./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:39:41,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:39:41,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:39:41,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:39:41,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:39:41,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:39:41,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:39:41,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:39:41,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:39:41,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:39:41,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:39:41,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:39:41,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:39:41,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:39:41,522 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:39:41,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:39:41,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:39:41,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:39:41,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:39:41,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:39:41,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:39:41,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:39:41,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:39:41,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:39:41,525 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:39:41,525 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:39:41,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:39:41,525 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:39:41,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:39:41,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:39:41,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:39:41,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:39:41,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:39:41,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:39:41,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:39:41,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:39:41,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:39:41,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:39:41,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:39:41,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:39:41,529 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:39:41,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:39:41,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:39:41,529 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:39:41,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:39:41,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:39:41,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:39:41,740 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:39:41,740 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:39:41,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-14 12:39:41,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:39:41,897 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:39:41,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-14 12:39:42,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:39:43,114 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:39:43,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-14 12:39:43,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4117c71b8/c10abc348663487cb9dd0b3a88549a76/FLAG49042fb2e [2024-06-14 12:39:43,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4117c71b8/c10abc348663487cb9dd0b3a88549a76 [2024-06-14 12:39:43,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:39:43,140 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:39:43,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:39:43,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:39:43,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:39:43,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:39:41" (1/2) ... [2024-06-14 12:39:43,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a0587c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:39:43, skipping insertion in model container [2024-06-14 12:39:43,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:39:41" (1/2) ... [2024-06-14 12:39:43,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@eb0c5db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:39:43, skipping insertion in model container [2024-06-14 12:39:43,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:39:43" (2/2) ... [2024-06-14 12:39:43,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a0587c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43, skipping insertion in model container [2024-06-14 12:39:43,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:39:43" (2/2) ... [2024-06-14 12:39:43,150 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:39:43,200 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:39:43,201 INFO L97 edCorrectnessWitness]: Location invariant before [L804-L804] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-06-14 12:39:43,202 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-06-14 12:39:43,202 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:39:43,202 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-14 12:39:43,241 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:39:43,568 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:39:43,578 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:39:43,677 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:39:43,718 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:39:43,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43 WrapperNode [2024-06-14 12:39:43,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:39:43,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:39:43,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:39:43,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:39:43,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,819 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-14 12:39:43,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:39:43,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:39:43,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:39:43,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:39:43,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,878 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:39:43,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:39:43,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:39:43,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:39:43,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:39:43,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (1/1) ... [2024-06-14 12:39:43,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:39:43,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:39:43,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:39:43,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:39:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:39:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:39:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:39:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:39:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:39:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:39:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:39:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:39:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:39:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:39:43,952 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:39:44,044 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:39:44,046 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:39:44,303 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:39:44,304 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:39:44,425 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:39:44,428 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:39:44,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:39:44 BoogieIcfgContainer [2024-06-14 12:39:44,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:39:44,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:39:44,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:39:44,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:39:44,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:39:41" (1/4) ... [2024-06-14 12:39:44,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e835806 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:39:44, skipping insertion in model container [2024-06-14 12:39:44,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:39:43" (2/4) ... [2024-06-14 12:39:44,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e835806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:39:44, skipping insertion in model container [2024-06-14 12:39:44,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:43" (3/4) ... [2024-06-14 12:39:44,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e835806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:39:44, skipping insertion in model container [2024-06-14 12:39:44,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:39:44" (4/4) ... [2024-06-14 12:39:44,442 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-14 12:39:44,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:39:44,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:39:44,455 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:39:44,489 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:39:44,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:39:44,538 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 12:39:44,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:39:44,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:39:44,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:39:44,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 12:39:44,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:39:44,560 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;@1818dd3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:39:44,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:39:44,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:39:44,563 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:39:44,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:39:44,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:44,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:39:44,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:44,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1600259855, now seen corresponding path program 1 times [2024-06-14 12:39:44,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:44,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731519220] [2024-06-14 12:39:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:44,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731519220] [2024-06-14 12:39:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731519220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:45,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:39:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673119887] [2024-06-14 12:39:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:45,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:39:45,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:39:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:39:45,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:39:45,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:45,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:45,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:39:45,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:45,741 INFO L124 PetriNetUnfolderBase]: 162/317 cut-off events. [2024-06-14 12:39:45,742 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:39:45,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 317 events. 162/317 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1162 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-14 12:39:45,747 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:39:45,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-14 12:39:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:39:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:39:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-14 12:39:45,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-14 12:39:45,757 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-14 12:39:45,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-14 12:39:45,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:39:45,761 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 12:39:45,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 12:39:45,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 12:39:45,765 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 12:39:45,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:45,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:45,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:45,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:39:45,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:45,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash 251680094, now seen corresponding path program 1 times [2024-06-14 12:39:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289754914] [2024-06-14 12:39:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289754914] [2024-06-14 12:39:46,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289754914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:46,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:39:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154915260] [2024-06-14 12:39:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:46,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:39:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:39:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:39:46,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:39:46,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:46,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:46,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:39:46,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:46,399 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-14 12:39:46,399 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-14 12:39:46,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1350 event pairs, 109 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-14 12:39:46,404 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 12:39:46,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-14 12:39:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:39:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:39:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-14 12:39:46,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-14 12:39:46,407 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-14 12:39:46,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-14 12:39:46,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:39:46,411 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 12:39:46,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 12:39:46,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 12:39:46,412 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 12:39:46,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:46,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:46,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:39:46,413 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)] === [2024-06-14 12:39:46,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash -795000808, now seen corresponding path program 1 times [2024-06-14 12:39:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996167482] [2024-06-14 12:39:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:46,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996167482] [2024-06-14 12:39:46,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996167482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:46,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:39:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311879090] [2024-06-14 12:39:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:39:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:39:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:39:46,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:39:46,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:46,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:46,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:39:46,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:47,037 INFO L124 PetriNetUnfolderBase]: 207/372 cut-off events. [2024-06-14 12:39:47,037 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-14 12:39:47,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 372 events. 207/372 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1297 event pairs, 61 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 930. Up to 336 conditions per place. [2024-06-14 12:39:47,039 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-14 12:39:47,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 219 flow [2024-06-14 12:39:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:39:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:39:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-14 12:39:47,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-14 12:39:47,041 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 73 transitions. [2024-06-14 12:39:47,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 219 flow [2024-06-14 12:39:47,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:39:47,043 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-14 12:39:47,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-14 12:39:47,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-14 12:39:47,044 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-14 12:39:47,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:47,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:47,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:47,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:39:47,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:47,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash 508425943, now seen corresponding path program 1 times [2024-06-14 12:39:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505926749] [2024-06-14 12:39:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505926749] [2024-06-14 12:39:47,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505926749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:47,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:39:47,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863418761] [2024-06-14 12:39:47,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:47,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:39:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:39:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:39:47,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:39:47,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 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) [2024-06-14 12:39:47,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:47,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:39:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:47,975 INFO L124 PetriNetUnfolderBase]: 203/364 cut-off events. [2024-06-14 12:39:47,976 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-06-14 12:39:47,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 364 events. 203/364 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1244 event pairs, 36 based on Foata normal form. 4/366 useless extension candidates. Maximal degree in co-relation 990. Up to 310 conditions per place. [2024-06-14 12:39:47,979 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 12:39:47,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 233 flow [2024-06-14 12:39:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:39:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:39:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-14 12:39:47,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:39:47,982 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 80 transitions. [2024-06-14 12:39:47,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 233 flow [2024-06-14 12:39:47,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 218 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:39:47,984 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 118 flow [2024-06-14 12:39:47,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=6, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-06-14 12:39:47,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 12:39:47,986 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 118 flow [2024-06-14 12:39:47,986 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) [2024-06-14 12:39:47,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:47,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:47,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:39:47,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:47,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 234560243, now seen corresponding path program 1 times [2024-06-14 12:39:47,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254039798] [2024-06-14 12:39:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:47,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:48,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:48,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254039798] [2024-06-14 12:39:48,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254039798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:48,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:48,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:39:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812568066] [2024-06-14 12:39:48,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:48,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:39:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:39:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:39:48,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:39:48,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:48,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:48,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:39:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:48,676 INFO L124 PetriNetUnfolderBase]: 147/295 cut-off events. [2024-06-14 12:39:48,677 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-14 12:39:48,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 295 events. 147/295 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1064 event pairs, 53 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-14 12:39:48,678 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-14 12:39:48,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 200 flow [2024-06-14 12:39:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:39:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:39:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-14 12:39:48,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:39:48,680 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 118 flow. Second operand 5 states and 64 transitions. [2024-06-14 12:39:48,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 200 flow [2024-06-14 12:39:48,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 180 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:39:48,681 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 125 flow [2024-06-14 12:39:48,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-14 12:39:48,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-14 12:39:48,682 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 125 flow [2024-06-14 12:39:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:48,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:48,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:48,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:39:48,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:48,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1318565773, now seen corresponding path program 1 times [2024-06-14 12:39:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:48,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402593529] [2024-06-14 12:39:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402593529] [2024-06-14 12:39:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402593529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:49,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:39:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394333573] [2024-06-14 12:39:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:49,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:39:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:39:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:39:49,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:49,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:49,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:49,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:49,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:49,453 INFO L124 PetriNetUnfolderBase]: 203/366 cut-off events. [2024-06-14 12:39:49,453 INFO L125 PetriNetUnfolderBase]: For 708/711 co-relation queries the response was YES. [2024-06-14 12:39:49,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 366 events. 203/366 cut-off events. For 708/711 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1269 event pairs, 74 based on Foata normal form. 4/367 useless extension candidates. Maximal degree in co-relation 1086. Up to 327 conditions per place. [2024-06-14 12:39:49,456 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 30 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2024-06-14 12:39:49,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 257 flow [2024-06-14 12:39:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:39:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:39:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-14 12:39:49,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:39:49,458 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 125 flow. Second operand 6 states and 69 transitions. [2024-06-14 12:39:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 257 flow [2024-06-14 12:39:49,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 246 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:39:49,461 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 182 flow [2024-06-14 12:39:49,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-06-14 12:39:49,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-14 12:39:49,463 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 182 flow [2024-06-14 12:39:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:49,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:39:49,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:49,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -591469422, now seen corresponding path program 1 times [2024-06-14 12:39:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910876544] [2024-06-14 12:39:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:50,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:50,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910876544] [2024-06-14 12:39:50,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910876544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:50,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:50,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:39:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324404686] [2024-06-14 12:39:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:50,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:39:50,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:39:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:39:50,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:50,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:50,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:50,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:50,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:50,207 INFO L124 PetriNetUnfolderBase]: 210/378 cut-off events. [2024-06-14 12:39:50,207 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2024-06-14 12:39:50,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 378 events. 210/378 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1298 event pairs, 75 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1277. Up to 354 conditions per place. [2024-06-14 12:39:50,209 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-14 12:39:50,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 340 flow [2024-06-14 12:39:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-14 12:39:50,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2024-06-14 12:39:50,210 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 182 flow. Second operand 7 states and 76 transitions. [2024-06-14 12:39:50,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 340 flow [2024-06-14 12:39:50,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 326 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:39:50,213 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 237 flow [2024-06-14 12:39:50,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-14 12:39:50,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-14 12:39:50,214 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 237 flow [2024-06-14 12:39:50,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:50,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:50,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:50,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:39:50,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:50,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:50,215 INFO L85 PathProgramCache]: Analyzing trace with hash -183400814, now seen corresponding path program 2 times [2024-06-14 12:39:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058339264] [2024-06-14 12:39:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:50,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:50,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058339264] [2024-06-14 12:39:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058339264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:50,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:39:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392973865] [2024-06-14 12:39:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:39:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:39:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:39:50,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:50,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:50,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:50,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:50,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:50,889 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-14 12:39:50,889 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-06-14 12:39:50,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 383 events. 213/383 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1323 event pairs, 74 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1386. Up to 356 conditions per place. [2024-06-14 12:39:50,891 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-14 12:39:50,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 378 flow [2024-06-14 12:39:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:39:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:39:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-14 12:39:50,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 12:39:50,893 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 237 flow. Second operand 6 states and 67 transitions. [2024-06-14 12:39:50,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 378 flow [2024-06-14 12:39:50,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 357 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:39:50,895 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 271 flow [2024-06-14 12:39:50,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-14 12:39:50,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-14 12:39:50,896 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 271 flow [2024-06-14 12:39:50,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:50,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:50,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:50,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:39:50,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:50,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:50,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2074127378, now seen corresponding path program 3 times [2024-06-14 12:39:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:50,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686870801] [2024-06-14 12:39:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:50,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:51,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:51,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686870801] [2024-06-14 12:39:51,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686870801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:51,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:39:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526409328] [2024-06-14 12:39:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:39:51,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:51,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:39:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:39:51,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:51,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:51,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:51,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:51,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:51,629 INFO L124 PetriNetUnfolderBase]: 208/376 cut-off events. [2024-06-14 12:39:51,629 INFO L125 PetriNetUnfolderBase]: For 1694/1697 co-relation queries the response was YES. [2024-06-14 12:39:51,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 376 events. 208/376 cut-off events. For 1694/1697 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1298 event pairs, 77 based on Foata normal form. 4/376 useless extension candidates. Maximal degree in co-relation 1393. Up to 329 conditions per place. [2024-06-14 12:39:51,631 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 16 changer transitions 0/50 dead transitions. [2024-06-14 12:39:51,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 383 flow [2024-06-14 12:39:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:39:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:39:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-14 12:39:51,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:39:51,632 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 271 flow. Second operand 6 states and 68 transitions. [2024-06-14 12:39:51,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 383 flow [2024-06-14 12:39:51,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 353 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:39:51,636 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 280 flow [2024-06-14 12:39:51,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-14 12:39:51,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-14 12:39:51,637 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 280 flow [2024-06-14 12:39:51,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:51,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:51,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:39:51,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:51,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:51,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2074135314, now seen corresponding path program 1 times [2024-06-14 12:39:51,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52728261] [2024-06-14 12:39:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:52,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52728261] [2024-06-14 12:39:52,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52728261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:52,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:52,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:52,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568738838] [2024-06-14 12:39:52,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:52,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:52,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:52,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:52,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:52,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:52,371 INFO L124 PetriNetUnfolderBase]: 209/378 cut-off events. [2024-06-14 12:39:52,371 INFO L125 PetriNetUnfolderBase]: For 1612/1615 co-relation queries the response was YES. [2024-06-14 12:39:52,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 378 events. 209/378 cut-off events. For 1612/1615 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1301 event pairs, 75 based on Foata normal form. 4/378 useless extension candidates. Maximal degree in co-relation 1397. Up to 319 conditions per place. [2024-06-14 12:39:52,373 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 33 selfloop transitions, 22 changer transitions 0/57 dead transitions. [2024-06-14 12:39:52,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 450 flow [2024-06-14 12:39:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:39:52,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 12:39:52,375 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 280 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:39:52,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 450 flow [2024-06-14 12:39:52,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 405 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:39:52,377 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 315 flow [2024-06-14 12:39:52,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-14 12:39:52,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-14 12:39:52,378 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 315 flow [2024-06-14 12:39:52,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:52,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:52,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:52,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:39:52,379 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:52,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1053655576, now seen corresponding path program 1 times [2024-06-14 12:39:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474770745] [2024-06-14 12:39:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474770745] [2024-06-14 12:39:52,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474770745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:52,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:52,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:52,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230478842] [2024-06-14 12:39:52,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:52,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:52,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:52,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:52,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:52,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 315 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:53,161 INFO L124 PetriNetUnfolderBase]: 215/387 cut-off events. [2024-06-14 12:39:53,162 INFO L125 PetriNetUnfolderBase]: For 1996/1996 co-relation queries the response was YES. [2024-06-14 12:39:53,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 387 events. 215/387 cut-off events. For 1996/1996 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1337 event pairs, 50 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1511. Up to 339 conditions per place. [2024-06-14 12:39:53,164 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 51 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2024-06-14 12:39:53,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 501 flow [2024-06-14 12:39:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:39:53,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-14 12:39:53,165 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 315 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:39:53,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 501 flow [2024-06-14 12:39:53,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 476 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:39:53,168 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 349 flow [2024-06-14 12:39:53,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-14 12:39:53,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 12:39:53,169 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 349 flow [2024-06-14 12:39:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:53,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:53,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:39:53,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash 723507234, now seen corresponding path program 2 times [2024-06-14 12:39:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969992] [2024-06-14 12:39:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:53,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969992] [2024-06-14 12:39:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:53,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:53,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037357379] [2024-06-14 12:39:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:53,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:53,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:53,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 349 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:53,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:53,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:53,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:53,925 INFO L124 PetriNetUnfolderBase]: 226/405 cut-off events. [2024-06-14 12:39:53,925 INFO L125 PetriNetUnfolderBase]: For 2515/2515 co-relation queries the response was YES. [2024-06-14 12:39:53,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 405 events. 226/405 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1419 event pairs, 50 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 1717. Up to 339 conditions per place. [2024-06-14 12:39:53,928 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-14 12:39:53,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 571 flow [2024-06-14 12:39:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 12:39:53,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 12:39:53,929 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 349 flow. Second operand 7 states and 81 transitions. [2024-06-14 12:39:53,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 571 flow [2024-06-14 12:39:53,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 552 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 12:39:53,932 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 406 flow [2024-06-14 12:39:53,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-14 12:39:53,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:39:53,933 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 406 flow [2024-06-14 12:39:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:53,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:53,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:53,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:39:53,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:53,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash -126559622, now seen corresponding path program 3 times [2024-06-14 12:39:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938192313] [2024-06-14 12:39:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938192313] [2024-06-14 12:39:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938192313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:54,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817696520] [2024-06-14 12:39:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:54,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:54,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:54,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 406 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:54,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:54,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:54,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:54,701 INFO L124 PetriNetUnfolderBase]: 228/411 cut-off events. [2024-06-14 12:39:54,701 INFO L125 PetriNetUnfolderBase]: For 3139/3139 co-relation queries the response was YES. [2024-06-14 12:39:54,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 411 events. 228/411 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1458 event pairs, 59 based on Foata normal form. 4/410 useless extension candidates. Maximal degree in co-relation 1799. Up to 288 conditions per place. [2024-06-14 12:39:54,704 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 22 changer transitions 0/72 dead transitions. [2024-06-14 12:39:54,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 630 flow [2024-06-14 12:39:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 12:39:54,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-14 12:39:54,705 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 406 flow. Second operand 7 states and 83 transitions. [2024-06-14 12:39:54,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 630 flow [2024-06-14 12:39:54,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 609 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:39:54,708 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 475 flow [2024-06-14 12:39:54,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-06-14 12:39:54,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 12:39:54,709 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 475 flow [2024-06-14 12:39:54,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:54,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:54,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:54,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:39:54,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:54,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash -126313358, now seen corresponding path program 1 times [2024-06-14 12:39:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877301119] [2024-06-14 12:39:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:54,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877301119] [2024-06-14 12:39:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877301119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:55,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:39:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368812363] [2024-06-14 12:39:55,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:55,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:39:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:39:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:39:55,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:55,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 475 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:55,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:55,518 INFO L124 PetriNetUnfolderBase]: 229/412 cut-off events. [2024-06-14 12:39:55,518 INFO L125 PetriNetUnfolderBase]: For 3445/3451 co-relation queries the response was YES. [2024-06-14 12:39:55,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 412 events. 229/412 cut-off events. For 3445/3451 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1457 event pairs, 52 based on Foata normal form. 6/414 useless extension candidates. Maximal degree in co-relation 1905. Up to 340 conditions per place. [2024-06-14 12:39:55,521 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 26 changer transitions 0/76 dead transitions. [2024-06-14 12:39:55,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 699 flow [2024-06-14 12:39:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:39:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:39:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:39:55,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 12:39:55,522 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 475 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:39:55,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 699 flow [2024-06-14 12:39:55,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 669 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:39:55,527 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 539 flow [2024-06-14 12:39:55,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-06-14 12:39:55,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 12:39:55,527 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 539 flow [2024-06-14 12:39:55,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:55,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:55,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:55,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:39:55,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:55,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1111024951, now seen corresponding path program 1 times [2024-06-14 12:39:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444726813] [2024-06-14 12:39:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:55,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:56,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:56,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444726813] [2024-06-14 12:39:56,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444726813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:56,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:56,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:39:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711929241] [2024-06-14 12:39:56,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:56,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:39:56,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:39:56,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:39:56,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:56,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 539 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:56,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:56,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:56,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:56,519 INFO L124 PetriNetUnfolderBase]: 227/408 cut-off events. [2024-06-14 12:39:56,520 INFO L125 PetriNetUnfolderBase]: For 3686/3686 co-relation queries the response was YES. [2024-06-14 12:39:56,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 408 events. 227/408 cut-off events. For 3686/3686 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1440 event pairs, 48 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1977. Up to 357 conditions per place. [2024-06-14 12:39:56,522 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-06-14 12:39:56,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 733 flow [2024-06-14 12:39:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:39:56,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-14 12:39:56,523 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 539 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:39:56,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 733 flow [2024-06-14 12:39:56,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 696 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 12:39:56,527 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 540 flow [2024-06-14 12:39:56,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-14 12:39:56,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-14 12:39:56,529 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 540 flow [2024-06-14 12:39:56,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:56,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:56,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:56,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:39:56,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:56,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash -824633674, now seen corresponding path program 1 times [2024-06-14 12:39:56,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:56,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729051435] [2024-06-14 12:39:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:56,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:57,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:57,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729051435] [2024-06-14 12:39:57,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729051435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:57,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:57,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:57,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896280825] [2024-06-14 12:39:57,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:57,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:57,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:57,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:57,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:57,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:57,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:57,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:57,279 INFO L124 PetriNetUnfolderBase]: 233/420 cut-off events. [2024-06-14 12:39:57,279 INFO L125 PetriNetUnfolderBase]: For 4365/4371 co-relation queries the response was YES. [2024-06-14 12:39:57,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 420 events. 233/420 cut-off events. For 4365/4371 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1522 event pairs, 54 based on Foata normal form. 6/421 useless extension candidates. Maximal degree in co-relation 2069. Up to 362 conditions per place. [2024-06-14 12:39:57,282 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-06-14 12:39:57,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 750 flow [2024-06-14 12:39:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:39:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:39:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:39:57,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 12:39:57,283 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 540 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:39:57,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 750 flow [2024-06-14 12:39:57,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 712 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:39:57,288 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 557 flow [2024-06-14 12:39:57,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=557, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-14 12:39:57,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-14 12:39:57,289 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 557 flow [2024-06-14 12:39:57,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:57,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:57,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:57,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:39:57,289 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:57,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1613217172, now seen corresponding path program 2 times [2024-06-14 12:39:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132290616] [2024-06-14 12:39:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:57,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132290616] [2024-06-14 12:39:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132290616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263358329] [2024-06-14 12:39:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:57,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:57,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:57,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:57,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:57,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 557 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:57,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:57,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:57,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:58,052 INFO L124 PetriNetUnfolderBase]: 239/430 cut-off events. [2024-06-14 12:39:58,052 INFO L125 PetriNetUnfolderBase]: For 4943/4943 co-relation queries the response was YES. [2024-06-14 12:39:58,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2198 conditions, 430 events. 239/430 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1573 event pairs, 47 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 2158. Up to 301 conditions per place. [2024-06-14 12:39:58,054 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 34 changer transitions 0/86 dead transitions. [2024-06-14 12:39:58,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 848 flow [2024-06-14 12:39:58,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:39:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:39:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 12:39:58,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 12:39:58,056 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 557 flow. Second operand 8 states and 93 transitions. [2024-06-14 12:39:58,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 86 transitions, 848 flow [2024-06-14 12:39:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 807 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:39:58,062 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 634 flow [2024-06-14 12:39:58,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-14 12:39:58,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 12:39:58,062 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 634 flow [2024-06-14 12:39:58,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:58,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:58,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:58,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:39:58,063 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:58,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 702602860, now seen corresponding path program 3 times [2024-06-14 12:39:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:58,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414579464] [2024-06-14 12:39:58,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:58,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414579464] [2024-06-14 12:39:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414579464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:58,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:39:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661952747] [2024-06-14 12:39:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:58,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:39:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:39:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:39:58,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:58,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:58,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:58,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:58,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:58,807 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-14 12:39:58,807 INFO L125 PetriNetUnfolderBase]: For 5393/5393 co-relation queries the response was YES. [2024-06-14 12:39:58,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 432 events. 240/432 cut-off events. For 5393/5393 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1579 event pairs, 53 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2249. Up to 304 conditions per place. [2024-06-14 12:39:58,810 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 32 changer transitions 0/88 dead transitions. [2024-06-14 12:39:58,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 916 flow [2024-06-14 12:39:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:39:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:39:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 12:39:58,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:39:58,811 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 634 flow. Second operand 8 states and 92 transitions. [2024-06-14 12:39:58,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 916 flow [2024-06-14 12:39:58,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 839 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 12:39:58,821 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 651 flow [2024-06-14 12:39:58,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-14 12:39:58,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 12:39:58,822 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 651 flow [2024-06-14 12:39:58,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:58,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:58,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:39:58,822 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:58,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 379244657, now seen corresponding path program 1 times [2024-06-14 12:39:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:58,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544664114] [2024-06-14 12:39:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:58,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:59,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:59,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544664114] [2024-06-14 12:39:59,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544664114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:59,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:59,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:39:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346556731] [2024-06-14 12:39:59,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:59,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:39:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:39:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:39:59,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:39:59,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:59,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:59,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:39:59,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:59,615 INFO L124 PetriNetUnfolderBase]: 243/436 cut-off events. [2024-06-14 12:39:59,615 INFO L125 PetriNetUnfolderBase]: For 5858/5864 co-relation queries the response was YES. [2024-06-14 12:39:59,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 436 events. 243/436 cut-off events. For 5858/5864 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1577 event pairs, 53 based on Foata normal form. 5/437 useless extension candidates. Maximal degree in co-relation 2290. Up to 376 conditions per place. [2024-06-14 12:39:59,618 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 24 changer transitions 0/86 dead transitions. [2024-06-14 12:39:59,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 894 flow [2024-06-14 12:39:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:39:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:39:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:39:59,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-14 12:39:59,620 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 651 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:39:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 894 flow [2024-06-14 12:39:59,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 839 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:39:59,629 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 665 flow [2024-06-14 12:39:59,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-06-14 12:39:59,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 12:39:59,629 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 665 flow [2024-06-14 12:39:59,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:59,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:59,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:59,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:39:59,630 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:39:59,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash 378977747, now seen corresponding path program 2 times [2024-06-14 12:39:59,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:59,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169732945] [2024-06-14 12:39:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:59,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:00,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169732945] [2024-06-14 12:40:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169732945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:00,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:00,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:00,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288469178] [2024-06-14 12:40:00,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:00,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:00,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 665 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:00,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:00,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:00,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:00,333 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2024-06-14 12:40:00,333 INFO L125 PetriNetUnfolderBase]: For 6266/6272 co-relation queries the response was YES. [2024-06-14 12:40:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 433 events. 241/433 cut-off events. For 6266/6272 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1572 event pairs, 53 based on Foata normal form. 5/434 useless extension candidates. Maximal degree in co-relation 2275. Up to 374 conditions per place. [2024-06-14 12:40:00,336 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2024-06-14 12:40:00,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 84 transitions, 850 flow [2024-06-14 12:40:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 12:40:00,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-14 12:40:00,337 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 665 flow. Second operand 7 states and 78 transitions. [2024-06-14 12:40:00,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 84 transitions, 850 flow [2024-06-14 12:40:00,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 796 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:00,344 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 660 flow [2024-06-14 12:40:00,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-06-14 12:40:00,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 12:40:00,344 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 660 flow [2024-06-14 12:40:00,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:00,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:00,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:40:00,345 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:00,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash 379254577, now seen corresponding path program 1 times [2024-06-14 12:40:00,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:00,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142064252] [2024-06-14 12:40:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:00,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142064252] [2024-06-14 12:40:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142064252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:01,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:01,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838110565] [2024-06-14 12:40:01,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:01,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:01,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:01,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:01,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:01,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:01,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:01,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:01,324 INFO L124 PetriNetUnfolderBase]: 242/435 cut-off events. [2024-06-14 12:40:01,325 INFO L125 PetriNetUnfolderBase]: For 6855/6861 co-relation queries the response was YES. [2024-06-14 12:40:01,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 435 events. 242/435 cut-off events. For 6855/6861 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1567 event pairs, 51 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 2287. Up to 356 conditions per place. [2024-06-14 12:40:01,327 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 30 changer transitions 0/90 dead transitions. [2024-06-14 12:40:01,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 925 flow [2024-06-14 12:40:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:40:01,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 12:40:01,329 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 660 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:40:01,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 925 flow [2024-06-14 12:40:01,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 869 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:01,337 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 700 flow [2024-06-14 12:40:01,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=700, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-14 12:40:01,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 12:40:01,337 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 700 flow [2024-06-14 12:40:01,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:01,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:01,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:01,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:40:01,338 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:01,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1648199973, now seen corresponding path program 1 times [2024-06-14 12:40:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:01,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480494197] [2024-06-14 12:40:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480494197] [2024-06-14 12:40:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480494197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828461587] [2024-06-14 12:40:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:02,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:02,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:02,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:02,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:02,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:02,528 INFO L124 PetriNetUnfolderBase]: 246/442 cut-off events. [2024-06-14 12:40:02,528 INFO L125 PetriNetUnfolderBase]: For 7382/7382 co-relation queries the response was YES. [2024-06-14 12:40:02,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 442 events. 246/442 cut-off events. For 7382/7382 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1616 event pairs, 27 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2407. Up to 374 conditions per place. [2024-06-14 12:40:02,531 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 79 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-14 12:40:02,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 937 flow [2024-06-14 12:40:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:40:02,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 12:40:02,532 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 700 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:40:02,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 937 flow [2024-06-14 12:40:02,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 863 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:02,544 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 672 flow [2024-06-14 12:40:02,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=672, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-14 12:40:02,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-14 12:40:02,545 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 672 flow [2024-06-14 12:40:02,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:02,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:02,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:40:02,546 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:02,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -16137679, now seen corresponding path program 1 times [2024-06-14 12:40:02,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:02,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892269516] [2024-06-14 12:40:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:02,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:03,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:03,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892269516] [2024-06-14 12:40:03,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892269516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:03,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:03,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:03,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51812823] [2024-06-14 12:40:03,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:03,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:03,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 672 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:03,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:03,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:03,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:03,499 INFO L124 PetriNetUnfolderBase]: 244/440 cut-off events. [2024-06-14 12:40:03,499 INFO L125 PetriNetUnfolderBase]: For 7662/7668 co-relation queries the response was YES. [2024-06-14 12:40:03,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 440 events. 244/440 cut-off events. For 7662/7668 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1620 event pairs, 47 based on Foata normal form. 5/441 useless extension candidates. Maximal degree in co-relation 2365. Up to 377 conditions per place. [2024-06-14 12:40:03,503 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 71 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-14 12:40:03,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 887 flow [2024-06-14 12:40:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:40:03,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 12:40:03,504 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 672 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:40:03,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 887 flow [2024-06-14 12:40:03,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 847 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:03,513 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 678 flow [2024-06-14 12:40:03,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=678, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-14 12:40:03,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 12:40:03,514 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 678 flow [2024-06-14 12:40:03,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:03,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:03,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:03,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:40:03,514 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:03,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1648139523, now seen corresponding path program 2 times [2024-06-14 12:40:03,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:03,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134365161] [2024-06-14 12:40:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:04,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134365161] [2024-06-14 12:40:04,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134365161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:04,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:04,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:04,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155356226] [2024-06-14 12:40:04,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:04,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:04,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:04,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:04,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 678 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:04,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:04,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:04,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:04,614 INFO L124 PetriNetUnfolderBase]: 248/447 cut-off events. [2024-06-14 12:40:04,614 INFO L125 PetriNetUnfolderBase]: For 8625/8625 co-relation queries the response was YES. [2024-06-14 12:40:04,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 447 events. 248/447 cut-off events. For 8625/8625 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1648 event pairs, 44 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2431. Up to 388 conditions per place. [2024-06-14 12:40:04,617 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 77 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-06-14 12:40:04,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 921 flow [2024-06-14 12:40:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:40:04,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:40:04,619 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 678 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:40:04,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 921 flow [2024-06-14 12:40:04,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 851 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:04,629 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 663 flow [2024-06-14 12:40:04,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, 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=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=663, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-14 12:40:04,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-14 12:40:04,629 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 663 flow [2024-06-14 12:40:04,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:04,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:04,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:04,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:40:04,630 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:04,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -609442249, now seen corresponding path program 1 times [2024-06-14 12:40:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306450991] [2024-06-14 12:40:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:05,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:05,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306450991] [2024-06-14 12:40:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306450991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:05,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743775962] [2024-06-14 12:40:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:05,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:05,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:05,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 663 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:05,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:05,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:05,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:05,403 INFO L124 PetriNetUnfolderBase]: 254/459 cut-off events. [2024-06-14 12:40:05,404 INFO L125 PetriNetUnfolderBase]: For 8779/8785 co-relation queries the response was YES. [2024-06-14 12:40:05,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 459 events. 254/459 cut-off events. For 8779/8785 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1715 event pairs, 49 based on Foata normal form. 6/460 useless extension candidates. Maximal degree in co-relation 2448. Up to 393 conditions per place. [2024-06-14 12:40:05,407 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-14 12:40:05,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 908 flow [2024-06-14 12:40:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:40:05,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:40:05,408 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 663 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:40:05,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 908 flow [2024-06-14 12:40:05,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 865 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:05,418 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 679 flow [2024-06-14 12:40:05,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=679, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-06-14 12:40:05,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-14 12:40:05,419 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 679 flow [2024-06-14 12:40:05,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:05,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:05,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:40:05,421 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:05,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1529867393, now seen corresponding path program 2 times [2024-06-14 12:40:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:05,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563074903] [2024-06-14 12:40:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:05,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:05,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563074903] [2024-06-14 12:40:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563074903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:05,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:05,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:05,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133031516] [2024-06-14 12:40:05,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:05,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:05,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:05,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:05,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:05,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:05,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:05,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:05,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:06,096 INFO L124 PetriNetUnfolderBase]: 270/485 cut-off events. [2024-06-14 12:40:06,096 INFO L125 PetriNetUnfolderBase]: For 9970/9970 co-relation queries the response was YES. [2024-06-14 12:40:06,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 485 events. 270/485 cut-off events. For 9970/9970 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1836 event pairs, 48 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 2643. Up to 300 conditions per place. [2024-06-14 12:40:06,102 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 44 changer transitions 0/103 dead transitions. [2024-06-14 12:40:06,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 1063 flow [2024-06-14 12:40:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:40:06,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 12:40:06,105 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 679 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:40:06,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 1063 flow [2024-06-14 12:40:06,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 1020 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:06,118 INFO L231 Difference]: Finished difference. Result has 101 places, 90 transitions, 787 flow [2024-06-14 12:40:06,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=101, PETRI_TRANSITIONS=90} [2024-06-14 12:40:06,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 12:40:06,120 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 90 transitions, 787 flow [2024-06-14 12:40:06,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:06,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:06,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:06,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:40:06,121 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:06,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1529873903, now seen corresponding path program 3 times [2024-06-14 12:40:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:06,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723584046] [2024-06-14 12:40:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723584046] [2024-06-14 12:40:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723584046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905893714] [2024-06-14 12:40:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:06,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:06,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 90 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:06,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:06,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:06,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:06,978 INFO L124 PetriNetUnfolderBase]: 276/495 cut-off events. [2024-06-14 12:40:06,979 INFO L125 PetriNetUnfolderBase]: For 10919/10919 co-relation queries the response was YES. [2024-06-14 12:40:06,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 495 events. 276/495 cut-off events. For 10919/10919 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1898 event pairs, 52 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2808. Up to 306 conditions per place. [2024-06-14 12:40:06,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 60 selfloop transitions, 43 changer transitions 0/105 dead transitions. [2024-06-14 12:40:06,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 1147 flow [2024-06-14 12:40:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:40:06,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 12:40:06,984 INFO L175 Difference]: Start difference. First operand has 101 places, 90 transitions, 787 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:40:06,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 1147 flow [2024-06-14 12:40:06,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1097 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:06,999 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 850 flow [2024-06-14 12:40:06,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-06-14 12:40:06,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 12:40:06,999 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 850 flow [2024-06-14 12:40:07,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:07,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:07,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:40:07,000 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:07,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:07,001 INFO L85 PathProgramCache]: Analyzing trace with hash -77449981, now seen corresponding path program 3 times [2024-06-14 12:40:07,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:07,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150537725] [2024-06-14 12:40:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:07,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:07,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150537725] [2024-06-14 12:40:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150537725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768084688] [2024-06-14 12:40:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:07,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:07,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:07,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 850 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:07,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:07,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:07,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:07,956 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-14 12:40:07,957 INFO L125 PetriNetUnfolderBase]: For 11861/11861 co-relation queries the response was YES. [2024-06-14 12:40:07,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 501 events. 280/501 cut-off events. For 11861/11861 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1923 event pairs, 46 based on Foata normal form. 2/501 useless extension candidates. Maximal degree in co-relation 2949. Up to 430 conditions per place. [2024-06-14 12:40:07,960 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 83 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-14 12:40:07,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1113 flow [2024-06-14 12:40:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:40:07,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:40:07,963 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 850 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:40:07,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1113 flow [2024-06-14 12:40:07,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 1040 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:07,976 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 841 flow [2024-06-14 12:40:07,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-14 12:40:07,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 12:40:07,977 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 841 flow [2024-06-14 12:40:07,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:07,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:07,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:07,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:40:07,978 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:07,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -494151079, now seen corresponding path program 4 times [2024-06-14 12:40:07,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:07,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050935460] [2024-06-14 12:40:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:07,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:08,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050935460] [2024-06-14 12:40:08,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050935460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:08,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:08,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244001233] [2024-06-14 12:40:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:08,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:08,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 841 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:08,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:08,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:08,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:08,749 INFO L124 PetriNetUnfolderBase]: 281/505 cut-off events. [2024-06-14 12:40:08,749 INFO L125 PetriNetUnfolderBase]: For 12455/12455 co-relation queries the response was YES. [2024-06-14 12:40:08,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 505 events. 281/505 cut-off events. For 12455/12455 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1960 event pairs, 60 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2930. Up to 317 conditions per place. [2024-06-14 12:40:08,752 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 42 changer transitions 0/108 dead transitions. [2024-06-14 12:40:08,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1213 flow [2024-06-14 12:40:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 12:40:08,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-14 12:40:08,755 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 841 flow. Second operand 8 states and 95 transitions. [2024-06-14 12:40:08,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1213 flow [2024-06-14 12:40:08,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1159 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:08,771 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 896 flow [2024-06-14 12:40:08,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=896, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-06-14 12:40:08,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 12:40:08,774 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 896 flow [2024-06-14 12:40:08,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:08,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:08,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:08,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:40:08,774 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:08,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1136597141, now seen corresponding path program 5 times [2024-06-14 12:40:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334073766] [2024-06-14 12:40:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:09,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:09,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334073766] [2024-06-14 12:40:09,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334073766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:09,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:09,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793453308] [2024-06-14 12:40:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:09,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:09,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:09,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 896 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:09,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:09,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:09,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:09,721 INFO L124 PetriNetUnfolderBase]: 287/515 cut-off events. [2024-06-14 12:40:09,722 INFO L125 PetriNetUnfolderBase]: For 13390/13390 co-relation queries the response was YES. [2024-06-14 12:40:09,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 515 events. 287/515 cut-off events. For 13390/13390 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2015 event pairs, 62 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 3053. Up to 323 conditions per place. [2024-06-14 12:40:09,725 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 43 changer transitions 0/109 dead transitions. [2024-06-14 12:40:09,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1276 flow [2024-06-14 12:40:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 12:40:09,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:40:09,726 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 896 flow. Second operand 8 states and 96 transitions. [2024-06-14 12:40:09,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1276 flow [2024-06-14 12:40:09,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 109 transitions, 1220 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:09,740 INFO L231 Difference]: Finished difference. Result has 115 places, 97 transitions, 957 flow [2024-06-14 12:40:09,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=957, PETRI_PLACES=115, PETRI_TRANSITIONS=97} [2024-06-14 12:40:09,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 12:40:09,741 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 97 transitions, 957 flow [2024-06-14 12:40:09,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:09,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:09,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:09,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:40:09,742 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:09,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1136590383, now seen corresponding path program 1 times [2024-06-14 12:40:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746321073] [2024-06-14 12:40:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:10,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746321073] [2024-06-14 12:40:10,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746321073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:10,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:10,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:10,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397244337] [2024-06-14 12:40:10,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:10,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:10,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:10,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 97 transitions, 957 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:10,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:10,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:10,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:10,493 INFO L124 PetriNetUnfolderBase]: 290/519 cut-off events. [2024-06-14 12:40:10,493 INFO L125 PetriNetUnfolderBase]: For 14074/14080 co-relation queries the response was YES. [2024-06-14 12:40:10,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 519 events. 290/519 cut-off events. For 14074/14080 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2032 event pairs, 56 based on Foata normal form. 5/520 useless extension candidates. Maximal degree in co-relation 3111. Up to 445 conditions per place. [2024-06-14 12:40:10,496 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-14 12:40:10,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 1264 flow [2024-06-14 12:40:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:40:10,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 12:40:10,497 INFO L175 Difference]: Start difference. First operand has 115 places, 97 transitions, 957 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:40:10,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 1264 flow [2024-06-14 12:40:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 1130 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:10,514 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 896 flow [2024-06-14 12:40:10,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=896, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-06-14 12:40:10,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-14 12:40:10,515 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 896 flow [2024-06-14 12:40:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:10,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:10,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:10,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:40:10,516 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:10,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1617259939, now seen corresponding path program 6 times [2024-06-14 12:40:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597794108] [2024-06-14 12:40:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597794108] [2024-06-14 12:40:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597794108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:11,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323914843] [2024-06-14 12:40:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:11,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:11,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 896 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:11,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:11,326 INFO L124 PetriNetUnfolderBase]: 296/530 cut-off events. [2024-06-14 12:40:11,326 INFO L125 PetriNetUnfolderBase]: For 15111/15111 co-relation queries the response was YES. [2024-06-14 12:40:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 530 events. 296/530 cut-off events. For 15111/15111 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2080 event pairs, 62 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3102. Up to 334 conditions per place. [2024-06-14 12:40:11,329 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 44 changer transitions 0/114 dead transitions. [2024-06-14 12:40:11,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1290 flow [2024-06-14 12:40:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:40:11,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 12:40:11,331 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 896 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:40:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1290 flow [2024-06-14 12:40:11,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 1224 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:11,353 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 941 flow [2024-06-14 12:40:11,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-14 12:40:11,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-14 12:40:11,355 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 941 flow [2024-06-14 12:40:11,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:11,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:11,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:11,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:40:11,355 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:11,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1364676231, now seen corresponding path program 4 times [2024-06-14 12:40:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:11,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824390864] [2024-06-14 12:40:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:11,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:12,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:12,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824390864] [2024-06-14 12:40:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824390864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:12,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809763001] [2024-06-14 12:40:12,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:12,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:12,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:12,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:12,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 941 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:12,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:12,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:12,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:12,377 INFO L124 PetriNetUnfolderBase]: 297/533 cut-off events. [2024-06-14 12:40:12,377 INFO L125 PetriNetUnfolderBase]: For 16176/16176 co-relation queries the response was YES. [2024-06-14 12:40:12,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 533 events. 297/533 cut-off events. For 16176/16176 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2103 event pairs, 55 based on Foata normal form. 4/532 useless extension candidates. Maximal degree in co-relation 3121. Up to 394 conditions per place. [2024-06-14 12:40:12,380 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-06-14 12:40:12,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 112 transitions, 1193 flow [2024-06-14 12:40:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 12:40:12,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 12:40:12,382 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 941 flow. Second operand 8 states and 91 transitions. [2024-06-14 12:40:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 112 transitions, 1193 flow [2024-06-14 12:40:12,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 1109 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:12,403 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 932 flow [2024-06-14 12:40:12,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=932, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2024-06-14 12:40:12,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 12:40:12,404 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 932 flow [2024-06-14 12:40:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:12,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:12,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:40:12,405 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1128019503, now seen corresponding path program 2 times [2024-06-14 12:40:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428022900] [2024-06-14 12:40:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:12,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428022900] [2024-06-14 12:40:12,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428022900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:12,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:12,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079835702] [2024-06-14 12:40:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:13,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:13,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:13,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:13,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:13,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:13,195 INFO L124 PetriNetUnfolderBase]: 300/537 cut-off events. [2024-06-14 12:40:13,195 INFO L125 PetriNetUnfolderBase]: For 15659/15665 co-relation queries the response was YES. [2024-06-14 12:40:13,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3206 conditions, 537 events. 300/537 cut-off events. For 15659/15665 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2125 event pairs, 55 based on Foata normal form. 5/538 useless extension candidates. Maximal degree in co-relation 3146. Up to 462 conditions per place. [2024-06-14 12:40:13,198 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 81 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-06-14 12:40:13,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 114 transitions, 1259 flow [2024-06-14 12:40:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:40:13,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:40:13,199 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 932 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:40:13,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 114 transitions, 1259 flow [2024-06-14 12:40:13,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 114 transitions, 1168 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:13,221 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 922 flow [2024-06-14 12:40:13,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-06-14 12:40:13,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-14 12:40:13,222 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 922 flow [2024-06-14 12:40:13,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:13,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:13,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:13,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:40:13,223 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:13,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1128316173, now seen corresponding path program 3 times [2024-06-14 12:40:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:13,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155941559] [2024-06-14 12:40:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155941559] [2024-06-14 12:40:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155941559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:13,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303409425] [2024-06-14 12:40:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:13,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:13,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:13,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 922 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:13,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:13,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:13,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:14,123 INFO L124 PetriNetUnfolderBase]: 298/534 cut-off events. [2024-06-14 12:40:14,123 INFO L125 PetriNetUnfolderBase]: For 15847/15853 co-relation queries the response was YES. [2024-06-14 12:40:14,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3133 conditions, 534 events. 298/534 cut-off events. For 15847/15853 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2107 event pairs, 55 based on Foata normal form. 5/535 useless extension candidates. Maximal degree in co-relation 3073. Up to 460 conditions per place. [2024-06-14 12:40:14,127 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-06-14 12:40:14,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 113 transitions, 1169 flow [2024-06-14 12:40:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:40:14,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:40:14,128 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 922 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:40:14,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 113 transitions, 1169 flow [2024-06-14 12:40:14,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 113 transitions, 1106 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:14,148 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 926 flow [2024-06-14 12:40:14,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=926, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-14 12:40:14,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 12:40:14,149 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 926 flow [2024-06-14 12:40:14,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:14,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:14,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:14,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:40:14,150 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:14,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:14,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1128316421, now seen corresponding path program 7 times [2024-06-14 12:40:14,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977659577] [2024-06-14 12:40:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:14,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977659577] [2024-06-14 12:40:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977659577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:14,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:14,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:14,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624630513] [2024-06-14 12:40:14,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:14,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:14,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:14,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:14,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:14,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:14,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 926 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:14,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:14,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:14,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:14,946 INFO L124 PetriNetUnfolderBase]: 294/529 cut-off events. [2024-06-14 12:40:14,947 INFO L125 PetriNetUnfolderBase]: For 16183/16183 co-relation queries the response was YES. [2024-06-14 12:40:14,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 529 events. 294/529 cut-off events. For 16183/16183 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2097 event pairs, 51 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 2981. Up to 336 conditions per place. [2024-06-14 12:40:14,950 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 63 selfloop transitions, 52 changer transitions 0/117 dead transitions. [2024-06-14 12:40:14,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 1258 flow [2024-06-14 12:40:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:40:14,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 12:40:14,951 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 926 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:40:14,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 1258 flow [2024-06-14 12:40:14,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 117 transitions, 1157 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:14,970 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 934 flow [2024-06-14 12:40:14,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=934, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-14 12:40:14,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 12:40:14,971 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 934 flow [2024-06-14 12:40:14,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:14,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:14,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:40:14,971 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:14,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1128008591, now seen corresponding path program 1 times [2024-06-14 12:40:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323080041] [2024-06-14 12:40:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323080041] [2024-06-14 12:40:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323080041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:15,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:15,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237840260] [2024-06-14 12:40:15,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:15,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:15,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:15,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 934 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:15,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:15,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:15,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:15,934 INFO L124 PetriNetUnfolderBase]: 332/611 cut-off events. [2024-06-14 12:40:15,934 INFO L125 PetriNetUnfolderBase]: For 25181/25181 co-relation queries the response was YES. [2024-06-14 12:40:15,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 611 events. 332/611 cut-off events. For 25181/25181 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2550 event pairs, 57 based on Foata normal form. 16/622 useless extension candidates. Maximal degree in co-relation 3312. Up to 263 conditions per place. [2024-06-14 12:40:15,938 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 69 selfloop transitions, 62 changer transitions 0/133 dead transitions. [2024-06-14 12:40:15,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 1530 flow [2024-06-14 12:40:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:40:15,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:40:15,966 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 934 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:40:15,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 1530 flow [2024-06-14 12:40:15,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 133 transitions, 1406 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:15,990 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 1032 flow [2024-06-14 12:40:15,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1032, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2024-06-14 12:40:15,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-14 12:40:15,990 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 1032 flow [2024-06-14 12:40:15,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:15,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:15,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:15,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:40:15,991 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:15,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1404531653, now seen corresponding path program 1 times [2024-06-14 12:40:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:15,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575475487] [2024-06-14 12:40:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:15,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575475487] [2024-06-14 12:40:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575475487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079252540] [2024-06-14 12:40:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:16,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:16,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:16,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:16,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:16,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:17,007 INFO L124 PetriNetUnfolderBase]: 353/653 cut-off events. [2024-06-14 12:40:17,007 INFO L125 PetriNetUnfolderBase]: For 19189/19195 co-relation queries the response was YES. [2024-06-14 12:40:17,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 653 events. 353/653 cut-off events. For 19189/19195 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2839 event pairs, 72 based on Foata normal form. 6/654 useless extension candidates. Maximal degree in co-relation 3619. Up to 575 conditions per place. [2024-06-14 12:40:17,011 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 114 selfloop transitions, 19 changer transitions 0/135 dead transitions. [2024-06-14 12:40:17,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1403 flow [2024-06-14 12:40:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:40:17,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:40:17,024 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 1032 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:40:17,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1403 flow [2024-06-14 12:40:17,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1313 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:17,052 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1070 flow [2024-06-14 12:40:17,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2024-06-14 12:40:17,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-14 12:40:17,052 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1070 flow [2024-06-14 12:40:17,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:17,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:17,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:17,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:40:17,053 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:17,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash 587760625, now seen corresponding path program 2 times [2024-06-14 12:40:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:17,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223991895] [2024-06-14 12:40:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:17,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223991895] [2024-06-14 12:40:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223991895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:17,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:17,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563404858] [2024-06-14 12:40:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:17,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:17,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:17,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1070 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:17,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:17,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:17,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:17,963 INFO L124 PetriNetUnfolderBase]: 370/687 cut-off events. [2024-06-14 12:40:17,963 INFO L125 PetriNetUnfolderBase]: For 20057/20063 co-relation queries the response was YES. [2024-06-14 12:40:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 687 events. 370/687 cut-off events. For 20057/20063 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3052 event pairs, 66 based on Foata normal form. 6/689 useless extension candidates. Maximal degree in co-relation 3743. Up to 581 conditions per place. [2024-06-14 12:40:17,994 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 115 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-14 12:40:17,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 141 transitions, 1444 flow [2024-06-14 12:40:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:40:17,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:40:17,995 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1070 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:40:17,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 141 transitions, 1444 flow [2024-06-14 12:40:18,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 1421 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 12:40:18,062 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1183 flow [2024-06-14 12:40:18,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1183, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2024-06-14 12:40:18,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-14 12:40:18,064 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1183 flow [2024-06-14 12:40:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:18,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:18,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:18,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:40:18,065 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:18,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1744823887, now seen corresponding path program 3 times [2024-06-14 12:40:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:18,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89370470] [2024-06-14 12:40:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:18,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89370470] [2024-06-14 12:40:18,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89370470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:18,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:18,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:18,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054873550] [2024-06-14 12:40:18,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:18,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:18,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:18,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1183 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:18,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:18,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:18,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:19,028 INFO L124 PetriNetUnfolderBase]: 374/695 cut-off events. [2024-06-14 12:40:19,028 INFO L125 PetriNetUnfolderBase]: For 21478/21484 co-relation queries the response was YES. [2024-06-14 12:40:19,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3948 conditions, 695 events. 374/695 cut-off events. For 21478/21484 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3106 event pairs, 47 based on Foata normal form. 6/697 useless extension candidates. Maximal degree in co-relation 3875. Up to 555 conditions per place. [2024-06-14 12:40:19,032 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 112 selfloop transitions, 25 changer transitions 0/139 dead transitions. [2024-06-14 12:40:19,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 139 transitions, 1497 flow [2024-06-14 12:40:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 12:40:19,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 12:40:19,034 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1183 flow. Second operand 8 states and 84 transitions. [2024-06-14 12:40:19,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 139 transitions, 1497 flow [2024-06-14 12:40:19,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1447 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:19,070 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1205 flow [2024-06-14 12:40:19,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1205, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-14 12:40:19,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-14 12:40:19,070 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1205 flow [2024-06-14 12:40:19,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:19,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:19,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:19,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:40:19,071 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:19,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1751916101, now seen corresponding path program 4 times [2024-06-14 12:40:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:19,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156542601] [2024-06-14 12:40:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:19,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156542601] [2024-06-14 12:40:19,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156542601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:19,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:19,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:19,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766382365] [2024-06-14 12:40:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:19,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:19,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:19,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:19,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1205 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:19,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:19,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:20,233 INFO L124 PetriNetUnfolderBase]: 385/716 cut-off events. [2024-06-14 12:40:20,233 INFO L125 PetriNetUnfolderBase]: For 23049/23055 co-relation queries the response was YES. [2024-06-14 12:40:20,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 716 events. 385/716 cut-off events. For 23049/23055 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3249 event pairs, 81 based on Foata normal form. 6/718 useless extension candidates. Maximal degree in co-relation 4064. Up to 609 conditions per place. [2024-06-14 12:40:20,238 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 115 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-14 12:40:20,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1617 flow [2024-06-14 12:40:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:40:20,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 12:40:20,239 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1205 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:40:20,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1617 flow [2024-06-14 12:40:20,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 1557 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:20,281 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1227 flow [2024-06-14 12:40:20,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1227, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-14 12:40:20,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-14 12:40:20,283 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1227 flow [2024-06-14 12:40:20,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:20,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:20,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:20,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:40:20,284 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:20,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:20,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1751919821, now seen corresponding path program 5 times [2024-06-14 12:40:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:20,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037709548] [2024-06-14 12:40:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037709548] [2024-06-14 12:40:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037709548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:20,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:20,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474728222] [2024-06-14 12:40:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:20,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:20,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:20,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:20,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:20,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1227 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:20,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:20,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:20,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:21,194 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2024-06-14 12:40:21,194 INFO L125 PetriNetUnfolderBase]: For 21713/21719 co-relation queries the response was YES. [2024-06-14 12:40:21,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 711 events. 382/711 cut-off events. For 21713/21719 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3228 event pairs, 80 based on Foata normal form. 6/713 useless extension candidates. Maximal degree in co-relation 3954. Up to 623 conditions per place. [2024-06-14 12:40:21,199 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 114 selfloop transitions, 25 changer transitions 0/141 dead transitions. [2024-06-14 12:40:21,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 141 transitions, 1537 flow [2024-06-14 12:40:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:40:21,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-14 12:40:21,200 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1227 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:40:21,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 141 transitions, 1537 flow [2024-06-14 12:40:21,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 141 transitions, 1491 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:21,241 INFO L231 Difference]: Finished difference. Result has 155 places, 129 transitions, 1236 flow [2024-06-14 12:40:21,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1236, PETRI_PLACES=155, PETRI_TRANSITIONS=129} [2024-06-14 12:40:21,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-14 12:40:21,242 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 129 transitions, 1236 flow [2024-06-14 12:40:21,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:21,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:21,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:21,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:40:21,243 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:21,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:21,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1751919976, now seen corresponding path program 1 times [2024-06-14 12:40:21,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:21,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273676351] [2024-06-14 12:40:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:21,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273676351] [2024-06-14 12:40:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273676351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:21,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:21,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938894043] [2024-06-14 12:40:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:21,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:21,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:21,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 129 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:21,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:21,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:21,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:22,125 INFO L124 PetriNetUnfolderBase]: 380/708 cut-off events. [2024-06-14 12:40:22,126 INFO L125 PetriNetUnfolderBase]: For 21188/21194 co-relation queries the response was YES. [2024-06-14 12:40:22,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4016 conditions, 708 events. 380/708 cut-off events. For 21188/21194 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3217 event pairs, 79 based on Foata normal form. 5/709 useless extension candidates. Maximal degree in co-relation 3939. Up to 617 conditions per place. [2024-06-14 12:40:22,157 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 111 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-06-14 12:40:22,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1548 flow [2024-06-14 12:40:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:40:22,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:40:22,158 INFO L175 Difference]: Start difference. First operand has 155 places, 129 transitions, 1236 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:40:22,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1548 flow [2024-06-14 12:40:22,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 141 transitions, 1491 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:22,216 INFO L231 Difference]: Finished difference. Result has 156 places, 129 transitions, 1243 flow [2024-06-14 12:40:22,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1243, PETRI_PLACES=156, PETRI_TRANSITIONS=129} [2024-06-14 12:40:22,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-14 12:40:22,218 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 129 transitions, 1243 flow [2024-06-14 12:40:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:22,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:22,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:22,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:40:22,219 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:22,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1833543469, now seen corresponding path program 1 times [2024-06-14 12:40:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:22,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217648172] [2024-06-14 12:40:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217648172] [2024-06-14 12:40:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217648172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:22,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:22,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451586751] [2024-06-14 12:40:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:22,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:22,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 129 transitions, 1243 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:22,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:22,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:22,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:23,049 INFO L124 PetriNetUnfolderBase]: 386/719 cut-off events. [2024-06-14 12:40:23,050 INFO L125 PetriNetUnfolderBase]: For 22891/22897 co-relation queries the response was YES. [2024-06-14 12:40:23,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 719 events. 386/719 cut-off events. For 22891/22897 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3283 event pairs, 70 based on Foata normal form. 6/719 useless extension candidates. Maximal degree in co-relation 4011. Up to 632 conditions per place. [2024-06-14 12:40:23,054 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 25 changer transitions 1/145 dead transitions. [2024-06-14 12:40:23,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 145 transitions, 1586 flow [2024-06-14 12:40:23,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:40:23,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:40:23,055 INFO L175 Difference]: Start difference. First operand has 156 places, 129 transitions, 1243 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:40:23,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 145 transitions, 1586 flow [2024-06-14 12:40:23,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 145 transitions, 1470 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:23,102 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 1195 flow [2024-06-14 12:40:23,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1195, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2024-06-14 12:40:23,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-14 12:40:23,103 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 1195 flow [2024-06-14 12:40:23,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:23,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:23,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:23,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:40:23,104 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:23,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash -181240139, now seen corresponding path program 2 times [2024-06-14 12:40:23,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:23,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062430755] [2024-06-14 12:40:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:23,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:23,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062430755] [2024-06-14 12:40:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062430755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:23,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:23,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837576254] [2024-06-14 12:40:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:23,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:23,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:23,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 1195 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:23,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:23,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:23,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:23,889 INFO L124 PetriNetUnfolderBase]: 394/734 cut-off events. [2024-06-14 12:40:23,889 INFO L125 PetriNetUnfolderBase]: For 25627/25633 co-relation queries the response was YES. [2024-06-14 12:40:23,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 734 events. 394/734 cut-off events. For 25627/25633 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3377 event pairs, 69 based on Foata normal form. 5/733 useless extension candidates. Maximal degree in co-relation 4062. Up to 398 conditions per place. [2024-06-14 12:40:23,894 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 83 selfloop transitions, 66 changer transitions 1/152 dead transitions. [2024-06-14 12:40:23,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1776 flow [2024-06-14 12:40:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:40:23,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:40:23,896 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 1195 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:40:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1776 flow [2024-06-14 12:40:23,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1722 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:23,942 INFO L231 Difference]: Finished difference. Result has 158 places, 135 transitions, 1338 flow [2024-06-14 12:40:23,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1338, PETRI_PLACES=158, PETRI_TRANSITIONS=135} [2024-06-14 12:40:23,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 12:40:23,943 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 135 transitions, 1338 flow [2024-06-14 12:40:23,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:23,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:23,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:23,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:40:23,943 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:23,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1118166633, now seen corresponding path program 3 times [2024-06-14 12:40:23,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:23,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095172897] [2024-06-14 12:40:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:23,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:24,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:24,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095172897] [2024-06-14 12:40:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095172897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:24,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:24,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:24,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112070176] [2024-06-14 12:40:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:24,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:24,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:24,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 135 transitions, 1338 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:24,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:24,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:24,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:24,762 INFO L124 PetriNetUnfolderBase]: 396/740 cut-off events. [2024-06-14 12:40:24,762 INFO L125 PetriNetUnfolderBase]: For 25307/25313 co-relation queries the response was YES. [2024-06-14 12:40:24,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 740 events. 396/740 cut-off events. For 25307/25313 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3406 event pairs, 69 based on Foata normal form. 3/737 useless extension candidates. Maximal degree in co-relation 4260. Up to 400 conditions per place. [2024-06-14 12:40:24,766 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 87 selfloop transitions, 63 changer transitions 1/153 dead transitions. [2024-06-14 12:40:24,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 1889 flow [2024-06-14 12:40:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:40:24,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:40:24,768 INFO L175 Difference]: Start difference. First operand has 158 places, 135 transitions, 1338 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:40:24,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 1889 flow [2024-06-14 12:40:24,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 1817 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:24,824 INFO L231 Difference]: Finished difference. Result has 163 places, 136 transitions, 1412 flow [2024-06-14 12:40:24,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1412, PETRI_PLACES=163, PETRI_TRANSITIONS=136} [2024-06-14 12:40:24,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-14 12:40:24,825 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 136 transitions, 1412 flow [2024-06-14 12:40:24,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:24,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:24,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:24,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:40:24,825 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:24,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1117958871, now seen corresponding path program 6 times [2024-06-14 12:40:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373842008] [2024-06-14 12:40:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373842008] [2024-06-14 12:40:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373842008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:25,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:25,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811836729] [2024-06-14 12:40:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:25,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:25,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:25,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:25,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 136 transitions, 1412 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:25,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:25,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:25,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:25,942 INFO L124 PetriNetUnfolderBase]: 396/744 cut-off events. [2024-06-14 12:40:25,943 INFO L125 PetriNetUnfolderBase]: For 26686/26692 co-relation queries the response was YES. [2024-06-14 12:40:25,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 744 events. 396/744 cut-off events. For 26686/26692 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3478 event pairs, 70 based on Foata normal form. 3/741 useless extension candidates. Maximal degree in co-relation 4401. Up to 595 conditions per place. [2024-06-14 12:40:25,948 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2024-06-14 12:40:25,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 148 transitions, 1746 flow [2024-06-14 12:40:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 12:40:25,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-14 12:40:25,950 INFO L175 Difference]: Start difference. First operand has 163 places, 136 transitions, 1412 flow. Second operand 8 states and 91 transitions. [2024-06-14 12:40:25,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 148 transitions, 1746 flow [2024-06-14 12:40:26,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 148 transitions, 1634 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:26,015 INFO L231 Difference]: Finished difference. Result has 165 places, 137 transitions, 1398 flow [2024-06-14 12:40:26,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1398, PETRI_PLACES=165, PETRI_TRANSITIONS=137} [2024-06-14 12:40:26,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 12:40:26,016 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 137 transitions, 1398 flow [2024-06-14 12:40:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:26,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:26,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:26,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:40:26,017 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:26,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1117964823, now seen corresponding path program 4 times [2024-06-14 12:40:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178133869] [2024-06-14 12:40:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:26,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:26,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178133869] [2024-06-14 12:40:26,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178133869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:26,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:26,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:26,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897867315] [2024-06-14 12:40:26,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:26,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:26,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:26,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:26,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 137 transitions, 1398 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:26,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:26,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:26,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:26,842 INFO L124 PetriNetUnfolderBase]: 402/754 cut-off events. [2024-06-14 12:40:26,842 INFO L125 PetriNetUnfolderBase]: For 27849/27855 co-relation queries the response was YES. [2024-06-14 12:40:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 754 events. 402/754 cut-off events. For 27849/27855 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3516 event pairs, 72 based on Foata normal form. 3/751 useless extension candidates. Maximal degree in co-relation 4441. Up to 410 conditions per place. [2024-06-14 12:40:26,848 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 61 changer transitions 1/155 dead transitions. [2024-06-14 12:40:26,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 1964 flow [2024-06-14 12:40:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:40:26,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:40:26,849 INFO L175 Difference]: Start difference. First operand has 165 places, 137 transitions, 1398 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:40:26,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 1964 flow [2024-06-14 12:40:26,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 155 transitions, 1876 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:26,914 INFO L231 Difference]: Finished difference. Result has 168 places, 138 transitions, 1453 flow [2024-06-14 12:40:26,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=168, PETRI_TRANSITIONS=138} [2024-06-14 12:40:26,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-14 12:40:26,914 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 138 transitions, 1453 flow [2024-06-14 12:40:26,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:26,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:26,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:40:26,915 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:26,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:26,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1112452341, now seen corresponding path program 7 times [2024-06-14 12:40:26,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:26,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226034589] [2024-06-14 12:40:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:27,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:27,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226034589] [2024-06-14 12:40:27,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226034589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:27,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:27,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440281853] [2024-06-14 12:40:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:27,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:27,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:27,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:27,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:27,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 138 transitions, 1453 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:27,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:27,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:27,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:27,865 INFO L124 PetriNetUnfolderBase]: 402/758 cut-off events. [2024-06-14 12:40:27,865 INFO L125 PetriNetUnfolderBase]: For 29248/29254 co-relation queries the response was YES. [2024-06-14 12:40:27,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 758 events. 402/758 cut-off events. For 29248/29254 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3569 event pairs, 73 based on Foata normal form. 3/755 useless extension candidates. Maximal degree in co-relation 4521. Up to 609 conditions per place. [2024-06-14 12:40:27,869 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 112 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-06-14 12:40:27,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 150 transitions, 1793 flow [2024-06-14 12:40:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:40:27,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:40:27,870 INFO L175 Difference]: Start difference. First operand has 168 places, 138 transitions, 1453 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:40:27,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 150 transitions, 1793 flow [2024-06-14 12:40:27,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 150 transitions, 1692 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:27,936 INFO L231 Difference]: Finished difference. Result has 170 places, 139 transitions, 1444 flow [2024-06-14 12:40:27,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1444, PETRI_PLACES=170, PETRI_TRANSITIONS=139} [2024-06-14 12:40:27,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 12:40:27,937 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 139 transitions, 1444 flow [2024-06-14 12:40:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:27,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:27,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:27,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:40:27,937 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:27,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash -186965591, now seen corresponding path program 8 times [2024-06-14 12:40:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:27,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414471149] [2024-06-14 12:40:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:27,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414471149] [2024-06-14 12:40:28,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414471149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:28,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:28,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480127721] [2024-06-14 12:40:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:28,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:28,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:28,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:28,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:28,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 139 transitions, 1444 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:28,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:28,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:28,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:29,003 INFO L124 PetriNetUnfolderBase]: 399/753 cut-off events. [2024-06-14 12:40:29,003 INFO L125 PetriNetUnfolderBase]: For 28265/28271 co-relation queries the response was YES. [2024-06-14 12:40:29,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4482 conditions, 753 events. 399/753 cut-off events. For 28265/28271 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3528 event pairs, 72 based on Foata normal form. 3/750 useless extension candidates. Maximal degree in co-relation 4397. Up to 568 conditions per place. [2024-06-14 12:40:29,008 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 109 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2024-06-14 12:40:29,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 150 transitions, 1768 flow [2024-06-14 12:40:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:40:29,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:40:29,009 INFO L175 Difference]: Start difference. First operand has 170 places, 139 transitions, 1444 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:40:29,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 150 transitions, 1768 flow [2024-06-14 12:40:29,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 150 transitions, 1686 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:29,076 INFO L231 Difference]: Finished difference. Result has 172 places, 139 transitions, 1445 flow [2024-06-14 12:40:29,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1445, PETRI_PLACES=172, PETRI_TRANSITIONS=139} [2024-06-14 12:40:29,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 12:40:29,076 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 139 transitions, 1445 flow [2024-06-14 12:40:29,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:29,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:29,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:29,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:40:29,077 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:29,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:29,077 INFO L85 PathProgramCache]: Analyzing trace with hash -186811769, now seen corresponding path program 5 times [2024-06-14 12:40:29,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:29,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223217524] [2024-06-14 12:40:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:29,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223217524] [2024-06-14 12:40:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223217524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154325506] [2024-06-14 12:40:29,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:29,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:29,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:29,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 139 transitions, 1445 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:29,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:29,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:29,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:29,931 INFO L124 PetriNetUnfolderBase]: 408/766 cut-off events. [2024-06-14 12:40:29,931 INFO L125 PetriNetUnfolderBase]: For 30538/30544 co-relation queries the response was YES. [2024-06-14 12:40:29,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 766 events. 408/766 cut-off events. For 30538/30544 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3616 event pairs, 78 based on Foata normal form. 3/763 useless extension candidates. Maximal degree in co-relation 4539. Up to 420 conditions per place. [2024-06-14 12:40:29,936 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 64 changer transitions 1/159 dead transitions. [2024-06-14 12:40:29,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 159 transitions, 2058 flow [2024-06-14 12:40:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 12:40:29,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:40:29,944 INFO L175 Difference]: Start difference. First operand has 172 places, 139 transitions, 1445 flow. Second operand 9 states and 108 transitions. [2024-06-14 12:40:29,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 159 transitions, 2058 flow [2024-06-14 12:40:30,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 159 transitions, 1957 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:30,010 INFO L231 Difference]: Finished difference. Result has 175 places, 143 transitions, 1569 flow [2024-06-14 12:40:30,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1569, PETRI_PLACES=175, PETRI_TRANSITIONS=143} [2024-06-14 12:40:30,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-14 12:40:30,011 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 143 transitions, 1569 flow [2024-06-14 12:40:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:30,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:30,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:40:30,011 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:30,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash -874771655, now seen corresponding path program 6 times [2024-06-14 12:40:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688924459] [2024-06-14 12:40:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:30,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:30,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688924459] [2024-06-14 12:40:30,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688924459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:30,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:30,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:30,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319381700] [2024-06-14 12:40:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:30,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:30,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 143 transitions, 1569 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:30,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:30,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:30,902 INFO L124 PetriNetUnfolderBase]: 403/759 cut-off events. [2024-06-14 12:40:30,902 INFO L125 PetriNetUnfolderBase]: For 32074/32080 co-relation queries the response was YES. [2024-06-14 12:40:30,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 759 events. 403/759 cut-off events. For 32074/32080 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3559 event pairs, 79 based on Foata normal form. 3/756 useless extension candidates. Maximal degree in co-relation 4631. Up to 412 conditions per place. [2024-06-14 12:40:30,908 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 94 selfloop transitions, 65 changer transitions 0/161 dead transitions. [2024-06-14 12:40:30,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 161 transitions, 2246 flow [2024-06-14 12:40:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:40:30,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:40:30,909 INFO L175 Difference]: Start difference. First operand has 175 places, 143 transitions, 1569 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:40:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 161 transitions, 2246 flow [2024-06-14 12:40:30,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 161 transitions, 2131 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:30,978 INFO L231 Difference]: Finished difference. Result has 177 places, 145 transitions, 1616 flow [2024-06-14 12:40:30,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1616, PETRI_PLACES=177, PETRI_TRANSITIONS=145} [2024-06-14 12:40:30,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 12:40:30,978 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 145 transitions, 1616 flow [2024-06-14 12:40:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:30,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:30,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:40:30,979 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:30,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:30,979 INFO L85 PathProgramCache]: Analyzing trace with hash -874562126, now seen corresponding path program 1 times [2024-06-14 12:40:30,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:30,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341539578] [2024-06-14 12:40:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:30,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:31,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:31,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341539578] [2024-06-14 12:40:31,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341539578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:31,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:31,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:31,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228230291] [2024-06-14 12:40:31,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:31,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:31,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:31,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 145 transitions, 1616 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:31,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:31,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:31,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:31,941 INFO L124 PetriNetUnfolderBase]: 406/764 cut-off events. [2024-06-14 12:40:31,941 INFO L125 PetriNetUnfolderBase]: For 32394/32400 co-relation queries the response was YES. [2024-06-14 12:40:31,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4717 conditions, 764 events. 406/764 cut-off events. For 32394/32400 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3614 event pairs, 106 based on Foata normal form. 5/765 useless extension candidates. Maximal degree in co-relation 4631. Up to 685 conditions per place. [2024-06-14 12:40:31,946 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 31 changer transitions 0/155 dead transitions. [2024-06-14 12:40:31,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 155 transitions, 1969 flow [2024-06-14 12:40:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:40:31,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:40:31,947 INFO L175 Difference]: Start difference. First operand has 177 places, 145 transitions, 1616 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:40:31,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 155 transitions, 1969 flow [2024-06-14 12:40:32,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 155 transitions, 1797 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:32,014 INFO L231 Difference]: Finished difference. Result has 179 places, 147 transitions, 1544 flow [2024-06-14 12:40:32,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=179, PETRI_TRANSITIONS=147} [2024-06-14 12:40:32,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 12:40:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 147 transitions, 1544 flow [2024-06-14 12:40:32,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:32,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:32,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:32,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:40:32,015 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:32,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash -608864846, now seen corresponding path program 2 times [2024-06-14 12:40:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:32,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269849094] [2024-06-14 12:40:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:32,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:32,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:32,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269849094] [2024-06-14 12:40:32,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269849094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:32,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:32,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:32,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591265896] [2024-06-14 12:40:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:32,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:32,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 147 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:32,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:32,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:32,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:33,148 INFO L124 PetriNetUnfolderBase]: 409/769 cut-off events. [2024-06-14 12:40:33,149 INFO L125 PetriNetUnfolderBase]: For 32935/32941 co-relation queries the response was YES. [2024-06-14 12:40:33,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 769 events. 409/769 cut-off events. For 32935/32941 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3625 event pairs, 104 based on Foata normal form. 5/770 useless extension candidates. Maximal degree in co-relation 4582. Up to 690 conditions per place. [2024-06-14 12:40:33,154 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 33 changer transitions 0/158 dead transitions. [2024-06-14 12:40:33,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 158 transitions, 1906 flow [2024-06-14 12:40:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:40:33,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 12:40:33,155 INFO L175 Difference]: Start difference. First operand has 179 places, 147 transitions, 1544 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:40:33,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 158 transitions, 1906 flow [2024-06-14 12:40:33,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 158 transitions, 1833 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:33,227 INFO L231 Difference]: Finished difference. Result has 182 places, 149 transitions, 1576 flow [2024-06-14 12:40:33,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1576, PETRI_PLACES=182, PETRI_TRANSITIONS=149} [2024-06-14 12:40:33,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 12:40:33,228 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 149 transitions, 1576 flow [2024-06-14 12:40:33,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:33,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:33,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:40:33,234 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:33,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash -608865125, now seen corresponding path program 7 times [2024-06-14 12:40:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738297887] [2024-06-14 12:40:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:33,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:33,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738297887] [2024-06-14 12:40:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738297887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318977668] [2024-06-14 12:40:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:33,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:33,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:33,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:33,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 149 transitions, 1576 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:33,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:33,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:34,055 INFO L124 PetriNetUnfolderBase]: 438/817 cut-off events. [2024-06-14 12:40:34,055 INFO L125 PetriNetUnfolderBase]: For 42009/42015 co-relation queries the response was YES. [2024-06-14 12:40:34,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 817 events. 438/817 cut-off events. For 42009/42015 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3895 event pairs, 76 based on Foata normal form. 5/816 useless extension candidates. Maximal degree in co-relation 5037. Up to 439 conditions per place. [2024-06-14 12:40:34,060 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 81 changer transitions 0/174 dead transitions. [2024-06-14 12:40:34,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 174 transitions, 2370 flow [2024-06-14 12:40:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:40:34,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:40:34,061 INFO L175 Difference]: Start difference. First operand has 182 places, 149 transitions, 1576 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:40:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 174 transitions, 2370 flow [2024-06-14 12:40:34,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 174 transitions, 2289 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:34,151 INFO L231 Difference]: Finished difference. Result has 185 places, 156 transitions, 1773 flow [2024-06-14 12:40:34,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1773, PETRI_PLACES=185, PETRI_TRANSITIONS=156} [2024-06-14 12:40:34,151 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-14 12:40:34,152 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 156 transitions, 1773 flow [2024-06-14 12:40:34,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:34,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:34,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:34,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:40:34,152 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:34,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:34,153 INFO L85 PathProgramCache]: Analyzing trace with hash -618061895, now seen corresponding path program 8 times [2024-06-14 12:40:34,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:34,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497813562] [2024-06-14 12:40:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:34,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497813562] [2024-06-14 12:40:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497813562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:34,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:34,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809053440] [2024-06-14 12:40:34,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:34,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:34,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:34,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 156 transitions, 1773 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:34,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:34,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:34,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:35,041 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2024-06-14 12:40:35,041 INFO L125 PetriNetUnfolderBase]: For 49691/49697 co-relation queries the response was YES. [2024-06-14 12:40:35,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 873 events. 472/873 cut-off events. For 49691/49697 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4212 event pairs, 78 based on Foata normal form. 5/872 useless extension candidates. Maximal degree in co-relation 5760. Up to 462 conditions per place. [2024-06-14 12:40:35,047 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 82 changer transitions 0/183 dead transitions. [2024-06-14 12:40:35,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 183 transitions, 2715 flow [2024-06-14 12:40:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:40:35,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:40:35,048 INFO L175 Difference]: Start difference. First operand has 185 places, 156 transitions, 1773 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:40:35,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 183 transitions, 2715 flow [2024-06-14 12:40:35,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 183 transitions, 2571 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:35,135 INFO L231 Difference]: Finished difference. Result has 189 places, 163 transitions, 1905 flow [2024-06-14 12:40:35,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1905, PETRI_PLACES=189, PETRI_TRANSITIONS=163} [2024-06-14 12:40:35,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 12:40:35,135 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 163 transitions, 1905 flow [2024-06-14 12:40:35,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:35,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:35,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:35,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:40:35,136 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:35,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -608538416, now seen corresponding path program 3 times [2024-06-14 12:40:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707494279] [2024-06-14 12:40:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:35,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:35,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707494279] [2024-06-14 12:40:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707494279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:35,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:35,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:35,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348000328] [2024-06-14 12:40:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:35,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:35,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:35,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:35,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 163 transitions, 1905 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:35,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:35,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:35,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:36,234 INFO L124 PetriNetUnfolderBase]: 468/866 cut-off events. [2024-06-14 12:40:36,234 INFO L125 PetriNetUnfolderBase]: For 46358/46364 co-relation queries the response was YES. [2024-06-14 12:40:36,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5792 conditions, 866 events. 468/866 cut-off events. For 46358/46364 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4149 event pairs, 75 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 5701. Up to 530 conditions per place. [2024-06-14 12:40:36,240 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 98 selfloop transitions, 83 changer transitions 0/183 dead transitions. [2024-06-14 12:40:36,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 183 transitions, 2655 flow [2024-06-14 12:40:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:40:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:40:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:40:36,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:40:36,245 INFO L175 Difference]: Start difference. First operand has 189 places, 163 transitions, 1905 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:40:36,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 183 transitions, 2655 flow [2024-06-14 12:40:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 183 transitions, 2455 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:36,353 INFO L231 Difference]: Finished difference. Result has 192 places, 164 transitions, 1894 flow [2024-06-14 12:40:36,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1894, PETRI_PLACES=192, PETRI_TRANSITIONS=164} [2024-06-14 12:40:36,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 12:40:36,353 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 164 transitions, 1894 flow [2024-06-14 12:40:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:36,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:36,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:40:36,354 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:36,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash -618069335, now seen corresponding path program 9 times [2024-06-14 12:40:36,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:36,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694870171] [2024-06-14 12:40:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694870171] [2024-06-14 12:40:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694870171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372695743] [2024-06-14 12:40:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:37,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:37,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:37,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 164 transitions, 1894 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:37,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:37,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:37,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:37,349 INFO L124 PetriNetUnfolderBase]: 464/860 cut-off events. [2024-06-14 12:40:37,349 INFO L125 PetriNetUnfolderBase]: For 46204/46210 co-relation queries the response was YES. [2024-06-14 12:40:37,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5630 conditions, 860 events. 464/860 cut-off events. For 46204/46210 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4124 event pairs, 75 based on Foata normal form. 3/857 useless extension candidates. Maximal degree in co-relation 5539. Up to 457 conditions per place. [2024-06-14 12:40:37,355 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 88 changer transitions 0/183 dead transitions. [2024-06-14 12:40:37,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 183 transitions, 2644 flow [2024-06-14 12:40:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:40:37,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:40:37,356 INFO L175 Difference]: Start difference. First operand has 192 places, 164 transitions, 1894 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:40:37,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 183 transitions, 2644 flow [2024-06-14 12:40:37,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 183 transitions, 2472 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:37,465 INFO L231 Difference]: Finished difference. Result has 195 places, 165 transitions, 1919 flow [2024-06-14 12:40:37,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=195, PETRI_TRANSITIONS=165} [2024-06-14 12:40:37,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 12:40:37,466 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 165 transitions, 1919 flow [2024-06-14 12:40:37,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:37,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:37,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:37,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:40:37,467 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:37,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash -618061616, now seen corresponding path program 4 times [2024-06-14 12:40:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:37,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709329027] [2024-06-14 12:40:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:38,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709329027] [2024-06-14 12:40:38,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709329027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:38,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:38,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175145627] [2024-06-14 12:40:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:38,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:38,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:38,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:38,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:38,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:38,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 165 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:38,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:38,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:38,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:38,541 INFO L124 PetriNetUnfolderBase]: 460/853 cut-off events. [2024-06-14 12:40:38,542 INFO L125 PetriNetUnfolderBase]: For 44998/45004 co-relation queries the response was YES. [2024-06-14 12:40:38,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 853 events. 460/853 cut-off events. For 44998/45004 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4102 event pairs, 110 based on Foata normal form. 5/854 useless extension candidates. Maximal degree in co-relation 5496. Up to 774 conditions per place. [2024-06-14 12:40:38,547 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 33 changer transitions 0/175 dead transitions. [2024-06-14 12:40:38,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 175 transitions, 2302 flow [2024-06-14 12:40:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:40:38,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 12:40:38,549 INFO L175 Difference]: Start difference. First operand has 195 places, 165 transitions, 1919 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:40:38,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 175 transitions, 2302 flow [2024-06-14 12:40:38,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 175 transitions, 2136 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:38,658 INFO L231 Difference]: Finished difference. Result has 198 places, 166 transitions, 1843 flow [2024-06-14 12:40:38,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1843, PETRI_PLACES=198, PETRI_TRANSITIONS=166} [2024-06-14 12:40:38,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 12:40:38,659 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 166 transitions, 1843 flow [2024-06-14 12:40:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:38,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:38,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:38,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:40:38,659 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:38,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -874562405, now seen corresponding path program 10 times [2024-06-14 12:40:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513906892] [2024-06-14 12:40:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:38,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:39,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:39,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513906892] [2024-06-14 12:40:39,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513906892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:39,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:39,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013965986] [2024-06-14 12:40:39,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:39,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:39,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:39,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:39,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 166 transitions, 1843 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:39,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:39,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:39,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:39,479 INFO L124 PetriNetUnfolderBase]: 462/857 cut-off events. [2024-06-14 12:40:39,479 INFO L125 PetriNetUnfolderBase]: For 47585/47591 co-relation queries the response was YES. [2024-06-14 12:40:39,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 857 events. 462/857 cut-off events. For 47585/47591 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4106 event pairs, 87 based on Foata normal form. 5/856 useless extension candidates. Maximal degree in co-relation 5301. Up to 452 conditions per place. [2024-06-14 12:40:39,486 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 78 changer transitions 0/184 dead transitions. [2024-06-14 12:40:39,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 184 transitions, 2616 flow [2024-06-14 12:40:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:40:39,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:40:39,488 INFO L175 Difference]: Start difference. First operand has 198 places, 166 transitions, 1843 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:40:39,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 184 transitions, 2616 flow [2024-06-14 12:40:39,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 184 transitions, 2533 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:39,586 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 1955 flow [2024-06-14 12:40:39,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1955, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2024-06-14 12:40:39,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-14 12:40:39,587 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 1955 flow [2024-06-14 12:40:39,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:39,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:39,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:39,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:40:39,588 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:39,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash -874569845, now seen corresponding path program 11 times [2024-06-14 12:40:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:39,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900136010] [2024-06-14 12:40:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900136010] [2024-06-14 12:40:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900136010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:40,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819895827] [2024-06-14 12:40:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:40,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:40,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 1955 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:40,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:40,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:40,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:40,494 INFO L124 PetriNetUnfolderBase]: 458/851 cut-off events. [2024-06-14 12:40:40,495 INFO L125 PetriNetUnfolderBase]: For 43369/43375 co-relation queries the response was YES. [2024-06-14 12:40:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5396 conditions, 851 events. 458/851 cut-off events. For 43369/43375 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4074 event pairs, 87 based on Foata normal form. 3/848 useless extension candidates. Maximal degree in co-relation 5302. Up to 451 conditions per place. [2024-06-14 12:40:40,501 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 78 changer transitions 0/184 dead transitions. [2024-06-14 12:40:40,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 184 transitions, 2705 flow [2024-06-14 12:40:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:40:40,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:40:40,513 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 1955 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:40:40,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 184 transitions, 2705 flow [2024-06-14 12:40:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 184 transitions, 2497 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:40,611 INFO L231 Difference]: Finished difference. Result has 201 places, 168 transitions, 1908 flow [2024-06-14 12:40:40,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1908, PETRI_PLACES=201, PETRI_TRANSITIONS=168} [2024-06-14 12:40:40,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 12:40:40,612 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 168 transitions, 1908 flow [2024-06-14 12:40:40,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:40,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:40,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:40,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:40:40,612 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:40,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1969992456, now seen corresponding path program 1 times [2024-06-14 12:40:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497509166] [2024-06-14 12:40:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:40,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497509166] [2024-06-14 12:40:41,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497509166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:41,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:41,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628087921] [2024-06-14 12:40:41,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:41,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:41,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:41,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:41,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 168 transitions, 1908 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:41,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:41,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:41,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:41,738 INFO L124 PetriNetUnfolderBase]: 462/859 cut-off events. [2024-06-14 12:40:41,738 INFO L125 PetriNetUnfolderBase]: For 44539/44545 co-relation queries the response was YES. [2024-06-14 12:40:41,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 859 events. 462/859 cut-off events. For 44539/44545 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4141 event pairs, 66 based on Foata normal form. 6/861 useless extension candidates. Maximal degree in co-relation 5308. Up to 703 conditions per place. [2024-06-14 12:40:41,744 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 155 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-14 12:40:41,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 183 transitions, 2310 flow [2024-06-14 12:40:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 12:40:41,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 12:40:41,745 INFO L175 Difference]: Start difference. First operand has 201 places, 168 transitions, 1908 flow. Second operand 9 states and 92 transitions. [2024-06-14 12:40:41,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 183 transitions, 2310 flow [2024-06-14 12:40:41,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 183 transitions, 2132 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:41,843 INFO L231 Difference]: Finished difference. Result has 203 places, 169 transitions, 1798 flow [2024-06-14 12:40:41,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1798, PETRI_PLACES=203, PETRI_TRANSITIONS=169} [2024-06-14 12:40:41,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-14 12:40:41,844 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 169 transitions, 1798 flow [2024-06-14 12:40:41,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:41,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:41,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:40:41,844 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:41,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1686820428, now seen corresponding path program 1 times [2024-06-14 12:40:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:41,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626726421] [2024-06-14 12:40:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:42,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:42,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626726421] [2024-06-14 12:40:42,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626726421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:42,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:42,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429436452] [2024-06-14 12:40:42,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:42,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:42,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:42,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 169 transitions, 1798 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:42,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:42,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:42,809 INFO L124 PetriNetUnfolderBase]: 457/844 cut-off events. [2024-06-14 12:40:42,809 INFO L125 PetriNetUnfolderBase]: For 41933/41939 co-relation queries the response was YES. [2024-06-14 12:40:42,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5180 conditions, 844 events. 457/844 cut-off events. For 41933/41939 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4050 event pairs, 94 based on Foata normal form. 5/845 useless extension candidates. Maximal degree in co-relation 5084. Up to 742 conditions per place. [2024-06-14 12:40:42,815 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 30 changer transitions 4/183 dead transitions. [2024-06-14 12:40:42,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 183 transitions, 2200 flow [2024-06-14 12:40:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:40:42,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:40:42,817 INFO L175 Difference]: Start difference. First operand has 203 places, 169 transitions, 1798 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:40:42,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 183 transitions, 2200 flow [2024-06-14 12:40:42,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 183 transitions, 2140 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:42,912 INFO L231 Difference]: Finished difference. Result has 205 places, 165 transitions, 1754 flow [2024-06-14 12:40:42,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1754, PETRI_PLACES=205, PETRI_TRANSITIONS=165} [2024-06-14 12:40:42,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 12:40:42,913 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 165 transitions, 1754 flow [2024-06-14 12:40:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:42,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:42,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:40:42,914 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:42,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1686820614, now seen corresponding path program 2 times [2024-06-14 12:40:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738096411] [2024-06-14 12:40:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:42,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:43,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:43,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738096411] [2024-06-14 12:40:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738096411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:43,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723335835] [2024-06-14 12:40:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:43,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 165 transitions, 1754 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:43,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:43,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:43,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:43,912 INFO L124 PetriNetUnfolderBase]: 444/817 cut-off events. [2024-06-14 12:40:43,913 INFO L125 PetriNetUnfolderBase]: For 45092/45098 co-relation queries the response was YES. [2024-06-14 12:40:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5107 conditions, 817 events. 444/817 cut-off events. For 45092/45098 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3894 event pairs, 92 based on Foata normal form. 6/819 useless extension candidates. Maximal degree in co-relation 5010. Up to 718 conditions per place. [2024-06-14 12:40:43,918 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-14 12:40:43,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 180 transitions, 2158 flow [2024-06-14 12:40:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:40:43,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:40:43,921 INFO L175 Difference]: Start difference. First operand has 205 places, 165 transitions, 1754 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:40:43,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 180 transitions, 2158 flow [2024-06-14 12:40:44,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 180 transitions, 1967 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:40:44,021 INFO L231 Difference]: Finished difference. Result has 201 places, 166 transitions, 1638 flow [2024-06-14 12:40:44,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1638, PETRI_PLACES=201, PETRI_TRANSITIONS=166} [2024-06-14 12:40:44,022 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 12:40:44,022 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 166 transitions, 1638 flow [2024-06-14 12:40:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:44,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:44,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:44,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:40:44,023 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:44,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1525059080, now seen corresponding path program 3 times [2024-06-14 12:40:44,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:44,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829964243] [2024-06-14 12:40:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:44,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:44,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:44,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829964243] [2024-06-14 12:40:44,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829964243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:44,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:44,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:44,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188046717] [2024-06-14 12:40:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:44,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:44,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:44,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:44,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:44,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 166 transitions, 1638 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:44,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:44,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:44,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:45,212 INFO L124 PetriNetUnfolderBase]: 448/825 cut-off events. [2024-06-14 12:40:45,212 INFO L125 PetriNetUnfolderBase]: For 43572/43578 co-relation queries the response was YES. [2024-06-14 12:40:45,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 825 events. 448/825 cut-off events. For 43572/43578 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3976 event pairs, 92 based on Foata normal form. 6/827 useless extension candidates. Maximal degree in co-relation 4894. Up to 710 conditions per place. [2024-06-14 12:40:45,221 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-06-14 12:40:45,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 181 transitions, 2044 flow [2024-06-14 12:40:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:40:45,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:40:45,222 INFO L175 Difference]: Start difference. First operand has 201 places, 166 transitions, 1638 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:40:45,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 181 transitions, 2044 flow [2024-06-14 12:40:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 181 transitions, 1981 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:45,328 INFO L231 Difference]: Finished difference. Result has 203 places, 167 transitions, 1651 flow [2024-06-14 12:40:45,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1651, PETRI_PLACES=203, PETRI_TRANSITIONS=167} [2024-06-14 12:40:45,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-14 12:40:45,329 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 167 transitions, 1651 flow [2024-06-14 12:40:45,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:45,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:45,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:45,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:40:45,329 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:45,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:45,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1686940584, now seen corresponding path program 4 times [2024-06-14 12:40:45,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:45,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981963403] [2024-06-14 12:40:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:45,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:46,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:46,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981963403] [2024-06-14 12:40:46,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981963403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:46,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:46,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:46,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71114171] [2024-06-14 12:40:46,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:46,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:46,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:46,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:46,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:46,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:46,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 167 transitions, 1651 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:46,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:46,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:46,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:46,359 INFO L124 PetriNetUnfolderBase]: 452/833 cut-off events. [2024-06-14 12:40:46,359 INFO L125 PetriNetUnfolderBase]: For 45151/45157 co-relation queries the response was YES. [2024-06-14 12:40:46,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5054 conditions, 833 events. 452/833 cut-off events. For 45151/45157 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4027 event pairs, 94 based on Foata normal form. 6/835 useless extension candidates. Maximal degree in co-relation 4956. Up to 694 conditions per place. [2024-06-14 12:40:46,365 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 151 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-14 12:40:46,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 182 transitions, 2059 flow [2024-06-14 12:40:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:40:46,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 12:40:46,366 INFO L175 Difference]: Start difference. First operand has 203 places, 167 transitions, 1651 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:40:46,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 182 transitions, 2059 flow [2024-06-14 12:40:46,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 182 transitions, 1993 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:46,485 INFO L231 Difference]: Finished difference. Result has 205 places, 168 transitions, 1663 flow [2024-06-14 12:40:46,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1663, PETRI_PLACES=205, PETRI_TRANSITIONS=168} [2024-06-14 12:40:46,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 12:40:46,486 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 168 transitions, 1663 flow [2024-06-14 12:40:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:46,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:46,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:46,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:40:46,487 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:46,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:46,487 INFO L85 PathProgramCache]: Analyzing trace with hash 303421690, now seen corresponding path program 5 times [2024-06-14 12:40:46,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:46,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659046335] [2024-06-14 12:40:46,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659046335] [2024-06-14 12:40:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659046335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657995636] [2024-06-14 12:40:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:47,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:47,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:47,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 168 transitions, 1663 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:47,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:47,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:47,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:47,628 INFO L124 PetriNetUnfolderBase]: 456/841 cut-off events. [2024-06-14 12:40:47,629 INFO L125 PetriNetUnfolderBase]: For 46738/46744 co-relation queries the response was YES. [2024-06-14 12:40:47,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5117 conditions, 841 events. 456/841 cut-off events. For 46738/46744 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4087 event pairs, 66 based on Foata normal form. 3/838 useless extension candidates. Maximal degree in co-relation 5018. Up to 627 conditions per place. [2024-06-14 12:40:47,635 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 58 changer transitions 0/182 dead transitions. [2024-06-14 12:40:47,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 182 transitions, 2075 flow [2024-06-14 12:40:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:40:47,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:40:47,636 INFO L175 Difference]: Start difference. First operand has 205 places, 168 transitions, 1663 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:40:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 182 transitions, 2075 flow [2024-06-14 12:40:47,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 182 transitions, 2007 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:47,761 INFO L231 Difference]: Finished difference. Result has 207 places, 169 transitions, 1733 flow [2024-06-14 12:40:47,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1733, PETRI_PLACES=207, PETRI_TRANSITIONS=169} [2024-06-14 12:40:47,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-14 12:40:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 169 transitions, 1733 flow [2024-06-14 12:40:47,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:47,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:47,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:47,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:40:47,762 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:47,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash 296992600, now seen corresponding path program 6 times [2024-06-14 12:40:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996889081] [2024-06-14 12:40:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:48,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:48,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996889081] [2024-06-14 12:40:48,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996889081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:48,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:48,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:48,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676819049] [2024-06-14 12:40:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:48,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:48,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:48,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:48,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:48,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:48,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 169 transitions, 1733 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:48,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:48,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:48,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:48,790 INFO L124 PetriNetUnfolderBase]: 460/849 cut-off events. [2024-06-14 12:40:48,791 INFO L125 PetriNetUnfolderBase]: For 48284/48290 co-relation queries the response was YES. [2024-06-14 12:40:48,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 849 events. 460/849 cut-off events. For 48284/48290 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4129 event pairs, 68 based on Foata normal form. 3/846 useless extension candidates. Maximal degree in co-relation 5154. Up to 635 conditions per place. [2024-06-14 12:40:48,797 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2024-06-14 12:40:48,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 183 transitions, 2149 flow [2024-06-14 12:40:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:40:48,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:40:48,798 INFO L175 Difference]: Start difference. First operand has 207 places, 169 transitions, 1733 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:40:48,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 183 transitions, 2149 flow [2024-06-14 12:40:48,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 183 transitions, 2021 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:48,913 INFO L231 Difference]: Finished difference. Result has 209 places, 170 transitions, 1739 flow [2024-06-14 12:40:48,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1739, PETRI_PLACES=209, PETRI_TRANSITIONS=170} [2024-06-14 12:40:48,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-14 12:40:48,914 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 170 transitions, 1739 flow [2024-06-14 12:40:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:48,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:48,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:40:48,915 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:48,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1330146958, now seen corresponding path program 7 times [2024-06-14 12:40:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026556673] [2024-06-14 12:40:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:49,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:49,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026556673] [2024-06-14 12:40:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026556673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:49,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769024357] [2024-06-14 12:40:49,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:49,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:49,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:49,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:49,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:49,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:49,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 170 transitions, 1739 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:49,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:49,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:49,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:49,942 INFO L124 PetriNetUnfolderBase]: 464/857 cut-off events. [2024-06-14 12:40:49,942 INFO L125 PetriNetUnfolderBase]: For 49925/49931 co-relation queries the response was YES. [2024-06-14 12:40:49,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 857 events. 464/857 cut-off events. For 49925/49931 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4204 event pairs, 68 based on Foata normal form. 3/854 useless extension candidates. Maximal degree in co-relation 5200. Up to 623 conditions per place. [2024-06-14 12:40:49,948 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 57 changer transitions 0/184 dead transitions. [2024-06-14 12:40:49,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 184 transitions, 2157 flow [2024-06-14 12:40:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:40:49,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:40:49,949 INFO L175 Difference]: Start difference. First operand has 209 places, 170 transitions, 1739 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:40:49,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 184 transitions, 2157 flow [2024-06-14 12:40:50,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 184 transitions, 2033 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:50,080 INFO L231 Difference]: Finished difference. Result has 211 places, 171 transitions, 1755 flow [2024-06-14 12:40:50,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1755, PETRI_PLACES=211, PETRI_TRANSITIONS=171} [2024-06-14 12:40:50,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-14 12:40:50,081 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 171 transitions, 1755 flow [2024-06-14 12:40:50,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:50,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:50,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:40:50,081 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1500844738, now seen corresponding path program 8 times [2024-06-14 12:40:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998466613] [2024-06-14 12:40:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:50,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998466613] [2024-06-14 12:40:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998466613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266222950] [2024-06-14 12:40:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:50,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:50,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:50,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 171 transitions, 1755 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:50,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:50,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:50,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:51,193 INFO L124 PetriNetUnfolderBase]: 468/865 cut-off events. [2024-06-14 12:40:51,194 INFO L125 PetriNetUnfolderBase]: For 51557/51563 co-relation queries the response was YES. [2024-06-14 12:40:51,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 865 events. 468/865 cut-off events. For 51557/51563 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4244 event pairs, 76 based on Foata normal form. 3/862 useless extension candidates. Maximal degree in co-relation 5266. Up to 651 conditions per place. [2024-06-14 12:40:51,200 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 52 changer transitions 0/185 dead transitions. [2024-06-14 12:40:51,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 185 transitions, 2179 flow [2024-06-14 12:40:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 12:40:51,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 12:40:51,201 INFO L175 Difference]: Start difference. First operand has 211 places, 171 transitions, 1755 flow. Second operand 9 states and 101 transitions. [2024-06-14 12:40:51,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 185 transitions, 2179 flow [2024-06-14 12:40:51,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 185 transitions, 2049 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:51,327 INFO L231 Difference]: Finished difference. Result has 213 places, 172 transitions, 1757 flow [2024-06-14 12:40:51,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1757, PETRI_PLACES=213, PETRI_TRANSITIONS=172} [2024-06-14 12:40:51,336 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-14 12:40:51,336 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 172 transitions, 1757 flow [2024-06-14 12:40:51,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:51,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:51,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:51,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:40:51,337 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:51,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1500849388, now seen corresponding path program 9 times [2024-06-14 12:40:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:51,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811303214] [2024-06-14 12:40:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:51,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811303214] [2024-06-14 12:40:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811303214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:52,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530125958] [2024-06-14 12:40:52,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:52,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 172 transitions, 1757 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:52,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:52,465 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2024-06-14 12:40:52,465 INFO L125 PetriNetUnfolderBase]: For 53121/53127 co-relation queries the response was YES. [2024-06-14 12:40:52,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5415 conditions, 873 events. 472/873 cut-off events. For 53121/53127 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4308 event pairs, 76 based on Foata normal form. 3/870 useless extension candidates. Maximal degree in co-relation 5312. Up to 645 conditions per place. [2024-06-14 12:40:52,470 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 53 changer transitions 0/186 dead transitions. [2024-06-14 12:40:52,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 186 transitions, 2183 flow [2024-06-14 12:40:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:40:52,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:40:52,471 INFO L175 Difference]: Start difference. First operand has 213 places, 172 transitions, 1757 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:40:52,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 186 transitions, 2183 flow [2024-06-14 12:40:52,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 186 transitions, 2061 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:52,608 INFO L231 Difference]: Finished difference. Result has 215 places, 173 transitions, 1771 flow [2024-06-14 12:40:52,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1771, PETRI_PLACES=215, PETRI_TRANSITIONS=173} [2024-06-14 12:40:52,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 12:40:52,609 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 173 transitions, 1771 flow [2024-06-14 12:40:52,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:52,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:52,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:52,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:40:52,609 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:52,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 126170200, now seen corresponding path program 10 times [2024-06-14 12:40:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:52,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499527782] [2024-06-14 12:40:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:52,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:53,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:53,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499527782] [2024-06-14 12:40:53,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499527782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:53,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:53,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:53,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720397506] [2024-06-14 12:40:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:53,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:53,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:53,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 173 transitions, 1771 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:53,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:53,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:53,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:53,681 INFO L124 PetriNetUnfolderBase]: 476/881 cut-off events. [2024-06-14 12:40:53,681 INFO L125 PetriNetUnfolderBase]: For 54893/54899 co-relation queries the response was YES. [2024-06-14 12:40:53,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5478 conditions, 881 events. 476/881 cut-off events. For 54893/54899 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4367 event pairs, 78 based on Foata normal form. 3/878 useless extension candidates. Maximal degree in co-relation 5374. Up to 572 conditions per place. [2024-06-14 12:40:53,687 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 128 selfloop transitions, 58 changer transitions 0/188 dead transitions. [2024-06-14 12:40:53,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 188 transitions, 2335 flow [2024-06-14 12:40:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:40:53,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:40:53,688 INFO L175 Difference]: Start difference. First operand has 215 places, 173 transitions, 1771 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:40:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 188 transitions, 2335 flow [2024-06-14 12:40:53,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 188 transitions, 2209 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:53,836 INFO L231 Difference]: Finished difference. Result has 217 places, 174 transitions, 1791 flow [2024-06-14 12:40:53,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1791, PETRI_PLACES=217, PETRI_TRANSITIONS=174} [2024-06-14 12:40:53,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 12:40:53,837 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 174 transitions, 1791 flow [2024-06-14 12:40:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:53,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:53,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:53,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:40:53,838 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:53,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1684820302, now seen corresponding path program 1 times [2024-06-14 12:40:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:53,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128858940] [2024-06-14 12:40:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:54,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:54,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128858940] [2024-06-14 12:40:54,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128858940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:54,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:54,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:40:54,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198475881] [2024-06-14 12:40:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:54,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:40:54,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:40:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:40:54,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:54,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 174 transitions, 1791 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:54,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:54,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:54,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:55,193 INFO L124 PetriNetUnfolderBase]: 480/889 cut-off events. [2024-06-14 12:40:55,193 INFO L125 PetriNetUnfolderBase]: For 56313/56319 co-relation queries the response was YES. [2024-06-14 12:40:55,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5527 conditions, 889 events. 480/889 cut-off events. For 56313/56319 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4424 event pairs, 114 based on Foata normal form. 6/891 useless extension candidates. Maximal degree in co-relation 5422. Up to 793 conditions per place. [2024-06-14 12:40:55,200 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2024-06-14 12:40:55,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 187 transitions, 2201 flow [2024-06-14 12:40:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:40:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:40:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 12:40:55,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-14 12:40:55,201 INFO L175 Difference]: Start difference. First operand has 217 places, 174 transitions, 1791 flow. Second operand 12 states and 121 transitions. [2024-06-14 12:40:55,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 187 transitions, 2201 flow [2024-06-14 12:40:55,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 187 transitions, 2077 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:55,368 INFO L231 Difference]: Finished difference. Result has 223 places, 175 transitions, 1766 flow [2024-06-14 12:40:55,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1766, PETRI_PLACES=223, PETRI_TRANSITIONS=175} [2024-06-14 12:40:55,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-14 12:40:55,369 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 175 transitions, 1766 flow [2024-06-14 12:40:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:55,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:55,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:40:55,370 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:55,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1684464112, now seen corresponding path program 2 times [2024-06-14 12:40:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138600560] [2024-06-14 12:40:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138600560] [2024-06-14 12:40:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138600560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:56,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:56,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:40:56,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732289417] [2024-06-14 12:40:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:40:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:40:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:40:56,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:56,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 175 transitions, 1766 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:56,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:56,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:56,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:56,596 INFO L124 PetriNetUnfolderBase]: 484/897 cut-off events. [2024-06-14 12:40:56,597 INFO L125 PetriNetUnfolderBase]: For 57545/57551 co-relation queries the response was YES. [2024-06-14 12:40:56,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5503 conditions, 897 events. 484/897 cut-off events. For 57545/57551 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4487 event pairs, 106 based on Foata normal form. 6/899 useless extension candidates. Maximal degree in co-relation 5397. Up to 781 conditions per place. [2024-06-14 12:40:56,603 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 41 changer transitions 0/189 dead transitions. [2024-06-14 12:40:56,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 189 transitions, 2184 flow [2024-06-14 12:40:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:40:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:40:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 12:40:56,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-14 12:40:56,605 INFO L175 Difference]: Start difference. First operand has 223 places, 175 transitions, 1766 flow. Second operand 12 states and 121 transitions. [2024-06-14 12:40:56,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 189 transitions, 2184 flow [2024-06-14 12:40:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 189 transitions, 2046 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-14 12:40:56,740 INFO L231 Difference]: Finished difference. Result has 223 places, 176 transitions, 1732 flow [2024-06-14 12:40:56,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1732, PETRI_PLACES=223, PETRI_TRANSITIONS=176} [2024-06-14 12:40:56,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-14 12:40:56,741 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 176 transitions, 1732 flow [2024-06-14 12:40:56,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:56,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:56,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:40:56,741 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:56,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1348296074, now seen corresponding path program 11 times [2024-06-14 12:40:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963152886] [2024-06-14 12:40:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:57,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963152886] [2024-06-14 12:40:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963152886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375476874] [2024-06-14 12:40:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:57,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:57,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:57,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 176 transitions, 1732 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:57,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:57,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:57,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:57,742 INFO L124 PetriNetUnfolderBase]: 488/905 cut-off events. [2024-06-14 12:40:57,742 INFO L125 PetriNetUnfolderBase]: For 59349/59355 co-relation queries the response was YES. [2024-06-14 12:40:57,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5449 conditions, 905 events. 488/905 cut-off events. For 59349/59355 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4521 event pairs, 84 based on Foata normal form. 3/902 useless extension candidates. Maximal degree in co-relation 5344. Up to 691 conditions per place. [2024-06-14 12:40:57,748 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 51 changer transitions 0/189 dead transitions. [2024-06-14 12:40:57,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 189 transitions, 2161 flow [2024-06-14 12:40:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:40:57,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:40:57,749 INFO L175 Difference]: Start difference. First operand has 223 places, 176 transitions, 1732 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:40:57,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 189 transitions, 2161 flow [2024-06-14 12:40:57,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 189 transitions, 2069 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:40:57,904 INFO L231 Difference]: Finished difference. Result has 222 places, 177 transitions, 1771 flow [2024-06-14 12:40:57,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1771, PETRI_PLACES=222, PETRI_TRANSITIONS=177} [2024-06-14 12:40:57,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 12:40:57,905 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 177 transitions, 1771 flow [2024-06-14 12:40:57,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:57,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:57,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:57,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:40:57,906 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:57,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1348300724, now seen corresponding path program 12 times [2024-06-14 12:40:57,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:57,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978515785] [2024-06-14 12:40:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:57,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:58,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978515785] [2024-06-14 12:40:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978515785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:58,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697953746] [2024-06-14 12:40:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:58,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:58,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 177 transitions, 1771 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:58,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:58,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:58,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:58,934 INFO L124 PetriNetUnfolderBase]: 492/913 cut-off events. [2024-06-14 12:40:58,934 INFO L125 PetriNetUnfolderBase]: For 61457/61463 co-relation queries the response was YES. [2024-06-14 12:40:58,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5549 conditions, 913 events. 492/913 cut-off events. For 61457/61463 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4571 event pairs, 84 based on Foata normal form. 3/910 useless extension candidates. Maximal degree in co-relation 5443. Up to 668 conditions per place. [2024-06-14 12:40:58,942 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 54 changer transitions 0/191 dead transitions. [2024-06-14 12:40:58,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 191 transitions, 2346 flow [2024-06-14 12:40:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:40:58,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 12:40:58,946 INFO L175 Difference]: Start difference. First operand has 222 places, 177 transitions, 1771 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:40:58,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 191 transitions, 2346 flow [2024-06-14 12:40:59,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 191 transitions, 2226 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:59,090 INFO L231 Difference]: Finished difference. Result has 224 places, 178 transitions, 1788 flow [2024-06-14 12:40:59,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=224, PETRI_TRANSITIONS=178} [2024-06-14 12:40:59,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-14 12:40:59,091 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 178 transitions, 1788 flow [2024-06-14 12:40:59,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:59,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:59,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:59,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:40:59,092 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:59,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1348116150, now seen corresponding path program 1 times [2024-06-14 12:40:59,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:59,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223531141] [2024-06-14 12:40:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223531141] [2024-06-14 12:40:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223531141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:59,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610968189] [2024-06-14 12:40:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:59,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:59,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:40:59,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 178 transitions, 1788 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:59,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:59,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:40:59,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:00,120 INFO L124 PetriNetUnfolderBase]: 488/907 cut-off events. [2024-06-14 12:41:00,121 INFO L125 PetriNetUnfolderBase]: For 57940/57946 co-relation queries the response was YES. [2024-06-14 12:41:00,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 907 events. 488/907 cut-off events. For 57940/57946 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4570 event pairs, 91 based on Foata normal form. 3/904 useless extension candidates. Maximal degree in co-relation 5274. Up to 582 conditions per place. [2024-06-14 12:41:00,128 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 67 changer transitions 0/191 dead transitions. [2024-06-14 12:41:00,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 191 transitions, 2204 flow [2024-06-14 12:41:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 12:41:00,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:41:00,129 INFO L175 Difference]: Start difference. First operand has 224 places, 178 transitions, 1788 flow. Second operand 9 states and 108 transitions. [2024-06-14 12:41:00,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 191 transitions, 2204 flow [2024-06-14 12:41:00,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 191 transitions, 2054 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:00,272 INFO L231 Difference]: Finished difference. Result has 226 places, 178 transitions, 1782 flow [2024-06-14 12:41:00,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1782, PETRI_PLACES=226, PETRI_TRANSITIONS=178} [2024-06-14 12:41:00,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 12:41:00,274 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 178 transitions, 1782 flow [2024-06-14 12:41:00,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:00,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:00,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:00,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:41:00,275 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:00,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1694948312, now seen corresponding path program 2 times [2024-06-14 12:41:00,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:00,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168072731] [2024-06-14 12:41:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:01,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168072731] [2024-06-14 12:41:01,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168072731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959513766] [2024-06-14 12:41:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:01,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:01,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 178 transitions, 1782 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:01,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:01,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:01,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:01,518 INFO L124 PetriNetUnfolderBase]: 484/901 cut-off events. [2024-06-14 12:41:01,518 INFO L125 PetriNetUnfolderBase]: For 54063/54069 co-relation queries the response was YES. [2024-06-14 12:41:01,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 901 events. 484/901 cut-off events. For 54063/54069 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4539 event pairs, 79 based on Foata normal form. 3/898 useless extension candidates. Maximal degree in co-relation 5083. Up to 584 conditions per place. [2024-06-14 12:41:01,525 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 113 selfloop transitions, 78 changer transitions 0/193 dead transitions. [2024-06-14 12:41:01,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 193 transitions, 2208 flow [2024-06-14 12:41:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:41:01,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 12:41:01,526 INFO L175 Difference]: Start difference. First operand has 226 places, 178 transitions, 1782 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:41:01,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 193 transitions, 2208 flow [2024-06-14 12:41:01,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 193 transitions, 2043 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:01,673 INFO L231 Difference]: Finished difference. Result has 228 places, 178 transitions, 1781 flow [2024-06-14 12:41:01,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=228, PETRI_TRANSITIONS=178} [2024-06-14 12:41:01,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 12:41:01,674 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 178 transitions, 1781 flow [2024-06-14 12:41:01,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:01,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:01,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:01,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:41:01,675 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:01,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1980285766, now seen corresponding path program 13 times [2024-06-14 12:41:01,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:01,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967102620] [2024-06-14 12:41:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:01,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:02,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:02,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967102620] [2024-06-14 12:41:02,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967102620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:02,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:02,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:02,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230021547] [2024-06-14 12:41:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:02,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:02,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:02,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 178 transitions, 1781 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:02,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:02,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:02,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:02,997 INFO L124 PetriNetUnfolderBase]: 488/909 cut-off events. [2024-06-14 12:41:02,997 INFO L125 PetriNetUnfolderBase]: For 55933/55939 co-relation queries the response was YES. [2024-06-14 12:41:03,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 909 events. 488/909 cut-off events. For 55933/55939 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4592 event pairs, 78 based on Foata normal form. 3/906 useless extension candidates. Maximal degree in co-relation 5163. Up to 695 conditions per place. [2024-06-14 12:41:03,004 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 133 selfloop transitions, 58 changer transitions 0/193 dead transitions. [2024-06-14 12:41:03,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 193 transitions, 2226 flow [2024-06-14 12:41:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:03,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:03,005 INFO L175 Difference]: Start difference. First operand has 228 places, 178 transitions, 1781 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:03,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 193 transitions, 2226 flow [2024-06-14 12:41:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 193 transitions, 2054 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:03,150 INFO L231 Difference]: Finished difference. Result has 228 places, 179 transitions, 1756 flow [2024-06-14 12:41:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1756, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2024-06-14 12:41:03,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 12:41:03,150 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 1756 flow [2024-06-14 12:41:03,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:03,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:03,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:41:03,151 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:03,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:03,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1980039502, now seen corresponding path program 3 times [2024-06-14 12:41:03,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909630893] [2024-06-14 12:41:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909630893] [2024-06-14 12:41:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909630893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:03,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:03,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033889475] [2024-06-14 12:41:03,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:04,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:04,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 1756 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:04,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:04,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:04,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:04,412 INFO L124 PetriNetUnfolderBase]: 504/947 cut-off events. [2024-06-14 12:41:04,413 INFO L125 PetriNetUnfolderBase]: For 83942/83948 co-relation queries the response was YES. [2024-06-14 12:41:04,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 947 events. 504/947 cut-off events. For 83942/83948 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4813 event pairs, 83 based on Foata normal form. 15/956 useless extension candidates. Maximal degree in co-relation 5098. Up to 578 conditions per place. [2024-06-14 12:41:04,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 71 changer transitions 9/201 dead transitions. [2024-06-14 12:41:04,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 201 transitions, 2242 flow [2024-06-14 12:41:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:41:04,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:41:04,422 INFO L175 Difference]: Start difference. First operand has 228 places, 179 transitions, 1756 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:41:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 201 transitions, 2242 flow [2024-06-14 12:41:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 201 transitions, 2094 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:04,557 INFO L231 Difference]: Finished difference. Result has 232 places, 176 transitions, 1742 flow [2024-06-14 12:41:04,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1742, PETRI_PLACES=232, PETRI_TRANSITIONS=176} [2024-06-14 12:41:04,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-14 12:41:04,558 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 176 transitions, 1742 flow [2024-06-14 12:41:04,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:04,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:04,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:04,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:41:04,559 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:04,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:04,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1341866984, now seen corresponding path program 14 times [2024-06-14 12:41:04,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:04,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272894053] [2024-06-14 12:41:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:04,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:05,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272894053] [2024-06-14 12:41:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272894053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385225881] [2024-06-14 12:41:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:05,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:05,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 176 transitions, 1742 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:05,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:05,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:05,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:05,766 INFO L124 PetriNetUnfolderBase]: 471/888 cut-off events. [2024-06-14 12:41:05,766 INFO L125 PetriNetUnfolderBase]: For 48662/48668 co-relation queries the response was YES. [2024-06-14 12:41:05,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4844 conditions, 888 events. 471/888 cut-off events. For 48662/48668 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4532 event pairs, 82 based on Foata normal form. 3/885 useless extension candidates. Maximal degree in co-relation 4732. Up to 674 conditions per place. [2024-06-14 12:41:05,773 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 137 selfloop transitions, 50 changer transitions 0/189 dead transitions. [2024-06-14 12:41:05,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 189 transitions, 2152 flow [2024-06-14 12:41:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:41:05,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:41:05,777 INFO L175 Difference]: Start difference. First operand has 232 places, 176 transitions, 1742 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:41:05,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 189 transitions, 2152 flow [2024-06-14 12:41:05,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 189 transitions, 1902 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-14 12:41:05,908 INFO L231 Difference]: Finished difference. Result has 228 places, 176 transitions, 1596 flow [2024-06-14 12:41:05,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1596, PETRI_PLACES=228, PETRI_TRANSITIONS=176} [2024-06-14 12:41:05,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 12:41:05,909 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 176 transitions, 1596 flow [2024-06-14 12:41:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:05,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:05,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:05,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:41:05,909 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:05,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:05,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1587800706, now seen corresponding path program 4 times [2024-06-14 12:41:05,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975581992] [2024-06-14 12:41:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:05,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:06,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975581992] [2024-06-14 12:41:06,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975581992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:06,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:06,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328545975] [2024-06-14 12:41:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:06,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:06,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:06,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 176 transitions, 1596 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:06,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:06,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:06,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:07,147 INFO L124 PetriNetUnfolderBase]: 484/919 cut-off events. [2024-06-14 12:41:07,148 INFO L125 PetriNetUnfolderBase]: For 67267/67273 co-relation queries the response was YES. [2024-06-14 12:41:07,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 919 events. 484/919 cut-off events. For 67267/67273 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4689 event pairs, 93 based on Foata normal form. 13/926 useless extension candidates. Maximal degree in co-relation 4482. Up to 546 conditions per place. [2024-06-14 12:41:07,154 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 61 changer transitions 10/195 dead transitions. [2024-06-14 12:41:07,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 195 transitions, 2048 flow [2024-06-14 12:41:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:41:07,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:41:07,169 INFO L175 Difference]: Start difference. First operand has 228 places, 176 transitions, 1596 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:41:07,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 195 transitions, 2048 flow [2024-06-14 12:41:07,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 195 transitions, 1896 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:07,274 INFO L231 Difference]: Finished difference. Result has 229 places, 171 transitions, 1529 flow [2024-06-14 12:41:07,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=229, PETRI_TRANSITIONS=171} [2024-06-14 12:41:07,275 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-14 12:41:07,275 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 171 transitions, 1529 flow [2024-06-14 12:41:07,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:07,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:07,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:07,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:41:07,276 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:07,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash 158202760, now seen corresponding path program 1 times [2024-06-14 12:41:07,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:07,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327479206] [2024-06-14 12:41:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:07,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327479206] [2024-06-14 12:41:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327479206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486799865] [2024-06-14 12:41:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:08,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:08,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:08,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 171 transitions, 1529 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:08,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:08,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:08,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:08,327 INFO L124 PetriNetUnfolderBase]: 454/869 cut-off events. [2024-06-14 12:41:08,327 INFO L125 PetriNetUnfolderBase]: For 41000/41006 co-relation queries the response was YES. [2024-06-14 12:41:08,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 869 events. 454/869 cut-off events. For 41000/41006 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4484 event pairs, 66 based on Foata normal form. 6/871 useless extension candidates. Maximal degree in co-relation 4252. Up to 705 conditions per place. [2024-06-14 12:41:08,333 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 159 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-06-14 12:41:08,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 188 transitions, 1943 flow [2024-06-14 12:41:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 12:41:08,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 12:41:08,335 INFO L175 Difference]: Start difference. First operand has 229 places, 171 transitions, 1529 flow. Second operand 10 states and 100 transitions. [2024-06-14 12:41:08,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 188 transitions, 1943 flow [2024-06-14 12:41:08,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 188 transitions, 1761 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:08,447 INFO L231 Difference]: Finished difference. Result has 228 places, 172 transitions, 1413 flow [2024-06-14 12:41:08,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1413, PETRI_PLACES=228, PETRI_TRANSITIONS=172} [2024-06-14 12:41:08,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 12:41:08,447 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 172 transitions, 1413 flow [2024-06-14 12:41:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:08,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:08,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:08,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:41:08,448 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:08,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 346595270, now seen corresponding path program 2 times [2024-06-14 12:41:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:08,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344548894] [2024-06-14 12:41:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344548894] [2024-06-14 12:41:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344548894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:09,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215869995] [2024-06-14 12:41:09,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:09,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:09,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:09,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 172 transitions, 1413 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:09,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:09,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:09,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:09,649 INFO L124 PetriNetUnfolderBase]: 465/890 cut-off events. [2024-06-14 12:41:09,650 INFO L125 PetriNetUnfolderBase]: For 47427/47433 co-relation queries the response was YES. [2024-06-14 12:41:09,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 890 events. 465/890 cut-off events. For 47427/47433 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4630 event pairs, 96 based on Foata normal form. 6/892 useless extension candidates. Maximal degree in co-relation 4336. Up to 761 conditions per place. [2024-06-14 12:41:09,656 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-06-14 12:41:09,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 191 transitions, 2003 flow [2024-06-14 12:41:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:41:09,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 12:41:09,657 INFO L175 Difference]: Start difference. First operand has 228 places, 172 transitions, 1413 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:41:09,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 191 transitions, 2003 flow [2024-06-14 12:41:09,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 191 transitions, 1923 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:09,785 INFO L231 Difference]: Finished difference. Result has 229 places, 174 transitions, 1417 flow [2024-06-14 12:41:09,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1417, PETRI_PLACES=229, PETRI_TRANSITIONS=174} [2024-06-14 12:41:09,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-14 12:41:09,785 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 174 transitions, 1417 flow [2024-06-14 12:41:09,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:09,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:09,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:41:09,786 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:09,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash 346600850, now seen corresponding path program 3 times [2024-06-14 12:41:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144985119] [2024-06-14 12:41:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144985119] [2024-06-14 12:41:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144985119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:10,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:10,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:10,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30139134] [2024-06-14 12:41:10,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:10,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:10,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:10,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:10,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:10,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 174 transitions, 1417 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:10,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:10,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:10,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:11,031 INFO L124 PetriNetUnfolderBase]: 462/885 cut-off events. [2024-06-14 12:41:11,032 INFO L125 PetriNetUnfolderBase]: For 42755/42761 co-relation queries the response was YES. [2024-06-14 12:41:11,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 885 events. 462/885 cut-off events. For 42755/42761 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4584 event pairs, 97 based on Foata normal form. 6/887 useless extension candidates. Maximal degree in co-relation 4126. Up to 775 conditions per place. [2024-06-14 12:41:11,039 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 31 changer transitions 0/190 dead transitions. [2024-06-14 12:41:11,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 190 transitions, 1837 flow [2024-06-14 12:41:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:41:11,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 12:41:11,041 INFO L175 Difference]: Start difference. First operand has 229 places, 174 transitions, 1417 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:41:11,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 190 transitions, 1837 flow [2024-06-14 12:41:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 190 transitions, 1789 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:11,160 INFO L231 Difference]: Finished difference. Result has 233 places, 174 transitions, 1436 flow [2024-06-14 12:41:11,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1436, PETRI_PLACES=233, PETRI_TRANSITIONS=174} [2024-06-14 12:41:11,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 12:41:11,161 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 174 transitions, 1436 flow [2024-06-14 12:41:11,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:11,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:11,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:11,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:41:11,162 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:11,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1813945678, now seen corresponding path program 4 times [2024-06-14 12:41:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:11,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143608247] [2024-06-14 12:41:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143608247] [2024-06-14 12:41:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143608247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734179870] [2024-06-14 12:41:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:12,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:12,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 174 transitions, 1436 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:12,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:12,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:12,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:12,356 INFO L124 PetriNetUnfolderBase]: 466/893 cut-off events. [2024-06-14 12:41:12,372 INFO L125 PetriNetUnfolderBase]: For 43758/43764 co-relation queries the response was YES. [2024-06-14 12:41:12,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 893 events. 466/893 cut-off events. For 43758/43764 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4669 event pairs, 95 based on Foata normal form. 6/895 useless extension candidates. Maximal degree in co-relation 4197. Up to 743 conditions per place. [2024-06-14 12:41:12,380 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-06-14 12:41:12,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 191 transitions, 1862 flow [2024-06-14 12:41:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:41:12,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 12:41:12,382 INFO L175 Difference]: Start difference. First operand has 233 places, 174 transitions, 1436 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:41:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 191 transitions, 1862 flow [2024-06-14 12:41:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 191 transitions, 1797 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:12,503 INFO L231 Difference]: Finished difference. Result has 234 places, 175 transitions, 1447 flow [2024-06-14 12:41:12,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1447, PETRI_PLACES=234, PETRI_TRANSITIONS=175} [2024-06-14 12:41:12,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 12:41:12,504 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 175 transitions, 1447 flow [2024-06-14 12:41:12,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:12,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:12,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:12,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:41:12,505 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:12,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash 342876200, now seen corresponding path program 5 times [2024-06-14 12:41:12,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:12,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894119251] [2024-06-14 12:41:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:13,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:13,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894119251] [2024-06-14 12:41:13,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894119251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:13,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:13,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278467240] [2024-06-14 12:41:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:13,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:13,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 175 transitions, 1447 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:13,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:13,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:13,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:13,628 INFO L124 PetriNetUnfolderBase]: 470/901 cut-off events. [2024-06-14 12:41:13,629 INFO L125 PetriNetUnfolderBase]: For 44998/45004 co-relation queries the response was YES. [2024-06-14 12:41:13,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 901 events. 470/901 cut-off events. For 44998/45004 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4745 event pairs, 99 based on Foata normal form. 6/903 useless extension candidates. Maximal degree in co-relation 4251. Up to 719 conditions per place. [2024-06-14 12:41:13,636 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 159 selfloop transitions, 31 changer transitions 0/192 dead transitions. [2024-06-14 12:41:13,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 192 transitions, 1875 flow [2024-06-14 12:41:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:41:13,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 12:41:13,637 INFO L175 Difference]: Start difference. First operand has 234 places, 175 transitions, 1447 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:41:13,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 192 transitions, 1875 flow [2024-06-14 12:41:13,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 192 transitions, 1809 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:13,768 INFO L231 Difference]: Finished difference. Result has 236 places, 176 transitions, 1459 flow [2024-06-14 12:41:13,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1459, PETRI_PLACES=236, PETRI_TRANSITIONS=176} [2024-06-14 12:41:13,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-14 12:41:13,768 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 176 transitions, 1459 flow [2024-06-14 12:41:13,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:13,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:13,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:13,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:41:13,769 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:13,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash 823496376, now seen corresponding path program 6 times [2024-06-14 12:41:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883910532] [2024-06-14 12:41:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:13,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883910532] [2024-06-14 12:41:14,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883910532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:14,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:14,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:14,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176544258] [2024-06-14 12:41:14,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:14,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:14,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:14,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:14,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 176 transitions, 1459 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:14,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:14,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:14,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:15,114 INFO L124 PetriNetUnfolderBase]: 474/909 cut-off events. [2024-06-14 12:41:15,114 INFO L125 PetriNetUnfolderBase]: For 46225/46231 co-relation queries the response was YES. [2024-06-14 12:41:15,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 909 events. 474/909 cut-off events. For 46225/46231 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4774 event pairs, 81 based on Foata normal form. 3/906 useless extension candidates. Maximal degree in co-relation 4303. Up to 597 conditions per place. [2024-06-14 12:41:15,120 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 71 changer transitions 0/192 dead transitions. [2024-06-14 12:41:15,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 192 transitions, 1893 flow [2024-06-14 12:41:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:41:15,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:41:15,121 INFO L175 Difference]: Start difference. First operand has 236 places, 176 transitions, 1459 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:41:15,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 192 transitions, 1893 flow [2024-06-14 12:41:15,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 192 transitions, 1825 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:15,249 INFO L231 Difference]: Finished difference. Result has 238 places, 177 transitions, 1551 flow [2024-06-14 12:41:15,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1551, PETRI_PLACES=238, PETRI_TRANSITIONS=177} [2024-06-14 12:41:15,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 12:41:15,249 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 177 transitions, 1551 flow [2024-06-14 12:41:15,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:15,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:15,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:15,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:41:15,250 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:15,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash 823773082, now seen corresponding path program 1 times [2024-06-14 12:41:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56875986] [2024-06-14 12:41:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56875986] [2024-06-14 12:41:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56875986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:15,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:15,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:15,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952831853] [2024-06-14 12:41:15,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:15,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:16,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:16,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 177 transitions, 1551 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:16,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:16,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:16,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:16,286 INFO L124 PetriNetUnfolderBase]: 522/1009 cut-off events. [2024-06-14 12:41:16,287 INFO L125 PetriNetUnfolderBase]: For 106232/106238 co-relation queries the response was YES. [2024-06-14 12:41:16,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5804 conditions, 1009 events. 522/1009 cut-off events. For 106232/106238 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5377 event pairs, 93 based on Foata normal form. 9/1012 useless extension candidates. Maximal degree in co-relation 5687. Up to 501 conditions per place. [2024-06-14 12:41:16,295 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 81 changer transitions 6/201 dead transitions. [2024-06-14 12:41:16,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 201 transitions, 2209 flow [2024-06-14 12:41:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:41:16,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:41:16,296 INFO L175 Difference]: Start difference. First operand has 238 places, 177 transitions, 1551 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:41:16,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 201 transitions, 2209 flow [2024-06-14 12:41:16,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 201 transitions, 2047 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:16,556 INFO L231 Difference]: Finished difference. Result has 240 places, 176 transitions, 1548 flow [2024-06-14 12:41:16,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1548, PETRI_PLACES=240, PETRI_TRANSITIONS=176} [2024-06-14 12:41:16,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:41:16,557 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 176 transitions, 1548 flow [2024-06-14 12:41:16,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:16,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:16,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:16,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:41:16,558 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:16,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1922189186, now seen corresponding path program 2 times [2024-06-14 12:41:16,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:16,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364716244] [2024-06-14 12:41:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364716244] [2024-06-14 12:41:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364716244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:17,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23478996] [2024-06-14 12:41:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:17,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:17,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 176 transitions, 1548 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:17,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:17,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:17,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:17,618 INFO L124 PetriNetUnfolderBase]: 508/987 cut-off events. [2024-06-14 12:41:17,618 INFO L125 PetriNetUnfolderBase]: For 101972/101978 co-relation queries the response was YES. [2024-06-14 12:41:17,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5411 conditions, 987 events. 508/987 cut-off events. For 101972/101978 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5250 event pairs, 97 based on Foata normal form. 11/992 useless extension candidates. Maximal degree in co-relation 5293. Up to 581 conditions per place. [2024-06-14 12:41:17,626 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 80 changer transitions 7/195 dead transitions. [2024-06-14 12:41:17,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 195 transitions, 2000 flow [2024-06-14 12:41:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:41:17,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:41:17,628 INFO L175 Difference]: Start difference. First operand has 240 places, 176 transitions, 1548 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:41:17,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 195 transitions, 2000 flow [2024-06-14 12:41:17,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 195 transitions, 1836 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:17,848 INFO L231 Difference]: Finished difference. Result has 240 places, 173 transitions, 1529 flow [2024-06-14 12:41:17,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=240, PETRI_TRANSITIONS=173} [2024-06-14 12:41:17,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:41:17,849 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 173 transitions, 1529 flow [2024-06-14 12:41:17,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:17,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:17,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:41:17,849 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:17,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1914570130, now seen corresponding path program 7 times [2024-06-14 12:41:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:17,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395942089] [2024-06-14 12:41:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395942089] [2024-06-14 12:41:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395942089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436146779] [2024-06-14 12:41:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:18,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:18,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 173 transitions, 1529 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:18,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:18,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:18,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:19,146 INFO L124 PetriNetUnfolderBase]: 466/901 cut-off events. [2024-06-14 12:41:19,147 INFO L125 PetriNetUnfolderBase]: For 48414/48420 co-relation queries the response was YES. [2024-06-14 12:41:19,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4505 conditions, 901 events. 466/901 cut-off events. For 48414/48420 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4752 event pairs, 79 based on Foata normal form. 3/898 useless extension candidates. Maximal degree in co-relation 4387. Up to 589 conditions per place. [2024-06-14 12:41:19,154 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 67 changer transitions 0/189 dead transitions. [2024-06-14 12:41:19,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 189 transitions, 1959 flow [2024-06-14 12:41:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:19,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:19,155 INFO L175 Difference]: Start difference. First operand has 240 places, 173 transitions, 1529 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:19,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 189 transitions, 1959 flow [2024-06-14 12:41:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 189 transitions, 1793 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:19,308 INFO L231 Difference]: Finished difference. Result has 239 places, 174 transitions, 1517 flow [2024-06-14 12:41:19,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1517, PETRI_PLACES=239, PETRI_TRANSITIONS=174} [2024-06-14 12:41:19,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 12:41:19,308 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 174 transitions, 1517 flow [2024-06-14 12:41:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:19,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:19,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:19,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:41:19,309 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:19,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1914564550, now seen corresponding path program 8 times [2024-06-14 12:41:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579843149] [2024-06-14 12:41:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579843149] [2024-06-14 12:41:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579843149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382599155] [2024-06-14 12:41:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:20,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:20,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 174 transitions, 1517 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:20,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:20,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:20,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:20,465 INFO L124 PetriNetUnfolderBase]: 470/909 cut-off events. [2024-06-14 12:41:20,465 INFO L125 PetriNetUnfolderBase]: For 48616/48622 co-relation queries the response was YES. [2024-06-14 12:41:20,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4513 conditions, 909 events. 470/909 cut-off events. For 48616/48622 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4821 event pairs, 77 based on Foata normal form. 3/906 useless extension candidates. Maximal degree in co-relation 4395. Up to 577 conditions per place. [2024-06-14 12:41:20,473 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 69 changer transitions 0/190 dead transitions. [2024-06-14 12:41:20,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 190 transitions, 1949 flow [2024-06-14 12:41:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:41:20,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:41:20,474 INFO L175 Difference]: Start difference. First operand has 239 places, 174 transitions, 1517 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:41:20,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 190 transitions, 1949 flow [2024-06-14 12:41:20,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 190 transitions, 1805 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:20,617 INFO L231 Difference]: Finished difference. Result has 241 places, 175 transitions, 1533 flow [2024-06-14 12:41:20,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1533, PETRI_PLACES=241, PETRI_TRANSITIONS=175} [2024-06-14 12:41:20,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-14 12:41:20,617 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 175 transitions, 1533 flow [2024-06-14 12:41:20,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:20,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:20,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:20,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:41:20,618 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:20,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1715268340, now seen corresponding path program 9 times [2024-06-14 12:41:20,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:20,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055512068] [2024-06-14 12:41:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:20,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:21,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055512068] [2024-06-14 12:41:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055512068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:21,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34194947] [2024-06-14 12:41:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:21,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:21,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:21,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 175 transitions, 1533 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:21,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:21,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:21,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:21,932 INFO L124 PetriNetUnfolderBase]: 474/917 cut-off events. [2024-06-14 12:41:21,932 INFO L125 PetriNetUnfolderBase]: For 49837/49843 co-relation queries the response was YES. [2024-06-14 12:41:21,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4570 conditions, 917 events. 474/917 cut-off events. For 49837/49843 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4868 event pairs, 87 based on Foata normal form. 3/914 useless extension candidates. Maximal degree in co-relation 4451. Up to 605 conditions per place. [2024-06-14 12:41:21,940 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 64 changer transitions 0/191 dead transitions. [2024-06-14 12:41:21,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 191 transitions, 1971 flow [2024-06-14 12:41:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:21,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:21,941 INFO L175 Difference]: Start difference. First operand has 241 places, 175 transitions, 1533 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:21,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 191 transitions, 1971 flow [2024-06-14 12:41:22,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 191 transitions, 1821 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:22,099 INFO L231 Difference]: Finished difference. Result has 243 places, 176 transitions, 1535 flow [2024-06-14 12:41:22,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1535, PETRI_PLACES=243, PETRI_TRANSITIONS=176} [2024-06-14 12:41:22,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-14 12:41:22,100 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 176 transitions, 1535 flow [2024-06-14 12:41:22,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:22,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:22,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:22,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:41:22,101 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:22,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash 616837356, now seen corresponding path program 10 times [2024-06-14 12:41:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:22,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574913927] [2024-06-14 12:41:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:22,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:22,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574913927] [2024-06-14 12:41:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574913927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:22,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:22,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:22,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183107395] [2024-06-14 12:41:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:22,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:22,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:23,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:23,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 176 transitions, 1535 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:23,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:23,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:23,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:23,350 INFO L124 PetriNetUnfolderBase]: 478/925 cut-off events. [2024-06-14 12:41:23,350 INFO L125 PetriNetUnfolderBase]: For 51043/51049 co-relation queries the response was YES. [2024-06-14 12:41:23,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 925 events. 478/925 cut-off events. For 51043/51049 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4930 event pairs, 87 based on Foata normal form. 3/922 useless extension candidates. Maximal degree in co-relation 4481. Up to 599 conditions per place. [2024-06-14 12:41:23,357 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 65 changer transitions 0/192 dead transitions. [2024-06-14 12:41:23,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 192 transitions, 1975 flow [2024-06-14 12:41:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:41:23,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:41:23,358 INFO L175 Difference]: Start difference. First operand has 243 places, 176 transitions, 1535 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:41:23,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 192 transitions, 1975 flow [2024-06-14 12:41:23,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 192 transitions, 1833 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:23,552 INFO L231 Difference]: Finished difference. Result has 245 places, 177 transitions, 1549 flow [2024-06-14 12:41:23,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1549, PETRI_PLACES=245, PETRI_TRANSITIONS=177} [2024-06-14 12:41:23,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 12:41:23,553 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 177 transitions, 1549 flow [2024-06-14 12:41:23,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:23,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:23,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:41:23,553 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:23,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 616693206, now seen corresponding path program 11 times [2024-06-14 12:41:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637929208] [2024-06-14 12:41:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637929208] [2024-06-14 12:41:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637929208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:24,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:24,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013229899] [2024-06-14 12:41:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:24,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:24,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 177 transitions, 1549 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:24,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:24,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:24,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:24,828 INFO L124 PetriNetUnfolderBase]: 482/933 cut-off events. [2024-06-14 12:41:24,828 INFO L125 PetriNetUnfolderBase]: For 52414/52420 co-relation queries the response was YES. [2024-06-14 12:41:24,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4654 conditions, 933 events. 482/933 cut-off events. For 52414/52420 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4973 event pairs, 89 based on Foata normal form. 3/930 useless extension candidates. Maximal degree in co-relation 4533. Up to 559 conditions per place. [2024-06-14 12:41:24,835 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-06-14 12:41:24,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 193 transitions, 1991 flow [2024-06-14 12:41:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:41:24,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:41:24,837 INFO L175 Difference]: Start difference. First operand has 245 places, 177 transitions, 1549 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:41:24,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 193 transitions, 1991 flow [2024-06-14 12:41:25,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 193 transitions, 1845 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:25,033 INFO L231 Difference]: Finished difference. Result has 247 places, 178 transitions, 1569 flow [2024-06-14 12:41:25,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1569, PETRI_PLACES=247, PETRI_TRANSITIONS=178} [2024-06-14 12:41:25,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 12:41:25,033 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 178 transitions, 1569 flow [2024-06-14 12:41:25,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:25,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:25,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:25,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:41:25,034 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:25,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:25,034 INFO L85 PathProgramCache]: Analyzing trace with hash -379965098, now seen corresponding path program 12 times [2024-06-14 12:41:25,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085525999] [2024-06-14 12:41:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085525999] [2024-06-14 12:41:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085525999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576615885] [2024-06-14 12:41:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:26,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:26,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 178 transitions, 1569 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:26,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:26,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:26,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:26,388 INFO L124 PetriNetUnfolderBase]: 486/941 cut-off events. [2024-06-14 12:41:26,388 INFO L125 PetriNetUnfolderBase]: For 53728/53734 co-relation queries the response was YES. [2024-06-14 12:41:26,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 941 events. 486/941 cut-off events. For 53728/53734 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5039 event pairs, 101 based on Foata normal form. 3/938 useless extension candidates. Maximal degree in co-relation 4599. Up to 629 conditions per place. [2024-06-14 12:41:26,396 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 63 changer transitions 0/194 dead transitions. [2024-06-14 12:41:26,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 194 transitions, 2019 flow [2024-06-14 12:41:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:26,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:26,397 INFO L175 Difference]: Start difference. First operand has 247 places, 178 transitions, 1569 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:26,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 194 transitions, 2019 flow [2024-06-14 12:41:26,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 194 transitions, 1863 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:26,571 INFO L231 Difference]: Finished difference. Result has 249 places, 179 transitions, 1569 flow [2024-06-14 12:41:26,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1569, PETRI_PLACES=249, PETRI_TRANSITIONS=179} [2024-06-14 12:41:26,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 12:41:26,572 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 179 transitions, 1569 flow [2024-06-14 12:41:26,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:26,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:26,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:41:26,573 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:26,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash -379970678, now seen corresponding path program 13 times [2024-06-14 12:41:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871015817] [2024-06-14 12:41:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871015817] [2024-06-14 12:41:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871015817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:27,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180919860] [2024-06-14 12:41:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:27,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:27,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 179 transitions, 1569 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:27,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:27,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:27,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:27,587 INFO L124 PetriNetUnfolderBase]: 490/949 cut-off events. [2024-06-14 12:41:27,587 INFO L125 PetriNetUnfolderBase]: For 54906/54912 co-relation queries the response was YES. [2024-06-14 12:41:27,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4750 conditions, 949 events. 490/949 cut-off events. For 54906/54912 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5090 event pairs, 97 based on Foata normal form. 3/946 useless extension candidates. Maximal degree in co-relation 4627. Up to 577 conditions per place. [2024-06-14 12:41:27,595 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 77 changer transitions 0/195 dead transitions. [2024-06-14 12:41:27,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 195 transitions, 2021 flow [2024-06-14 12:41:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:41:27,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:41:27,596 INFO L175 Difference]: Start difference. First operand has 249 places, 179 transitions, 1569 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:41:27,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 195 transitions, 2021 flow [2024-06-14 12:41:27,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 195 transitions, 1906 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:27,757 INFO L231 Difference]: Finished difference. Result has 252 places, 180 transitions, 1640 flow [2024-06-14 12:41:27,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1640, PETRI_PLACES=252, PETRI_TRANSITIONS=180} [2024-06-14 12:41:27,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:41:27,758 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 180 transitions, 1640 flow [2024-06-14 12:41:27,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:27,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:27,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:27,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:41:27,758 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:27,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash -910093078, now seen corresponding path program 14 times [2024-06-14 12:41:27,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:27,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765943263] [2024-06-14 12:41:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:28,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765943263] [2024-06-14 12:41:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765943263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:28,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981050629] [2024-06-14 12:41:28,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:28,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:28,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:28,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 180 transitions, 1640 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:28,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:28,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:28,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:28,975 INFO L124 PetriNetUnfolderBase]: 494/957 cut-off events. [2024-06-14 12:41:28,975 INFO L125 PetriNetUnfolderBase]: For 56393/56399 co-relation queries the response was YES. [2024-06-14 12:41:28,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 957 events. 494/957 cut-off events. For 56393/56399 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5157 event pairs, 97 based on Foata normal form. 3/954 useless extension candidates. Maximal degree in co-relation 4737. Up to 609 conditions per place. [2024-06-14 12:41:28,984 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 65 changer transitions 0/196 dead transitions. [2024-06-14 12:41:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 196 transitions, 2094 flow [2024-06-14 12:41:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:28,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:28,985 INFO L175 Difference]: Start difference. First operand has 252 places, 180 transitions, 1640 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:28,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 196 transitions, 2094 flow [2024-06-14 12:41:29,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 196 transitions, 1918 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:29,165 INFO L231 Difference]: Finished difference. Result has 254 places, 181 transitions, 1628 flow [2024-06-14 12:41:29,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1628, PETRI_PLACES=254, PETRI_TRANSITIONS=181} [2024-06-14 12:41:29,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:41:29,165 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 181 transitions, 1628 flow [2024-06-14 12:41:29,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:29,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:29,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:29,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:41:29,166 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:29,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -383689748, now seen corresponding path program 15 times [2024-06-14 12:41:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:29,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853355124] [2024-06-14 12:41:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853355124] [2024-06-14 12:41:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853355124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413693706] [2024-06-14 12:41:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:30,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:30,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 181 transitions, 1628 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:30,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:30,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:30,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:30,356 INFO L124 PetriNetUnfolderBase]: 498/965 cut-off events. [2024-06-14 12:41:30,356 INFO L125 PetriNetUnfolderBase]: For 57962/57968 co-relation queries the response was YES. [2024-06-14 12:41:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 965 events. 498/965 cut-off events. For 57962/57968 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5202 event pairs, 99 based on Foata normal form. 3/962 useless extension candidates. Maximal degree in co-relation 4757. Up to 442 conditions per place. [2024-06-14 12:41:30,365 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 73 changer transitions 0/198 dead transitions. [2024-06-14 12:41:30,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 198 transitions, 2266 flow [2024-06-14 12:41:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:30,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:30,366 INFO L175 Difference]: Start difference. First operand has 254 places, 181 transitions, 1628 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:30,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 198 transitions, 2266 flow [2024-06-14 12:41:30,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 198 transitions, 2112 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:30,549 INFO L231 Difference]: Finished difference. Result has 256 places, 182 transitions, 1654 flow [2024-06-14 12:41:30,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=182} [2024-06-14 12:41:30,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:41:30,549 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 182 transitions, 1654 flow [2024-06-14 12:41:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:30,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:41:30,550 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:30,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:30,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1003796646, now seen corresponding path program 16 times [2024-06-14 12:41:30,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:30,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810136026] [2024-06-14 12:41:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810136026] [2024-06-14 12:41:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810136026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:31,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:41:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281410886] [2024-06-14 12:41:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:31,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:41:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:41:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:41:31,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:31,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 182 transitions, 1654 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:31,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:31,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:31,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:31,871 INFO L124 PetriNetUnfolderBase]: 502/973 cut-off events. [2024-06-14 12:41:31,871 INFO L125 PetriNetUnfolderBase]: For 59455/59461 co-relation queries the response was YES. [2024-06-14 12:41:31,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 973 events. 502/973 cut-off events. For 59455/59461 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5243 event pairs, 93 based on Foata normal form. 3/970 useless extension candidates. Maximal degree in co-relation 4835. Up to 661 conditions per place. [2024-06-14 12:41:31,882 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 71 changer transitions 0/199 dead transitions. [2024-06-14 12:41:31,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 199 transitions, 2124 flow [2024-06-14 12:41:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:41:31,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:41:31,883 INFO L175 Difference]: Start difference. First operand has 256 places, 182 transitions, 1654 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:41:31,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 199 transitions, 2124 flow [2024-06-14 12:41:32,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 199 transitions, 1961 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:32,066 INFO L231 Difference]: Finished difference. Result has 259 places, 183 transitions, 1671 flow [2024-06-14 12:41:32,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1671, PETRI_PLACES=259, PETRI_TRANSITIONS=183} [2024-06-14 12:41:32,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:41:32,067 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 183 transitions, 1671 flow [2024-06-14 12:41:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:32,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:32,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:41:32,068 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:32,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1480293416, now seen corresponding path program 3 times [2024-06-14 12:41:32,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:32,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758193734] [2024-06-14 12:41:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:32,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:32,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758193734] [2024-06-14 12:41:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758193734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:32,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698261802] [2024-06-14 12:41:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:32,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:32,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 183 transitions, 1671 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:32,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:32,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:32,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:33,237 INFO L124 PetriNetUnfolderBase]: 518/1009 cut-off events. [2024-06-14 12:41:33,237 INFO L125 PetriNetUnfolderBase]: For 93045/93051 co-relation queries the response was YES. [2024-06-14 12:41:33,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5008 conditions, 1009 events. 518/1009 cut-off events. For 93045/93051 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5463 event pairs, 91 based on Foata normal form. 11/1014 useless extension candidates. Maximal degree in co-relation 4882. Up to 609 conditions per place. [2024-06-14 12:41:33,246 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 79 changer transitions 8/204 dead transitions. [2024-06-14 12:41:33,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 204 transitions, 2147 flow [2024-06-14 12:41:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:41:33,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:41:33,247 INFO L175 Difference]: Start difference. First operand has 259 places, 183 transitions, 1671 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:41:33,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 204 transitions, 2147 flow [2024-06-14 12:41:33,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 204 transitions, 1982 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:33,469 INFO L231 Difference]: Finished difference. Result has 261 places, 179 transitions, 1642 flow [2024-06-14 12:41:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1642, PETRI_PLACES=261, PETRI_TRANSITIONS=179} [2024-06-14 12:41:33,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 12:41:33,470 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 179 transitions, 1642 flow [2024-06-14 12:41:33,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:33,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:33,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:33,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:41:33,470 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:33,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1259309674, now seen corresponding path program 17 times [2024-06-14 12:41:33,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:33,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876074936] [2024-06-14 12:41:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:33,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876074936] [2024-06-14 12:41:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876074936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:34,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:34,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:41:34,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069539492] [2024-06-14 12:41:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:34,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:41:34,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:41:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:41:34,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:34,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 179 transitions, 1642 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:34,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:34,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:34,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:34,881 INFO L124 PetriNetUnfolderBase]: 496/967 cut-off events. [2024-06-14 12:41:34,882 INFO L125 PetriNetUnfolderBase]: For 61442/61448 co-relation queries the response was YES. [2024-06-14 12:41:34,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 967 events. 496/967 cut-off events. For 61442/61448 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5246 event pairs, 95 based on Foata normal form. 3/964 useless extension candidates. Maximal degree in co-relation 4784. Up to 655 conditions per place. [2024-06-14 12:41:34,891 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 68 changer transitions 0/196 dead transitions. [2024-06-14 12:41:34,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 196 transitions, 2103 flow [2024-06-14 12:41:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:41:34,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:41:34,892 INFO L175 Difference]: Start difference. First operand has 261 places, 179 transitions, 1642 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:41:34,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 196 transitions, 2103 flow [2024-06-14 12:41:35,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 196 transitions, 1938 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:35,067 INFO L231 Difference]: Finished difference. Result has 260 places, 180 transitions, 1648 flow [2024-06-14 12:41:35,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1648, PETRI_PLACES=260, PETRI_TRANSITIONS=180} [2024-06-14 12:41:35,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 12:41:35,067 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 180 transitions, 1648 flow [2024-06-14 12:41:35,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:35,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:35,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:35,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:41:35,068 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:35,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1259315254, now seen corresponding path program 18 times [2024-06-14 12:41:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:35,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001335234] [2024-06-14 12:41:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:35,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001335234] [2024-06-14 12:41:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001335234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:35,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:35,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:35,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678203180] [2024-06-14 12:41:35,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:35,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:35,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:35,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:35,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:35,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:35,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 180 transitions, 1648 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:35,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:35,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:36,260 INFO L124 PetriNetUnfolderBase]: 536/1047 cut-off events. [2024-06-14 12:41:36,261 INFO L125 PetriNetUnfolderBase]: For 112882/112888 co-relation queries the response was YES. [2024-06-14 12:41:36,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1047 events. 536/1047 cut-off events. For 112882/112888 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5715 event pairs, 109 based on Foata normal form. 3/1044 useless extension candidates. Maximal degree in co-relation 6204. Up to 603 conditions per place. [2024-06-14 12:41:36,270 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 80 changer transitions 0/204 dead transitions. [2024-06-14 12:41:36,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 204 transitions, 2370 flow [2024-06-14 12:41:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:41:36,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:41:36,271 INFO L175 Difference]: Start difference. First operand has 260 places, 180 transitions, 1648 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:41:36,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 204 transitions, 2370 flow [2024-06-14 12:41:36,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 204 transitions, 2218 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:36,545 INFO L231 Difference]: Finished difference. Result has 263 places, 182 transitions, 1724 flow [2024-06-14 12:41:36,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1724, PETRI_PLACES=263, PETRI_TRANSITIONS=182} [2024-06-14 12:41:36,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 12:41:36,546 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 182 transitions, 1724 flow [2024-06-14 12:41:36,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:36,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:36,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:36,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:41:36,546 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:36,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash -689820710, now seen corresponding path program 4 times [2024-06-14 12:41:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:36,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842505846] [2024-06-14 12:41:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:36,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842505846] [2024-06-14 12:41:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842505846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452490537] [2024-06-14 12:41:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:37,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:37,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:37,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 182 transitions, 1724 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:37,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:37,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:37,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:37,710 INFO L124 PetriNetUnfolderBase]: 577/1134 cut-off events. [2024-06-14 12:41:37,710 INFO L125 PetriNetUnfolderBase]: For 183702/183708 co-relation queries the response was YES. [2024-06-14 12:41:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1134 events. 577/1134 cut-off events. For 183702/183708 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6254 event pairs, 118 based on Foata normal form. 9/1137 useless extension candidates. Maximal degree in co-relation 7408. Up to 675 conditions per place. [2024-06-14 12:41:37,721 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 73 changer transitions 10/207 dead transitions. [2024-06-14 12:41:37,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 207 transitions, 2410 flow [2024-06-14 12:41:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:41:37,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:41:37,722 INFO L175 Difference]: Start difference. First operand has 263 places, 182 transitions, 1724 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:41:37,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 207 transitions, 2410 flow [2024-06-14 12:41:38,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 207 transitions, 2276 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:38,088 INFO L231 Difference]: Finished difference. Result has 267 places, 177 transitions, 1700 flow [2024-06-14 12:41:38,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=177} [2024-06-14 12:41:38,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:41:38,088 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 177 transitions, 1700 flow [2024-06-14 12:41:38,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:38,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:38,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:38,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:41:38,089 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:38,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1152501594, now seen corresponding path program 19 times [2024-06-14 12:41:38,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:38,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488095848] [2024-06-14 12:41:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488095848] [2024-06-14 12:41:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488095848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:38,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:38,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865861363] [2024-06-14 12:41:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:38,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:38,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:38,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:38,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 177 transitions, 1700 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:38,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:38,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:38,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:39,369 INFO L124 PetriNetUnfolderBase]: 559/1096 cut-off events. [2024-06-14 12:41:39,370 INFO L125 PetriNetUnfolderBase]: For 161352/161358 co-relation queries the response was YES. [2024-06-14 12:41:39,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7543 conditions, 1096 events. 559/1096 cut-off events. For 161352/161358 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6014 event pairs, 132 based on Foata normal form. 3/1093 useless extension candidates. Maximal degree in co-relation 7413. Up to 752 conditions per place. [2024-06-14 12:41:39,381 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-06-14 12:41:39,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 193 transitions, 2157 flow [2024-06-14 12:41:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:41:39,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 12:41:39,382 INFO L175 Difference]: Start difference. First operand has 267 places, 177 transitions, 1700 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:41:39,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 193 transitions, 2157 flow [2024-06-14 12:41:39,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 193 transitions, 2006 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:39,813 INFO L231 Difference]: Finished difference. Result has 261 places, 178 transitions, 1726 flow [2024-06-14 12:41:39,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1726, PETRI_PLACES=261, PETRI_TRANSITIONS=178} [2024-06-14 12:41:39,813 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 12:41:39,813 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 178 transitions, 1726 flow [2024-06-14 12:41:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:39,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:39,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:41:39,814 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:39,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1152496014, now seen corresponding path program 20 times [2024-06-14 12:41:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855814485] [2024-06-14 12:41:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:40,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:40,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855814485] [2024-06-14 12:41:40,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855814485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:40,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323510421] [2024-06-14 12:41:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:40,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:40,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 178 transitions, 1726 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:40,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:40,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:40,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:40,957 INFO L124 PetriNetUnfolderBase]: 563/1104 cut-off events. [2024-06-14 12:41:40,957 INFO L125 PetriNetUnfolderBase]: For 155258/155264 co-relation queries the response was YES. [2024-06-14 12:41:40,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7546 conditions, 1104 events. 563/1104 cut-off events. For 155258/155264 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6088 event pairs, 138 based on Foata normal form. 3/1101 useless extension candidates. Maximal degree in co-relation 7419. Up to 746 conditions per place. [2024-06-14 12:41:40,970 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 70 changer transitions 0/194 dead transitions. [2024-06-14 12:41:40,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 194 transitions, 2185 flow [2024-06-14 12:41:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:41:40,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 12:41:40,971 INFO L175 Difference]: Start difference. First operand has 261 places, 178 transitions, 1726 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:41:40,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 194 transitions, 2185 flow [2024-06-14 12:41:41,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 194 transitions, 2019 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:41,341 INFO L231 Difference]: Finished difference. Result has 263 places, 179 transitions, 1741 flow [2024-06-14 12:41:41,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1741, PETRI_PLACES=263, PETRI_TRANSITIONS=179} [2024-06-14 12:41:41,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 12:41:41,342 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 179 transitions, 1741 flow [2024-06-14 12:41:41,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:41,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:41,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:41:41,343 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:41,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1480552886, now seen corresponding path program 5 times [2024-06-14 12:41:41,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:41,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385268851] [2024-06-14 12:41:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:41,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:42,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:42,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385268851] [2024-06-14 12:41:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385268851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:41:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91590965] [2024-06-14 12:41:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:42,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:41:42,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:41:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:41:42,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:42,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 179 transitions, 1741 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:42,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:42,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:42,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:42,987 INFO L124 PetriNetUnfolderBase]: 565/1114 cut-off events. [2024-06-14 12:41:42,987 INFO L125 PetriNetUnfolderBase]: For 175544/175550 co-relation queries the response was YES. [2024-06-14 12:41:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7181 conditions, 1114 events. 565/1114 cut-off events. For 175544/175550 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6162 event pairs, 128 based on Foata normal form. 11/1119 useless extension candidates. Maximal degree in co-relation 7053. Up to 728 conditions per place. [2024-06-14 12:41:42,998 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 73 changer transitions 9/201 dead transitions. [2024-06-14 12:41:42,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 201 transitions, 2213 flow [2024-06-14 12:41:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:41:42,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 12:41:42,999 INFO L175 Difference]: Start difference. First operand has 263 places, 179 transitions, 1741 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:41:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 201 transitions, 2213 flow [2024-06-14 12:41:43,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 201 transitions, 2043 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:43,375 INFO L231 Difference]: Finished difference. Result has 267 places, 176 transitions, 1698 flow [2024-06-14 12:41:43,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1698, PETRI_PLACES=267, PETRI_TRANSITIONS=176} [2024-06-14 12:41:43,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:41:43,376 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 176 transitions, 1698 flow [2024-06-14 12:41:43,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:43,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:43,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:43,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:41:43,377 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:43,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash -678778820, now seen corresponding path program 6 times [2024-06-14 12:41:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:43,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650123712] [2024-06-14 12:41:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:43,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:44,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650123712] [2024-06-14 12:41:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650123712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:44,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899365049] [2024-06-14 12:41:44,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:44,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:44,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:44,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:44,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 176 transitions, 1698 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:44,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:44,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:44,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:44,588 INFO L124 PetriNetUnfolderBase]: 566/1125 cut-off events. [2024-06-14 12:41:44,589 INFO L125 PetriNetUnfolderBase]: For 196132/196138 co-relation queries the response was YES. [2024-06-14 12:41:44,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 1125 events. 566/1125 cut-off events. For 196132/196138 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6254 event pairs, 137 based on Foata normal form. 9/1128 useless extension candidates. Maximal degree in co-relation 7595. Up to 615 conditions per place. [2024-06-14 12:41:44,599 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 70 changer transitions 11/201 dead transitions. [2024-06-14 12:41:44,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 201 transitions, 2362 flow [2024-06-14 12:41:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:41:44,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:41:44,601 INFO L175 Difference]: Start difference. First operand has 267 places, 176 transitions, 1698 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:41:44,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 201 transitions, 2362 flow [2024-06-14 12:41:45,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 201 transitions, 2206 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:45,003 INFO L231 Difference]: Finished difference. Result has 265 places, 172 transitions, 1663 flow [2024-06-14 12:41:45,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1663, PETRI_PLACES=265, PETRI_TRANSITIONS=172} [2024-06-14 12:41:45,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-14 12:41:45,004 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 172 transitions, 1663 flow [2024-06-14 12:41:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:45,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:41:45,005 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1729911492, now seen corresponding path program 21 times [2024-06-14 12:41:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337516990] [2024-06-14 12:41:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:45,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337516990] [2024-06-14 12:41:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337516990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:45,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375524484] [2024-06-14 12:41:45,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:45,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:45,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:45,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:45,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 172 transitions, 1663 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:45,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:45,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:45,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:46,287 INFO L124 PetriNetUnfolderBase]: 524/1039 cut-off events. [2024-06-14 12:41:46,287 INFO L125 PetriNetUnfolderBase]: For 157804/157810 co-relation queries the response was YES. [2024-06-14 12:41:46,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6275 conditions, 1039 events. 524/1039 cut-off events. For 157804/157810 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5621 event pairs, 127 based on Foata normal form. 13/1046 useless extension candidates. Maximal degree in co-relation 6147. Up to 667 conditions per place. [2024-06-14 12:41:46,296 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 66 changer transitions 7/193 dead transitions. [2024-06-14 12:41:46,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 193 transitions, 2117 flow [2024-06-14 12:41:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:41:46,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:41:46,297 INFO L175 Difference]: Start difference. First operand has 265 places, 172 transitions, 1663 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:41:46,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 193 transitions, 2117 flow [2024-06-14 12:41:46,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 193 transitions, 1950 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:46,620 INFO L231 Difference]: Finished difference. Result has 260 places, 169 transitions, 1614 flow [2024-06-14 12:41:46,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1614, PETRI_PLACES=260, PETRI_TRANSITIONS=169} [2024-06-14 12:41:46,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 12:41:46,621 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 169 transitions, 1614 flow [2024-06-14 12:41:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:46,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:46,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:46,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:41:46,621 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:46,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1729634786, now seen corresponding path program 7 times [2024-06-14 12:41:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115882704] [2024-06-14 12:41:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115882704] [2024-06-14 12:41:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115882704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658102852] [2024-06-14 12:41:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:47,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:47,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:47,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 169 transitions, 1614 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:47,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:47,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:47,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:47,665 INFO L124 PetriNetUnfolderBase]: 527/1052 cut-off events. [2024-06-14 12:41:47,665 INFO L125 PetriNetUnfolderBase]: For 158738/158744 co-relation queries the response was YES. [2024-06-14 12:41:47,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 1052 events. 527/1052 cut-off events. For 158738/158744 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5722 event pairs, 130 based on Foata normal form. 9/1055 useless extension candidates. Maximal degree in co-relation 6593. Up to 643 conditions per place. [2024-06-14 12:41:47,674 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 63 changer transitions 8/192 dead transitions. [2024-06-14 12:41:47,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 192 transitions, 2248 flow [2024-06-14 12:41:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:41:47,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:41:47,676 INFO L175 Difference]: Start difference. First operand has 260 places, 169 transitions, 1614 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:41:47,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 192 transitions, 2248 flow [2024-06-14 12:41:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 192 transitions, 2094 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:48,069 INFO L231 Difference]: Finished difference. Result has 259 places, 166 transitions, 1569 flow [2024-06-14 12:41:48,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1569, PETRI_PLACES=259, PETRI_TRANSITIONS=166} [2024-06-14 12:41:48,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:41:48,070 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 166 transitions, 1569 flow [2024-06-14 12:41:48,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:48,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:48,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:48,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:41:48,070 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:48,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1152351864, now seen corresponding path program 22 times [2024-06-14 12:41:48,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:48,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577917631] [2024-06-14 12:41:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:48,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577917631] [2024-06-14 12:41:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577917631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:48,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:48,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026286101] [2024-06-14 12:41:48,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:48,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:48,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:48,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:48,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 166 transitions, 1569 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:48,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:48,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:48,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:49,255 INFO L124 PetriNetUnfolderBase]: 512/1019 cut-off events. [2024-06-14 12:41:49,255 INFO L125 PetriNetUnfolderBase]: For 138047/138053 co-relation queries the response was YES. [2024-06-14 12:41:49,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6680 conditions, 1019 events. 512/1019 cut-off events. For 138047/138053 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5491 event pairs, 146 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 6553. Up to 612 conditions per place. [2024-06-14 12:41:49,264 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2024-06-14 12:41:49,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 182 transitions, 2186 flow [2024-06-14 12:41:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:49,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:49,265 INFO L175 Difference]: Start difference. First operand has 259 places, 166 transitions, 1569 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:49,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 182 transitions, 2186 flow [2024-06-14 12:41:49,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 182 transitions, 2050 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:49,646 INFO L231 Difference]: Finished difference. Result has 255 places, 167 transitions, 1612 flow [2024-06-14 12:41:49,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1612, PETRI_PLACES=255, PETRI_TRANSITIONS=167} [2024-06-14 12:41:49,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:41:49,647 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 167 transitions, 1612 flow [2024-06-14 12:41:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:49,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:49,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:49,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:41:49,648 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:49,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1351803384, now seen corresponding path program 23 times [2024-06-14 12:41:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:49,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576439928] [2024-06-14 12:41:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576439928] [2024-06-14 12:41:50,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576439928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:50,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:50,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660309860] [2024-06-14 12:41:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:50,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:50,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 167 transitions, 1612 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:50,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:50,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:50,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:50,839 INFO L124 PetriNetUnfolderBase]: 516/1027 cut-off events. [2024-06-14 12:41:50,839 INFO L125 PetriNetUnfolderBase]: For 132785/132791 co-relation queries the response was YES. [2024-06-14 12:41:50,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 1027 events. 516/1027 cut-off events. For 132785/132791 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5524 event pairs, 148 based on Foata normal form. 3/1024 useless extension candidates. Maximal degree in co-relation 6605. Up to 715 conditions per place. [2024-06-14 12:41:50,848 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2024-06-14 12:41:50,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 183 transitions, 2055 flow [2024-06-14 12:41:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:50,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:50,863 INFO L175 Difference]: Start difference. First operand has 255 places, 167 transitions, 1612 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:50,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 183 transitions, 2055 flow [2024-06-14 12:41:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 183 transitions, 1856 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:51,308 INFO L231 Difference]: Finished difference. Result has 257 places, 168 transitions, 1568 flow [2024-06-14 12:41:51,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1568, PETRI_PLACES=257, PETRI_TRANSITIONS=168} [2024-06-14 12:41:51,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 12:41:51,309 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 168 transitions, 1568 flow [2024-06-14 12:41:51,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:51,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:51,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:51,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:41:51,309 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:51,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1359155034, now seen corresponding path program 24 times [2024-06-14 12:41:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658223901] [2024-06-14 12:41:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658223901] [2024-06-14 12:41:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658223901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160232702] [2024-06-14 12:41:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:52,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:52,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:52,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 168 transitions, 1568 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:52,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:52,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:52,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:52,601 INFO L124 PetriNetUnfolderBase]: 520/1035 cut-off events. [2024-06-14 12:41:52,601 INFO L125 PetriNetUnfolderBase]: For 135577/135583 co-relation queries the response was YES. [2024-06-14 12:41:52,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 1035 events. 520/1035 cut-off events. For 135577/135583 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5598 event pairs, 150 based on Foata normal form. 3/1032 useless extension candidates. Maximal degree in co-relation 6593. Up to 723 conditions per place. [2024-06-14 12:41:52,610 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 56 changer transitions 0/184 dead transitions. [2024-06-14 12:41:52,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 184 transitions, 2013 flow [2024-06-14 12:41:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:52,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:52,611 INFO L175 Difference]: Start difference. First operand has 257 places, 168 transitions, 1568 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 184 transitions, 2013 flow [2024-06-14 12:41:52,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 184 transitions, 1859 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:52,988 INFO L231 Difference]: Finished difference. Result has 259 places, 169 transitions, 1571 flow [2024-06-14 12:41:52,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1571, PETRI_PLACES=259, PETRI_TRANSITIONS=169} [2024-06-14 12:41:52,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:41:52,989 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 169 transitions, 1571 flow [2024-06-14 12:41:53,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:53,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:53,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:53,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:41:53,004 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:53,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:53,005 INFO L85 PathProgramCache]: Analyzing trace with hash -10705734, now seen corresponding path program 8 times [2024-06-14 12:41:53,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:53,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024968459] [2024-06-14 12:41:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:53,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:53,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:53,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024968459] [2024-06-14 12:41:53,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024968459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:53,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:53,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022725549] [2024-06-14 12:41:53,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:53,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:53,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:53,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 169 transitions, 1571 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:53,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:53,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:53,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:53,967 INFO L124 PetriNetUnfolderBase]: 536/1071 cut-off events. [2024-06-14 12:41:53,968 INFO L125 PetriNetUnfolderBase]: For 171538/171544 co-relation queries the response was YES. [2024-06-14 12:41:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 1071 events. 536/1071 cut-off events. For 171538/171544 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5868 event pairs, 154 based on Foata normal form. 11/1076 useless extension candidates. Maximal degree in co-relation 6661. Up to 708 conditions per place. [2024-06-14 12:41:53,977 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 56 changer transitions 7/188 dead transitions. [2024-06-14 12:41:53,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 188 transitions, 2007 flow [2024-06-14 12:41:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:41:53,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:41:53,978 INFO L175 Difference]: Start difference. First operand has 259 places, 169 transitions, 1571 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:41:53,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 188 transitions, 2007 flow [2024-06-14 12:41:54,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 188 transitions, 1851 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:54,333 INFO L231 Difference]: Finished difference. Result has 260 places, 166 transitions, 1511 flow [2024-06-14 12:41:54,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1511, PETRI_PLACES=260, PETRI_TRANSITIONS=166} [2024-06-14 12:41:54,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 12:41:54,334 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 166 transitions, 1511 flow [2024-06-14 12:41:54,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:54,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:54,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:41:54,335 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:54,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:54,335 INFO L85 PathProgramCache]: Analyzing trace with hash -10696434, now seen corresponding path program 9 times [2024-06-14 12:41:54,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:54,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933288343] [2024-06-14 12:41:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:55,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:55,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933288343] [2024-06-14 12:41:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933288343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:55,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144003007] [2024-06-14 12:41:55,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:55,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:55,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:55,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:55,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 166 transitions, 1511 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:55,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:55,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:55,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:55,477 INFO L124 PetriNetUnfolderBase]: 525/1058 cut-off events. [2024-06-14 12:41:55,478 INFO L125 PetriNetUnfolderBase]: For 174370/174376 co-relation queries the response was YES. [2024-06-14 12:41:55,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6849 conditions, 1058 events. 525/1058 cut-off events. For 174370/174376 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5788 event pairs, 155 based on Foata normal form. 9/1061 useless extension candidates. Maximal degree in co-relation 6721. Up to 648 conditions per place. [2024-06-14 12:41:55,487 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 53 changer transitions 8/185 dead transitions. [2024-06-14 12:41:55,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 185 transitions, 2115 flow [2024-06-14 12:41:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:41:55,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:41:55,488 INFO L175 Difference]: Start difference. First operand has 260 places, 166 transitions, 1511 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:41:55,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 185 transitions, 2115 flow [2024-06-14 12:41:55,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 185 transitions, 1961 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:55,816 INFO L231 Difference]: Finished difference. Result has 258 places, 162 transitions, 1439 flow [2024-06-14 12:41:55,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=258, PETRI_TRANSITIONS=162} [2024-06-14 12:41:55,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:41:55,816 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 162 transitions, 1439 flow [2024-06-14 12:41:55,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:55,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:55,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:55,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:41:55,817 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:55,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash -18330370, now seen corresponding path program 25 times [2024-06-14 12:41:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034472406] [2024-06-14 12:41:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:55,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034472406] [2024-06-14 12:41:56,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034472406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:56,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:56,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889139470] [2024-06-14 12:41:56,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:56,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:56,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:56,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 162 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:56,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:56,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:56,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:57,047 INFO L124 PetriNetUnfolderBase]: 503/1012 cut-off events. [2024-06-14 12:41:57,047 INFO L125 PetriNetUnfolderBase]: For 139989/139995 co-relation queries the response was YES. [2024-06-14 12:41:57,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6411 conditions, 1012 events. 503/1012 cut-off events. For 139989/139995 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5455 event pairs, 154 based on Foata normal form. 3/1009 useless extension candidates. Maximal degree in co-relation 6284. Up to 680 conditions per place. [2024-06-14 12:41:57,056 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 56 changer transitions 0/176 dead transitions. [2024-06-14 12:41:57,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 176 transitions, 1823 flow [2024-06-14 12:41:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:41:57,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 12:41:57,057 INFO L175 Difference]: Start difference. First operand has 258 places, 162 transitions, 1439 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:41:57,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 176 transitions, 1823 flow [2024-06-14 12:41:57,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 176 transitions, 1651 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:57,327 INFO L231 Difference]: Finished difference. Result has 254 places, 162 transitions, 1383 flow [2024-06-14 12:41:57,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1383, PETRI_PLACES=254, PETRI_TRANSITIONS=162} [2024-06-14 12:41:57,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:41:57,328 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 162 transitions, 1383 flow [2024-06-14 12:41:57,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:57,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:57,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:57,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:41:57,328 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:57,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash 37645743, now seen corresponding path program 1 times [2024-06-14 12:41:57,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:57,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957493463] [2024-06-14 12:41:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:57,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:58,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957493463] [2024-06-14 12:41:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957493463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:58,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:41:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027632397] [2024-06-14 12:41:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:58,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:41:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:41:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:41:58,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:58,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 162 transitions, 1383 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:58,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:58,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:58,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:58,526 INFO L124 PetriNetUnfolderBase]: 511/1032 cut-off events. [2024-06-14 12:41:58,526 INFO L125 PetriNetUnfolderBase]: For 143556/143562 co-relation queries the response was YES. [2024-06-14 12:41:58,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 1032 events. 511/1032 cut-off events. For 143556/143562 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5606 event pairs, 138 based on Foata normal form. 10/1038 useless extension candidates. Maximal degree in co-relation 6081. Up to 844 conditions per place. [2024-06-14 12:41:58,534 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 12 changer transitions 32/182 dead transitions. [2024-06-14 12:41:58,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 182 transitions, 1789 flow [2024-06-14 12:41:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 12:41:58,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-14 12:41:58,535 INFO L175 Difference]: Start difference. First operand has 254 places, 162 transitions, 1383 flow. Second operand 11 states and 109 transitions. [2024-06-14 12:41:58,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 182 transitions, 1789 flow [2024-06-14 12:41:58,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 182 transitions, 1561 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:58,855 INFO L231 Difference]: Finished difference. Result has 254 places, 146 transitions, 1030 flow [2024-06-14 12:41:58,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1030, PETRI_PLACES=254, PETRI_TRANSITIONS=146} [2024-06-14 12:41:58,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:41:58,855 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 146 transitions, 1030 flow [2024-06-14 12:41:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:58,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:58,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:58,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:41:58,856 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:58,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1947187465, now seen corresponding path program 2 times [2024-06-14 12:41:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:58,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646726227] [2024-06-14 12:41:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:59,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:59,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646726227] [2024-06-14 12:41:59,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646726227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:59,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729419791] [2024-06-14 12:41:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:59,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:59,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:59,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:41:59,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 146 transitions, 1030 flow. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:59,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:59,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:41:59,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:59,785 INFO L124 PetriNetUnfolderBase]: 451/918 cut-off events. [2024-06-14 12:41:59,786 INFO L125 PetriNetUnfolderBase]: For 146170/146176 co-relation queries the response was YES. [2024-06-14 12:41:59,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5483 conditions, 918 events. 451/918 cut-off events. For 146170/146176 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4840 event pairs, 87 based on Foata normal form. 7/919 useless extension candidates. Maximal degree in co-relation 5374. Up to 278 conditions per place. [2024-06-14 12:41:59,793 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 57 changer transitions 22/160 dead transitions. [2024-06-14 12:41:59,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 160 transitions, 1376 flow [2024-06-14 12:41:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-14 12:41:59,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-14 12:41:59,794 INFO L175 Difference]: Start difference. First operand has 254 places, 146 transitions, 1030 flow. Second operand 10 states and 95 transitions. [2024-06-14 12:41:59,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 160 transitions, 1376 flow [2024-06-14 12:42:00,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 160 transitions, 1318 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 12:42:00,041 INFO L231 Difference]: Finished difference. Result has 234 places, 134 transitions, 1024 flow [2024-06-14 12:42:00,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1024, PETRI_PLACES=234, PETRI_TRANSITIONS=134} [2024-06-14 12:42:00,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 12:42:00,041 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 134 transitions, 1024 flow [2024-06-14 12:42:00,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:00,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:00,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:00,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:42:00,042 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:00,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1025431259, now seen corresponding path program 3 times [2024-06-14 12:42:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:00,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479184565] [2024-06-14 12:42:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:00,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:00,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:00,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479184565] [2024-06-14 12:42:00,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479184565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:00,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:00,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049987337] [2024-06-14 12:42:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:00,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:00,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:00,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 134 transitions, 1024 flow. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:00,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:00,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:00,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:01,134 INFO L124 PetriNetUnfolderBase]: 409/844 cut-off events. [2024-06-14 12:42:01,134 INFO L125 PetriNetUnfolderBase]: For 130468/130474 co-relation queries the response was YES. [2024-06-14 12:42:01,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5238 conditions, 844 events. 409/844 cut-off events. For 130468/130474 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4380 event pairs, 106 based on Foata normal form. 7/845 useless extension candidates. Maximal degree in co-relation 5135. Up to 412 conditions per place. [2024-06-14 12:42:01,140 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 51 changer transitions 19/148 dead transitions. [2024-06-14 12:42:01,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 148 transitions, 1350 flow [2024-06-14 12:42:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:42:01,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 12:42:01,141 INFO L175 Difference]: Start difference. First operand has 234 places, 134 transitions, 1024 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:42:01,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 148 transitions, 1350 flow [2024-06-14 12:42:01,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 148 transitions, 1218 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-14 12:42:01,352 INFO L231 Difference]: Finished difference. Result has 218 places, 121 transitions, 934 flow [2024-06-14 12:42:01,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=934, PETRI_PLACES=218, PETRI_TRANSITIONS=121} [2024-06-14 12:42:01,352 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-14 12:42:01,352 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 121 transitions, 934 flow [2024-06-14 12:42:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:01,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:01,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:01,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:42:01,353 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:01,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash 717053395, now seen corresponding path program 4 times [2024-06-14 12:42:01,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:01,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446628517] [2024-06-14 12:42:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446628517] [2024-06-14 12:42:02,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446628517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:02,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:02,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:02,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682488703] [2024-06-14 12:42:02,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:02,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:02,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:02,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:02,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 121 transitions, 934 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:02,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:02,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:02,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:02,529 INFO L124 PetriNetUnfolderBase]: 352/737 cut-off events. [2024-06-14 12:42:02,529 INFO L125 PetriNetUnfolderBase]: For 89367/89373 co-relation queries the response was YES. [2024-06-14 12:42:02,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 737 events. 352/737 cut-off events. For 89367/89373 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3706 event pairs, 93 based on Foata normal form. 7/738 useless extension candidates. Maximal degree in co-relation 4125. Up to 359 conditions per place. [2024-06-14 12:42:02,534 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 37 changer transitions 30/135 dead transitions. [2024-06-14 12:42:02,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 135 transitions, 1236 flow [2024-06-14 12:42:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:02,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:42:02,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 12:42:02,535 INFO L175 Difference]: Start difference. First operand has 218 places, 121 transitions, 934 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:42:02,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 135 transitions, 1236 flow [2024-06-14 12:42:02,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 135 transitions, 1116 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-14 12:42:02,683 INFO L231 Difference]: Finished difference. Result has 202 places, 99 transitions, 765 flow [2024-06-14 12:42:02,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=765, PETRI_PLACES=202, PETRI_TRANSITIONS=99} [2024-06-14 12:42:02,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 12:42:02,684 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 99 transitions, 765 flow [2024-06-14 12:42:02,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:02,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:02,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:02,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:42:02,686 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:02,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1020962609, now seen corresponding path program 5 times [2024-06-14 12:42:02,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:02,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809275360] [2024-06-14 12:42:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809275360] [2024-06-14 12:42:03,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809275360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:03,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:03,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:03,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778737897] [2024-06-14 12:42:03,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:03,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:03,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:03,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:03,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 99 transitions, 765 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:03,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:03,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:03,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:03,979 INFO L124 PetriNetUnfolderBase]: 286/611 cut-off events. [2024-06-14 12:42:03,979 INFO L125 PetriNetUnfolderBase]: For 71781/71787 co-relation queries the response was YES. [2024-06-14 12:42:03,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 611 events. 286/611 cut-off events. For 71781/71787 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2895 event pairs, 81 based on Foata normal form. 7/612 useless extension candidates. Maximal degree in co-relation 3501. Up to 279 conditions per place. [2024-06-14 12:42:03,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 17 changer transitions 50/113 dead transitions. [2024-06-14 12:42:03,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 113 transitions, 1019 flow [2024-06-14 12:42:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-14 12:42:03,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-14 12:42:03,983 INFO L175 Difference]: Start difference. First operand has 202 places, 99 transitions, 765 flow. Second operand 10 states and 99 transitions. [2024-06-14 12:42:03,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 113 transitions, 1019 flow [2024-06-14 12:42:04,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 113 transitions, 915 flow, removed 15 selfloop flow, removed 22 redundant places. [2024-06-14 12:42:04,070 INFO L231 Difference]: Finished difference. Result has 172 places, 60 transitions, 415 flow [2024-06-14 12:42:04,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=172, PETRI_TRANSITIONS=60} [2024-06-14 12:42:04,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 12:42:04,071 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 60 transitions, 415 flow [2024-06-14 12:42:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:04,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:04,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:04,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:42:04,071 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:04,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:04,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1843511991, now seen corresponding path program 6 times [2024-06-14 12:42:04,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:04,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596890521] [2024-06-14 12:42:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596890521] [2024-06-14 12:42:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596890521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:04,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726433742] [2024-06-14 12:42:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:04,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:05,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:05,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 60 transitions, 415 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:05,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:05,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:05,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:05,297 INFO L124 PetriNetUnfolderBase]: 171/367 cut-off events. [2024-06-14 12:42:05,298 INFO L125 PetriNetUnfolderBase]: For 36221/36221 co-relation queries the response was YES. [2024-06-14 12:42:05,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 367 events. 171/367 cut-off events. For 36221/36221 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1550 event pairs, 51 based on Foata normal form. 6/372 useless extension candidates. Maximal degree in co-relation 1989. Up to 210 conditions per place. [2024-06-14 12:42:05,300 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 15 changer transitions 18/73 dead transitions. [2024-06-14 12:42:05,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 73 transitions, 589 flow [2024-06-14 12:42:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-14 12:42:05,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-14 12:42:05,301 INFO L175 Difference]: Start difference. First operand has 172 places, 60 transitions, 415 flow. Second operand 10 states and 95 transitions. [2024-06-14 12:42:05,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 73 transitions, 589 flow [2024-06-14 12:42:05,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 73 transitions, 487 flow, removed 24 selfloop flow, removed 32 redundant places. [2024-06-14 12:42:05,334 INFO L231 Difference]: Finished difference. Result has 120 places, 50 transitions, 302 flow [2024-06-14 12:42:05,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=302, PETRI_PLACES=120, PETRI_TRANSITIONS=50} [2024-06-14 12:42:05,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 12:42:05,334 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 50 transitions, 302 flow [2024-06-14 12:42:05,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:05,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:05,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:05,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:42:05,335 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:05,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1367639445, now seen corresponding path program 7 times [2024-06-14 12:42:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127239002] [2024-06-14 12:42:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:06,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127239002] [2024-06-14 12:42:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127239002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:06,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794238243] [2024-06-14 12:42:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:06,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:06,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 50 transitions, 302 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:06,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:06,613 INFO L124 PetriNetUnfolderBase]: 142/312 cut-off events. [2024-06-14 12:42:06,613 INFO L125 PetriNetUnfolderBase]: For 17258/17258 co-relation queries the response was YES. [2024-06-14 12:42:06,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 312 events. 142/312 cut-off events. For 17258/17258 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1250 event pairs, 49 based on Foata normal form. 6/317 useless extension candidates. Maximal degree in co-relation 1492. Up to 192 conditions per place. [2024-06-14 12:42:06,615 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 31 selfloop transitions, 17 changer transitions 14/64 dead transitions. [2024-06-14 12:42:06,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 64 transitions, 456 flow [2024-06-14 12:42:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-14 12:42:06,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-14 12:42:06,615 INFO L175 Difference]: Start difference. First operand has 120 places, 50 transitions, 302 flow. Second operand 11 states and 100 transitions. [2024-06-14 12:42:06,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 64 transitions, 456 flow [2024-06-14 12:42:06,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 64 transitions, 410 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-14 12:42:06,630 INFO L231 Difference]: Finished difference. Result has 106 places, 46 transitions, 275 flow [2024-06-14 12:42:06,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=275, PETRI_PLACES=106, PETRI_TRANSITIONS=46} [2024-06-14 12:42:06,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 12:42:06,630 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 46 transitions, 275 flow [2024-06-14 12:42:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:06,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:06,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:06,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:42:06,631 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:06,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1046565433, now seen corresponding path program 8 times [2024-06-14 12:42:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:06,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755274925] [2024-06-14 12:42:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:07,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755274925] [2024-06-14 12:42:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755274925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021406721] [2024-06-14 12:42:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:07,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:07,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 46 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:07,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:07,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:07,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:07,668 INFO L124 PetriNetUnfolderBase]: 128/286 cut-off events. [2024-06-14 12:42:07,668 INFO L125 PetriNetUnfolderBase]: For 11482/11482 co-relation queries the response was YES. [2024-06-14 12:42:07,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 286 events. 128/286 cut-off events. For 11482/11482 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1105 event pairs, 47 based on Foata normal form. 6/291 useless extension candidates. Maximal degree in co-relation 1300. Up to 174 conditions per place. [2024-06-14 12:42:07,669 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 31 selfloop transitions, 11 changer transitions 15/59 dead transitions. [2024-06-14 12:42:07,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 59 transitions, 417 flow [2024-06-14 12:42:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-14 12:42:07,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.290625 [2024-06-14 12:42:07,670 INFO L175 Difference]: Start difference. First operand has 106 places, 46 transitions, 275 flow. Second operand 10 states and 93 transitions. [2024-06-14 12:42:07,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 59 transitions, 417 flow [2024-06-14 12:42:07,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 59 transitions, 375 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:07,680 INFO L231 Difference]: Finished difference. Result has 99 places, 41 transitions, 235 flow [2024-06-14 12:42:07,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=41} [2024-06-14 12:42:07,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-14 12:42:07,680 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 41 transitions, 235 flow [2024-06-14 12:42:07,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:07,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:07,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:07,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:42:07,681 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:07,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1363170795, now seen corresponding path program 9 times [2024-06-14 12:42:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:07,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097587342] [2024-06-14 12:42:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097587342] [2024-06-14 12:42:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097587342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:08,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:08,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265571472] [2024-06-14 12:42:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:08,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:08,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:08,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 41 transitions, 235 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:08,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:08,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:08,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:08,786 INFO L124 PetriNetUnfolderBase]: 115/259 cut-off events. [2024-06-14 12:42:08,786 INFO L125 PetriNetUnfolderBase]: For 9356/9356 co-relation queries the response was YES. [2024-06-14 12:42:08,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 259 events. 115/259 cut-off events. For 9356/9356 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 958 event pairs, 16 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 1162. Up to 116 conditions per place. [2024-06-14 12:42:08,787 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 25 selfloop transitions, 13 changer transitions 14/54 dead transitions. [2024-06-14 12:42:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 54 transitions, 367 flow [2024-06-14 12:42:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-06-14 12:42:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28125 [2024-06-14 12:42:08,788 INFO L175 Difference]: Start difference. First operand has 99 places, 41 transitions, 235 flow. Second operand 10 states and 90 transitions. [2024-06-14 12:42:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 54 transitions, 367 flow [2024-06-14 12:42:08,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 54 transitions, 335 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:08,797 INFO L231 Difference]: Finished difference. Result has 91 places, 35 transitions, 204 flow [2024-06-14 12:42:08,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=91, PETRI_TRANSITIONS=35} [2024-06-14 12:42:08,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 12:42:08,798 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 35 transitions, 204 flow [2024-06-14 12:42:08,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:08,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:08,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:08,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:42:08,798 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:08,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash -155991701, now seen corresponding path program 10 times [2024-06-14 12:42:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:08,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321481354] [2024-06-14 12:42:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:08,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321481354] [2024-06-14 12:42:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321481354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:09,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:09,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:42:09,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948493368] [2024-06-14 12:42:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:42:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:42:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:42:10,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:10,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 35 transitions, 204 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:10,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:10,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:10,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:10,246 INFO L124 PetriNetUnfolderBase]: 98/224 cut-off events. [2024-06-14 12:42:10,247 INFO L125 PetriNetUnfolderBase]: For 6870/6870 co-relation queries the response was YES. [2024-06-14 12:42:10,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 224 events. 98/224 cut-off events. For 6870/6870 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 792 event pairs, 41 based on Foata normal form. 6/229 useless extension candidates. Maximal degree in co-relation 1010. Up to 138 conditions per place. [2024-06-14 12:42:10,248 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 25 selfloop transitions, 11 changer transitions 12/50 dead transitions. [2024-06-14 12:42:10,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 50 transitions, 332 flow [2024-06-14 12:42:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-14 12:42:10,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2682291666666667 [2024-06-14 12:42:10,249 INFO L175 Difference]: Start difference. First operand has 91 places, 35 transitions, 204 flow. Second operand 12 states and 103 transitions. [2024-06-14 12:42:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 50 transitions, 332 flow [2024-06-14 12:42:10,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 50 transitions, 294 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:10,254 INFO L231 Difference]: Finished difference. Result has 83 places, 31 transitions, 171 flow [2024-06-14 12:42:10,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=171, PETRI_PLACES=83, PETRI_TRANSITIONS=31} [2024-06-14 12:42:10,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 12:42:10,254 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 31 transitions, 171 flow [2024-06-14 12:42:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:10,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:10,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:10,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:42:10,255 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:10,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1052923575, now seen corresponding path program 11 times [2024-06-14 12:42:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625617424] [2024-06-14 12:42:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:10,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:11,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625617424] [2024-06-14 12:42:11,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625617424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:11,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:11,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:11,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388797695] [2024-06-14 12:42:11,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:11,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:11,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:11,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 31 transitions, 171 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:11,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:11,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:11,481 INFO L124 PetriNetUnfolderBase]: 74/172 cut-off events. [2024-06-14 12:42:11,485 INFO L125 PetriNetUnfolderBase]: For 3230/3230 co-relation queries the response was YES. [2024-06-14 12:42:11,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 172 events. 74/172 cut-off events. For 3230/3230 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 531 event pairs, 30 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 670. Up to 95 conditions per place. [2024-06-14 12:42:11,486 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 20 selfloop transitions, 8 changer transitions 14/44 dead transitions. [2024-06-14 12:42:11,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 44 transitions, 283 flow [2024-06-14 12:42:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-14 12:42:11,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-06-14 12:42:11,487 INFO L175 Difference]: Start difference. First operand has 83 places, 31 transitions, 171 flow. Second operand 11 states and 96 transitions. [2024-06-14 12:42:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 44 transitions, 283 flow [2024-06-14 12:42:11,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 44 transitions, 253 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:11,489 INFO L231 Difference]: Finished difference. Result has 76 places, 26 transitions, 134 flow [2024-06-14 12:42:11,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=134, PETRI_PLACES=76, PETRI_TRANSITIONS=26} [2024-06-14 12:42:11,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-14 12:42:11,490 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 26 transitions, 134 flow [2024-06-14 12:42:11,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:11,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:11,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:42:11,490 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:11,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash -383892851, now seen corresponding path program 12 times [2024-06-14 12:42:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862022044] [2024-06-14 12:42:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:12,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862022044] [2024-06-14 12:42:12,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862022044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:12,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:42:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673501112] [2024-06-14 12:42:12,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:42:12,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:42:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:42:12,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:12,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 26 transitions, 134 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:12,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:12,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:12,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:12,912 INFO L124 PetriNetUnfolderBase]: 49/117 cut-off events. [2024-06-14 12:42:12,913 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2024-06-14 12:42:12,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 117 events. 49/117 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 280 event pairs, 15 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 394. Up to 52 conditions per place. [2024-06-14 12:42:12,913 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 8 changer transitions 11/40 dead transitions. [2024-06-14 12:42:12,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 40 transitions, 240 flow [2024-06-14 12:42:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 99 transitions. [2024-06-14 12:42:12,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2578125 [2024-06-14 12:42:12,914 INFO L175 Difference]: Start difference. First operand has 76 places, 26 transitions, 134 flow. Second operand 12 states and 99 transitions. [2024-06-14 12:42:12,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 40 transitions, 240 flow [2024-06-14 12:42:12,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 40 transitions, 214 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:12,915 INFO L231 Difference]: Finished difference. Result has 67 places, 23 transitions, 112 flow [2024-06-14 12:42:12,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=67, PETRI_TRANSITIONS=23} [2024-06-14 12:42:12,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-14 12:42:12,915 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 23 transitions, 112 flow [2024-06-14 12:42:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:12,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:12,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:12,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:42:12,916 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:12,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash -384065831, now seen corresponding path program 13 times [2024-06-14 12:42:12,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:12,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293929536] [2024-06-14 12:42:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293929536] [2024-06-14 12:42:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293929536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:13,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005879756] [2024-06-14 12:42:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:13,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 12:42:13,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 23 transitions, 112 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:13,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:13,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 12:42:13,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:14,144 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2024-06-14 12:42:14,145 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-06-14 12:42:14,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 66 events. 24/66 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 176. Up to 24 conditions per place. [2024-06-14 12:42:14,145 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 12:42:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 31 transitions, 162 flow [2024-06-14 12:42:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-14 12:42:14,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24147727272727273 [2024-06-14 12:42:14,146 INFO L175 Difference]: Start difference. First operand has 67 places, 23 transitions, 112 flow. Second operand 11 states and 85 transitions. [2024-06-14 12:42:14,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 31 transitions, 162 flow [2024-06-14 12:42:14,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-14 12:42:14,147 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2024-06-14 12:42:14,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2024-06-14 12:42:14,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-14 12:42:14,147 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2024-06-14 12:42:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:14,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:42:14,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:42:14,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:42:14,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:42:14,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:42:14,151 INFO L445 BasicCegarLoop]: Path program histogram: [25, 14, 13, 11, 9, 8, 7, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:14,153 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:42:14,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:42:14,156 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:42:14,156 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:42:14,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:42:14 BasicIcfg [2024-06-14 12:42:14,157 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:42:14,157 INFO L158 Benchmark]: Toolchain (without parser) took 151017.16ms. Allocated memory was 184.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 107.9MB in the beginning and 751.3MB in the end (delta: -643.5MB). Peak memory consumption was 652.2MB. Max. memory is 16.1GB. [2024-06-14 12:42:14,157 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 184.5MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:42:14,157 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:42:14,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.10ms. Allocated memory is still 184.5MB. Free memory was 107.7MB in the beginning and 74.8MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:42:14,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.80ms. Allocated memory is still 184.5MB. Free memory was 74.8MB in the beginning and 153.2MB in the end (delta: -78.4MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2024-06-14 12:42:14,158 INFO L158 Benchmark]: Boogie Preprocessor took 74.92ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 150.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:42:14,158 INFO L158 Benchmark]: RCFGBuilder took 533.43ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 99.8MB in the end (delta: 49.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-14 12:42:14,158 INFO L158 Benchmark]: TraceAbstraction took 149725.85ms. Allocated memory was 184.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 99.1MB in the beginning and 751.3MB in the end (delta: -652.2MB). Peak memory consumption was 644.1MB. Max. memory is 16.1GB. [2024-06-14 12:42:14,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 184.5MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.10ms. Allocated memory is still 184.5MB. Free memory was 107.7MB in the beginning and 74.8MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.80ms. Allocated memory is still 184.5MB. Free memory was 74.8MB in the beginning and 153.2MB in the end (delta: -78.4MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.92ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 150.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 533.43ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 99.8MB in the end (delta: 49.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 149725.85ms. Allocated memory was 184.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 99.1MB in the beginning and 751.3MB in the end (delta: -652.2MB). Peak memory consumption was 644.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 803]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 804]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 149.6s, OverallIterations: 129, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 54.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7471 SdHoareTripleChecker+Valid, 22.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6366 mSDsluCounter, 5770 SdHoareTripleChecker+Invalid, 19.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5022 mSDsCounter, 1515 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38483 IncrementalHoareTripleChecker+Invalid, 39998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1515 mSolverCounterUnsat, 748 mSDtfsCounter, 38483 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1309 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2802 ImplicationChecksByTransitivity, 31.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1955occurred in iteration=60, InterpolantAutomatonStates: 1175, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 93.3s InterpolantComputationTime, 2218 NumberOfCodeBlocks, 2218 NumberOfCodeBlocksAsserted, 129 NumberOfCheckSat, 2089 ConstructedInterpolants, 0 QuantifiedInterpolants, 91011 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! [2024-06-14 12:42:14,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE