [2024-06-28 03:45:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:40,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:41,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003476187] [2024-06-28 03:45:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003476187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:41,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719778494] [2024-06-28 03:45:41,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:41,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:41,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:41,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 106 transitions, 886 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:41,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:41,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:41,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:42,060 INFO L124 PetriNetUnfolderBase]: 281/585 cut-off events. [2024-06-28 03:45:42,060 INFO L125 PetriNetUnfolderBase]: For 39857/39857 co-relation queries the response was YES. [2024-06-28 03:45:42,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3169 conditions, 585 events. 281/585 cut-off events. For 39857/39857 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2778 event pairs, 72 based on Foata normal form. 6/590 useless extension candidates. Maximal degree in co-relation 3095. Up to 443 conditions per place. [2024-06-28 03:45:42,063 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 83 selfloop transitions, 27 changer transitions 13/125 dead transitions. [2024-06-28 03:45:42,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 125 transitions, 1184 flow [2024-06-28 03:45:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:45:42,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-28 03:45:42,064 INFO L175 Difference]: Start difference. First operand has 182 places, 106 transitions, 886 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:45:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 125 transitions, 1184 flow [2024-06-28 03:45:42,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 125 transitions, 1118 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:42,127 INFO L231 Difference]: Finished difference. Result has 176 places, 101 transitions, 832 flow [2024-06-28 03:45:42,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=832, PETRI_PLACES=176, PETRI_TRANSITIONS=101} [2024-06-28 03:45:42,127 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-28 03:45:42,127 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 101 transitions, 832 flow [2024-06-28 03:45:42,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:42,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:42,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:42,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:45:42,127 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:42,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash -406539605, now seen corresponding path program 4 times [2024-06-28 03:45:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:42,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644417632] [2024-06-28 03:45:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:43,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644417632] [2024-06-28 03:45:43,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644417632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:43,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:43,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144355427] [2024-06-28 03:45:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:43,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:43,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 101 transitions, 832 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:43,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:43,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:43,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:43,445 INFO L124 PetriNetUnfolderBase]: 265/557 cut-off events. [2024-06-28 03:45:43,445 INFO L125 PetriNetUnfolderBase]: For 36128/36128 co-relation queries the response was YES. [2024-06-28 03:45:43,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 557 events. 265/557 cut-off events. For 36128/36128 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2618 event pairs, 66 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2931. Up to 417 conditions per place. [2024-06-28 03:45:43,447 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 79 selfloop transitions, 16 changer transitions 23/120 dead transitions. [2024-06-28 03:45:43,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 120 transitions, 1116 flow [2024-06-28 03:45:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:45:43,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-06-28 03:45:43,448 INFO L175 Difference]: Start difference. First operand has 176 places, 101 transitions, 832 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:45:43,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 120 transitions, 1116 flow [2024-06-28 03:45:43,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 120 transitions, 1050 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:45:43,513 INFO L231 Difference]: Finished difference. Result has 169 places, 89 transitions, 689 flow [2024-06-28 03:45:43,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=689, PETRI_PLACES=169, PETRI_TRANSITIONS=89} [2024-06-28 03:45:43,514 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-28 03:45:43,514 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 89 transitions, 689 flow [2024-06-28 03:45:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:43,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:43,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:43,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:45:43,514 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:43,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash -138699790, now seen corresponding path program 1 times [2024-06-28 03:45:43,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:43,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206225936] [2024-06-28 03:45:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:44,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206225936] [2024-06-28 03:45:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206225936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:44,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357959274] [2024-06-28 03:45:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:44,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:44,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:44,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 89 transitions, 689 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:44,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:44,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:44,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:44,980 INFO L124 PetriNetUnfolderBase]: 232/498 cut-off events. [2024-06-28 03:45:44,980 INFO L125 PetriNetUnfolderBase]: For 34626/34626 co-relation queries the response was YES. [2024-06-28 03:45:44,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 498 events. 232/498 cut-off events. For 34626/34626 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2262 event pairs, 71 based on Foata normal form. 8/505 useless extension candidates. Maximal degree in co-relation 2527. Up to 387 conditions per place. [2024-06-28 03:45:44,982 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 64 selfloop transitions, 7 changer transitions 31/104 dead transitions. [2024-06-28 03:45:44,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 104 transitions, 931 flow [2024-06-28 03:45:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 03:45:44,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-28 03:45:44,983 INFO L175 Difference]: Start difference. First operand has 169 places, 89 transitions, 689 flow. Second operand 11 states and 103 transitions. [2024-06-28 03:45:44,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 104 transitions, 931 flow [2024-06-28 03:45:45,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 104 transitions, 881 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:45,027 INFO L231 Difference]: Finished difference. Result has 159 places, 69 transitions, 447 flow [2024-06-28 03:45:45,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=447, PETRI_PLACES=159, PETRI_TRANSITIONS=69} [2024-06-28 03:45:45,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 03:45:45,028 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 69 transitions, 447 flow [2024-06-28 03:45:45,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:45,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:45,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:45,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:45:45,028 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:45,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 232029845, now seen corresponding path program 5 times [2024-06-28 03:45:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55326186] [2024-06-28 03:45:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:46,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:46,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55326186] [2024-06-28 03:45:46,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55326186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:46,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:46,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:46,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727803838] [2024-06-28 03:45:46,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:46,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:46,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:46,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 69 transitions, 447 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:46,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:46,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:46,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:46,792 INFO L124 PetriNetUnfolderBase]: 201/427 cut-off events. [2024-06-28 03:45:46,792 INFO L125 PetriNetUnfolderBase]: For 27318/27318 co-relation queries the response was YES. [2024-06-28 03:45:46,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 427 events. 201/427 cut-off events. For 27318/27318 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1858 event pairs, 63 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 2062. Up to 350 conditions per place. [2024-06-28 03:45:46,794 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 12 changer transitions 11/86 dead transitions. [2024-06-28 03:45:46,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 86 transitions, 661 flow [2024-06-28 03:45:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 03:45:46,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31212121212121213 [2024-06-28 03:45:46,795 INFO L175 Difference]: Start difference. First operand has 159 places, 69 transitions, 447 flow. Second operand 11 states and 103 transitions. [2024-06-28 03:45:46,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 86 transitions, 661 flow [2024-06-28 03:45:46,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 86 transitions, 590 flow, removed 14 selfloop flow, removed 21 redundant places. [2024-06-28 03:45:46,824 INFO L231 Difference]: Finished difference. Result has 129 places, 66 transitions, 397 flow [2024-06-28 03:45:46,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=397, PETRI_PLACES=129, PETRI_TRANSITIONS=66} [2024-06-28 03:45:46,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-28 03:45:46,824 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 66 transitions, 397 flow [2024-06-28 03:45:46,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:46,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:46,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:45:46,824 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:46,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash 231885695, now seen corresponding path program 6 times [2024-06-28 03:45:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177333551] [2024-06-28 03:45:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:48,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177333551] [2024-06-28 03:45:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177333551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790004600] [2024-06-28 03:45:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:48,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:48,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:48,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 66 transitions, 397 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:48,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:48,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:48,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:48,467 INFO L124 PetriNetUnfolderBase]: 191/409 cut-off events. [2024-06-28 03:45:48,467 INFO L125 PetriNetUnfolderBase]: For 21163/21163 co-relation queries the response was YES. [2024-06-28 03:45:48,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 409 events. 191/409 cut-off events. For 21163/21163 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1757 event pairs, 61 based on Foata normal form. 6/414 useless extension candidates. Maximal degree in co-relation 1831. Up to 332 conditions per place. [2024-06-28 03:45:48,469 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 10 changer transitions 14/83 dead transitions. [2024-06-28 03:45:48,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 83 transitions, 597 flow [2024-06-28 03:45:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 03:45:48,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-28 03:45:48,470 INFO L175 Difference]: Start difference. First operand has 129 places, 66 transitions, 397 flow. Second operand 11 states and 102 transitions. [2024-06-28 03:45:48,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 83 transitions, 597 flow [2024-06-28 03:45:48,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 83 transitions, 567 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:48,489 INFO L231 Difference]: Finished difference. Result has 125 places, 62 transitions, 372 flow [2024-06-28 03:45:48,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=372, PETRI_PLACES=125, PETRI_TRANSITIONS=62} [2024-06-28 03:45:48,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-28 03:45:48,489 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 62 transitions, 372 flow [2024-06-28 03:45:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:48,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:48,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:45:48,490 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:48,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash -19944905, now seen corresponding path program 7 times [2024-06-28 03:45:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168293748] [2024-06-28 03:45:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168293748] [2024-06-28 03:45:49,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168293748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:49,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:49,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086829209] [2024-06-28 03:45:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:49,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:49,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 62 transitions, 372 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:49,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:49,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:49,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:49,793 INFO L124 PetriNetUnfolderBase]: 177/383 cut-off events. [2024-06-28 03:45:49,793 INFO L125 PetriNetUnfolderBase]: For 19193/19193 co-relation queries the response was YES. [2024-06-28 03:45:49,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 383 events. 177/383 cut-off events. For 19193/19193 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1617 event pairs, 59 based on Foata normal form. 6/388 useless extension candidates. Maximal degree in co-relation 1721. Up to 311 conditions per place. [2024-06-28 03:45:49,795 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 8 changer transitions 16/78 dead transitions. [2024-06-28 03:45:49,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 78 transitions, 560 flow [2024-06-28 03:45:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:45:49,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 03:45:49,796 INFO L175 Difference]: Start difference. First operand has 125 places, 62 transitions, 372 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:45:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 78 transitions, 560 flow [2024-06-28 03:45:49,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 78 transitions, 532 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:49,812 INFO L231 Difference]: Finished difference. Result has 119 places, 57 transitions, 340 flow [2024-06-28 03:45:49,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=340, PETRI_PLACES=119, PETRI_TRANSITIONS=57} [2024-06-28 03:45:49,812 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-28 03:45:49,812 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 57 transitions, 340 flow [2024-06-28 03:45:49,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:49,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:49,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:49,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:45:49,813 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:49,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash 228310775, now seen corresponding path program 8 times [2024-06-28 03:45:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317544353] [2024-06-28 03:45:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317544353] [2024-06-28 03:45:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317544353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296722570] [2024-06-28 03:45:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:50,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:50,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 57 transitions, 340 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:50,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:50,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:50,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:51,038 INFO L124 PetriNetUnfolderBase]: 164/356 cut-off events. [2024-06-28 03:45:51,038 INFO L125 PetriNetUnfolderBase]: For 16425/16425 co-relation queries the response was YES. [2024-06-28 03:45:51,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 356 events. 164/356 cut-off events. For 16425/16425 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1460 event pairs, 55 based on Foata normal form. 6/361 useless extension candidates. Maximal degree in co-relation 1591. Up to 279 conditions per place. [2024-06-28 03:45:51,040 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 3 changer transitions 26/74 dead transitions. [2024-06-28 03:45:51,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 74 transitions, 522 flow [2024-06-28 03:45:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:45:51,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 03:45:51,041 INFO L175 Difference]: Start difference. First operand has 119 places, 57 transitions, 340 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:45:51,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 74 transitions, 522 flow [2024-06-28 03:45:51,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 74 transitions, 496 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:51,055 INFO L231 Difference]: Finished difference. Result has 111 places, 47 transitions, 262 flow [2024-06-28 03:45:51,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=262, PETRI_PLACES=111, PETRI_TRANSITIONS=47} [2024-06-28 03:45:51,056 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-28 03:45:51,056 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 47 transitions, 262 flow [2024-06-28 03:45:51,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:51,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:51,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:51,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:45:51,056 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:51,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1600535875, now seen corresponding path program 9 times [2024-06-28 03:45:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:51,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839362601] [2024-06-28 03:45:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:52,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:52,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839362601] [2024-06-28 03:45:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839362601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550744691] [2024-06-28 03:45:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:52,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:52,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 47 transitions, 262 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:52,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:52,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:52,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:52,382 INFO L124 PetriNetUnfolderBase]: 142/307 cut-off events. [2024-06-28 03:45:52,382 INFO L125 PetriNetUnfolderBase]: For 13024/13024 co-relation queries the response was YES. [2024-06-28 03:45:52,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 307 events. 142/307 cut-off events. For 13024/13024 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1229 event pairs, 51 based on Foata normal form. 6/313 useless extension candidates. Maximal degree in co-relation 1363. Up to 208 conditions per place. [2024-06-28 03:45:52,383 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 37 selfloop transitions, 12 changer transitions 11/62 dead transitions. [2024-06-28 03:45:52,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 62 transitions, 414 flow [2024-06-28 03:45:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:45:52,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-06-28 03:45:52,384 INFO L175 Difference]: Start difference. First operand has 111 places, 47 transitions, 262 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:45:52,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 62 transitions, 414 flow [2024-06-28 03:45:52,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 62 transitions, 386 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-28 03:45:52,394 INFO L231 Difference]: Finished difference. Result has 93 places, 42 transitions, 237 flow [2024-06-28 03:45:52,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=93, PETRI_TRANSITIONS=42} [2024-06-28 03:45:52,394 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-28 03:45:52,394 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 42 transitions, 237 flow [2024-06-28 03:45:52,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:52,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:52,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:52,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:45:52,395 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:52,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -811131243, now seen corresponding path program 10 times [2024-06-28 03:45:52,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:52,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004584168] [2024-06-28 03:45:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:52,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:53,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004584168] [2024-06-28 03:45:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004584168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:53,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:53,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344532144] [2024-06-28 03:45:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:53,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:53,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:53,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 42 transitions, 237 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:53,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:53,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:53,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:53,667 INFO L124 PetriNetUnfolderBase]: 114/247 cut-off events. [2024-06-28 03:45:53,667 INFO L125 PetriNetUnfolderBase]: For 6534/6534 co-relation queries the response was YES. [2024-06-28 03:45:53,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999 conditions, 247 events. 114/247 cut-off events. For 6534/6534 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 891 event pairs, 40 based on Foata normal form. 6/253 useless extension candidates. Maximal degree in co-relation 964. Up to 191 conditions per place. [2024-06-28 03:45:53,668 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 32 selfloop transitions, 4 changer transitions 17/55 dead transitions. [2024-06-28 03:45:53,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 55 transitions, 371 flow [2024-06-28 03:45:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-28 03:45:53,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28484848484848485 [2024-06-28 03:45:53,668 INFO L175 Difference]: Start difference. First operand has 93 places, 42 transitions, 237 flow. Second operand 11 states and 94 transitions. [2024-06-28 03:45:53,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 55 transitions, 371 flow [2024-06-28 03:45:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 55 transitions, 337 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:45:53,674 INFO L231 Difference]: Finished difference. Result has 85 places, 36 transitions, 186 flow [2024-06-28 03:45:53,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=85, PETRI_TRANSITIONS=36} [2024-06-28 03:45:53,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-28 03:45:53,674 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 36 transitions, 186 flow [2024-06-28 03:45:53,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:53,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:53,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:45:53,674 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:53,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1255545695, now seen corresponding path program 11 times [2024-06-28 03:45:53,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:53,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991795738] [2024-06-28 03:45:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991795738] [2024-06-28 03:45:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991795738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515157411] [2024-06-28 03:45:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:55,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:55,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 36 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:55,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:55,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:55,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:55,364 INFO L124 PetriNetUnfolderBase]: 103/222 cut-off events. [2024-06-28 03:45:55,364 INFO L125 PetriNetUnfolderBase]: For 4720/4720 co-relation queries the response was YES. [2024-06-28 03:45:55,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 222 events. 103/222 cut-off events. For 4720/4720 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 763 event pairs, 36 based on Foata normal form. 6/228 useless extension candidates. Maximal degree in co-relation 828. Up to 156 conditions per place. [2024-06-28 03:45:55,365 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 29 selfloop transitions, 9 changer transitions 11/51 dead transitions. [2024-06-28 03:45:55,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 51 transitions, 316 flow [2024-06-28 03:45:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-28 03:45:55,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296969696969697 [2024-06-28 03:45:55,366 INFO L175 Difference]: Start difference. First operand has 85 places, 36 transitions, 186 flow. Second operand 11 states and 98 transitions. [2024-06-28 03:45:55,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 51 transitions, 316 flow [2024-06-28 03:45:55,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 51 transitions, 300 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:45:55,369 INFO L231 Difference]: Finished difference. Result has 75 places, 33 transitions, 177 flow [2024-06-28 03:45:55,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=177, PETRI_PLACES=75, PETRI_TRANSITIONS=33} [2024-06-28 03:45:55,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-28 03:45:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 33 transitions, 177 flow [2024-06-28 03:45:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:55,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:55,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:45:55,370 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:55,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1255401545, now seen corresponding path program 12 times [2024-06-28 03:45:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297502073] [2024-06-28 03:45:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297502073] [2024-06-28 03:45:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297502073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56642366] [2024-06-28 03:45:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:56,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:56,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 33 transitions, 177 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:57,073 INFO L124 PetriNetUnfolderBase]: 93/204 cut-off events. [2024-06-28 03:45:57,073 INFO L125 PetriNetUnfolderBase]: For 3574/3574 co-relation queries the response was YES. [2024-06-28 03:45:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 204 events. 93/204 cut-off events. For 3574/3574 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 685 event pairs, 34 based on Foata normal form. 6/210 useless extension candidates. Maximal degree in co-relation 756. Up to 138 conditions per place. [2024-06-28 03:45:57,074 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 25 selfloop transitions, 7 changer transitions 14/48 dead transitions. [2024-06-28 03:45:57,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 48 transitions, 301 flow [2024-06-28 03:45:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-28 03:45:57,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29393939393939394 [2024-06-28 03:45:57,075 INFO L175 Difference]: Start difference. First operand has 75 places, 33 transitions, 177 flow. Second operand 11 states and 97 transitions. [2024-06-28 03:45:57,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 48 transitions, 301 flow [2024-06-28 03:45:57,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 48 transitions, 277 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:57,077 INFO L231 Difference]: Finished difference. Result has 71 places, 29 transitions, 152 flow [2024-06-28 03:45:57,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=152, PETRI_PLACES=71, PETRI_TRANSITIONS=29} [2024-06-28 03:45:57,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 03:45:57,077 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 29 transitions, 152 flow [2024-06-28 03:45:57,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:57,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:57,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:57,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:45:57,078 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:57,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1754151945, now seen corresponding path program 13 times [2024-06-28 03:45:57,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:57,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310781946] [2024-06-28 03:45:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:57,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:58,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:58,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310781946] [2024-06-28 03:45:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310781946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:58,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:58,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:58,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103670070] [2024-06-28 03:45:58,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:58,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:58,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:58,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:58,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 29 transitions, 152 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:58,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:58,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:58,478 INFO L124 PetriNetUnfolderBase]: 64/145 cut-off events. [2024-06-28 03:45:58,479 INFO L125 PetriNetUnfolderBase]: For 1932/1932 co-relation queries the response was YES. [2024-06-28 03:45:58,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 145 events. 64/145 cut-off events. For 1932/1932 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 406 event pairs, 19 based on Foata normal form. 6/151 useless extension candidates. Maximal degree in co-relation 478. Up to 84 conditions per place. [2024-06-28 03:45:58,479 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 22 selfloop transitions, 8 changer transitions 11/43 dead transitions. [2024-06-28 03:45:58,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 43 transitions, 264 flow [2024-06-28 03:45:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 03:45:58,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-28 03:45:58,480 INFO L175 Difference]: Start difference. First operand has 71 places, 29 transitions, 152 flow. Second operand 11 states and 95 transitions. [2024-06-28 03:45:58,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 43 transitions, 264 flow [2024-06-28 03:45:58,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 43 transitions, 242 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:58,482 INFO L231 Difference]: Finished difference. Result has 65 places, 26 transitions, 134 flow [2024-06-28 03:45:58,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=26} [2024-06-28 03:45:58,482 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-28 03:45:58,482 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 26 transitions, 134 flow [2024-06-28 03:45:58,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:58,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:45:58,483 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:58,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1251826625, now seen corresponding path program 14 times [2024-06-28 03:45:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212959011] [2024-06-28 03:45:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:59,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:59,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212959011] [2024-06-28 03:45:59,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212959011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:59,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:59,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:45:59,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606614460] [2024-06-28 03:45:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:59,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:45:59,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:59,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:45:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:45:59,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:45:59,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 26 transitions, 134 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:59,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:59,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:45:59,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:59,836 INFO L124 PetriNetUnfolderBase]: 54/127 cut-off events. [2024-06-28 03:45:59,836 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2024-06-28 03:45:59,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 127 events. 54/127 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 326 event pairs, 15 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 412. Up to 61 conditions per place. [2024-06-28 03:45:59,837 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 5 changer transitions 17/41 dead transitions. [2024-06-28 03:45:59,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 41 transitions, 244 flow [2024-06-28 03:45:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 03:45:59,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2024-06-28 03:45:59,838 INFO L175 Difference]: Start difference. First operand has 65 places, 26 transitions, 134 flow. Second operand 11 states and 95 transitions. [2024-06-28 03:45:59,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 41 transitions, 244 flow [2024-06-28 03:45:59,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 41 transitions, 222 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:59,839 INFO L231 Difference]: Finished difference. Result has 60 places, 21 transitions, 102 flow [2024-06-28 03:45:59,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=102, PETRI_PLACES=60, PETRI_TRANSITIONS=21} [2024-06-28 03:45:59,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 03:45:59,840 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 21 transitions, 102 flow [2024-06-28 03:45:59,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:59,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:59,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:59,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:45:59,840 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:59,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:59,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2042757717, now seen corresponding path program 15 times [2024-06-28 03:45:59,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:59,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295547497] [2024-06-28 03:45:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:01,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:01,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295547497] [2024-06-28 03:46:01,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295547497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:01,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:01,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:01,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578524116] [2024-06-28 03:46:01,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:01,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-28 03:46:01,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 21 transitions, 102 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:01,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:01,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-28 03:46:01,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:01,416 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-28 03:46:01,416 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2024-06-28 03:46:01,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 62 events. 23/62 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 160. Up to 24 conditions per place. [2024-06-28 03:46:01,416 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-28 03:46:01,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 29 transitions, 146 flow [2024-06-28 03:46:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 83 transitions. [2024-06-28 03:46:01,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2515151515151515 [2024-06-28 03:46:01,417 INFO L175 Difference]: Start difference. First operand has 60 places, 21 transitions, 102 flow. Second operand 11 states and 83 transitions. [2024-06-28 03:46:01,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 29 transitions, 146 flow [2024-06-28 03:46:01,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-28 03:46:01,418 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-28 03:46:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-28 03:46:01,418 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 03:46:01,418 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-28 03:46:01,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:01,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:46:01,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:46:01,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:46:01,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:46:01,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:46:01,421 INFO L445 BasicCegarLoop]: Path program histogram: [20, 17, 15, 10, 10, 10, 6, 6, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:01,423 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:46:01,424 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:46:01,426 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:46:01,426 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:46:01,427 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:46:01 BasicIcfg [2024-06-28 03:46:01,427 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:46:01,427 INFO L158 Benchmark]: Toolchain (without parser) took 149366.09ms. Allocated memory was 163.6MB in the beginning and 815.8MB in the end (delta: 652.2MB). Free memory was 126.0MB in the beginning and 511.2MB in the end (delta: -385.1MB). Peak memory consumption was 267.6MB. Max. memory is 16.1GB. [2024-06-28 03:46:01,427 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:46:01,428 INFO L158 Benchmark]: Witness Parser took 0.41ms. Allocated memory is still 163.6MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:46:01,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.12ms. Allocated memory is still 163.6MB. Free memory was 125.5MB in the beginning and 91.1MB in the end (delta: 34.4MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 03:46:01,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.36ms. Allocated memory is still 163.6MB. Free memory was 91.1MB in the beginning and 87.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:46:01,428 INFO L158 Benchmark]: Boogie Preprocessor took 133.78ms. Allocated memory is still 163.6MB. Free memory was 87.7MB in the beginning and 129.3MB in the end (delta: -41.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-28 03:46:01,428 INFO L158 Benchmark]: RCFGBuilder took 505.74ms. Allocated memory is still 163.6MB. Free memory was 129.3MB in the beginning and 70.6MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-28 03:46:01,429 INFO L158 Benchmark]: TraceAbstraction took 148117.97ms. Allocated memory was 163.6MB in the beginning and 815.8MB in the end (delta: 652.2MB). Free memory was 69.6MB in the beginning and 511.2MB in the end (delta: -441.6MB). Peak memory consumption was 212.7MB. Max. memory is 16.1GB. [2024-06-28 03:46:01,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.41ms. Allocated memory is still 163.6MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.12ms. Allocated memory is still 163.6MB. Free memory was 125.5MB in the beginning and 91.1MB in the end (delta: 34.4MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.36ms. Allocated memory is still 163.6MB. Free memory was 91.1MB in the beginning and 87.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 133.78ms. Allocated memory is still 163.6MB. Free memory was 87.7MB in the beginning and 129.3MB in the end (delta: -41.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 505.74ms. Allocated memory is still 163.6MB. Free memory was 129.3MB in the beginning and 70.6MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 148117.97ms. Allocated memory was 163.6MB in the beginning and 815.8MB in the end (delta: 652.2MB). Free memory was 69.6MB in the beginning and 511.2MB in the end (delta: -441.6MB). Peak memory consumption was 212.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 48 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: 148.0s, OverallIterations: 129, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 48.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6663 SdHoareTripleChecker+Valid, 25.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5661 mSDsluCounter, 4492 SdHoareTripleChecker+Invalid, 21.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3834 mSDsCounter, 1395 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43542 IncrementalHoareTripleChecker+Invalid, 44937 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1395 mSolverCounterUnsat, 658 mSDtfsCounter, 43542 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1355 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 33.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1655occurred in iteration=65, InterpolantAutomatonStates: 1201, 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, 98.0s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 129 NumberOfCheckSat, 1884 ConstructedInterpolants, 0 QuantifiedInterpolants, 83563 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 129 InterpolantComputations, 129 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:46:01,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE