./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 bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/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-bcb38a6-m [2024-06-03 19:57:20,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:57:20,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:57:20,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:57:20,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:57:20,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:57:20,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:57:20,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:57:20,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:57:20,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:57:20,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:57:20,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:57:20,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:57:20,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:57:20,588 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:57:20,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:57:20,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:57:20,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:57:20,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:57:20,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:57:20,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:57:20,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:57:20,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:57:20,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:57:20,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:57:20,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:57:20,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:57:20,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:57:20,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:57:20,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:57:20,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:57:20,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:57:20,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:57:20,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:57:20,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:57:20,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:57:20,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:57:20,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:57:20,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:57:20,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:57:20,594 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:57:20,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:57:20,594 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:57:20,595 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:57:20,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:57:20,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:57:20,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:57:20,810 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:57:20,811 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:57:20,812 INFO L431 ainManager$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 [2024-06-03 19:57:20,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:57:20,994 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:57:20,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-03 19:57:22,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:57:22,264 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:57:22,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-03 19:57:22,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e3a3286/371c438ed6b24a389f4630ea12107d4c/FLAGe9add7e33 [2024-06-03 19:57:22,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24e3a3286/371c438ed6b24a389f4630ea12107d4c [2024-06-03 19:57:22,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:57:22,302 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:57:22,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:57:22,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:57:22,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:57:22,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:57:20" (1/2) ... [2024-06-03 19:57:22,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ef9fc4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:57:22, skipping insertion in model container [2024-06-03 19:57:22,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:57:20" (1/2) ... [2024-06-03 19:57:22,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34d3f97b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:57:22, skipping insertion in model container [2024-06-03 19:57:22,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:57:22" (2/2) ... [2024-06-03 19:57:22,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ef9fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22, skipping insertion in model container [2024-06-03 19:57:22,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:57:22" (2/2) ... [2024-06-03 19:57:22,317 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:57:22,374 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:57:22,375 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$mem_tmp == 2))) [2024-06-03 19:57:22,375 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ((((((((((((((! multithreaded || x$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))) [2024-06-03 19:57:22,375 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:57:22,375 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-03 19:57:22,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:57:22,726 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:57:22,733 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:57:22,813 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:57:22,840 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:57:22,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22 WrapperNode [2024-06-03 19:57:22,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:57:22,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:57:22,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:57:22,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:57:22,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,900 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-03 19:57:22,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:57:22,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:57:22,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:57:22,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:57:22,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,945 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 19:57:22,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:57:22,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:57:22,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:57:22,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:57:22,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (1/1) ... [2024-06-03 19:57:22,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:57:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:57:22,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 19:57:23,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 19:57:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:57:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:57:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:57:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:57:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:57:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:57:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:57:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:57:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:57:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:57:23,049 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:57:23,162 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:57:23,164 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:57:23,406 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:57:23,406 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:57:23,580 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:57:23,581 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:57:23,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:57:23 BoogieIcfgContainer [2024-06-03 19:57:23,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:57:23,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:57:23,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:57:23,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:57:23,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:57:20" (1/4) ... [2024-06-03 19:57:23,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4645f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:57:23, skipping insertion in model container [2024-06-03 19:57:23,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:57:22" (2/4) ... [2024-06-03 19:57:23,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4645f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:57:23, skipping insertion in model container [2024-06-03 19:57:23,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:57:22" (3/4) ... [2024-06-03 19:57:23,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4645f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:57:23, skipping insertion in model container [2024-06-03 19:57:23,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:57:23" (4/4) ... [2024-06-03 19:57:23,595 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-03 19:57:23,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:57:23,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:57:23,607 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:57:23,648 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:57:23,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:57:23,702 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-03 19:57:23,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:57:23,704 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. [2024-06-03 19:57:23,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 19:57:23,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-03 19:57:23,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:57:23,723 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;@4911d958, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:57:23,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:57:23,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:57:23,726 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:57:23,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:57:23,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:23,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:57:23,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:23,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1600259855, now seen corresponding path program 1 times [2024-06-03 19:57:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:23,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760084832] [2024-06-03 19:57:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:23,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760084832] [2024-06-03 19:57:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760084832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:24,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:24,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:57:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891366417] [2024-06-03 19:57:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:57:24,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:57:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:57:24,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 19:57:24,731 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) [2024-06-03 19:57:24,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:24,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 19:57:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:24,813 INFO L124 PetriNetUnfolderBase]: 162/317 cut-off events. [2024-06-03 19:57:24,813 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 19:57:24,815 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. [2024-06-03 19:57:24,817 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 19:57:24,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-03 19:57:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:57:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:57:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-03 19:57:24,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-03 19:57:24,827 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-03 19:57:24,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-03 19:57:24,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:24,830 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-03 19:57:24,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-03 19:57:24,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 19:57:24,834 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-03 19:57:24,834 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) [2024-06-03 19:57:24,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:24,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:57:24,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:24,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash 251680094, now seen corresponding path program 1 times [2024-06-03 19:57:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634324585] [2024-06-03 19:57:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:24,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634324585] [2024-06-03 19:57:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634324585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:57:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074034331] [2024-06-03 19:57:25,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:57:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:57:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:57:25,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:57:25,297 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) [2024-06-03 19:57:25,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:25,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:57:25,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:25,407 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-03 19:57:25,408 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-03 19:57:25,409 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. [2024-06-03 19:57:25,411 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 19:57:25,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-03 19:57:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:57:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:57:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-03 19:57:25,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-03 19:57:25,413 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-03 19:57:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-03 19:57:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:57:25,414 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-03 19:57:25,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-03 19:57:25,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-03 19:57:25,415 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-03 19:57:25,415 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) [2024-06-03 19:57:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:25,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:25,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:57:25,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:25,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash -795000808, now seen corresponding path program 1 times [2024-06-03 19:57:25,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:25,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883584683] [2024-06-03 19:57:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:25,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883584683] [2024-06-03 19:57:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883584683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:25,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:57:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478627900] [2024-06-03 19:57:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:57:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:57:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:57:25,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:57:25,877 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) [2024-06-03 19:57:25,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:25,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:57:25,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:25,960 INFO L124 PetriNetUnfolderBase]: 207/372 cut-off events. [2024-06-03 19:57:25,960 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-03 19:57:25,962 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. [2024-06-03 19:57:25,963 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-03 19:57:25,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 219 flow [2024-06-03 19:57:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:57:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:57:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-03 19:57:25,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-03 19:57:25,965 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 73 transitions. [2024-06-03 19:57:25,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 219 flow [2024-06-03 19:57:25,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:25,967 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-03 19:57:25,967 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} [2024-06-03 19:57:25,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-03 19:57:25,968 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-03 19:57:25,968 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) [2024-06-03 19:57:25,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:25,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:57:25,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:25,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 508425943, now seen corresponding path program 1 times [2024-06-03 19:57:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860867619] [2024-06-03 19:57:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:26,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:26,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860867619] [2024-06-03 19:57:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860867619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:26,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:26,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:57:26,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592208198] [2024-06-03 19:57:26,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:57:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:26,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:57:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:57:26,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 19:57:26,780 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) [2024-06-03 19:57:26,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:26,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 19:57:26,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:26,892 INFO L124 PetriNetUnfolderBase]: 203/364 cut-off events. [2024-06-03 19:57:26,892 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-06-03 19:57:26,893 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. [2024-06-03 19:57:26,894 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-03 19:57:26,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 233 flow [2024-06-03 19:57:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:57:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:57:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-03 19:57:26,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-03 19:57:26,896 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 80 transitions. [2024-06-03 19:57:26,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 233 flow [2024-06-03 19:57:26,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 218 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:26,898 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 118 flow [2024-06-03 19:57:26,898 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} [2024-06-03 19:57:26,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-03 19:57:26,899 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 118 flow [2024-06-03 19:57:26,899 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) [2024-06-03 19:57:26,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:26,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:26,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:57:26,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:26,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash 234560243, now seen corresponding path program 1 times [2024-06-03 19:57:26,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:26,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693375592] [2024-06-03 19:57:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:26,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:27,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:27,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693375592] [2024-06-03 19:57:27,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693375592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:27,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:27,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:57:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596380474] [2024-06-03 19:57:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:57:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:57:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:57:27,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-03 19:57:27,455 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) [2024-06-03 19:57:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-03 19:57:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:27,549 INFO L124 PetriNetUnfolderBase]: 147/295 cut-off events. [2024-06-03 19:57:27,549 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-03 19:57:27,550 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. [2024-06-03 19:57:27,551 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-03 19:57:27,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 200 flow [2024-06-03 19:57:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:57:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:57:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-03 19:57:27,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:57:27,552 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 118 flow. Second operand 5 states and 64 transitions. [2024-06-03 19:57:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 200 flow [2024-06-03 19:57:27,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 180 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:27,554 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 125 flow [2024-06-03 19:57:27,554 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} [2024-06-03 19:57:27,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-03 19:57:27,555 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 125 flow [2024-06-03 19:57:27,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:27,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:27,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:27,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:57:27,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:27,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1318565773, now seen corresponding path program 1 times [2024-06-03 19:57:27,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:27,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776556151] [2024-06-03 19:57:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:27,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776556151] [2024-06-03 19:57:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776556151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:28,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:28,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:57:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381565922] [2024-06-03 19:57:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:57:28,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:57:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:57:28,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:28,152 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) [2024-06-03 19:57:28,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:28,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:28,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:28,271 INFO L124 PetriNetUnfolderBase]: 203/366 cut-off events. [2024-06-03 19:57:28,272 INFO L125 PetriNetUnfolderBase]: For 708/711 co-relation queries the response was YES. [2024-06-03 19:57:28,272 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. [2024-06-03 19:57:28,274 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 30 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2024-06-03 19:57:28,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 257 flow [2024-06-03 19:57:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:57:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:57:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-03 19:57:28,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:57:28,275 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 125 flow. Second operand 6 states and 69 transitions. [2024-06-03 19:57:28,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 257 flow [2024-06-03 19:57:28,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 246 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:28,277 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 182 flow [2024-06-03 19:57:28,277 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} [2024-06-03 19:57:28,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-03 19:57:28,278 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 182 flow [2024-06-03 19:57:28,278 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) [2024-06-03 19:57:28,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:28,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:57:28,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:28,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash -591469422, now seen corresponding path program 1 times [2024-06-03 19:57:28,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:28,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813114268] [2024-06-03 19:57:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:28,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:28,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813114268] [2024-06-03 19:57:28,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813114268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:28,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:28,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:57:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741339188] [2024-06-03 19:57:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:28,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:57:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:57:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:57:28,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:28,827 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) [2024-06-03 19:57:28,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:28,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:28,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:28,957 INFO L124 PetriNetUnfolderBase]: 210/378 cut-off events. [2024-06-03 19:57:28,957 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2024-06-03 19:57:28,958 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. [2024-06-03 19:57:28,959 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-03 19:57:28,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 340 flow [2024-06-03 19:57:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-03 19:57:28,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2024-06-03 19:57:28,960 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 182 flow. Second operand 7 states and 76 transitions. [2024-06-03 19:57:28,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 340 flow [2024-06-03 19:57:28,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 326 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:28,963 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 237 flow [2024-06-03 19:57:28,963 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} [2024-06-03 19:57:28,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-03 19:57:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 237 flow [2024-06-03 19:57:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:57:28,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:28,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:28,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:57:28,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash -183400814, now seen corresponding path program 2 times [2024-06-03 19:57:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232928942] [2024-06-03 19:57:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:28,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:29,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:29,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232928942] [2024-06-03 19:57:29,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232928942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:29,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:29,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:57:29,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302425210] [2024-06-03 19:57:29,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:29,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:57:29,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:29,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:57:29,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:57:29,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:29,534 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) [2024-06-03 19:57:29,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:29,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:29,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:29,683 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-03 19:57:29,683 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-06-03 19:57:29,684 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. [2024-06-03 19:57:29,685 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-03 19:57:29,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 378 flow [2024-06-03 19:57:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:57:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:57:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-03 19:57:29,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 19:57:29,687 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 237 flow. Second operand 6 states and 67 transitions. [2024-06-03 19:57:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 378 flow [2024-06-03 19:57:29,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 357 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:29,689 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 271 flow [2024-06-03 19:57:29,689 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} [2024-06-03 19:57:29,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-03 19:57:29,690 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 271 flow [2024-06-03 19:57:29,690 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) [2024-06-03 19:57:29,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:29,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:57:29,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:29,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2074127378, now seen corresponding path program 3 times [2024-06-03 19:57:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757978889] [2024-06-03 19:57:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757978889] [2024-06-03 19:57:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757978889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:30,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:57:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418004484] [2024-06-03 19:57:30,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:30,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:57:30,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:57:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:57:30,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:30,216 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) [2024-06-03 19:57:30,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:30,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:30,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:30,331 INFO L124 PetriNetUnfolderBase]: 208/376 cut-off events. [2024-06-03 19:57:30,331 INFO L125 PetriNetUnfolderBase]: For 1694/1697 co-relation queries the response was YES. [2024-06-03 19:57:30,332 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. [2024-06-03 19:57:30,334 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 16 changer transitions 0/50 dead transitions. [2024-06-03 19:57:30,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 383 flow [2024-06-03 19:57:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:57:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:57:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-03 19:57:30,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:57:30,335 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 271 flow. Second operand 6 states and 68 transitions. [2024-06-03 19:57:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 383 flow [2024-06-03 19:57:30,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 353 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:30,337 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 280 flow [2024-06-03 19:57:30,337 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} [2024-06-03 19:57:30,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-03 19:57:30,338 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 280 flow [2024-06-03 19:57:30,338 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) [2024-06-03 19:57:30,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:30,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:30,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:57:30,339 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:30,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2074135314, now seen corresponding path program 1 times [2024-06-03 19:57:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:30,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710508008] [2024-06-03 19:57:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:30,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:30,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:30,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710508008] [2024-06-03 19:57:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710508008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:30,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238768243] [2024-06-03 19:57:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:30,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:30,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:30,920 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) [2024-06-03 19:57:30,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:30,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:31,027 INFO L124 PetriNetUnfolderBase]: 209/378 cut-off events. [2024-06-03 19:57:31,028 INFO L125 PetriNetUnfolderBase]: For 1612/1615 co-relation queries the response was YES. [2024-06-03 19:57:31,028 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. [2024-06-03 19:57:31,030 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 33 selfloop transitions, 22 changer transitions 0/57 dead transitions. [2024-06-03 19:57:31,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 450 flow [2024-06-03 19:57:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:57:31,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-03 19:57:31,031 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 280 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:57:31,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 450 flow [2024-06-03 19:57:31,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 405 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:31,033 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 315 flow [2024-06-03 19:57:31,034 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} [2024-06-03 19:57:31,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-03 19:57:31,034 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 315 flow [2024-06-03 19:57:31,034 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) [2024-06-03 19:57:31,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:31,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:57:31,035 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:31,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1053655576, now seen corresponding path program 1 times [2024-06-03 19:57:31,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:31,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3960087] [2024-06-03 19:57:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3960087] [2024-06-03 19:57:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3960087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:31,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:31,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826998887] [2024-06-03 19:57:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:31,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:31,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:31,590 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) [2024-06-03 19:57:31,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:31,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:31,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:31,783 INFO L124 PetriNetUnfolderBase]: 215/387 cut-off events. [2024-06-03 19:57:31,784 INFO L125 PetriNetUnfolderBase]: For 1996/1996 co-relation queries the response was YES. [2024-06-03 19:57:31,784 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. [2024-06-03 19:57:31,786 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 51 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2024-06-03 19:57:31,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 501 flow [2024-06-03 19:57:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-03 19:57:31,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-03 19:57:31,787 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 315 flow. Second operand 7 states and 80 transitions. [2024-06-03 19:57:31,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 501 flow [2024-06-03 19:57:31,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 476 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:31,790 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 349 flow [2024-06-03 19:57:31,790 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} [2024-06-03 19:57:31,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-03 19:57:31,791 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 349 flow [2024-06-03 19:57:31,791 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) [2024-06-03 19:57:31,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:31,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:31,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:57:31,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:31,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 723507234, now seen corresponding path program 2 times [2024-06-03 19:57:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553206614] [2024-06-03 19:57:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:31,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:32,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553206614] [2024-06-03 19:57:32,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553206614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:32,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:32,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117491746] [2024-06-03 19:57:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:32,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:32,361 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) [2024-06-03 19:57:32,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:32,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:32,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:32,525 INFO L124 PetriNetUnfolderBase]: 226/405 cut-off events. [2024-06-03 19:57:32,525 INFO L125 PetriNetUnfolderBase]: For 2515/2515 co-relation queries the response was YES. [2024-06-03 19:57:32,526 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. [2024-06-03 19:57:32,527 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-03 19:57:32,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 571 flow [2024-06-03 19:57:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-03 19:57:32,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-03 19:57:32,529 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 349 flow. Second operand 7 states and 81 transitions. [2024-06-03 19:57:32,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 571 flow [2024-06-03 19:57:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 552 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:32,532 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 406 flow [2024-06-03 19:57:32,532 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} [2024-06-03 19:57:32,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-03 19:57:32,533 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 406 flow [2024-06-03 19:57:32,533 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) [2024-06-03 19:57:32,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:32,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:32,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:57:32,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:32,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash -126559622, now seen corresponding path program 3 times [2024-06-03 19:57:32,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:32,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762323492] [2024-06-03 19:57:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:33,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:33,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762323492] [2024-06-03 19:57:33,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762323492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275384473] [2024-06-03 19:57:33,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:33,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:33,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:33,148 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) [2024-06-03 19:57:33,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:33,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:33,288 INFO L124 PetriNetUnfolderBase]: 228/411 cut-off events. [2024-06-03 19:57:33,288 INFO L125 PetriNetUnfolderBase]: For 3139/3139 co-relation queries the response was YES. [2024-06-03 19:57:33,289 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. [2024-06-03 19:57:33,291 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 22 changer transitions 0/72 dead transitions. [2024-06-03 19:57:33,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 630 flow [2024-06-03 19:57:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-03 19:57:33,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-03 19:57:33,292 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 406 flow. Second operand 7 states and 83 transitions. [2024-06-03 19:57:33,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 630 flow [2024-06-03 19:57:33,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 609 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:33,296 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 475 flow [2024-06-03 19:57:33,297 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} [2024-06-03 19:57:33,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-03 19:57:33,297 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 475 flow [2024-06-03 19:57:33,297 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) [2024-06-03 19:57:33,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:33,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:33,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:57:33,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:33,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash -126313358, now seen corresponding path program 1 times [2024-06-03 19:57:33,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:33,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461442798] [2024-06-03 19:57:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:33,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:34,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461442798] [2024-06-03 19:57:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461442798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:34,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:34,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229920722] [2024-06-03 19:57:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:34,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:34,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:34,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:34,070 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) [2024-06-03 19:57:34,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:34,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:34,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:34,248 INFO L124 PetriNetUnfolderBase]: 229/412 cut-off events. [2024-06-03 19:57:34,248 INFO L125 PetriNetUnfolderBase]: For 3445/3451 co-relation queries the response was YES. [2024-06-03 19:57:34,249 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. [2024-06-03 19:57:34,251 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 26 changer transitions 0/76 dead transitions. [2024-06-03 19:57:34,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 699 flow [2024-06-03 19:57:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 19:57:34,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 19:57:34,252 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 475 flow. Second operand 8 states and 89 transitions. [2024-06-03 19:57:34,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 699 flow [2024-06-03 19:57:34,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 669 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:34,256 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 539 flow [2024-06-03 19:57:34,257 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} [2024-06-03 19:57:34,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-03 19:57:34,257 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 539 flow [2024-06-03 19:57:34,257 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) [2024-06-03 19:57:34,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:34,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:34,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:57:34,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:34,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1111024951, now seen corresponding path program 1 times [2024-06-03 19:57:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:34,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300549665] [2024-06-03 19:57:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:34,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300549665] [2024-06-03 19:57:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300549665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354223732] [2024-06-03 19:57:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:34,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:35,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:35,050 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) [2024-06-03 19:57:35,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:35,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:35,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:35,268 INFO L124 PetriNetUnfolderBase]: 227/408 cut-off events. [2024-06-03 19:57:35,269 INFO L125 PetriNetUnfolderBase]: For 3686/3686 co-relation queries the response was YES. [2024-06-03 19:57:35,270 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. [2024-06-03 19:57:35,272 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-06-03 19:57:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 733 flow [2024-06-03 19:57:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-03 19:57:35,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-03 19:57:35,273 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 539 flow. Second operand 7 states and 80 transitions. [2024-06-03 19:57:35,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 733 flow [2024-06-03 19:57:35,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 696 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:35,277 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 540 flow [2024-06-03 19:57:35,278 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} [2024-06-03 19:57:35,278 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-03 19:57:35,278 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 540 flow [2024-06-03 19:57:35,278 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) [2024-06-03 19:57:35,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:35,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:35,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:57:35,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:35,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash -824633674, now seen corresponding path program 1 times [2024-06-03 19:57:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279838489] [2024-06-03 19:57:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279838489] [2024-06-03 19:57:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279838489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:35,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:35,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741417933] [2024-06-03 19:57:35,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:35,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:35,866 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) [2024-06-03 19:57:35,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:35,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:35,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:36,047 INFO L124 PetriNetUnfolderBase]: 233/420 cut-off events. [2024-06-03 19:57:36,047 INFO L125 PetriNetUnfolderBase]: For 4365/4371 co-relation queries the response was YES. [2024-06-03 19:57:36,048 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. [2024-06-03 19:57:36,050 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-06-03 19:57:36,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 750 flow [2024-06-03 19:57:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:57:36,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-03 19:57:36,051 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 540 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:57:36,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 750 flow [2024-06-03 19:57:36,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 712 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:36,055 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 557 flow [2024-06-03 19:57:36,055 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} [2024-06-03 19:57:36,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-03 19:57:36,056 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 557 flow [2024-06-03 19:57:36,056 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) [2024-06-03 19:57:36,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:36,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:57:36,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:36,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1613217172, now seen corresponding path program 2 times [2024-06-03 19:57:36,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:36,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829991557] [2024-06-03 19:57:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:36,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:36,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829991557] [2024-06-03 19:57:36,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829991557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631511984] [2024-06-03 19:57:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:36,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:36,718 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) [2024-06-03 19:57:36,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:36,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:36,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:36,874 INFO L124 PetriNetUnfolderBase]: 239/430 cut-off events. [2024-06-03 19:57:36,875 INFO L125 PetriNetUnfolderBase]: For 4943/4943 co-relation queries the response was YES. [2024-06-03 19:57:36,876 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. [2024-06-03 19:57:36,878 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 34 changer transitions 0/86 dead transitions. [2024-06-03 19:57:36,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 848 flow [2024-06-03 19:57:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-03 19:57:36,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-03 19:57:36,879 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 557 flow. Second operand 8 states and 93 transitions. [2024-06-03 19:57:36,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 86 transitions, 848 flow [2024-06-03 19:57:36,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 807 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:36,884 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 634 flow [2024-06-03 19:57:36,885 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} [2024-06-03 19:57:36,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-03 19:57:36,885 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 634 flow [2024-06-03 19:57:36,885 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) [2024-06-03 19:57:36,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:36,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:36,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:57:36,886 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash 702602860, now seen corresponding path program 3 times [2024-06-03 19:57:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488714825] [2024-06-03 19:57:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488714825] [2024-06-03 19:57:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488714825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:37,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:37,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:37,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790736070] [2024-06-03 19:57:37,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:37,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:37,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:37,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:37,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:37,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:37,507 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) [2024-06-03 19:57:37,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:37,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:37,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:37,650 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-03 19:57:37,650 INFO L125 PetriNetUnfolderBase]: For 5393/5393 co-relation queries the response was YES. [2024-06-03 19:57:37,651 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. [2024-06-03 19:57:37,652 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 32 changer transitions 0/88 dead transitions. [2024-06-03 19:57:37,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 916 flow [2024-06-03 19:57:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 19:57:37,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:57:37,653 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 634 flow. Second operand 8 states and 92 transitions. [2024-06-03 19:57:37,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 916 flow [2024-06-03 19:57:37,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 839 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:37,659 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 651 flow [2024-06-03 19:57:37,659 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} [2024-06-03 19:57:37,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-03 19:57:37,659 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 651 flow [2024-06-03 19:57:37,659 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) [2024-06-03 19:57:37,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:37,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:37,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:57:37,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:37,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash 379244657, now seen corresponding path program 1 times [2024-06-03 19:57:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120957371] [2024-06-03 19:57:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:38,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120957371] [2024-06-03 19:57:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120957371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:38,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:38,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954327423] [2024-06-03 19:57:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:38,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:38,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:38,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:38,328 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) [2024-06-03 19:57:38,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:38,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:38,487 INFO L124 PetriNetUnfolderBase]: 243/436 cut-off events. [2024-06-03 19:57:38,487 INFO L125 PetriNetUnfolderBase]: For 5858/5864 co-relation queries the response was YES. [2024-06-03 19:57:38,488 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. [2024-06-03 19:57:38,490 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 24 changer transitions 0/86 dead transitions. [2024-06-03 19:57:38,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 894 flow [2024-06-03 19:57:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 19:57:38,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-03 19:57:38,491 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 651 flow. Second operand 8 states and 87 transitions. [2024-06-03 19:57:38,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 894 flow [2024-06-03 19:57:38,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 839 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:38,497 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 665 flow [2024-06-03 19:57:38,497 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} [2024-06-03 19:57:38,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-03 19:57:38,498 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 665 flow [2024-06-03 19:57:38,498 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) [2024-06-03 19:57:38,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:38,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:38,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:57:38,498 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:38,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash 378977747, now seen corresponding path program 2 times [2024-06-03 19:57:38,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:38,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982969182] [2024-06-03 19:57:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:38,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:39,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982969182] [2024-06-03 19:57:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982969182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:39,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:57:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442819826] [2024-06-03 19:57:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:57:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:57:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:57:39,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:39,135 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) [2024-06-03 19:57:39,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:39,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:39,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:39,271 INFO L124 PetriNetUnfolderBase]: 241/433 cut-off events. [2024-06-03 19:57:39,271 INFO L125 PetriNetUnfolderBase]: For 6266/6272 co-relation queries the response was YES. [2024-06-03 19:57:39,272 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. [2024-06-03 19:57:39,274 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2024-06-03 19:57:39,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 84 transitions, 850 flow [2024-06-03 19:57:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-03 19:57:39,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-03 19:57:39,275 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 665 flow. Second operand 7 states and 78 transitions. [2024-06-03 19:57:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 84 transitions, 850 flow [2024-06-03 19:57:39,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 796 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:39,282 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 660 flow [2024-06-03 19:57:39,282 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} [2024-06-03 19:57:39,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 19:57:39,282 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 660 flow [2024-06-03 19:57:39,283 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) [2024-06-03 19:57:39,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:39,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:39,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:57:39,283 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:39,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash 379254577, now seen corresponding path program 1 times [2024-06-03 19:57:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165324764] [2024-06-03 19:57:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:40,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165324764] [2024-06-03 19:57:40,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165324764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:40,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:40,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347505665] [2024-06-03 19:57:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:40,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:40,137 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) [2024-06-03 19:57:40,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:40,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:40,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:40,287 INFO L124 PetriNetUnfolderBase]: 242/435 cut-off events. [2024-06-03 19:57:40,287 INFO L125 PetriNetUnfolderBase]: For 6855/6861 co-relation queries the response was YES. [2024-06-03 19:57:40,288 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. [2024-06-03 19:57:40,290 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 30 changer transitions 0/90 dead transitions. [2024-06-03 19:57:40,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 925 flow [2024-06-03 19:57:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:57:40,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 19:57:40,292 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 660 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:57:40,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 925 flow [2024-06-03 19:57:40,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 869 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:40,301 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 700 flow [2024-06-03 19:57:40,301 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} [2024-06-03 19:57:40,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-03 19:57:40,301 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 700 flow [2024-06-03 19:57:40,302 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) [2024-06-03 19:57:40,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:40,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:57:40,302 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:40,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1648199973, now seen corresponding path program 1 times [2024-06-03 19:57:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165352525] [2024-06-03 19:57:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:40,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:41,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:41,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165352525] [2024-06-03 19:57:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165352525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902997987] [2024-06-03 19:57:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:41,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:41,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:41,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:41,269 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) [2024-06-03 19:57:41,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:41,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:41,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:41,577 INFO L124 PetriNetUnfolderBase]: 246/442 cut-off events. [2024-06-03 19:57:41,577 INFO L125 PetriNetUnfolderBase]: For 7382/7382 co-relation queries the response was YES. [2024-06-03 19:57:41,578 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. [2024-06-03 19:57:41,580 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 79 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-03 19:57:41,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 937 flow [2024-06-03 19:57:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-03 19:57:41,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-03 19:57:41,581 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 700 flow. Second operand 8 states and 86 transitions. [2024-06-03 19:57:41,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 937 flow [2024-06-03 19:57:41,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 863 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:41,590 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 672 flow [2024-06-03 19:57:41,591 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} [2024-06-03 19:57:41,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-03 19:57:41,591 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 672 flow [2024-06-03 19:57:41,591 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) [2024-06-03 19:57:41,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:41,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:41,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:57:41,592 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:41,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -16137679, now seen corresponding path program 1 times [2024-06-03 19:57:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:41,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310653736] [2024-06-03 19:57:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:42,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310653736] [2024-06-03 19:57:42,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310653736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:42,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:42,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738122590] [2024-06-03 19:57:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:42,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:42,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:42,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:42,332 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) [2024-06-03 19:57:42,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:42,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:42,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:42,514 INFO L124 PetriNetUnfolderBase]: 244/440 cut-off events. [2024-06-03 19:57:42,515 INFO L125 PetriNetUnfolderBase]: For 7662/7668 co-relation queries the response was YES. [2024-06-03 19:57:42,516 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. [2024-06-03 19:57:42,518 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 71 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-03 19:57:42,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 887 flow [2024-06-03 19:57:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:57:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:57:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:57:42,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-03 19:57:42,519 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 672 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:57:42,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 887 flow [2024-06-03 19:57:42,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 847 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:42,527 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 678 flow [2024-06-03 19:57:42,527 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} [2024-06-03 19:57:42,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-03 19:57:42,528 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 678 flow [2024-06-03 19:57:42,528 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) [2024-06-03 19:57:42,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:42,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:42,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:57:42,529 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:42,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1648139523, now seen corresponding path program 2 times [2024-06-03 19:57:42,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:42,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630618063] [2024-06-03 19:57:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:43,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630618063] [2024-06-03 19:57:43,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630618063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:43,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:43,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:43,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4996468] [2024-06-03 19:57:43,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:43,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:43,360 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) [2024-06-03 19:57:43,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:43,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:43,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:43,598 INFO L124 PetriNetUnfolderBase]: 248/447 cut-off events. [2024-06-03 19:57:43,598 INFO L125 PetriNetUnfolderBase]: For 8625/8625 co-relation queries the response was YES. [2024-06-03 19:57:43,599 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. [2024-06-03 19:57:43,601 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 77 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-06-03 19:57:43,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 921 flow [2024-06-03 19:57:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:57:43,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:57:43,602 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 678 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:57:43,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 921 flow [2024-06-03 19:57:43,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 851 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:43,610 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 663 flow [2024-06-03 19:57:43,610 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} [2024-06-03 19:57:43,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-03 19:57:43,610 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 663 flow [2024-06-03 19:57:43,611 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) [2024-06-03 19:57:43,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:43,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:43,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:57:43,611 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:43,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash -609442249, now seen corresponding path program 1 times [2024-06-03 19:57:43,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:43,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082067463] [2024-06-03 19:57:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:44,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082067463] [2024-06-03 19:57:44,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082067463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:44,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980251915] [2024-06-03 19:57:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:44,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:44,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:44,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:44,210 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) [2024-06-03 19:57:44,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:44,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:44,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:44,382 INFO L124 PetriNetUnfolderBase]: 254/459 cut-off events. [2024-06-03 19:57:44,382 INFO L125 PetriNetUnfolderBase]: For 8779/8785 co-relation queries the response was YES. [2024-06-03 19:57:44,383 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. [2024-06-03 19:57:44,385 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-03 19:57:44,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 908 flow [2024-06-03 19:57:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:57:44,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:57:44,387 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 663 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:57:44,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 908 flow [2024-06-03 19:57:44,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 865 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:44,399 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 679 flow [2024-06-03 19:57:44,399 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} [2024-06-03 19:57:44,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-03 19:57:44,400 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 679 flow [2024-06-03 19:57:44,400 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) [2024-06-03 19:57:44,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:44,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:44,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:57:44,401 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:44,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1529867393, now seen corresponding path program 2 times [2024-06-03 19:57:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910004071] [2024-06-03 19:57:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:44,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:44,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910004071] [2024-06-03 19:57:44,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910004071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:44,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:44,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874434838] [2024-06-03 19:57:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:45,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:45,035 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) [2024-06-03 19:57:45,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:45,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:45,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:45,190 INFO L124 PetriNetUnfolderBase]: 270/485 cut-off events. [2024-06-03 19:57:45,191 INFO L125 PetriNetUnfolderBase]: For 9970/9970 co-relation queries the response was YES. [2024-06-03 19:57:45,192 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. [2024-06-03 19:57:45,194 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 44 changer transitions 0/103 dead transitions. [2024-06-03 19:57:45,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 1063 flow [2024-06-03 19:57:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:57:45,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:57:45,196 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 679 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:57:45,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 1063 flow [2024-06-03 19:57:45,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 1020 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:45,206 INFO L231 Difference]: Finished difference. Result has 101 places, 90 transitions, 787 flow [2024-06-03 19:57:45,206 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} [2024-06-03 19:57:45,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-03 19:57:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 90 transitions, 787 flow [2024-06-03 19:57:45,206 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) [2024-06-03 19:57:45,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:45,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:45,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:57:45,207 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:45,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1529873903, now seen corresponding path program 3 times [2024-06-03 19:57:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:45,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55873959] [2024-06-03 19:57:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55873959] [2024-06-03 19:57:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55873959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:45,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:45,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:45,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096565462] [2024-06-03 19:57:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:45,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:45,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:45,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:45,807 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) [2024-06-03 19:57:45,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:45,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:45,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:45,980 INFO L124 PetriNetUnfolderBase]: 276/495 cut-off events. [2024-06-03 19:57:45,980 INFO L125 PetriNetUnfolderBase]: For 10919/10919 co-relation queries the response was YES. [2024-06-03 19:57:45,982 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. [2024-06-03 19:57:45,991 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 60 selfloop transitions, 43 changer transitions 0/105 dead transitions. [2024-06-03 19:57:45,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 1147 flow [2024-06-03 19:57:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:57:45,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:57:45,993 INFO L175 Difference]: Start difference. First operand has 101 places, 90 transitions, 787 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:57:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 1147 flow [2024-06-03 19:57:46,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1097 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-03 19:57:46,006 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 850 flow [2024-06-03 19:57:46,006 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} [2024-06-03 19:57:46,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-03 19:57:46,006 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 850 flow [2024-06-03 19:57:46,007 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) [2024-06-03 19:57:46,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:46,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:57:46,007 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:46,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash -77449981, now seen corresponding path program 3 times [2024-06-03 19:57:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682979880] [2024-06-03 19:57:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682979880] [2024-06-03 19:57:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682979880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531347633] [2024-06-03 19:57:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:46,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:46,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:46,766 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) [2024-06-03 19:57:46,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:46,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:46,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:46,959 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-03 19:57:46,968 INFO L125 PetriNetUnfolderBase]: For 11861/11861 co-relation queries the response was YES. [2024-06-03 19:57:46,969 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. [2024-06-03 19:57:46,971 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 83 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-03 19:57:46,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1113 flow [2024-06-03 19:57:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:57:46,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:57:46,972 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 850 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:57:46,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1113 flow [2024-06-03 19:57:46,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 1040 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:46,983 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 841 flow [2024-06-03 19:57:46,983 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} [2024-06-03 19:57:46,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-03 19:57:46,984 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 841 flow [2024-06-03 19:57:46,984 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) [2024-06-03 19:57:46,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:46,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:57:46,985 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:46,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash -494151079, now seen corresponding path program 4 times [2024-06-03 19:57:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69913296] [2024-06-03 19:57:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:46,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:47,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69913296] [2024-06-03 19:57:47,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69913296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:47,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:47,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:47,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524556320] [2024-06-03 19:57:47,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:47,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:47,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:47,534 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) [2024-06-03 19:57:47,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:47,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:47,674 INFO L124 PetriNetUnfolderBase]: 281/505 cut-off events. [2024-06-03 19:57:47,675 INFO L125 PetriNetUnfolderBase]: For 12455/12455 co-relation queries the response was YES. [2024-06-03 19:57:47,676 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. [2024-06-03 19:57:47,678 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 42 changer transitions 0/108 dead transitions. [2024-06-03 19:57:47,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1213 flow [2024-06-03 19:57:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-03 19:57:47,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-03 19:57:47,679 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 841 flow. Second operand 8 states and 95 transitions. [2024-06-03 19:57:47,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1213 flow [2024-06-03 19:57:47,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1159 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:47,691 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 896 flow [2024-06-03 19:57:47,691 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} [2024-06-03 19:57:47,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-03 19:57:47,692 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 896 flow [2024-06-03 19:57:47,692 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) [2024-06-03 19:57:47,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:47,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:47,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:57:47,693 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:47,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:47,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1136597141, now seen corresponding path program 5 times [2024-06-03 19:57:47,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084147261] [2024-06-03 19:57:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:48,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:48,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084147261] [2024-06-03 19:57:48,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084147261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:48,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:48,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:48,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20829009] [2024-06-03 19:57:48,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:48,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:48,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:48,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:48,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:48,291 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) [2024-06-03 19:57:48,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:48,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:48,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:48,471 INFO L124 PetriNetUnfolderBase]: 287/515 cut-off events. [2024-06-03 19:57:48,473 INFO L125 PetriNetUnfolderBase]: For 13390/13390 co-relation queries the response was YES. [2024-06-03 19:57:48,474 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. [2024-06-03 19:57:48,476 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 43 changer transitions 0/109 dead transitions. [2024-06-03 19:57:48,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1276 flow [2024-06-03 19:57:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 19:57:48,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:57:48,477 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 896 flow. Second operand 8 states and 96 transitions. [2024-06-03 19:57:48,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1276 flow [2024-06-03 19:57:48,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 109 transitions, 1220 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:48,490 INFO L231 Difference]: Finished difference. Result has 115 places, 97 transitions, 957 flow [2024-06-03 19:57:48,490 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} [2024-06-03 19:57:48,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-03 19:57:48,491 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 97 transitions, 957 flow [2024-06-03 19:57:48,491 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) [2024-06-03 19:57:48,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:48,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:48,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:57:48,491 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:48,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1136590383, now seen corresponding path program 1 times [2024-06-03 19:57:48,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:48,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527962126] [2024-06-03 19:57:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527962126] [2024-06-03 19:57:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527962126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752054365] [2024-06-03 19:57:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:49,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:49,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:49,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:49,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:49,076 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) [2024-06-03 19:57:49,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:49,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:49,197 INFO L124 PetriNetUnfolderBase]: 290/519 cut-off events. [2024-06-03 19:57:49,197 INFO L125 PetriNetUnfolderBase]: For 14074/14080 co-relation queries the response was YES. [2024-06-03 19:57:49,199 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. [2024-06-03 19:57:49,200 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-03 19:57:49,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 1264 flow [2024-06-03 19:57:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 19:57:49,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 19:57:49,202 INFO L175 Difference]: Start difference. First operand has 115 places, 97 transitions, 957 flow. Second operand 8 states and 89 transitions. [2024-06-03 19:57:49,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 1264 flow [2024-06-03 19:57:49,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 1130 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:49,217 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 896 flow [2024-06-03 19:57:49,217 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} [2024-06-03 19:57:49,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-03 19:57:49,217 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 896 flow [2024-06-03 19:57:49,217 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) [2024-06-03 19:57:49,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:49,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:49,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:57:49,218 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:49,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1617259939, now seen corresponding path program 6 times [2024-06-03 19:57:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079898825] [2024-06-03 19:57:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079898825] [2024-06-03 19:57:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079898825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:57:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347093849] [2024-06-03 19:57:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:49,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:57:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:57:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:57:49,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:49,805 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) [2024-06-03 19:57:49,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:49,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:49,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:49,946 INFO L124 PetriNetUnfolderBase]: 296/530 cut-off events. [2024-06-03 19:57:49,946 INFO L125 PetriNetUnfolderBase]: For 15111/15111 co-relation queries the response was YES. [2024-06-03 19:57:49,947 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. [2024-06-03 19:57:49,949 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 44 changer transitions 0/114 dead transitions. [2024-06-03 19:57:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1290 flow [2024-06-03 19:57:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:57:49,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-03 19:57:49,950 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 896 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:57:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1290 flow [2024-06-03 19:57:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 1224 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:49,965 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 941 flow [2024-06-03 19:57:49,965 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} [2024-06-03 19:57:49,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-03 19:57:49,965 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 941 flow [2024-06-03 19:57:49,966 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) [2024-06-03 19:57:49,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:49,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:57:49,966 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:49,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:49,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1364676231, now seen corresponding path program 4 times [2024-06-03 19:57:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111082149] [2024-06-03 19:57:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:50,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111082149] [2024-06-03 19:57:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111082149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:50,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:50,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:50,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078313684] [2024-06-03 19:57:50,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:50,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:50,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:50,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:50,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:50,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:50,789 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) [2024-06-03 19:57:50,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:50,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:50,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:50,971 INFO L124 PetriNetUnfolderBase]: 297/533 cut-off events. [2024-06-03 19:57:50,971 INFO L125 PetriNetUnfolderBase]: For 16176/16176 co-relation queries the response was YES. [2024-06-03 19:57:50,973 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. [2024-06-03 19:57:50,974 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-06-03 19:57:50,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 112 transitions, 1193 flow [2024-06-03 19:57:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-03 19:57:50,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-03 19:57:50,976 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 941 flow. Second operand 8 states and 91 transitions. [2024-06-03 19:57:50,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 112 transitions, 1193 flow [2024-06-03 19:57:50,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 1109 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:57:50,995 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 932 flow [2024-06-03 19:57:50,995 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} [2024-06-03 19:57:50,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-03 19:57:50,996 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 932 flow [2024-06-03 19:57:50,996 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) [2024-06-03 19:57:50,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:50,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:50,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:57:50,996 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:50,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:50,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1128019503, now seen corresponding path program 2 times [2024-06-03 19:57:50,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:50,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564294238] [2024-06-03 19:57:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:50,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:51,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:51,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564294238] [2024-06-03 19:57:51,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564294238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:51,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:51,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:51,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623566705] [2024-06-03 19:57:51,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:51,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:51,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:51,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:51,550 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) [2024-06-03 19:57:51,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:51,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:51,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:51,694 INFO L124 PetriNetUnfolderBase]: 300/537 cut-off events. [2024-06-03 19:57:51,694 INFO L125 PetriNetUnfolderBase]: For 15659/15665 co-relation queries the response was YES. [2024-06-03 19:57:51,696 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. [2024-06-03 19:57:51,698 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 81 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-06-03 19:57:51,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 114 transitions, 1259 flow [2024-06-03 19:57:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:57:51,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:57:51,699 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 932 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:57:51,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 114 transitions, 1259 flow [2024-06-03 19:57:51,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 114 transitions, 1168 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:51,719 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 922 flow [2024-06-03 19:57:51,720 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} [2024-06-03 19:57:51,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-03 19:57:51,720 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 922 flow [2024-06-03 19:57:51,720 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) [2024-06-03 19:57:51,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:51,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:51,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:57:51,721 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:51,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1128316173, now seen corresponding path program 3 times [2024-06-03 19:57:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195368010] [2024-06-03 19:57:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:52,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:52,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195368010] [2024-06-03 19:57:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195368010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:52,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702931518] [2024-06-03 19:57:52,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:52,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:52,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:52,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:52,340 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) [2024-06-03 19:57:52,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:52,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:52,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:52,549 INFO L124 PetriNetUnfolderBase]: 298/534 cut-off events. [2024-06-03 19:57:52,549 INFO L125 PetriNetUnfolderBase]: For 15847/15853 co-relation queries the response was YES. [2024-06-03 19:57:52,551 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. [2024-06-03 19:57:52,552 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-06-03 19:57:52,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 113 transitions, 1169 flow [2024-06-03 19:57:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:57:52,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:57:52,553 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 922 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:57:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 113 transitions, 1169 flow [2024-06-03 19:57:52,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 113 transitions, 1106 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 19:57:52,572 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 926 flow [2024-06-03 19:57:52,572 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} [2024-06-03 19:57:52,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-03 19:57:52,572 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 926 flow [2024-06-03 19:57:52,572 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) [2024-06-03 19:57:52,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:52,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:52,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:57:52,572 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:52,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1128316421, now seen corresponding path program 7 times [2024-06-03 19:57:52,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:52,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356592919] [2024-06-03 19:57:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:52,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356592919] [2024-06-03 19:57:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356592919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811515310] [2024-06-03 19:57:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:53,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:53,226 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) [2024-06-03 19:57:53,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:53,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:53,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:53,412 INFO L124 PetriNetUnfolderBase]: 294/529 cut-off events. [2024-06-03 19:57:53,413 INFO L125 PetriNetUnfolderBase]: For 16183/16183 co-relation queries the response was YES. [2024-06-03 19:57:53,414 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. [2024-06-03 19:57:53,415 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 63 selfloop transitions, 52 changer transitions 0/117 dead transitions. [2024-06-03 19:57:53,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 1258 flow [2024-06-03 19:57:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:57:53,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 19:57:53,417 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 926 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:57:53,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 1258 flow [2024-06-03 19:57:53,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 117 transitions, 1157 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-03 19:57:53,435 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 934 flow [2024-06-03 19:57:53,435 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} [2024-06-03 19:57:53,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-03 19:57:53,435 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 934 flow [2024-06-03 19:57:53,435 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) [2024-06-03 19:57:53,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:53,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:53,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:57:53,436 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:53,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:53,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1128008591, now seen corresponding path program 1 times [2024-06-03 19:57:53,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:53,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320572632] [2024-06-03 19:57:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:53,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320572632] [2024-06-03 19:57:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320572632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:54,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:57:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474522780] [2024-06-03 19:57:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:54,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:57:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:57:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:57:54,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:54,256 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) [2024-06-03 19:57:54,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:54,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:54,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:54,514 INFO L124 PetriNetUnfolderBase]: 332/611 cut-off events. [2024-06-03 19:57:54,514 INFO L125 PetriNetUnfolderBase]: For 25181/25181 co-relation queries the response was YES. [2024-06-03 19:57:54,516 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. [2024-06-03 19:57:54,518 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 69 selfloop transitions, 62 changer transitions 0/133 dead transitions. [2024-06-03 19:57:54,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 1530 flow [2024-06-03 19:57:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:57:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:57:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:57:54,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:57:54,519 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 934 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:57:54,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 1530 flow [2024-06-03 19:57:54,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 133 transitions, 1406 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:57:54,540 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 1032 flow [2024-06-03 19:57:54,540 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} [2024-06-03 19:57:54,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-03 19:57:54,541 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 1032 flow [2024-06-03 19:57:54,541 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) [2024-06-03 19:57:54,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:54,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:54,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:57:54,541 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:54,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1404531653, now seen corresponding path program 1 times [2024-06-03 19:57:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:54,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666445145] [2024-06-03 19:57:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:55,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666445145] [2024-06-03 19:57:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666445145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:55,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191798415] [2024-06-03 19:57:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:55,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:55,273 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) [2024-06-03 19:57:55,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:55,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:55,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:55,493 INFO L124 PetriNetUnfolderBase]: 353/653 cut-off events. [2024-06-03 19:57:55,494 INFO L125 PetriNetUnfolderBase]: For 19189/19195 co-relation queries the response was YES. [2024-06-03 19:57:55,496 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. [2024-06-03 19:57:55,497 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 114 selfloop transitions, 19 changer transitions 0/135 dead transitions. [2024-06-03 19:57:55,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1403 flow [2024-06-03 19:57:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:57:55,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:57:55,499 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 1032 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:57:55,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1403 flow [2024-06-03 19:57:55,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1313 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:55,523 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1070 flow [2024-06-03 19:57:55,524 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} [2024-06-03 19:57:55,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-03 19:57:55,524 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1070 flow [2024-06-03 19:57:55,524 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) [2024-06-03 19:57:55,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:55,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:55,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:57:55,525 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:55,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash 587760625, now seen corresponding path program 2 times [2024-06-03 19:57:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823717498] [2024-06-03 19:57:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:55,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823717498] [2024-06-03 19:57:56,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823717498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:56,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:56,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916612975] [2024-06-03 19:57:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:56,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:56,334 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) [2024-06-03 19:57:56,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:56,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:56,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:56,523 INFO L124 PetriNetUnfolderBase]: 370/687 cut-off events. [2024-06-03 19:57:56,523 INFO L125 PetriNetUnfolderBase]: For 20057/20063 co-relation queries the response was YES. [2024-06-03 19:57:56,526 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. [2024-06-03 19:57:56,528 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 115 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-03 19:57:56,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 141 transitions, 1444 flow [2024-06-03 19:57:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:57:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:57:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:57:56,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:57:56,547 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1070 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:57:56,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 141 transitions, 1444 flow [2024-06-03 19:57:56,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 1421 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-03 19:57:56,579 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1183 flow [2024-06-03 19:57:56,579 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} [2024-06-03 19:57:56,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-03 19:57:56,580 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1183 flow [2024-06-03 19:57:56,580 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) [2024-06-03 19:57:56,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:56,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:56,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:57:56,581 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:56,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1744823887, now seen corresponding path program 3 times [2024-06-03 19:57:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:56,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868833844] [2024-06-03 19:57:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:56,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:57,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868833844] [2024-06-03 19:57:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868833844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:57,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:57,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824528764] [2024-06-03 19:57:57,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:57,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:57,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:57,266 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) [2024-06-03 19:57:57,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:57,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:57,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:57,464 INFO L124 PetriNetUnfolderBase]: 374/695 cut-off events. [2024-06-03 19:57:57,465 INFO L125 PetriNetUnfolderBase]: For 21478/21484 co-relation queries the response was YES. [2024-06-03 19:57:57,467 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. [2024-06-03 19:57:57,492 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 112 selfloop transitions, 25 changer transitions 0/139 dead transitions. [2024-06-03 19:57:57,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 139 transitions, 1497 flow [2024-06-03 19:57:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-03 19:57:57,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 19:57:57,494 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1183 flow. Second operand 8 states and 84 transitions. [2024-06-03 19:57:57,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 139 transitions, 1497 flow [2024-06-03 19:57:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1447 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:57,529 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1205 flow [2024-06-03 19:57:57,529 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} [2024-06-03 19:57:57,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-03 19:57:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1205 flow [2024-06-03 19:57:57,530 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) [2024-06-03 19:57:57,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:57,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:57,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:57:57,531 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:57,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1751916101, now seen corresponding path program 4 times [2024-06-03 19:57:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701982714] [2024-06-03 19:57:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:58,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:58,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701982714] [2024-06-03 19:57:58,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701982714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:58,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:58,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:58,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773642786] [2024-06-03 19:57:58,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:58,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:58,437 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) [2024-06-03 19:57:58,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:58,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:58,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:58,668 INFO L124 PetriNetUnfolderBase]: 385/716 cut-off events. [2024-06-03 19:57:58,668 INFO L125 PetriNetUnfolderBase]: For 23049/23055 co-relation queries the response was YES. [2024-06-03 19:57:58,671 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. [2024-06-03 19:57:58,672 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 115 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-03 19:57:58,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1617 flow [2024-06-03 19:57:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 19:57:58,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 19:57:58,700 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1205 flow. Second operand 8 states and 89 transitions. [2024-06-03 19:57:58,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1617 flow [2024-06-03 19:57:58,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 1557 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 19:57:58,739 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1227 flow [2024-06-03 19:57:58,739 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} [2024-06-03 19:57:58,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-03 19:57:58,740 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1227 flow [2024-06-03 19:57:58,740 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) [2024-06-03 19:57:58,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:58,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:58,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:57:58,740 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:58,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1751919821, now seen corresponding path program 5 times [2024-06-03 19:57:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730407121] [2024-06-03 19:57:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:57:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:57:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:57:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730407121] [2024-06-03 19:57:59,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730407121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:57:59,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:57:59,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:57:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582377534] [2024-06-03 19:57:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:57:59,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:57:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:57:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:57:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:57:59,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:57:59,396 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) [2024-06-03 19:57:59,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:57:59,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:57:59,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:57:59,597 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2024-06-03 19:57:59,598 INFO L125 PetriNetUnfolderBase]: For 21713/21719 co-relation queries the response was YES. [2024-06-03 19:57:59,600 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. [2024-06-03 19:57:59,602 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 114 selfloop transitions, 25 changer transitions 0/141 dead transitions. [2024-06-03 19:57:59,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 141 transitions, 1537 flow [2024-06-03 19:57:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:57:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:57:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 19:57:59,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-03 19:57:59,603 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1227 flow. Second operand 8 states and 87 transitions. [2024-06-03 19:57:59,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 141 transitions, 1537 flow [2024-06-03 19:57:59,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 141 transitions, 1491 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-03 19:57:59,639 INFO L231 Difference]: Finished difference. Result has 155 places, 129 transitions, 1236 flow [2024-06-03 19:57:59,639 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} [2024-06-03 19:57:59,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-03 19:57:59,641 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 129 transitions, 1236 flow [2024-06-03 19:57:59,641 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) [2024-06-03 19:57:59,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:57:59,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:57:59,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:57:59,641 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:57:59,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:57:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1751919976, now seen corresponding path program 1 times [2024-06-03 19:57:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:57:59,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359847236] [2024-06-03 19:57:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:57:59,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:57:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:00,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359847236] [2024-06-03 19:58:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359847236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:00,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036039802] [2024-06-03 19:58:00,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:00,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:00,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:00,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:00,321 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) [2024-06-03 19:58:00,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:00,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:00,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:00,542 INFO L124 PetriNetUnfolderBase]: 380/708 cut-off events. [2024-06-03 19:58:00,542 INFO L125 PetriNetUnfolderBase]: For 21188/21194 co-relation queries the response was YES. [2024-06-03 19:58:00,545 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. [2024-06-03 19:58:00,547 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 111 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-06-03 19:58:00,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1548 flow [2024-06-03 19:58:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:58:00,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 19:58:00,548 INFO L175 Difference]: Start difference. First operand has 155 places, 129 transitions, 1236 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:58:00,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1548 flow [2024-06-03 19:58:00,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 141 transitions, 1491 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:00,586 INFO L231 Difference]: Finished difference. Result has 156 places, 129 transitions, 1243 flow [2024-06-03 19:58:00,586 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} [2024-06-03 19:58:00,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-03 19:58:00,587 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 129 transitions, 1243 flow [2024-06-03 19:58:00,587 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) [2024-06-03 19:58:00,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:00,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:00,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:58:00,587 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:00,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1833543469, now seen corresponding path program 1 times [2024-06-03 19:58:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:00,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867242378] [2024-06-03 19:58:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867242378] [2024-06-03 19:58:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867242378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:01,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:01,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556020696] [2024-06-03 19:58:01,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:01,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:01,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:01,211 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) [2024-06-03 19:58:01,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:01,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:01,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:01,407 INFO L124 PetriNetUnfolderBase]: 386/719 cut-off events. [2024-06-03 19:58:01,407 INFO L125 PetriNetUnfolderBase]: For 22891/22897 co-relation queries the response was YES. [2024-06-03 19:58:01,410 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. [2024-06-03 19:58:01,412 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 25 changer transitions 1/145 dead transitions. [2024-06-03 19:58:01,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 145 transitions, 1586 flow [2024-06-03 19:58:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:58:01,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:58:01,413 INFO L175 Difference]: Start difference. First operand has 156 places, 129 transitions, 1243 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:58:01,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 145 transitions, 1586 flow [2024-06-03 19:58:01,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 145 transitions, 1470 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:01,456 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 1195 flow [2024-06-03 19:58:01,456 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} [2024-06-03 19:58:01,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-03 19:58:01,457 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 1195 flow [2024-06-03 19:58:01,457 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) [2024-06-03 19:58:01,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:01,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:01,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:58:01,457 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:01,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -181240139, now seen corresponding path program 2 times [2024-06-03 19:58:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726027750] [2024-06-03 19:58:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726027750] [2024-06-03 19:58:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726027750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653703408] [2024-06-03 19:58:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:02,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:02,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:02,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:02,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:02,087 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) [2024-06-03 19:58:02,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:02,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:02,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:02,258 INFO L124 PetriNetUnfolderBase]: 394/734 cut-off events. [2024-06-03 19:58:02,258 INFO L125 PetriNetUnfolderBase]: For 25627/25633 co-relation queries the response was YES. [2024-06-03 19:58:02,261 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. [2024-06-03 19:58:02,262 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 83 selfloop transitions, 66 changer transitions 1/152 dead transitions. [2024-06-03 19:58:02,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1776 flow [2024-06-03 19:58:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:58:02,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:58:02,264 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 1195 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:58:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1776 flow [2024-06-03 19:58:02,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1722 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:02,304 INFO L231 Difference]: Finished difference. Result has 158 places, 135 transitions, 1338 flow [2024-06-03 19:58:02,304 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} [2024-06-03 19:58:02,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-03 19:58:02,307 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 135 transitions, 1338 flow [2024-06-03 19:58:02,307 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) [2024-06-03 19:58:02,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:02,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:02,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:58:02,309 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:02,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1118166633, now seen corresponding path program 3 times [2024-06-03 19:58:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385258814] [2024-06-03 19:58:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:02,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:02,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385258814] [2024-06-03 19:58:02,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385258814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:02,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:02,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58817515] [2024-06-03 19:58:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:02,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:02,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:02,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:02,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:02,952 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) [2024-06-03 19:58:02,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:02,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:03,143 INFO L124 PetriNetUnfolderBase]: 396/740 cut-off events. [2024-06-03 19:58:03,143 INFO L125 PetriNetUnfolderBase]: For 25307/25313 co-relation queries the response was YES. [2024-06-03 19:58:03,146 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. [2024-06-03 19:58:03,147 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 87 selfloop transitions, 63 changer transitions 1/153 dead transitions. [2024-06-03 19:58:03,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 1889 flow [2024-06-03 19:58:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:58:03,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:58:03,149 INFO L175 Difference]: Start difference. First operand has 158 places, 135 transitions, 1338 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:58:03,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 1889 flow [2024-06-03 19:58:03,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 1817 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 19:58:03,198 INFO L231 Difference]: Finished difference. Result has 163 places, 136 transitions, 1412 flow [2024-06-03 19:58:03,198 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} [2024-06-03 19:58:03,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-03 19:58:03,199 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 136 transitions, 1412 flow [2024-06-03 19:58:03,199 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) [2024-06-03 19:58:03,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:03,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:03,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:58:03,200 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:03,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1117958871, now seen corresponding path program 6 times [2024-06-03 19:58:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575660605] [2024-06-03 19:58:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:04,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575660605] [2024-06-03 19:58:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575660605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:04,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103491418] [2024-06-03 19:58:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:04,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:04,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:04,067 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) [2024-06-03 19:58:04,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:04,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:04,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:04,285 INFO L124 PetriNetUnfolderBase]: 396/744 cut-off events. [2024-06-03 19:58:04,285 INFO L125 PetriNetUnfolderBase]: For 26686/26692 co-relation queries the response was YES. [2024-06-03 19:58:04,288 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. [2024-06-03 19:58:04,289 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2024-06-03 19:58:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 148 transitions, 1746 flow [2024-06-03 19:58:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-03 19:58:04,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-03 19:58:04,290 INFO L175 Difference]: Start difference. First operand has 163 places, 136 transitions, 1412 flow. Second operand 8 states and 91 transitions. [2024-06-03 19:58:04,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 148 transitions, 1746 flow [2024-06-03 19:58:04,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 148 transitions, 1634 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:04,342 INFO L231 Difference]: Finished difference. Result has 165 places, 137 transitions, 1398 flow [2024-06-03 19:58:04,342 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} [2024-06-03 19:58:04,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-03 19:58:04,342 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 137 transitions, 1398 flow [2024-06-03 19:58:04,343 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) [2024-06-03 19:58:04,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:04,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:04,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:58:04,343 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:04,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1117964823, now seen corresponding path program 4 times [2024-06-03 19:58:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:04,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537335503] [2024-06-03 19:58:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:04,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537335503] [2024-06-03 19:58:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537335503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:04,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:04,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577547565] [2024-06-03 19:58:04,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:04,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:04,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:05,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:05,044 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) [2024-06-03 19:58:05,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:05,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:05,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:05,262 INFO L124 PetriNetUnfolderBase]: 402/754 cut-off events. [2024-06-03 19:58:05,263 INFO L125 PetriNetUnfolderBase]: For 27849/27855 co-relation queries the response was YES. [2024-06-03 19:58:05,266 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. [2024-06-03 19:58:05,268 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 61 changer transitions 1/155 dead transitions. [2024-06-03 19:58:05,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 1964 flow [2024-06-03 19:58:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:58:05,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 19:58:05,269 INFO L175 Difference]: Start difference. First operand has 165 places, 137 transitions, 1398 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:58:05,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 1964 flow [2024-06-03 19:58:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 155 transitions, 1876 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:05,322 INFO L231 Difference]: Finished difference. Result has 168 places, 138 transitions, 1453 flow [2024-06-03 19:58:05,322 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} [2024-06-03 19:58:05,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-03 19:58:05,323 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 138 transitions, 1453 flow [2024-06-03 19:58:05,323 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) [2024-06-03 19:58:05,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:05,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:05,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:58:05,324 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:05,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1112452341, now seen corresponding path program 7 times [2024-06-03 19:58:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:05,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399865546] [2024-06-03 19:58:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:06,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399865546] [2024-06-03 19:58:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399865546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:06,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:06,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:58:06,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790530156] [2024-06-03 19:58:06,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:06,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:58:06,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:58:06,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:58:06,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:06,062 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) [2024-06-03 19:58:06,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:06,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:06,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:06,260 INFO L124 PetriNetUnfolderBase]: 402/758 cut-off events. [2024-06-03 19:58:06,260 INFO L125 PetriNetUnfolderBase]: For 29248/29254 co-relation queries the response was YES. [2024-06-03 19:58:06,263 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. [2024-06-03 19:58:06,265 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 112 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-06-03 19:58:06,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 150 transitions, 1793 flow [2024-06-03 19:58:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 19:58:06,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:58:06,266 INFO L175 Difference]: Start difference. First operand has 168 places, 138 transitions, 1453 flow. Second operand 8 states and 90 transitions. [2024-06-03 19:58:06,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 150 transitions, 1793 flow [2024-06-03 19:58:06,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 150 transitions, 1692 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:06,324 INFO L231 Difference]: Finished difference. Result has 170 places, 139 transitions, 1444 flow [2024-06-03 19:58:06,324 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} [2024-06-03 19:58:06,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-03 19:58:06,325 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 139 transitions, 1444 flow [2024-06-03 19:58:06,325 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) [2024-06-03 19:58:06,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:06,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:06,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:58:06,325 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -186965591, now seen corresponding path program 8 times [2024-06-03 19:58:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731264429] [2024-06-03 19:58:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731264429] [2024-06-03 19:58:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731264429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663267129] [2024-06-03 19:58:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:07,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:07,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:07,182 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) [2024-06-03 19:58:07,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:07,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:07,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:07,377 INFO L124 PetriNetUnfolderBase]: 399/753 cut-off events. [2024-06-03 19:58:07,377 INFO L125 PetriNetUnfolderBase]: For 28265/28271 co-relation queries the response was YES. [2024-06-03 19:58:07,380 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. [2024-06-03 19:58:07,382 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 109 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2024-06-03 19:58:07,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 150 transitions, 1768 flow [2024-06-03 19:58:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:58:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:58:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 19:58:07,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 19:58:07,383 INFO L175 Difference]: Start difference. First operand has 170 places, 139 transitions, 1444 flow. Second operand 8 states and 90 transitions. [2024-06-03 19:58:07,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 150 transitions, 1768 flow [2024-06-03 19:58:07,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 150 transitions, 1686 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:07,443 INFO L231 Difference]: Finished difference. Result has 172 places, 139 transitions, 1445 flow [2024-06-03 19:58:07,443 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} [2024-06-03 19:58:07,443 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-03 19:58:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 139 transitions, 1445 flow [2024-06-03 19:58:07,444 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) [2024-06-03 19:58:07,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:07,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:07,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:58:07,445 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:07,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash -186811769, now seen corresponding path program 5 times [2024-06-03 19:58:07,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:07,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689976478] [2024-06-03 19:58:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:07,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:08,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:08,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689976478] [2024-06-03 19:58:08,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689976478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:08,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:08,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333455061] [2024-06-03 19:58:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:08,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:08,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:08,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:08,121 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) [2024-06-03 19:58:08,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:08,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:08,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:08,336 INFO L124 PetriNetUnfolderBase]: 408/766 cut-off events. [2024-06-03 19:58:08,337 INFO L125 PetriNetUnfolderBase]: For 30538/30544 co-relation queries the response was YES. [2024-06-03 19:58:08,342 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. [2024-06-03 19:58:08,344 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 64 changer transitions 1/159 dead transitions. [2024-06-03 19:58:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 159 transitions, 2058 flow [2024-06-03 19:58:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:58:08,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:08,346 INFO L175 Difference]: Start difference. First operand has 172 places, 139 transitions, 1445 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:58:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 159 transitions, 2058 flow [2024-06-03 19:58:08,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 159 transitions, 1957 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:08,404 INFO L231 Difference]: Finished difference. Result has 175 places, 143 transitions, 1569 flow [2024-06-03 19:58:08,405 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} [2024-06-03 19:58:08,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-03 19:58:08,405 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 143 transitions, 1569 flow [2024-06-03 19:58:08,405 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) [2024-06-03 19:58:08,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:08,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:08,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:58:08,406 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:08,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash -874771655, now seen corresponding path program 6 times [2024-06-03 19:58:08,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:08,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724115303] [2024-06-03 19:58:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:08,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724115303] [2024-06-03 19:58:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724115303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134748359] [2024-06-03 19:58:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:09,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:09,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:09,052 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) [2024-06-03 19:58:09,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:09,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:09,275 INFO L124 PetriNetUnfolderBase]: 403/759 cut-off events. [2024-06-03 19:58:09,276 INFO L125 PetriNetUnfolderBase]: For 32074/32080 co-relation queries the response was YES. [2024-06-03 19:58:09,279 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. [2024-06-03 19:58:09,281 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 94 selfloop transitions, 65 changer transitions 0/161 dead transitions. [2024-06-03 19:58:09,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 161 transitions, 2246 flow [2024-06-03 19:58:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:58:09,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:58:09,282 INFO L175 Difference]: Start difference. First operand has 175 places, 143 transitions, 1569 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:58:09,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 161 transitions, 2246 flow [2024-06-03 19:58:09,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 161 transitions, 2131 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:09,340 INFO L231 Difference]: Finished difference. Result has 177 places, 145 transitions, 1616 flow [2024-06-03 19:58:09,340 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} [2024-06-03 19:58:09,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-03 19:58:09,341 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 145 transitions, 1616 flow [2024-06-03 19:58:09,341 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) [2024-06-03 19:58:09,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:09,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:09,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:58:09,342 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:09,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash -874562126, now seen corresponding path program 1 times [2024-06-03 19:58:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386548793] [2024-06-03 19:58:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386548793] [2024-06-03 19:58:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386548793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364215512] [2024-06-03 19:58:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:10,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:10,129 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) [2024-06-03 19:58:10,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:10,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:10,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:10,332 INFO L124 PetriNetUnfolderBase]: 406/764 cut-off events. [2024-06-03 19:58:10,332 INFO L125 PetriNetUnfolderBase]: For 32394/32400 co-relation queries the response was YES. [2024-06-03 19:58:10,335 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. [2024-06-03 19:58:10,337 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 31 changer transitions 0/155 dead transitions. [2024-06-03 19:58:10,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 155 transitions, 1969 flow [2024-06-03 19:58:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:58:10,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:58:10,338 INFO L175 Difference]: Start difference. First operand has 177 places, 145 transitions, 1616 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:58:10,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 155 transitions, 1969 flow [2024-06-03 19:58:10,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 155 transitions, 1797 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:10,396 INFO L231 Difference]: Finished difference. Result has 179 places, 147 transitions, 1544 flow [2024-06-03 19:58:10,396 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} [2024-06-03 19:58:10,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-03 19:58:10,397 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 147 transitions, 1544 flow [2024-06-03 19:58:10,397 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) [2024-06-03 19:58:10,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:10,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:10,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:58:10,397 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:10,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -608864846, now seen corresponding path program 2 times [2024-06-03 19:58:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749980377] [2024-06-03 19:58:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:11,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:11,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749980377] [2024-06-03 19:58:11,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749980377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:11,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:11,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819787599] [2024-06-03 19:58:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:11,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:11,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:11,268 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) [2024-06-03 19:58:11,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:11,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:11,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:11,487 INFO L124 PetriNetUnfolderBase]: 409/769 cut-off events. [2024-06-03 19:58:11,487 INFO L125 PetriNetUnfolderBase]: For 32935/32941 co-relation queries the response was YES. [2024-06-03 19:58:11,491 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. [2024-06-03 19:58:11,492 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 33 changer transitions 0/158 dead transitions. [2024-06-03 19:58:11,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 158 transitions, 1906 flow [2024-06-03 19:58:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 19:58:11,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-03 19:58:11,493 INFO L175 Difference]: Start difference. First operand has 179 places, 147 transitions, 1544 flow. Second operand 10 states and 104 transitions. [2024-06-03 19:58:11,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 158 transitions, 1906 flow [2024-06-03 19:58:11,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 158 transitions, 1833 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:11,564 INFO L231 Difference]: Finished difference. Result has 182 places, 149 transitions, 1576 flow [2024-06-03 19:58:11,564 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} [2024-06-03 19:58:11,564 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-03 19:58:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 149 transitions, 1576 flow [2024-06-03 19:58:11,569 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) [2024-06-03 19:58:11,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:11,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:58:11,570 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:11,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash -608865125, now seen corresponding path program 7 times [2024-06-03 19:58:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:11,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432751297] [2024-06-03 19:58:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432751297] [2024-06-03 19:58:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432751297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304866148] [2024-06-03 19:58:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:12,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:12,304 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) [2024-06-03 19:58:12,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:12,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:12,548 INFO L124 PetriNetUnfolderBase]: 438/817 cut-off events. [2024-06-03 19:58:12,548 INFO L125 PetriNetUnfolderBase]: For 42009/42015 co-relation queries the response was YES. [2024-06-03 19:58:12,551 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. [2024-06-03 19:58:12,553 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 81 changer transitions 0/174 dead transitions. [2024-06-03 19:58:12,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 174 transitions, 2370 flow [2024-06-03 19:58:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:58:12,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:58:12,554 INFO L175 Difference]: Start difference. First operand has 182 places, 149 transitions, 1576 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:58:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 174 transitions, 2370 flow [2024-06-03 19:58:12,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 174 transitions, 2289 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:12,633 INFO L231 Difference]: Finished difference. Result has 185 places, 156 transitions, 1773 flow [2024-06-03 19:58:12,633 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} [2024-06-03 19:58:12,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-03 19:58:12,634 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 156 transitions, 1773 flow [2024-06-03 19:58:12,634 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) [2024-06-03 19:58:12,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:12,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:12,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:58:12,634 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:12,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash -618061895, now seen corresponding path program 8 times [2024-06-03 19:58:12,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:12,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385463489] [2024-06-03 19:58:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:13,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385463489] [2024-06-03 19:58:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385463489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:13,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:13,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329750573] [2024-06-03 19:58:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:13,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:13,301 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) [2024-06-03 19:58:13,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:13,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:13,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:13,558 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2024-06-03 19:58:13,558 INFO L125 PetriNetUnfolderBase]: For 49691/49697 co-relation queries the response was YES. [2024-06-03 19:58:13,562 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. [2024-06-03 19:58:13,564 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 82 changer transitions 0/183 dead transitions. [2024-06-03 19:58:13,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 183 transitions, 2715 flow [2024-06-03 19:58:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 19:58:13,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 19:58:13,565 INFO L175 Difference]: Start difference. First operand has 185 places, 156 transitions, 1773 flow. Second operand 10 states and 127 transitions. [2024-06-03 19:58:13,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 183 transitions, 2715 flow [2024-06-03 19:58:13,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 183 transitions, 2571 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:13,641 INFO L231 Difference]: Finished difference. Result has 189 places, 163 transitions, 1905 flow [2024-06-03 19:58:13,642 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} [2024-06-03 19:58:13,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-03 19:58:13,642 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 163 transitions, 1905 flow [2024-06-03 19:58:13,642 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) [2024-06-03 19:58:13,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:13,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:13,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:58:13,643 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:13,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash -608538416, now seen corresponding path program 3 times [2024-06-03 19:58:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971537425] [2024-06-03 19:58:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:13,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:14,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:14,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971537425] [2024-06-03 19:58:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971537425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583007019] [2024-06-03 19:58:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:14,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:14,472 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) [2024-06-03 19:58:14,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:14,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:14,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:14,781 INFO L124 PetriNetUnfolderBase]: 468/866 cut-off events. [2024-06-03 19:58:14,781 INFO L125 PetriNetUnfolderBase]: For 46358/46364 co-relation queries the response was YES. [2024-06-03 19:58:14,784 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. [2024-06-03 19:58:14,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 98 selfloop transitions, 83 changer transitions 0/183 dead transitions. [2024-06-03 19:58:14,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 183 transitions, 2655 flow [2024-06-03 19:58:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:58:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:58:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:58:14,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:58:14,798 INFO L175 Difference]: Start difference. First operand has 189 places, 163 transitions, 1905 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:58:14,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 183 transitions, 2655 flow [2024-06-03 19:58:14,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 183 transitions, 2455 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:14,891 INFO L231 Difference]: Finished difference. Result has 192 places, 164 transitions, 1894 flow [2024-06-03 19:58:14,891 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} [2024-06-03 19:58:14,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-03 19:58:14,891 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 164 transitions, 1894 flow [2024-06-03 19:58:14,891 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) [2024-06-03 19:58:14,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:14,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:58:14,892 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:14,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash -618069335, now seen corresponding path program 9 times [2024-06-03 19:58:14,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:14,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414522806] [2024-06-03 19:58:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414522806] [2024-06-03 19:58:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414522806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:15,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110994123] [2024-06-03 19:58:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:15,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:15,603 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) [2024-06-03 19:58:15,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:15,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:15,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:15,828 INFO L124 PetriNetUnfolderBase]: 464/860 cut-off events. [2024-06-03 19:58:15,828 INFO L125 PetriNetUnfolderBase]: For 46204/46210 co-relation queries the response was YES. [2024-06-03 19:58:15,832 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. [2024-06-03 19:58:15,834 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 88 changer transitions 0/183 dead transitions. [2024-06-03 19:58:15,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 183 transitions, 2644 flow [2024-06-03 19:58:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:58:15,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 19:58:15,836 INFO L175 Difference]: Start difference. First operand has 192 places, 164 transitions, 1894 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:58:15,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 183 transitions, 2644 flow [2024-06-03 19:58:15,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 183 transitions, 2472 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:15,932 INFO L231 Difference]: Finished difference. Result has 195 places, 165 transitions, 1919 flow [2024-06-03 19:58:15,932 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} [2024-06-03 19:58:15,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-03 19:58:15,933 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 165 transitions, 1919 flow [2024-06-03 19:58:15,933 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) [2024-06-03 19:58:15,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:15,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:58:15,933 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:15,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -618061616, now seen corresponding path program 4 times [2024-06-03 19:58:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679025330] [2024-06-03 19:58:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:16,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:16,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679025330] [2024-06-03 19:58:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679025330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920756214] [2024-06-03 19:58:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:16,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:16,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:16,715 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) [2024-06-03 19:58:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:16,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:16,953 INFO L124 PetriNetUnfolderBase]: 460/853 cut-off events. [2024-06-03 19:58:16,953 INFO L125 PetriNetUnfolderBase]: For 44998/45004 co-relation queries the response was YES. [2024-06-03 19:58:16,957 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. [2024-06-03 19:58:16,959 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 33 changer transitions 0/175 dead transitions. [2024-06-03 19:58:16,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 175 transitions, 2302 flow [2024-06-03 19:58:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:58:16,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 19:58:16,960 INFO L175 Difference]: Start difference. First operand has 195 places, 165 transitions, 1919 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:58:16,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 175 transitions, 2302 flow [2024-06-03 19:58:17,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 175 transitions, 2136 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:17,066 INFO L231 Difference]: Finished difference. Result has 198 places, 166 transitions, 1843 flow [2024-06-03 19:58:17,067 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} [2024-06-03 19:58:17,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-03 19:58:17,067 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 166 transitions, 1843 flow [2024-06-03 19:58:17,067 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) [2024-06-03 19:58:17,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:17,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:58:17,068 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash -874562405, now seen corresponding path program 10 times [2024-06-03 19:58:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837433046] [2024-06-03 19:58:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:17,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:17,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837433046] [2024-06-03 19:58:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837433046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:17,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:17,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:17,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442947779] [2024-06-03 19:58:17,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:17,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:17,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:17,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:17,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:17,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:17,665 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) [2024-06-03 19:58:17,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:17,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:17,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:17,884 INFO L124 PetriNetUnfolderBase]: 462/857 cut-off events. [2024-06-03 19:58:17,884 INFO L125 PetriNetUnfolderBase]: For 47585/47591 co-relation queries the response was YES. [2024-06-03 19:58:17,892 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. [2024-06-03 19:58:17,895 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 78 changer transitions 0/184 dead transitions. [2024-06-03 19:58:17,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 184 transitions, 2616 flow [2024-06-03 19:58:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:58:17,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 19:58:17,896 INFO L175 Difference]: Start difference. First operand has 198 places, 166 transitions, 1843 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:58:17,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 184 transitions, 2616 flow [2024-06-03 19:58:18,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 184 transitions, 2533 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:18,003 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 1955 flow [2024-06-03 19:58:18,003 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} [2024-06-03 19:58:18,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-03 19:58:18,004 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 1955 flow [2024-06-03 19:58:18,004 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) [2024-06-03 19:58:18,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:18,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:18,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:58:18,005 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:18,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash -874569845, now seen corresponding path program 11 times [2024-06-03 19:58:18,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947767040] [2024-06-03 19:58:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:18,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:18,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947767040] [2024-06-03 19:58:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947767040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:18,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:18,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535208939] [2024-06-03 19:58:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:18,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:18,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:18,672 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) [2024-06-03 19:58:18,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:18,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:18,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:18,906 INFO L124 PetriNetUnfolderBase]: 458/851 cut-off events. [2024-06-03 19:58:18,906 INFO L125 PetriNetUnfolderBase]: For 43369/43375 co-relation queries the response was YES. [2024-06-03 19:58:18,910 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. [2024-06-03 19:58:18,912 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 78 changer transitions 0/184 dead transitions. [2024-06-03 19:58:18,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 184 transitions, 2705 flow [2024-06-03 19:58:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:58:18,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 19:58:18,917 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 1955 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:58:18,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 184 transitions, 2705 flow [2024-06-03 19:58:19,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 184 transitions, 2497 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:19,008 INFO L231 Difference]: Finished difference. Result has 201 places, 168 transitions, 1908 flow [2024-06-03 19:58:19,008 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} [2024-06-03 19:58:19,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 19:58:19,008 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 168 transitions, 1908 flow [2024-06-03 19:58:19,009 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) [2024-06-03 19:58:19,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:19,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:19,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:58:19,009 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:19,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1969992456, now seen corresponding path program 1 times [2024-06-03 19:58:19,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:19,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758211813] [2024-06-03 19:58:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758211813] [2024-06-03 19:58:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758211813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:19,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:19,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358926322] [2024-06-03 19:58:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:19,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:19,863 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) [2024-06-03 19:58:19,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:19,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:19,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:20,109 INFO L124 PetriNetUnfolderBase]: 462/859 cut-off events. [2024-06-03 19:58:20,109 INFO L125 PetriNetUnfolderBase]: For 44539/44545 co-relation queries the response was YES. [2024-06-03 19:58:20,113 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. [2024-06-03 19:58:20,116 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 155 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-03 19:58:20,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 183 transitions, 2310 flow [2024-06-03 19:58:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:58:20,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-03 19:58:20,117 INFO L175 Difference]: Start difference. First operand has 201 places, 168 transitions, 1908 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:58:20,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 183 transitions, 2310 flow [2024-06-03 19:58:20,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 183 transitions, 2132 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:20,204 INFO L231 Difference]: Finished difference. Result has 203 places, 169 transitions, 1798 flow [2024-06-03 19:58:20,205 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} [2024-06-03 19:58:20,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-03 19:58:20,205 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 169 transitions, 1798 flow [2024-06-03 19:58:20,205 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) [2024-06-03 19:58:20,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:20,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:20,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:58:20,206 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:20,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1686820428, now seen corresponding path program 1 times [2024-06-03 19:58:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068566594] [2024-06-03 19:58:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:20,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068566594] [2024-06-03 19:58:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068566594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974459098] [2024-06-03 19:58:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:20,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:20,962 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) [2024-06-03 19:58:20,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:20,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:20,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:21,159 INFO L124 PetriNetUnfolderBase]: 457/844 cut-off events. [2024-06-03 19:58:21,159 INFO L125 PetriNetUnfolderBase]: For 41933/41939 co-relation queries the response was YES. [2024-06-03 19:58:21,163 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. [2024-06-03 19:58:21,165 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 30 changer transitions 4/183 dead transitions. [2024-06-03 19:58:21,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 183 transitions, 2200 flow [2024-06-03 19:58:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:58:21,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:58:21,173 INFO L175 Difference]: Start difference. First operand has 203 places, 169 transitions, 1798 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:58:21,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 183 transitions, 2200 flow [2024-06-03 19:58:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 183 transitions, 2140 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:21,255 INFO L231 Difference]: Finished difference. Result has 205 places, 165 transitions, 1754 flow [2024-06-03 19:58:21,255 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} [2024-06-03 19:58:21,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-03 19:58:21,255 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 165 transitions, 1754 flow [2024-06-03 19:58:21,256 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) [2024-06-03 19:58:21,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:21,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:58:21,256 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:21,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1686820614, now seen corresponding path program 2 times [2024-06-03 19:58:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:21,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123719318] [2024-06-03 19:58:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:21,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:21,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123719318] [2024-06-03 19:58:21,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123719318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:21,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:21,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:21,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533251650] [2024-06-03 19:58:21,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:22,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:22,046 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) [2024-06-03 19:58:22,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:22,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:22,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:22,307 INFO L124 PetriNetUnfolderBase]: 444/817 cut-off events. [2024-06-03 19:58:22,307 INFO L125 PetriNetUnfolderBase]: For 45092/45098 co-relation queries the response was YES. [2024-06-03 19:58:22,311 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. [2024-06-03 19:58:22,314 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-03 19:58:22,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 180 transitions, 2158 flow [2024-06-03 19:58:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:58:22,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:58:22,324 INFO L175 Difference]: Start difference. First operand has 205 places, 165 transitions, 1754 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:58:22,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 180 transitions, 2158 flow [2024-06-03 19:58:22,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 180 transitions, 1967 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-03 19:58:22,412 INFO L231 Difference]: Finished difference. Result has 201 places, 166 transitions, 1638 flow [2024-06-03 19:58:22,412 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} [2024-06-03 19:58:22,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 19:58:22,413 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 166 transitions, 1638 flow [2024-06-03 19:58:22,413 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) [2024-06-03 19:58:22,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:22,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:22,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:58:22,413 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:22,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1525059080, now seen corresponding path program 3 times [2024-06-03 19:58:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:22,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208366391] [2024-06-03 19:58:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:22,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208366391] [2024-06-03 19:58:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208366391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:23,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179003102] [2024-06-03 19:58:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:23,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:23,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:23,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:23,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:23,232 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) [2024-06-03 19:58:23,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:23,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:23,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:23,438 INFO L124 PetriNetUnfolderBase]: 448/825 cut-off events. [2024-06-03 19:58:23,438 INFO L125 PetriNetUnfolderBase]: For 43572/43578 co-relation queries the response was YES. [2024-06-03 19:58:23,442 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. [2024-06-03 19:58:23,444 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-06-03 19:58:23,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 181 transitions, 2044 flow [2024-06-03 19:58:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:58:23,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 19:58:23,444 INFO L175 Difference]: Start difference. First operand has 201 places, 166 transitions, 1638 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:58:23,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 181 transitions, 2044 flow [2024-06-03 19:58:23,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 181 transitions, 1981 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:23,531 INFO L231 Difference]: Finished difference. Result has 203 places, 167 transitions, 1651 flow [2024-06-03 19:58:23,531 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} [2024-06-03 19:58:23,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-03 19:58:23,531 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 167 transitions, 1651 flow [2024-06-03 19:58:23,532 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) [2024-06-03 19:58:23,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:23,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:23,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:58:23,532 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:23,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1686940584, now seen corresponding path program 4 times [2024-06-03 19:58:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790606819] [2024-06-03 19:58:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:24,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:24,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790606819] [2024-06-03 19:58:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790606819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:24,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27307009] [2024-06-03 19:58:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:24,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:24,253 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) [2024-06-03 19:58:24,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:24,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:24,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:24,478 INFO L124 PetriNetUnfolderBase]: 452/833 cut-off events. [2024-06-03 19:58:24,478 INFO L125 PetriNetUnfolderBase]: For 45151/45157 co-relation queries the response was YES. [2024-06-03 19:58:24,481 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. [2024-06-03 19:58:24,483 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 151 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-03 19:58:24,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 182 transitions, 2059 flow [2024-06-03 19:58:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:58:24,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 19:58:24,484 INFO L175 Difference]: Start difference. First operand has 203 places, 167 transitions, 1651 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:58:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 182 transitions, 2059 flow [2024-06-03 19:58:24,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 182 transitions, 1993 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:24,586 INFO L231 Difference]: Finished difference. Result has 205 places, 168 transitions, 1663 flow [2024-06-03 19:58:24,586 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} [2024-06-03 19:58:24,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-03 19:58:24,586 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 168 transitions, 1663 flow [2024-06-03 19:58:24,587 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) [2024-06-03 19:58:24,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:24,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:58:24,587 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:24,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash 303421690, now seen corresponding path program 5 times [2024-06-03 19:58:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644426452] [2024-06-03 19:58:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644426452] [2024-06-03 19:58:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644426452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:25,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334062174] [2024-06-03 19:58:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:25,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:25,449 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) [2024-06-03 19:58:25,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:25,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:25,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:25,659 INFO L124 PetriNetUnfolderBase]: 456/841 cut-off events. [2024-06-03 19:58:25,660 INFO L125 PetriNetUnfolderBase]: For 46738/46744 co-relation queries the response was YES. [2024-06-03 19:58:25,663 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. [2024-06-03 19:58:25,665 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 58 changer transitions 0/182 dead transitions. [2024-06-03 19:58:25,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 182 transitions, 2075 flow [2024-06-03 19:58:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:25,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 19:58:25,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 19:58:25,666 INFO L175 Difference]: Start difference. First operand has 205 places, 168 transitions, 1663 flow. Second operand 9 states and 103 transitions. [2024-06-03 19:58:25,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 182 transitions, 2075 flow [2024-06-03 19:58:25,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 182 transitions, 2007 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:25,773 INFO L231 Difference]: Finished difference. Result has 207 places, 169 transitions, 1733 flow [2024-06-03 19:58:25,774 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} [2024-06-03 19:58:25,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-03 19:58:25,774 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 169 transitions, 1733 flow [2024-06-03 19:58:25,774 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) [2024-06-03 19:58:25,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:25,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:25,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:58:25,775 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:25,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash 296992600, now seen corresponding path program 6 times [2024-06-03 19:58:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:25,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933744076] [2024-06-03 19:58:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933744076] [2024-06-03 19:58:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933744076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958642443] [2024-06-03 19:58:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:26,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:26,538 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) [2024-06-03 19:58:26,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:26,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:26,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:26,745 INFO L124 PetriNetUnfolderBase]: 460/849 cut-off events. [2024-06-03 19:58:26,745 INFO L125 PetriNetUnfolderBase]: For 48284/48290 co-relation queries the response was YES. [2024-06-03 19:58:26,749 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. [2024-06-03 19:58:26,752 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2024-06-03 19:58:26,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 183 transitions, 2149 flow [2024-06-03 19:58:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 19:58:26,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 19:58:26,753 INFO L175 Difference]: Start difference. First operand has 207 places, 169 transitions, 1733 flow. Second operand 9 states and 103 transitions. [2024-06-03 19:58:26,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 183 transitions, 2149 flow [2024-06-03 19:58:26,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 183 transitions, 2021 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:26,852 INFO L231 Difference]: Finished difference. Result has 209 places, 170 transitions, 1739 flow [2024-06-03 19:58:26,852 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} [2024-06-03 19:58:26,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-03 19:58:26,853 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 170 transitions, 1739 flow [2024-06-03 19:58:26,853 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) [2024-06-03 19:58:26,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:26,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:58:26,853 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1330146958, now seen corresponding path program 7 times [2024-06-03 19:58:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420961660] [2024-06-03 19:58:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420961660] [2024-06-03 19:58:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420961660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:27,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:27,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:27,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945483051] [2024-06-03 19:58:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:27,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:27,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:27,791 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) [2024-06-03 19:58:27,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:27,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:27,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:28,018 INFO L124 PetriNetUnfolderBase]: 464/857 cut-off events. [2024-06-03 19:58:28,019 INFO L125 PetriNetUnfolderBase]: For 49925/49931 co-relation queries the response was YES. [2024-06-03 19:58:28,023 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. [2024-06-03 19:58:28,025 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 57 changer transitions 0/184 dead transitions. [2024-06-03 19:58:28,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 184 transitions, 2157 flow [2024-06-03 19:58:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 19:58:28,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 19:58:28,027 INFO L175 Difference]: Start difference. First operand has 209 places, 170 transitions, 1739 flow. Second operand 9 states and 103 transitions. [2024-06-03 19:58:28,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 184 transitions, 2157 flow [2024-06-03 19:58:28,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 184 transitions, 2033 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:28,120 INFO L231 Difference]: Finished difference. Result has 211 places, 171 transitions, 1755 flow [2024-06-03 19:58:28,120 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} [2024-06-03 19:58:28,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-03 19:58:28,121 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 171 transitions, 1755 flow [2024-06-03 19:58:28,121 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) [2024-06-03 19:58:28,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:28,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:28,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:58:28,121 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:28,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1500844738, now seen corresponding path program 8 times [2024-06-03 19:58:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860219597] [2024-06-03 19:58:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:28,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860219597] [2024-06-03 19:58:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860219597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:28,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:28,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306475158] [2024-06-03 19:58:28,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:28,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:28,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:28,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:28,943 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) [2024-06-03 19:58:28,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:28,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:28,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:29,205 INFO L124 PetriNetUnfolderBase]: 468/865 cut-off events. [2024-06-03 19:58:29,205 INFO L125 PetriNetUnfolderBase]: For 51557/51563 co-relation queries the response was YES. [2024-06-03 19:58:29,210 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. [2024-06-03 19:58:29,213 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 52 changer transitions 0/185 dead transitions. [2024-06-03 19:58:29,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 185 transitions, 2179 flow [2024-06-03 19:58:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-03 19:58:29,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-03 19:58:29,214 INFO L175 Difference]: Start difference. First operand has 211 places, 171 transitions, 1755 flow. Second operand 9 states and 101 transitions. [2024-06-03 19:58:29,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 185 transitions, 2179 flow [2024-06-03 19:58:29,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 185 transitions, 2049 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:29,318 INFO L231 Difference]: Finished difference. Result has 213 places, 172 transitions, 1757 flow [2024-06-03 19:58:29,319 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} [2024-06-03 19:58:29,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-03 19:58:29,319 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 172 transitions, 1757 flow [2024-06-03 19:58:29,319 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) [2024-06-03 19:58:29,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:29,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:29,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:58:29,319 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:29,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1500849388, now seen corresponding path program 9 times [2024-06-03 19:58:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:29,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762056825] [2024-06-03 19:58:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:29,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:30,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:30,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762056825] [2024-06-03 19:58:30,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762056825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:30,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:30,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:30,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719766441] [2024-06-03 19:58:30,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:30,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:30,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:30,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:30,213 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) [2024-06-03 19:58:30,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:30,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:30,450 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2024-06-03 19:58:30,450 INFO L125 PetriNetUnfolderBase]: For 53121/53127 co-relation queries the response was YES. [2024-06-03 19:58:30,455 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. [2024-06-03 19:58:30,457 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 53 changer transitions 0/186 dead transitions. [2024-06-03 19:58:30,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 186 transitions, 2183 flow [2024-06-03 19:58:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 19:58:30,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:58:30,458 INFO L175 Difference]: Start difference. First operand has 213 places, 172 transitions, 1757 flow. Second operand 9 states and 102 transitions. [2024-06-03 19:58:30,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 186 transitions, 2183 flow [2024-06-03 19:58:30,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 186 transitions, 2061 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:30,577 INFO L231 Difference]: Finished difference. Result has 215 places, 173 transitions, 1771 flow [2024-06-03 19:58:30,577 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} [2024-06-03 19:58:30,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 19:58:30,578 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 173 transitions, 1771 flow [2024-06-03 19:58:30,578 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) [2024-06-03 19:58:30,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:30,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:30,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:58:30,578 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:30,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 126170200, now seen corresponding path program 10 times [2024-06-03 19:58:30,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:30,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112202289] [2024-06-03 19:58:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:30,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112202289] [2024-06-03 19:58:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112202289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:31,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:31,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259499784] [2024-06-03 19:58:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:31,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:31,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:31,314 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) [2024-06-03 19:58:31,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:31,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:31,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:31,512 INFO L124 PetriNetUnfolderBase]: 476/881 cut-off events. [2024-06-03 19:58:31,512 INFO L125 PetriNetUnfolderBase]: For 54893/54899 co-relation queries the response was YES. [2024-06-03 19:58:31,516 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. [2024-06-03 19:58:31,518 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 128 selfloop transitions, 58 changer transitions 0/188 dead transitions. [2024-06-03 19:58:31,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 188 transitions, 2335 flow [2024-06-03 19:58:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 19:58:31,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:58:31,519 INFO L175 Difference]: Start difference. First operand has 215 places, 173 transitions, 1771 flow. Second operand 9 states and 102 transitions. [2024-06-03 19:58:31,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 188 transitions, 2335 flow [2024-06-03 19:58:31,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 188 transitions, 2209 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:31,646 INFO L231 Difference]: Finished difference. Result has 217 places, 174 transitions, 1791 flow [2024-06-03 19:58:31,646 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} [2024-06-03 19:58:31,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-03 19:58:31,647 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 174 transitions, 1791 flow [2024-06-03 19:58:31,647 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) [2024-06-03 19:58:31,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:31,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:31,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:58:31,647 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:31,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1684820302, now seen corresponding path program 1 times [2024-06-03 19:58:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712250425] [2024-06-03 19:58:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:31,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:32,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712250425] [2024-06-03 19:58:32,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712250425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:32,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:32,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209446332] [2024-06-03 19:58:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:32,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:32,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:32,610 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) [2024-06-03 19:58:32,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:32,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:32,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:32,916 INFO L124 PetriNetUnfolderBase]: 480/889 cut-off events. [2024-06-03 19:58:32,916 INFO L125 PetriNetUnfolderBase]: For 56313/56319 co-relation queries the response was YES. [2024-06-03 19:58:32,921 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. [2024-06-03 19:58:32,924 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2024-06-03 19:58:32,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 187 transitions, 2201 flow [2024-06-03 19:58:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:58:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:58:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-03 19:58:32,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-03 19:58:32,930 INFO L175 Difference]: Start difference. First operand has 217 places, 174 transitions, 1791 flow. Second operand 12 states and 121 transitions. [2024-06-03 19:58:32,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 187 transitions, 2201 flow [2024-06-03 19:58:33,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 187 transitions, 2077 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:33,054 INFO L231 Difference]: Finished difference. Result has 223 places, 175 transitions, 1766 flow [2024-06-03 19:58:33,054 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} [2024-06-03 19:58:33,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-03 19:58:33,055 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 175 transitions, 1766 flow [2024-06-03 19:58:33,055 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) [2024-06-03 19:58:33,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:33,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:33,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:58:33,055 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:33,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1684464112, now seen corresponding path program 2 times [2024-06-03 19:58:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:33,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472086545] [2024-06-03 19:58:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:33,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:33,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472086545] [2024-06-03 19:58:33,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472086545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:33,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:33,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439137265] [2024-06-03 19:58:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:33,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:33,957 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) [2024-06-03 19:58:33,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:33,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:33,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:34,207 INFO L124 PetriNetUnfolderBase]: 484/897 cut-off events. [2024-06-03 19:58:34,207 INFO L125 PetriNetUnfolderBase]: For 57545/57551 co-relation queries the response was YES. [2024-06-03 19:58:34,212 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. [2024-06-03 19:58:34,214 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 41 changer transitions 0/189 dead transitions. [2024-06-03 19:58:34,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 189 transitions, 2184 flow [2024-06-03 19:58:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:58:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:58:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-03 19:58:34,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-03 19:58:34,215 INFO L175 Difference]: Start difference. First operand has 223 places, 175 transitions, 1766 flow. Second operand 12 states and 121 transitions. [2024-06-03 19:58:34,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 189 transitions, 2184 flow [2024-06-03 19:58:34,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 189 transitions, 2046 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-03 19:58:34,333 INFO L231 Difference]: Finished difference. Result has 223 places, 176 transitions, 1732 flow [2024-06-03 19:58:34,334 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} [2024-06-03 19:58:34,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-03 19:58:34,334 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 176 transitions, 1732 flow [2024-06-03 19:58:34,334 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) [2024-06-03 19:58:34,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:34,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:34,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:58:34,335 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:34,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1348296074, now seen corresponding path program 11 times [2024-06-03 19:58:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688526293] [2024-06-03 19:58:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:34,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:35,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688526293] [2024-06-03 19:58:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688526293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:35,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:35,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982612261] [2024-06-03 19:58:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:35,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:35,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:35,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:35,125 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) [2024-06-03 19:58:35,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:35,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:35,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:35,315 INFO L124 PetriNetUnfolderBase]: 488/905 cut-off events. [2024-06-03 19:58:35,316 INFO L125 PetriNetUnfolderBase]: For 59349/59355 co-relation queries the response was YES. [2024-06-03 19:58:35,320 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. [2024-06-03 19:58:35,322 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 51 changer transitions 0/189 dead transitions. [2024-06-03 19:58:35,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 189 transitions, 2161 flow [2024-06-03 19:58:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 19:58:35,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 19:58:35,323 INFO L175 Difference]: Start difference. First operand has 223 places, 176 transitions, 1732 flow. Second operand 9 states and 102 transitions. [2024-06-03 19:58:35,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 189 transitions, 2161 flow [2024-06-03 19:58:35,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 189 transitions, 2069 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:58:35,456 INFO L231 Difference]: Finished difference. Result has 222 places, 177 transitions, 1771 flow [2024-06-03 19:58:35,457 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} [2024-06-03 19:58:35,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 19:58:35,457 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 177 transitions, 1771 flow [2024-06-03 19:58:35,457 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) [2024-06-03 19:58:35,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:35,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:35,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:58:35,458 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:35,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1348300724, now seen corresponding path program 12 times [2024-06-03 19:58:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:35,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351646581] [2024-06-03 19:58:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351646581] [2024-06-03 19:58:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351646581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616113748] [2024-06-03 19:58:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:36,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:36,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:36,240 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) [2024-06-03 19:58:36,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:36,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:36,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:36,447 INFO L124 PetriNetUnfolderBase]: 492/913 cut-off events. [2024-06-03 19:58:36,448 INFO L125 PetriNetUnfolderBase]: For 61457/61463 co-relation queries the response was YES. [2024-06-03 19:58:36,452 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. [2024-06-03 19:58:36,454 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 54 changer transitions 0/191 dead transitions. [2024-06-03 19:58:36,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 191 transitions, 2346 flow [2024-06-03 19:58:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:58:36,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 19:58:36,455 INFO L175 Difference]: Start difference. First operand has 222 places, 177 transitions, 1771 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:58:36,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 191 transitions, 2346 flow [2024-06-03 19:58:36,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 191 transitions, 2226 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:36,579 INFO L231 Difference]: Finished difference. Result has 224 places, 178 transitions, 1788 flow [2024-06-03 19:58:36,579 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} [2024-06-03 19:58:36,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-03 19:58:36,579 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 178 transitions, 1788 flow [2024-06-03 19:58:36,579 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) [2024-06-03 19:58:36,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:36,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:36,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:58:36,580 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:36,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:36,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1348116150, now seen corresponding path program 1 times [2024-06-03 19:58:36,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:36,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494493076] [2024-06-03 19:58:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:36,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:37,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:37,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494493076] [2024-06-03 19:58:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494493076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:58:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386563276] [2024-06-03 19:58:37,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:37,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:58:37,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:58:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:58:37,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:37,315 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) [2024-06-03 19:58:37,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:37,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:37,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:37,599 INFO L124 PetriNetUnfolderBase]: 488/907 cut-off events. [2024-06-03 19:58:37,600 INFO L125 PetriNetUnfolderBase]: For 57940/57946 co-relation queries the response was YES. [2024-06-03 19:58:37,604 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. [2024-06-03 19:58:37,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 67 changer transitions 0/191 dead transitions. [2024-06-03 19:58:37,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 191 transitions, 2204 flow [2024-06-03 19:58:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:58:37,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:37,607 INFO L175 Difference]: Start difference. First operand has 224 places, 178 transitions, 1788 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:58:37,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 191 transitions, 2204 flow [2024-06-03 19:58:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 191 transitions, 2054 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:58:37,721 INFO L231 Difference]: Finished difference. Result has 226 places, 178 transitions, 1782 flow [2024-06-03 19:58:37,722 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} [2024-06-03 19:58:37,722 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-03 19:58:37,722 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 178 transitions, 1782 flow [2024-06-03 19:58:37,722 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) [2024-06-03 19:58:37,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:37,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:58:37,723 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:37,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1694948312, now seen corresponding path program 2 times [2024-06-03 19:58:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799151974] [2024-06-03 19:58:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799151974] [2024-06-03 19:58:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799151974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:38,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:38,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498945653] [2024-06-03 19:58:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:38,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:38,635 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) [2024-06-03 19:58:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:38,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:38,988 INFO L124 PetriNetUnfolderBase]: 484/901 cut-off events. [2024-06-03 19:58:38,992 INFO L125 PetriNetUnfolderBase]: For 54063/54069 co-relation queries the response was YES. [2024-06-03 19:58:38,997 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. [2024-06-03 19:58:38,999 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 113 selfloop transitions, 78 changer transitions 0/193 dead transitions. [2024-06-03 19:58:38,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 193 transitions, 2208 flow [2024-06-03 19:58:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:58:39,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:58:39,000 INFO L175 Difference]: Start difference. First operand has 226 places, 178 transitions, 1782 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:58:39,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 193 transitions, 2208 flow [2024-06-03 19:58:39,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 193 transitions, 2043 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:39,123 INFO L231 Difference]: Finished difference. Result has 228 places, 178 transitions, 1781 flow [2024-06-03 19:58:39,123 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} [2024-06-03 19:58:39,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-03 19:58:39,123 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 178 transitions, 1781 flow [2024-06-03 19:58:39,124 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) [2024-06-03 19:58:39,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:39,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:58:39,124 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:39,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1980285766, now seen corresponding path program 13 times [2024-06-03 19:58:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:39,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809812103] [2024-06-03 19:58:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:40,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:40,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809812103] [2024-06-03 19:58:40,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809812103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:40,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:40,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:40,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790081907] [2024-06-03 19:58:40,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:40,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:40,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:40,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:40,120 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) [2024-06-03 19:58:40,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:40,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:40,418 INFO L124 PetriNetUnfolderBase]: 488/909 cut-off events. [2024-06-03 19:58:40,419 INFO L125 PetriNetUnfolderBase]: For 55933/55939 co-relation queries the response was YES. [2024-06-03 19:58:40,423 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. [2024-06-03 19:58:40,426 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 133 selfloop transitions, 58 changer transitions 0/193 dead transitions. [2024-06-03 19:58:40,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 193 transitions, 2226 flow [2024-06-03 19:58:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 19:58:40,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 19:58:40,427 INFO L175 Difference]: Start difference. First operand has 228 places, 178 transitions, 1781 flow. Second operand 10 states and 111 transitions. [2024-06-03 19:58:40,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 193 transitions, 2226 flow [2024-06-03 19:58:40,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 193 transitions, 2054 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 19:58:40,551 INFO L231 Difference]: Finished difference. Result has 228 places, 179 transitions, 1756 flow [2024-06-03 19:58:40,551 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} [2024-06-03 19:58:40,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-03 19:58:40,552 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 1756 flow [2024-06-03 19:58:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:58:40,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:40,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:40,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:58:40,552 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:40,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1980039502, now seen corresponding path program 3 times [2024-06-03 19:58:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:40,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219277813] [2024-06-03 19:58:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:41,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219277813] [2024-06-03 19:58:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219277813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:41,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517567782] [2024-06-03 19:58:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:41,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:41,434 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) [2024-06-03 19:58:41,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:41,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:41,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:41,755 INFO L124 PetriNetUnfolderBase]: 504/947 cut-off events. [2024-06-03 19:58:41,756 INFO L125 PetriNetUnfolderBase]: For 83942/83948 co-relation queries the response was YES. [2024-06-03 19:58:41,762 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. [2024-06-03 19:58:41,764 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 71 changer transitions 9/201 dead transitions. [2024-06-03 19:58:41,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 201 transitions, 2242 flow [2024-06-03 19:58:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:58:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:58:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:58:41,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:41,765 INFO L175 Difference]: Start difference. First operand has 228 places, 179 transitions, 1756 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:58:41,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 201 transitions, 2242 flow [2024-06-03 19:58:41,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 201 transitions, 2094 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:41,878 INFO L231 Difference]: Finished difference. Result has 232 places, 176 transitions, 1742 flow [2024-06-03 19:58:41,878 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} [2024-06-03 19:58:41,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-03 19:58:41,879 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 176 transitions, 1742 flow [2024-06-03 19:58:41,879 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) [2024-06-03 19:58:41,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:41,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:58:41,879 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:41,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1341866984, now seen corresponding path program 14 times [2024-06-03 19:58:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033509722] [2024-06-03 19:58:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:42,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033509722] [2024-06-03 19:58:42,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033509722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:42,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:42,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077053855] [2024-06-03 19:58:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:42,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:42,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:42,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:42,756 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) [2024-06-03 19:58:42,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:42,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:42,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:43,003 INFO L124 PetriNetUnfolderBase]: 471/888 cut-off events. [2024-06-03 19:58:43,004 INFO L125 PetriNetUnfolderBase]: For 48662/48668 co-relation queries the response was YES. [2024-06-03 19:58:43,008 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. [2024-06-03 19:58:43,010 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 137 selfloop transitions, 50 changer transitions 0/189 dead transitions. [2024-06-03 19:58:43,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 189 transitions, 2152 flow [2024-06-03 19:58:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:58:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:58:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 19:58:43,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 19:58:43,011 INFO L175 Difference]: Start difference. First operand has 232 places, 176 transitions, 1742 flow. Second operand 9 states and 103 transitions. [2024-06-03 19:58:43,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 189 transitions, 2152 flow [2024-06-03 19:58:43,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 189 transitions, 1902 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-03 19:58:43,122 INFO L231 Difference]: Finished difference. Result has 228 places, 176 transitions, 1596 flow [2024-06-03 19:58:43,123 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} [2024-06-03 19:58:43,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-03 19:58:43,123 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 176 transitions, 1596 flow [2024-06-03 19:58:43,123 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) [2024-06-03 19:58:43,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:43,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:43,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:58:43,124 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:43,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1587800706, now seen corresponding path program 4 times [2024-06-03 19:58:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748995809] [2024-06-03 19:58:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:43,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:43,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748995809] [2024-06-03 19:58:43,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748995809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:43,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768202278] [2024-06-03 19:58:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:43,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:43,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:43,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:43,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:43,993 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) [2024-06-03 19:58:43,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:43,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:43,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:44,269 INFO L124 PetriNetUnfolderBase]: 484/919 cut-off events. [2024-06-03 19:58:44,269 INFO L125 PetriNetUnfolderBase]: For 67267/67273 co-relation queries the response was YES. [2024-06-03 19:58:44,273 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. [2024-06-03 19:58:44,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 61 changer transitions 10/195 dead transitions. [2024-06-03 19:58:44,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 195 transitions, 2048 flow [2024-06-03 19:58:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:58:44,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 19:58:44,284 INFO L175 Difference]: Start difference. First operand has 228 places, 176 transitions, 1596 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:58:44,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 195 transitions, 2048 flow [2024-06-03 19:58:44,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 195 transitions, 1896 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:44,375 INFO L231 Difference]: Finished difference. Result has 229 places, 171 transitions, 1529 flow [2024-06-03 19:58:44,375 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} [2024-06-03 19:58:44,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 19:58:44,376 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 171 transitions, 1529 flow [2024-06-03 19:58:44,376 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) [2024-06-03 19:58:44,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:44,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:44,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:58:44,376 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:44,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash 158202760, now seen corresponding path program 1 times [2024-06-03 19:58:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:44,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257379605] [2024-06-03 19:58:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257379605] [2024-06-03 19:58:45,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257379605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:45,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:45,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65086707] [2024-06-03 19:58:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:45,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:45,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:45,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:45,229 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) [2024-06-03 19:58:45,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:45,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:45,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:45,468 INFO L124 PetriNetUnfolderBase]: 454/869 cut-off events. [2024-06-03 19:58:45,469 INFO L125 PetriNetUnfolderBase]: For 41000/41006 co-relation queries the response was YES. [2024-06-03 19:58:45,473 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. [2024-06-03 19:58:45,475 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 159 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-06-03 19:58:45,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 188 transitions, 1943 flow [2024-06-03 19:58:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 19:58:45,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 19:58:45,476 INFO L175 Difference]: Start difference. First operand has 229 places, 171 transitions, 1529 flow. Second operand 10 states and 100 transitions. [2024-06-03 19:58:45,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 188 transitions, 1943 flow [2024-06-03 19:58:45,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 188 transitions, 1761 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:58:45,573 INFO L231 Difference]: Finished difference. Result has 228 places, 172 transitions, 1413 flow [2024-06-03 19:58:45,573 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} [2024-06-03 19:58:45,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-03 19:58:45,573 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 172 transitions, 1413 flow [2024-06-03 19:58:45,574 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) [2024-06-03 19:58:45,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:45,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:45,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:58:45,574 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:45,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 346595270, now seen corresponding path program 2 times [2024-06-03 19:58:45,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:45,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957603738] [2024-06-03 19:58:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:46,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:46,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957603738] [2024-06-03 19:58:46,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957603738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:46,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:46,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288532408] [2024-06-03 19:58:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:46,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:46,533 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) [2024-06-03 19:58:46,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:46,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:46,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:46,796 INFO L124 PetriNetUnfolderBase]: 465/890 cut-off events. [2024-06-03 19:58:46,796 INFO L125 PetriNetUnfolderBase]: For 47427/47433 co-relation queries the response was YES. [2024-06-03 19:58:46,801 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. [2024-06-03 19:58:46,803 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-06-03 19:58:46,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 191 transitions, 2003 flow [2024-06-03 19:58:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:58:46,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 19:58:46,809 INFO L175 Difference]: Start difference. First operand has 228 places, 172 transitions, 1413 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:58:46,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 191 transitions, 2003 flow [2024-06-03 19:58:46,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 191 transitions, 1923 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:46,920 INFO L231 Difference]: Finished difference. Result has 229 places, 174 transitions, 1417 flow [2024-06-03 19:58:46,921 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} [2024-06-03 19:58:46,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-03 19:58:46,921 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 174 transitions, 1417 flow [2024-06-03 19:58:46,921 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) [2024-06-03 19:58:46,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:46,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:46,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:58:46,922 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:46,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash 346600850, now seen corresponding path program 3 times [2024-06-03 19:58:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558204765] [2024-06-03 19:58:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:46,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:47,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:47,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558204765] [2024-06-03 19:58:47,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558204765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:47,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189628888] [2024-06-03 19:58:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:47,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:47,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:47,758 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) [2024-06-03 19:58:47,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:47,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:47,997 INFO L124 PetriNetUnfolderBase]: 462/885 cut-off events. [2024-06-03 19:58:47,997 INFO L125 PetriNetUnfolderBase]: For 42755/42761 co-relation queries the response was YES. [2024-06-03 19:58:48,002 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. [2024-06-03 19:58:48,004 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 157 selfloop transitions, 31 changer transitions 0/190 dead transitions. [2024-06-03 19:58:48,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 190 transitions, 1837 flow [2024-06-03 19:58:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 19:58:48,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-03 19:58:48,005 INFO L175 Difference]: Start difference. First operand has 229 places, 174 transitions, 1417 flow. Second operand 10 states and 104 transitions. [2024-06-03 19:58:48,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 190 transitions, 1837 flow [2024-06-03 19:58:48,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 190 transitions, 1789 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:58:48,101 INFO L231 Difference]: Finished difference. Result has 233 places, 174 transitions, 1436 flow [2024-06-03 19:58:48,101 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} [2024-06-03 19:58:48,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 19:58:48,101 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 174 transitions, 1436 flow [2024-06-03 19:58:48,101 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) [2024-06-03 19:58:48,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:48,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:48,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:58:48,102 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:48,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1813945678, now seen corresponding path program 4 times [2024-06-03 19:58:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:48,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961235038] [2024-06-03 19:58:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:48,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961235038] [2024-06-03 19:58:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961235038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580257538] [2024-06-03 19:58:48,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:48,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:48,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:48,983 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) [2024-06-03 19:58:48,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:48,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:48,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:49,236 INFO L124 PetriNetUnfolderBase]: 466/893 cut-off events. [2024-06-03 19:58:49,236 INFO L125 PetriNetUnfolderBase]: For 43758/43764 co-relation queries the response was YES. [2024-06-03 19:58:49,241 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. [2024-06-03 19:58:49,243 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-06-03 19:58:49,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 191 transitions, 1862 flow [2024-06-03 19:58:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:58:49,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 19:58:49,258 INFO L175 Difference]: Start difference. First operand has 233 places, 174 transitions, 1436 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:58:49,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 191 transitions, 1862 flow [2024-06-03 19:58:49,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 191 transitions, 1797 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:49,351 INFO L231 Difference]: Finished difference. Result has 234 places, 175 transitions, 1447 flow [2024-06-03 19:58:49,351 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} [2024-06-03 19:58:49,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 19:58:49,351 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 175 transitions, 1447 flow [2024-06-03 19:58:49,352 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) [2024-06-03 19:58:49,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:49,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:58:49,352 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:49,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash 342876200, now seen corresponding path program 5 times [2024-06-03 19:58:49,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636942448] [2024-06-03 19:58:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:50,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636942448] [2024-06-03 19:58:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636942448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:50,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574979758] [2024-06-03 19:58:50,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:50,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:50,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:50,115 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) [2024-06-03 19:58:50,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:50,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:50,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:50,363 INFO L124 PetriNetUnfolderBase]: 470/901 cut-off events. [2024-06-03 19:58:50,364 INFO L125 PetriNetUnfolderBase]: For 44998/45004 co-relation queries the response was YES. [2024-06-03 19:58:50,369 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. [2024-06-03 19:58:50,371 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 159 selfloop transitions, 31 changer transitions 0/192 dead transitions. [2024-06-03 19:58:50,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 192 transitions, 1875 flow [2024-06-03 19:58:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:58:50,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-03 19:58:50,372 INFO L175 Difference]: Start difference. First operand has 234 places, 175 transitions, 1447 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:58:50,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 192 transitions, 1875 flow [2024-06-03 19:58:50,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 192 transitions, 1809 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:50,489 INFO L231 Difference]: Finished difference. Result has 236 places, 176 transitions, 1459 flow [2024-06-03 19:58:50,489 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} [2024-06-03 19:58:50,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-03 19:58:50,489 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 176 transitions, 1459 flow [2024-06-03 19:58:50,490 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) [2024-06-03 19:58:50,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:50,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:58:50,490 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:50,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash 823496376, now seen corresponding path program 6 times [2024-06-03 19:58:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400870284] [2024-06-03 19:58:50,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:51,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:51,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400870284] [2024-06-03 19:58:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400870284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874195790] [2024-06-03 19:58:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:51,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:51,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:51,322 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) [2024-06-03 19:58:51,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:51,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:51,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:51,565 INFO L124 PetriNetUnfolderBase]: 474/909 cut-off events. [2024-06-03 19:58:51,565 INFO L125 PetriNetUnfolderBase]: For 46225/46231 co-relation queries the response was YES. [2024-06-03 19:58:51,570 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. [2024-06-03 19:58:51,573 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 71 changer transitions 0/192 dead transitions. [2024-06-03 19:58:51,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 192 transitions, 1893 flow [2024-06-03 19:58:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:58:51,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 19:58:51,574 INFO L175 Difference]: Start difference. First operand has 236 places, 176 transitions, 1459 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:58:51,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 192 transitions, 1893 flow [2024-06-03 19:58:51,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 192 transitions, 1825 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:51,687 INFO L231 Difference]: Finished difference. Result has 238 places, 177 transitions, 1551 flow [2024-06-03 19:58:51,688 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} [2024-06-03 19:58:51,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 19:58:51,688 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 177 transitions, 1551 flow [2024-06-03 19:58:51,688 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) [2024-06-03 19:58:51,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:51,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:51,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:58:51,689 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:51,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 823773082, now seen corresponding path program 1 times [2024-06-03 19:58:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:51,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304928275] [2024-06-03 19:58:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:51,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304928275] [2024-06-03 19:58:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304928275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:52,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190063526] [2024-06-03 19:58:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:52,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:52,422 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) [2024-06-03 19:58:52,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:52,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:52,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:52,685 INFO L124 PetriNetUnfolderBase]: 522/1009 cut-off events. [2024-06-03 19:58:52,686 INFO L125 PetriNetUnfolderBase]: For 106232/106238 co-relation queries the response was YES. [2024-06-03 19:58:52,692 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. [2024-06-03 19:58:52,694 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 81 changer transitions 6/201 dead transitions. [2024-06-03 19:58:52,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 201 transitions, 2209 flow [2024-06-03 19:58:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:58:52,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 19:58:52,695 INFO L175 Difference]: Start difference. First operand has 238 places, 177 transitions, 1551 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:58:52,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 201 transitions, 2209 flow [2024-06-03 19:58:52,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 201 transitions, 2047 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:52,920 INFO L231 Difference]: Finished difference. Result has 240 places, 176 transitions, 1548 flow [2024-06-03 19:58:52,920 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} [2024-06-03 19:58:52,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 19:58:52,920 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 176 transitions, 1548 flow [2024-06-03 19:58:52,920 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) [2024-06-03 19:58:52,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:52,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:52,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:58:52,921 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:52,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1922189186, now seen corresponding path program 2 times [2024-06-03 19:58:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697089830] [2024-06-03 19:58:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:52,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697089830] [2024-06-03 19:58:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697089830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:58:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425198952] [2024-06-03 19:58:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:58:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:58:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:58:53,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:53,651 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) [2024-06-03 19:58:53,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:53,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:53,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:53,929 INFO L124 PetriNetUnfolderBase]: 508/987 cut-off events. [2024-06-03 19:58:53,929 INFO L125 PetriNetUnfolderBase]: For 101972/101978 co-relation queries the response was YES. [2024-06-03 19:58:53,935 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. [2024-06-03 19:58:53,937 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 80 changer transitions 7/195 dead transitions. [2024-06-03 19:58:53,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 195 transitions, 2000 flow [2024-06-03 19:58:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:58:53,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-03 19:58:53,938 INFO L175 Difference]: Start difference. First operand has 240 places, 176 transitions, 1548 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:58:53,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 195 transitions, 2000 flow [2024-06-03 19:58:54,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 195 transitions, 1836 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:58:54,136 INFO L231 Difference]: Finished difference. Result has 240 places, 173 transitions, 1529 flow [2024-06-03 19:58:54,136 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} [2024-06-03 19:58:54,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 19:58:54,136 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 173 transitions, 1529 flow [2024-06-03 19:58:54,136 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) [2024-06-03 19:58:54,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:54,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:58:54,137 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:54,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1914570130, now seen corresponding path program 7 times [2024-06-03 19:58:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520257242] [2024-06-03 19:58:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520257242] [2024-06-03 19:58:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520257242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:54,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333742290] [2024-06-03 19:58:54,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:54,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:55,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:55,096 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) [2024-06-03 19:58:55,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:55,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:55,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:55,382 INFO L124 PetriNetUnfolderBase]: 466/901 cut-off events. [2024-06-03 19:58:55,382 INFO L125 PetriNetUnfolderBase]: For 48414/48420 co-relation queries the response was YES. [2024-06-03 19:58:55,388 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. [2024-06-03 19:58:55,390 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 67 changer transitions 0/189 dead transitions. [2024-06-03 19:58:55,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 189 transitions, 1959 flow [2024-06-03 19:58:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 19:58:55,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-03 19:58:55,391 INFO L175 Difference]: Start difference. First operand has 240 places, 173 transitions, 1529 flow. Second operand 10 states and 113 transitions. [2024-06-03 19:58:55,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 189 transitions, 1959 flow [2024-06-03 19:58:55,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 189 transitions, 1793 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-03 19:58:55,528 INFO L231 Difference]: Finished difference. Result has 239 places, 174 transitions, 1517 flow [2024-06-03 19:58:55,528 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} [2024-06-03 19:58:55,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-03 19:58:55,529 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 174 transitions, 1517 flow [2024-06-03 19:58:55,529 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) [2024-06-03 19:58:55,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:55,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:55,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:58:55,529 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:55,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1914564550, now seen corresponding path program 8 times [2024-06-03 19:58:55,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:55,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127867590] [2024-06-03 19:58:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127867590] [2024-06-03 19:58:56,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127867590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:56,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:56,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:56,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264537136] [2024-06-03 19:58:56,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:56,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:56,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:56,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:56,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:56,547 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) [2024-06-03 19:58:56,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:56,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:56,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:56,781 INFO L124 PetriNetUnfolderBase]: 470/909 cut-off events. [2024-06-03 19:58:56,781 INFO L125 PetriNetUnfolderBase]: For 48616/48622 co-relation queries the response was YES. [2024-06-03 19:58:56,787 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. [2024-06-03 19:58:56,789 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 69 changer transitions 0/190 dead transitions. [2024-06-03 19:58:56,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 190 transitions, 1949 flow [2024-06-03 19:58:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:58:56,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 19:58:56,790 INFO L175 Difference]: Start difference. First operand has 239 places, 174 transitions, 1517 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:58:56,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 190 transitions, 1949 flow [2024-06-03 19:58:56,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 190 transitions, 1805 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:56,914 INFO L231 Difference]: Finished difference. Result has 241 places, 175 transitions, 1533 flow [2024-06-03 19:58:56,914 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} [2024-06-03 19:58:56,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-03 19:58:56,915 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 175 transitions, 1533 flow [2024-06-03 19:58:56,915 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) [2024-06-03 19:58:56,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:56,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:58:56,915 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:56,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1715268340, now seen corresponding path program 9 times [2024-06-03 19:58:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483040656] [2024-06-03 19:58:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:57,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483040656] [2024-06-03 19:58:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483040656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:57,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045762831] [2024-06-03 19:58:57,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:57,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:57,803 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) [2024-06-03 19:58:57,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:57,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:57,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:58,106 INFO L124 PetriNetUnfolderBase]: 474/917 cut-off events. [2024-06-03 19:58:58,107 INFO L125 PetriNetUnfolderBase]: For 49837/49843 co-relation queries the response was YES. [2024-06-03 19:58:58,112 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. [2024-06-03 19:58:58,114 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 64 changer transitions 0/191 dead transitions. [2024-06-03 19:58:58,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 191 transitions, 1971 flow [2024-06-03 19:58:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 19:58:58,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-03 19:58:58,116 INFO L175 Difference]: Start difference. First operand has 241 places, 175 transitions, 1533 flow. Second operand 10 states and 113 transitions. [2024-06-03 19:58:58,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 191 transitions, 1971 flow [2024-06-03 19:58:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 191 transitions, 1821 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:58,278 INFO L231 Difference]: Finished difference. Result has 243 places, 176 transitions, 1535 flow [2024-06-03 19:58:58,278 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} [2024-06-03 19:58:58,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-03 19:58:58,279 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 176 transitions, 1535 flow [2024-06-03 19:58:58,279 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) [2024-06-03 19:58:58,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:58,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:58:58,279 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:58,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 616837356, now seen corresponding path program 10 times [2024-06-03 19:58:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539924055] [2024-06-03 19:58:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:58:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:58:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:58:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539924055] [2024-06-03 19:58:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539924055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:58:59,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:58:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:58:59,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267571734] [2024-06-03 19:58:59,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:58:59,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:58:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:58:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:58:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:58:59,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:58:59,250 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) [2024-06-03 19:58:59,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:58:59,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:58:59,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:58:59,597 INFO L124 PetriNetUnfolderBase]: 478/925 cut-off events. [2024-06-03 19:58:59,598 INFO L125 PetriNetUnfolderBase]: For 51043/51049 co-relation queries the response was YES. [2024-06-03 19:58:59,603 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. [2024-06-03 19:58:59,605 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 65 changer transitions 0/192 dead transitions. [2024-06-03 19:58:59,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 192 transitions, 1975 flow [2024-06-03 19:58:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:58:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:58:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:58:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 19:58:59,606 INFO L175 Difference]: Start difference. First operand has 243 places, 176 transitions, 1535 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:58:59,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 192 transitions, 1975 flow [2024-06-03 19:58:59,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 192 transitions, 1833 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 19:58:59,766 INFO L231 Difference]: Finished difference. Result has 245 places, 177 transitions, 1549 flow [2024-06-03 19:58:59,766 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} [2024-06-03 19:58:59,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-03 19:58:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 177 transitions, 1549 flow [2024-06-03 19:58:59,767 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) [2024-06-03 19:58:59,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:58:59,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:58:59,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:58:59,767 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:58:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:58:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 616693206, now seen corresponding path program 11 times [2024-06-03 19:58:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:58:59,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910621931] [2024-06-03 19:58:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:58:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:58:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:00,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910621931] [2024-06-03 19:59:00,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910621931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:00,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:00,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:00,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836194802] [2024-06-03 19:59:00,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:00,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:00,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:00,766 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) [2024-06-03 19:59:00,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:00,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:00,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:01,028 INFO L124 PetriNetUnfolderBase]: 482/933 cut-off events. [2024-06-03 19:59:01,028 INFO L125 PetriNetUnfolderBase]: For 52414/52420 co-relation queries the response was YES. [2024-06-03 19:59:01,034 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. [2024-06-03 19:59:01,036 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-06-03 19:59:01,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 193 transitions, 1991 flow [2024-06-03 19:59:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:59:01,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 19:59:01,037 INFO L175 Difference]: Start difference. First operand has 245 places, 177 transitions, 1549 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:59:01,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 193 transitions, 1991 flow [2024-06-03 19:59:01,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 193 transitions, 1845 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:01,197 INFO L231 Difference]: Finished difference. Result has 247 places, 178 transitions, 1569 flow [2024-06-03 19:59:01,197 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} [2024-06-03 19:59:01,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-03 19:59:01,198 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 178 transitions, 1569 flow [2024-06-03 19:59:01,198 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) [2024-06-03 19:59:01,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:01,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:01,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:59:01,198 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:01,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash -379965098, now seen corresponding path program 12 times [2024-06-03 19:59:01,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13305008] [2024-06-03 19:59:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13305008] [2024-06-03 19:59:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13305008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:02,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:02,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:02,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688920084] [2024-06-03 19:59:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:02,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:02,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:02,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:02,156 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) [2024-06-03 19:59:02,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:02,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:02,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:02,555 INFO L124 PetriNetUnfolderBase]: 486/941 cut-off events. [2024-06-03 19:59:02,555 INFO L125 PetriNetUnfolderBase]: For 53728/53734 co-relation queries the response was YES. [2024-06-03 19:59:02,561 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. [2024-06-03 19:59:02,563 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 63 changer transitions 0/194 dead transitions. [2024-06-03 19:59:02,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 194 transitions, 2019 flow [2024-06-03 19:59:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 19:59:02,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 19:59:02,564 INFO L175 Difference]: Start difference. First operand has 247 places, 178 transitions, 1569 flow. Second operand 10 states and 111 transitions. [2024-06-03 19:59:02,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 194 transitions, 2019 flow [2024-06-03 19:59:02,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 194 transitions, 1863 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:02,717 INFO L231 Difference]: Finished difference. Result has 249 places, 179 transitions, 1569 flow [2024-06-03 19:59:02,717 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} [2024-06-03 19:59:02,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-03 19:59:02,717 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 179 transitions, 1569 flow [2024-06-03 19:59:02,718 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) [2024-06-03 19:59:02,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:02,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:02,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:59:02,718 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:02,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash -379970678, now seen corresponding path program 13 times [2024-06-03 19:59:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453787617] [2024-06-03 19:59:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453787617] [2024-06-03 19:59:03,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453787617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:03,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:03,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965147711] [2024-06-03 19:59:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:03,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:03,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:03,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:03,530 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) [2024-06-03 19:59:03,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:03,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:03,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:03,781 INFO L124 PetriNetUnfolderBase]: 490/949 cut-off events. [2024-06-03 19:59:03,782 INFO L125 PetriNetUnfolderBase]: For 54906/54912 co-relation queries the response was YES. [2024-06-03 19:59:03,787 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. [2024-06-03 19:59:03,789 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 77 changer transitions 0/195 dead transitions. [2024-06-03 19:59:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 195 transitions, 2021 flow [2024-06-03 19:59:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:59:03,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 19:59:03,791 INFO L175 Difference]: Start difference. First operand has 249 places, 179 transitions, 1569 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:59:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 195 transitions, 2021 flow [2024-06-03 19:59:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 195 transitions, 1906 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 19:59:03,927 INFO L231 Difference]: Finished difference. Result has 252 places, 180 transitions, 1640 flow [2024-06-03 19:59:03,927 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} [2024-06-03 19:59:03,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 19:59:03,928 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 180 transitions, 1640 flow [2024-06-03 19:59:03,928 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) [2024-06-03 19:59:03,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:03,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:03,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:59:03,928 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:03,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash -910093078, now seen corresponding path program 14 times [2024-06-03 19:59:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:03,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587710931] [2024-06-03 19:59:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:03,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587710931] [2024-06-03 19:59:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587710931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:04,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148883918] [2024-06-03 19:59:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:04,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:04,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:04,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:04,784 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) [2024-06-03 19:59:04,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:04,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:04,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:05,057 INFO L124 PetriNetUnfolderBase]: 494/957 cut-off events. [2024-06-03 19:59:05,057 INFO L125 PetriNetUnfolderBase]: For 56393/56399 co-relation queries the response was YES. [2024-06-03 19:59:05,063 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. [2024-06-03 19:59:05,065 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 65 changer transitions 0/196 dead transitions. [2024-06-03 19:59:05,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 196 transitions, 2094 flow [2024-06-03 19:59:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 19:59:05,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-03 19:59:05,066 INFO L175 Difference]: Start difference. First operand has 252 places, 180 transitions, 1640 flow. Second operand 10 states and 113 transitions. [2024-06-03 19:59:05,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 196 transitions, 2094 flow [2024-06-03 19:59:05,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 196 transitions, 1918 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:05,217 INFO L231 Difference]: Finished difference. Result has 254 places, 181 transitions, 1628 flow [2024-06-03 19:59:05,217 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} [2024-06-03 19:59:05,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 19:59:05,217 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 181 transitions, 1628 flow [2024-06-03 19:59:05,217 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) [2024-06-03 19:59:05,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:05,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:59:05,218 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash -383689748, now seen corresponding path program 15 times [2024-06-03 19:59:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341911497] [2024-06-03 19:59:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:05,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:05,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341911497] [2024-06-03 19:59:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341911497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:05,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:05,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:05,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159751572] [2024-06-03 19:59:05,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:05,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:05,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:05,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:05,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:06,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:06,100 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) [2024-06-03 19:59:06,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:06,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:06,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:06,332 INFO L124 PetriNetUnfolderBase]: 498/965 cut-off events. [2024-06-03 19:59:06,332 INFO L125 PetriNetUnfolderBase]: For 57962/57968 co-relation queries the response was YES. [2024-06-03 19:59:06,338 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. [2024-06-03 19:59:06,341 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 73 changer transitions 0/198 dead transitions. [2024-06-03 19:59:06,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 198 transitions, 2266 flow [2024-06-03 19:59:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 19:59:06,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-03 19:59:06,342 INFO L175 Difference]: Start difference. First operand has 254 places, 181 transitions, 1628 flow. Second operand 10 states and 113 transitions. [2024-06-03 19:59:06,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 198 transitions, 2266 flow [2024-06-03 19:59:06,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 198 transitions, 2112 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:06,499 INFO L231 Difference]: Finished difference. Result has 256 places, 182 transitions, 1654 flow [2024-06-03 19:59:06,500 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} [2024-06-03 19:59:06,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-03 19:59:06,500 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 182 transitions, 1654 flow [2024-06-03 19:59:06,502 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) [2024-06-03 19:59:06,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:06,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:06,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:59:06,503 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:06,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1003796646, now seen corresponding path program 16 times [2024-06-03 19:59:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337854006] [2024-06-03 19:59:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337854006] [2024-06-03 19:59:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337854006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:07,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5311818] [2024-06-03 19:59:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:07,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:07,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:07,616 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) [2024-06-03 19:59:07,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:07,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:07,995 INFO L124 PetriNetUnfolderBase]: 502/973 cut-off events. [2024-06-03 19:59:07,995 INFO L125 PetriNetUnfolderBase]: For 59455/59461 co-relation queries the response was YES. [2024-06-03 19:59:08,002 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. [2024-06-03 19:59:08,004 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 71 changer transitions 0/199 dead transitions. [2024-06-03 19:59:08,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 199 transitions, 2124 flow [2024-06-03 19:59:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 19:59:08,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 19:59:08,007 INFO L175 Difference]: Start difference. First operand has 256 places, 182 transitions, 1654 flow. Second operand 11 states and 123 transitions. [2024-06-03 19:59:08,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 199 transitions, 2124 flow [2024-06-03 19:59:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 199 transitions, 1961 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:08,182 INFO L231 Difference]: Finished difference. Result has 259 places, 183 transitions, 1671 flow [2024-06-03 19:59:08,182 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} [2024-06-03 19:59:08,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 19:59:08,183 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 183 transitions, 1671 flow [2024-06-03 19:59:08,183 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) [2024-06-03 19:59:08,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:08,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:08,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:59:08,184 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:08,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1480293416, now seen corresponding path program 3 times [2024-06-03 19:59:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:08,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847554870] [2024-06-03 19:59:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847554870] [2024-06-03 19:59:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847554870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:08,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:08,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:08,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915982218] [2024-06-03 19:59:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:08,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:09,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:09,020 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) [2024-06-03 19:59:09,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:09,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:09,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:09,411 INFO L124 PetriNetUnfolderBase]: 518/1009 cut-off events. [2024-06-03 19:59:09,411 INFO L125 PetriNetUnfolderBase]: For 93045/93051 co-relation queries the response was YES. [2024-06-03 19:59:09,416 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. [2024-06-03 19:59:09,418 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 79 changer transitions 8/204 dead transitions. [2024-06-03 19:59:09,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 204 transitions, 2147 flow [2024-06-03 19:59:09,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:59:09,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 19:59:09,419 INFO L175 Difference]: Start difference. First operand has 259 places, 183 transitions, 1671 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:59:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 204 transitions, 2147 flow [2024-06-03 19:59:09,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 204 transitions, 1982 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:09,597 INFO L231 Difference]: Finished difference. Result has 261 places, 179 transitions, 1642 flow [2024-06-03 19:59:09,598 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} [2024-06-03 19:59:09,599 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-03 19:59:09,599 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 179 transitions, 1642 flow [2024-06-03 19:59:09,599 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) [2024-06-03 19:59:09,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:09,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:09,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:59:09,599 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:09,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1259309674, now seen corresponding path program 17 times [2024-06-03 19:59:09,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:09,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088492997] [2024-06-03 19:59:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:09,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:10,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088492997] [2024-06-03 19:59:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088492997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:10,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:10,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416010552] [2024-06-03 19:59:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:10,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:10,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:10,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:10,649 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) [2024-06-03 19:59:10,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:10,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:11,026 INFO L124 PetriNetUnfolderBase]: 496/967 cut-off events. [2024-06-03 19:59:11,026 INFO L125 PetriNetUnfolderBase]: For 61442/61448 co-relation queries the response was YES. [2024-06-03 19:59:11,033 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. [2024-06-03 19:59:11,035 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 68 changer transitions 0/196 dead transitions. [2024-06-03 19:59:11,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 196 transitions, 2103 flow [2024-06-03 19:59:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 19:59:11,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 19:59:11,036 INFO L175 Difference]: Start difference. First operand has 261 places, 179 transitions, 1642 flow. Second operand 11 states and 123 transitions. [2024-06-03 19:59:11,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 196 transitions, 2103 flow [2024-06-03 19:59:11,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 196 transitions, 1938 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:11,186 INFO L231 Difference]: Finished difference. Result has 260 places, 180 transitions, 1648 flow [2024-06-03 19:59:11,186 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} [2024-06-03 19:59:11,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 19:59:11,186 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 180 transitions, 1648 flow [2024-06-03 19:59:11,187 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) [2024-06-03 19:59:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:11,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:11,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:59:11,187 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:11,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1259315254, now seen corresponding path program 18 times [2024-06-03 19:59:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828904371] [2024-06-03 19:59:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:11,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:11,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828904371] [2024-06-03 19:59:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828904371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:11,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819275011] [2024-06-03 19:59:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:12,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:12,070 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) [2024-06-03 19:59:12,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:12,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:12,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:12,370 INFO L124 PetriNetUnfolderBase]: 536/1047 cut-off events. [2024-06-03 19:59:12,370 INFO L125 PetriNetUnfolderBase]: For 112882/112888 co-relation queries the response was YES. [2024-06-03 19:59:12,377 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. [2024-06-03 19:59:12,379 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 80 changer transitions 0/204 dead transitions. [2024-06-03 19:59:12,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 204 transitions, 2370 flow [2024-06-03 19:59:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:59:12,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:59:12,380 INFO L175 Difference]: Start difference. First operand has 260 places, 180 transitions, 1648 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:59:12,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 204 transitions, 2370 flow [2024-06-03 19:59:12,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 204 transitions, 2218 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:12,614 INFO L231 Difference]: Finished difference. Result has 263 places, 182 transitions, 1724 flow [2024-06-03 19:59:12,614 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} [2024-06-03 19:59:12,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:59:12,615 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 182 transitions, 1724 flow [2024-06-03 19:59:12,615 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) [2024-06-03 19:59:12,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:12,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:12,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:59:12,615 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:12,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash -689820710, now seen corresponding path program 4 times [2024-06-03 19:59:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:12,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914332013] [2024-06-03 19:59:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:12,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914332013] [2024-06-03 19:59:13,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914332013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:13,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:13,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929073781] [2024-06-03 19:59:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:13,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:13,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:13,361 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) [2024-06-03 19:59:13,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:13,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:13,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:13,664 INFO L124 PetriNetUnfolderBase]: 577/1134 cut-off events. [2024-06-03 19:59:13,664 INFO L125 PetriNetUnfolderBase]: For 183702/183708 co-relation queries the response was YES. [2024-06-03 19:59:13,672 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. [2024-06-03 19:59:13,674 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 73 changer transitions 10/207 dead transitions. [2024-06-03 19:59:13,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 207 transitions, 2410 flow [2024-06-03 19:59:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 19:59:13,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 19:59:13,675 INFO L175 Difference]: Start difference. First operand has 263 places, 182 transitions, 1724 flow. Second operand 11 states and 135 transitions. [2024-06-03 19:59:13,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 207 transitions, 2410 flow [2024-06-03 19:59:13,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 207 transitions, 2276 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 19:59:13,992 INFO L231 Difference]: Finished difference. Result has 267 places, 177 transitions, 1700 flow [2024-06-03 19:59:13,992 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} [2024-06-03 19:59:13,992 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-03 19:59:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 177 transitions, 1700 flow [2024-06-03 19:59:13,992 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) [2024-06-03 19:59:13,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:13,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:13,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:59:13,993 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:13,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1152501594, now seen corresponding path program 19 times [2024-06-03 19:59:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714694253] [2024-06-03 19:59:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:13,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:14,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:14,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714694253] [2024-06-03 19:59:14,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714694253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:14,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:14,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520659186] [2024-06-03 19:59:14,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:14,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:14,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:14,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:14,852 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) [2024-06-03 19:59:14,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:14,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:14,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:15,158 INFO L124 PetriNetUnfolderBase]: 559/1096 cut-off events. [2024-06-03 19:59:15,158 INFO L125 PetriNetUnfolderBase]: For 161352/161358 co-relation queries the response was YES. [2024-06-03 19:59:15,166 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. [2024-06-03 19:59:15,169 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-06-03 19:59:15,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 193 transitions, 2157 flow [2024-06-03 19:59:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:59:15,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 19:59:15,170 INFO L175 Difference]: Start difference. First operand has 267 places, 177 transitions, 1700 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:59:15,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 193 transitions, 2157 flow [2024-06-03 19:59:15,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 193 transitions, 2006 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:15,539 INFO L231 Difference]: Finished difference. Result has 261 places, 178 transitions, 1726 flow [2024-06-03 19:59:15,539 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} [2024-06-03 19:59:15,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-03 19:59:15,540 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 178 transitions, 1726 flow [2024-06-03 19:59:15,540 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) [2024-06-03 19:59:15,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:15,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:15,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:59:15,540 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:15,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1152496014, now seen corresponding path program 20 times [2024-06-03 19:59:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:15,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761535886] [2024-06-03 19:59:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761535886] [2024-06-03 19:59:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761535886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:16,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:16,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:16,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161841310] [2024-06-03 19:59:16,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:16,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:16,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:16,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:16,323 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) [2024-06-03 19:59:16,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:16,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:16,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:16,615 INFO L124 PetriNetUnfolderBase]: 563/1104 cut-off events. [2024-06-03 19:59:16,615 INFO L125 PetriNetUnfolderBase]: For 155258/155264 co-relation queries the response was YES. [2024-06-03 19:59:16,623 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. [2024-06-03 19:59:16,626 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 70 changer transitions 0/194 dead transitions. [2024-06-03 19:59:16,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 194 transitions, 2185 flow [2024-06-03 19:59:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:59:16,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 19:59:16,627 INFO L175 Difference]: Start difference. First operand has 261 places, 178 transitions, 1726 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:59:16,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 194 transitions, 2185 flow [2024-06-03 19:59:16,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 194 transitions, 2019 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:16,975 INFO L231 Difference]: Finished difference. Result has 263 places, 179 transitions, 1741 flow [2024-06-03 19:59:16,975 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} [2024-06-03 19:59:16,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 19:59:16,975 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 179 transitions, 1741 flow [2024-06-03 19:59:16,975 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) [2024-06-03 19:59:16,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:16,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:59:16,976 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:16,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1480552886, now seen corresponding path program 5 times [2024-06-03 19:59:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:16,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856594451] [2024-06-03 19:59:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:17,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:17,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856594451] [2024-06-03 19:59:17,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856594451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:17,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:17,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:17,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126407850] [2024-06-03 19:59:17,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:17,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:17,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:18,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:18,048 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) [2024-06-03 19:59:18,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:18,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:18,500 INFO L124 PetriNetUnfolderBase]: 565/1114 cut-off events. [2024-06-03 19:59:18,501 INFO L125 PetriNetUnfolderBase]: For 175544/175550 co-relation queries the response was YES. [2024-06-03 19:59:18,508 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. [2024-06-03 19:59:18,511 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 73 changer transitions 9/201 dead transitions. [2024-06-03 19:59:18,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 201 transitions, 2213 flow [2024-06-03 19:59:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:59:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:59:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 19:59:18,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 19:59:18,512 INFO L175 Difference]: Start difference. First operand has 263 places, 179 transitions, 1741 flow. Second operand 12 states and 137 transitions. [2024-06-03 19:59:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 201 transitions, 2213 flow [2024-06-03 19:59:18,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 201 transitions, 2043 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:18,833 INFO L231 Difference]: Finished difference. Result has 267 places, 176 transitions, 1698 flow [2024-06-03 19:59:18,834 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} [2024-06-03 19:59:18,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-03 19:59:18,834 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 176 transitions, 1698 flow [2024-06-03 19:59:18,834 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) [2024-06-03 19:59:18,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:18,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:18,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:59:18,835 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:18,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -678778820, now seen corresponding path program 6 times [2024-06-03 19:59:18,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:18,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171899271] [2024-06-03 19:59:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:18,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171899271] [2024-06-03 19:59:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171899271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069711708] [2024-06-03 19:59:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:19,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:19,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:19,632 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) [2024-06-03 19:59:19,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:19,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:19,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:20,046 INFO L124 PetriNetUnfolderBase]: 566/1125 cut-off events. [2024-06-03 19:59:20,046 INFO L125 PetriNetUnfolderBase]: For 196132/196138 co-relation queries the response was YES. [2024-06-03 19:59:20,054 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. [2024-06-03 19:59:20,056 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 70 changer transitions 11/201 dead transitions. [2024-06-03 19:59:20,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 201 transitions, 2362 flow [2024-06-03 19:59:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:59:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:59:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 19:59:20,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:59:20,057 INFO L175 Difference]: Start difference. First operand has 267 places, 176 transitions, 1698 flow. Second operand 12 states and 138 transitions. [2024-06-03 19:59:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 201 transitions, 2362 flow [2024-06-03 19:59:20,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 201 transitions, 2206 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:20,407 INFO L231 Difference]: Finished difference. Result has 265 places, 172 transitions, 1663 flow [2024-06-03 19:59:20,407 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} [2024-06-03 19:59:20,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-03 19:59:20,407 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 172 transitions, 1663 flow [2024-06-03 19:59:20,407 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) [2024-06-03 19:59:20,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:20,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:20,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:59:20,408 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:20,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1729911492, now seen corresponding path program 21 times [2024-06-03 19:59:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320192435] [2024-06-03 19:59:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:21,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:21,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320192435] [2024-06-03 19:59:21,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320192435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:21,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:21,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679982496] [2024-06-03 19:59:21,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:21,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:21,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:21,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:21,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:21,369 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) [2024-06-03 19:59:21,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:21,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:21,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:21,739 INFO L124 PetriNetUnfolderBase]: 524/1039 cut-off events. [2024-06-03 19:59:21,739 INFO L125 PetriNetUnfolderBase]: For 157804/157810 co-relation queries the response was YES. [2024-06-03 19:59:21,746 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. [2024-06-03 19:59:21,749 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 66 changer transitions 7/193 dead transitions. [2024-06-03 19:59:21,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 193 transitions, 2117 flow [2024-06-03 19:59:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:59:21,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 19:59:21,750 INFO L175 Difference]: Start difference. First operand has 265 places, 172 transitions, 1663 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:59:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 193 transitions, 2117 flow [2024-06-03 19:59:22,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 193 transitions, 1950 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-03 19:59:22,035 INFO L231 Difference]: Finished difference. Result has 260 places, 169 transitions, 1614 flow [2024-06-03 19:59:22,036 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} [2024-06-03 19:59:22,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 19:59:22,036 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 169 transitions, 1614 flow [2024-06-03 19:59:22,036 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) [2024-06-03 19:59:22,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:22,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:22,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:59:22,037 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:22,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1729634786, now seen corresponding path program 7 times [2024-06-03 19:59:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:22,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73321661] [2024-06-03 19:59:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73321661] [2024-06-03 19:59:22,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73321661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:22,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:22,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980482101] [2024-06-03 19:59:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:22,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:22,860 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) [2024-06-03 19:59:22,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:22,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:23,211 INFO L124 PetriNetUnfolderBase]: 527/1052 cut-off events. [2024-06-03 19:59:23,211 INFO L125 PetriNetUnfolderBase]: For 158738/158744 co-relation queries the response was YES. [2024-06-03 19:59:23,218 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. [2024-06-03 19:59:23,220 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 63 changer transitions 8/192 dead transitions. [2024-06-03 19:59:23,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 192 transitions, 2248 flow [2024-06-03 19:59:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:59:23,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 19:59:23,221 INFO L175 Difference]: Start difference. First operand has 260 places, 169 transitions, 1614 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:59:23,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 192 transitions, 2248 flow [2024-06-03 19:59:23,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 192 transitions, 2094 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:23,542 INFO L231 Difference]: Finished difference. Result has 259 places, 166 transitions, 1569 flow [2024-06-03 19:59:23,542 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} [2024-06-03 19:59:23,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 19:59:23,542 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 166 transitions, 1569 flow [2024-06-03 19:59:23,542 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) [2024-06-03 19:59:23,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:23,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:23,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:59:23,543 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:23,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1152351864, now seen corresponding path program 22 times [2024-06-03 19:59:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849061027] [2024-06-03 19:59:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:24,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:24,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849061027] [2024-06-03 19:59:24,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849061027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:24,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:24,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:24,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255980975] [2024-06-03 19:59:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:24,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:24,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:24,474 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) [2024-06-03 19:59:24,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:24,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:24,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:24,776 INFO L124 PetriNetUnfolderBase]: 512/1019 cut-off events. [2024-06-03 19:59:24,777 INFO L125 PetriNetUnfolderBase]: For 138047/138053 co-relation queries the response was YES. [2024-06-03 19:59:24,782 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. [2024-06-03 19:59:24,784 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2024-06-03 19:59:24,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 182 transitions, 2186 flow [2024-06-03 19:59:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-03 19:59:24,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-03 19:59:24,785 INFO L175 Difference]: Start difference. First operand has 259 places, 166 transitions, 1569 flow. Second operand 10 states and 113 transitions. [2024-06-03 19:59:24,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 182 transitions, 2186 flow [2024-06-03 19:59:25,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 182 transitions, 2050 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:59:25,091 INFO L231 Difference]: Finished difference. Result has 255 places, 167 transitions, 1612 flow [2024-06-03 19:59:25,092 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} [2024-06-03 19:59:25,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-03 19:59:25,092 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 167 transitions, 1612 flow [2024-06-03 19:59:25,092 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) [2024-06-03 19:59:25,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:25,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:25,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:59:25,093 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:25,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:25,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1351803384, now seen corresponding path program 23 times [2024-06-03 19:59:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:25,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727526790] [2024-06-03 19:59:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:25,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:25,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727526790] [2024-06-03 19:59:25,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727526790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900293611] [2024-06-03 19:59:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:25,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:25,926 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) [2024-06-03 19:59:25,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:25,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:25,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:26,224 INFO L124 PetriNetUnfolderBase]: 516/1027 cut-off events. [2024-06-03 19:59:26,225 INFO L125 PetriNetUnfolderBase]: For 132785/132791 co-relation queries the response was YES. [2024-06-03 19:59:26,231 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. [2024-06-03 19:59:26,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2024-06-03 19:59:26,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 183 transitions, 2055 flow [2024-06-03 19:59:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 19:59:26,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 19:59:26,234 INFO L175 Difference]: Start difference. First operand has 255 places, 167 transitions, 1612 flow. Second operand 10 states and 111 transitions. [2024-06-03 19:59:26,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 183 transitions, 2055 flow [2024-06-03 19:59:26,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 183 transitions, 1856 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:26,537 INFO L231 Difference]: Finished difference. Result has 257 places, 168 transitions, 1568 flow [2024-06-03 19:59:26,537 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} [2024-06-03 19:59:26,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 19:59:26,537 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 168 transitions, 1568 flow [2024-06-03 19:59:26,537 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) [2024-06-03 19:59:26,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:26,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:59:26,538 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:26,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1359155034, now seen corresponding path program 24 times [2024-06-03 19:59:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:26,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606619400] [2024-06-03 19:59:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:27,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606619400] [2024-06-03 19:59:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606619400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471188841] [2024-06-03 19:59:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:27,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:27,405 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) [2024-06-03 19:59:27,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:27,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:27,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:27,663 INFO L124 PetriNetUnfolderBase]: 520/1035 cut-off events. [2024-06-03 19:59:27,663 INFO L125 PetriNetUnfolderBase]: For 135577/135583 co-relation queries the response was YES. [2024-06-03 19:59:27,670 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. [2024-06-03 19:59:27,672 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 56 changer transitions 0/184 dead transitions. [2024-06-03 19:59:27,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 184 transitions, 2013 flow [2024-06-03 19:59:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 19:59:27,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 19:59:27,673 INFO L175 Difference]: Start difference. First operand has 257 places, 168 transitions, 1568 flow. Second operand 10 states and 111 transitions. [2024-06-03 19:59:27,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 184 transitions, 2013 flow [2024-06-03 19:59:27,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 184 transitions, 1859 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:59:27,977 INFO L231 Difference]: Finished difference. Result has 259 places, 169 transitions, 1571 flow [2024-06-03 19:59:27,977 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} [2024-06-03 19:59:27,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 19:59:27,977 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 169 transitions, 1571 flow [2024-06-03 19:59:27,978 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) [2024-06-03 19:59:27,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:27,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:27,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:59:27,978 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:27,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash -10705734, now seen corresponding path program 8 times [2024-06-03 19:59:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907068882] [2024-06-03 19:59:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907068882] [2024-06-03 19:59:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907068882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333085507] [2024-06-03 19:59:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:28,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:28,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:28,599 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) [2024-06-03 19:59:28,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:28,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:28,843 INFO L124 PetriNetUnfolderBase]: 536/1071 cut-off events. [2024-06-03 19:59:28,843 INFO L125 PetriNetUnfolderBase]: For 171538/171544 co-relation queries the response was YES. [2024-06-03 19:59:28,850 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. [2024-06-03 19:59:28,852 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 56 changer transitions 7/188 dead transitions. [2024-06-03 19:59:28,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 188 transitions, 2007 flow [2024-06-03 19:59:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 19:59:28,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 19:59:28,853 INFO L175 Difference]: Start difference. First operand has 259 places, 169 transitions, 1571 flow. Second operand 10 states and 117 transitions. [2024-06-03 19:59:28,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 188 transitions, 2007 flow [2024-06-03 19:59:29,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 188 transitions, 1851 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-03 19:59:29,152 INFO L231 Difference]: Finished difference. Result has 260 places, 166 transitions, 1511 flow [2024-06-03 19:59:29,152 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} [2024-06-03 19:59:29,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 19:59:29,152 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 166 transitions, 1511 flow [2024-06-03 19:59:29,152 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) [2024-06-03 19:59:29,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:29,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:29,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:59:29,153 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:29,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash -10696434, now seen corresponding path program 9 times [2024-06-03 19:59:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:29,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717550260] [2024-06-03 19:59:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:29,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717550260] [2024-06-03 19:59:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717550260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784845846] [2024-06-03 19:59:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:29,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:29,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:29,951 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) [2024-06-03 19:59:29,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:29,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:29,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:30,231 INFO L124 PetriNetUnfolderBase]: 525/1058 cut-off events. [2024-06-03 19:59:30,231 INFO L125 PetriNetUnfolderBase]: For 174370/174376 co-relation queries the response was YES. [2024-06-03 19:59:30,238 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. [2024-06-03 19:59:30,241 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 53 changer transitions 8/185 dead transitions. [2024-06-03 19:59:30,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 185 transitions, 2115 flow [2024-06-03 19:59:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 19:59:30,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 19:59:30,242 INFO L175 Difference]: Start difference. First operand has 260 places, 166 transitions, 1511 flow. Second operand 10 states and 115 transitions. [2024-06-03 19:59:30,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 185 transitions, 2115 flow [2024-06-03 19:59:30,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 185 transitions, 1961 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:30,529 INFO L231 Difference]: Finished difference. Result has 258 places, 162 transitions, 1439 flow [2024-06-03 19:59:30,529 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} [2024-06-03 19:59:30,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 19:59:30,529 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 162 transitions, 1439 flow [2024-06-03 19:59:30,529 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) [2024-06-03 19:59:30,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:30,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:59:30,530 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:30,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -18330370, now seen corresponding path program 25 times [2024-06-03 19:59:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3634458] [2024-06-03 19:59:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:31,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3634458] [2024-06-03 19:59:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3634458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:31,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:31,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481646769] [2024-06-03 19:59:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:31,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:31,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:31,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:31,533 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) [2024-06-03 19:59:31,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:31,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:31,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:31,827 INFO L124 PetriNetUnfolderBase]: 503/1012 cut-off events. [2024-06-03 19:59:31,827 INFO L125 PetriNetUnfolderBase]: For 139989/139995 co-relation queries the response was YES. [2024-06-03 19:59:31,833 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. [2024-06-03 19:59:31,836 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 56 changer transitions 0/176 dead transitions. [2024-06-03 19:59:31,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 176 transitions, 1823 flow [2024-06-03 19:59:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:59:31,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 19:59:31,837 INFO L175 Difference]: Start difference. First operand has 258 places, 162 transitions, 1439 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:59:31,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 176 transitions, 1823 flow [2024-06-03 19:59:32,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 176 transitions, 1651 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-03 19:59:32,108 INFO L231 Difference]: Finished difference. Result has 254 places, 162 transitions, 1383 flow [2024-06-03 19:59:32,108 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} [2024-06-03 19:59:32,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 19:59:32,109 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 162 transitions, 1383 flow [2024-06-03 19:59:32,109 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) [2024-06-03 19:59:32,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:32,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:59:32,109 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:32,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 37645743, now seen corresponding path program 1 times [2024-06-03 19:59:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188232786] [2024-06-03 19:59:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:33,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188232786] [2024-06-03 19:59:33,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188232786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:33,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:33,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:33,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195548563] [2024-06-03 19:59:33,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:33,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:33,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:33,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:33,180 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) [2024-06-03 19:59:33,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:33,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:33,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:33,448 INFO L124 PetriNetUnfolderBase]: 511/1032 cut-off events. [2024-06-03 19:59:33,448 INFO L125 PetriNetUnfolderBase]: For 143556/143562 co-relation queries the response was YES. [2024-06-03 19:59:33,454 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. [2024-06-03 19:59:33,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 12 changer transitions 32/182 dead transitions. [2024-06-03 19:59:33,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 182 transitions, 1789 flow [2024-06-03 19:59:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-03 19:59:33,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-03 19:59:33,457 INFO L175 Difference]: Start difference. First operand has 254 places, 162 transitions, 1383 flow. Second operand 11 states and 109 transitions. [2024-06-03 19:59:33,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 182 transitions, 1789 flow [2024-06-03 19:59:33,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 182 transitions, 1561 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-03 19:59:33,716 INFO L231 Difference]: Finished difference. Result has 254 places, 146 transitions, 1030 flow [2024-06-03 19:59:33,716 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} [2024-06-03 19:59:33,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 19:59:33,717 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 146 transitions, 1030 flow [2024-06-03 19:59:33,717 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) [2024-06-03 19:59:33,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:33,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:59:33,717 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:33,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1947187465, now seen corresponding path program 2 times [2024-06-03 19:59:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855104943] [2024-06-03 19:59:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:34,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:34,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855104943] [2024-06-03 19:59:34,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855104943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:34,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:34,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:34,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050996946] [2024-06-03 19:59:34,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:34,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:34,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:34,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:34,575 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) [2024-06-03 19:59:34,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:34,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:34,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:34,788 INFO L124 PetriNetUnfolderBase]: 451/918 cut-off events. [2024-06-03 19:59:34,788 INFO L125 PetriNetUnfolderBase]: For 146170/146176 co-relation queries the response was YES. [2024-06-03 19:59:34,794 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. [2024-06-03 19:59:34,795 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 57 changer transitions 22/160 dead transitions. [2024-06-03 19:59:34,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 160 transitions, 1376 flow [2024-06-03 19:59:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-03 19:59:34,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-03 19:59:34,797 INFO L175 Difference]: Start difference. First operand has 254 places, 146 transitions, 1030 flow. Second operand 10 states and 95 transitions. [2024-06-03 19:59:34,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 160 transitions, 1376 flow [2024-06-03 19:59:35,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 160 transitions, 1318 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-03 19:59:35,023 INFO L231 Difference]: Finished difference. Result has 234 places, 134 transitions, 1024 flow [2024-06-03 19:59:35,023 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} [2024-06-03 19:59:35,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 19:59:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 134 transitions, 1024 flow [2024-06-03 19:59:35,023 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) [2024-06-03 19:59:35,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:35,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:35,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:59:35,024 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:35,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1025431259, now seen corresponding path program 3 times [2024-06-03 19:59:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:35,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156037241] [2024-06-03 19:59:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:35,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156037241] [2024-06-03 19:59:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156037241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:35,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:59:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346242228] [2024-06-03 19:59:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:35,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:59:35,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:59:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:59:35,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:35,951 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) [2024-06-03 19:59:35,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:35,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:35,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:36,177 INFO L124 PetriNetUnfolderBase]: 409/844 cut-off events. [2024-06-03 19:59:36,177 INFO L125 PetriNetUnfolderBase]: For 130468/130474 co-relation queries the response was YES. [2024-06-03 19:59:36,184 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. [2024-06-03 19:59:36,186 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 51 changer transitions 19/148 dead transitions. [2024-06-03 19:59:36,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 148 transitions, 1350 flow [2024-06-03 19:59:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 19:59:36,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-03 19:59:36,187 INFO L175 Difference]: Start difference. First operand has 234 places, 134 transitions, 1024 flow. Second operand 10 states and 102 transitions. [2024-06-03 19:59:36,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 148 transitions, 1350 flow [2024-06-03 19:59:36,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 148 transitions, 1218 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-03 19:59:36,370 INFO L231 Difference]: Finished difference. Result has 218 places, 121 transitions, 934 flow [2024-06-03 19:59:36,370 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} [2024-06-03 19:59:36,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-03 19:59:36,370 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 121 transitions, 934 flow [2024-06-03 19:59:36,370 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) [2024-06-03 19:59:36,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:36,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:36,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:59:36,371 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:36,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash 717053395, now seen corresponding path program 4 times [2024-06-03 19:59:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251634678] [2024-06-03 19:59:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:37,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251634678] [2024-06-03 19:59:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251634678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:37,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:37,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738519625] [2024-06-03 19:59:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:37,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:37,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:37,371 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) [2024-06-03 19:59:37,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:37,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:37,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:37,580 INFO L124 PetriNetUnfolderBase]: 352/737 cut-off events. [2024-06-03 19:59:37,580 INFO L125 PetriNetUnfolderBase]: For 89367/89373 co-relation queries the response was YES. [2024-06-03 19:59:37,584 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. [2024-06-03 19:59:37,585 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 37 changer transitions 30/135 dead transitions. [2024-06-03 19:59:37,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 135 transitions, 1236 flow [2024-06-03 19:59:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 19:59:37,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-03 19:59:37,586 INFO L175 Difference]: Start difference. First operand has 218 places, 121 transitions, 934 flow. Second operand 10 states and 102 transitions. [2024-06-03 19:59:37,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 135 transitions, 1236 flow [2024-06-03 19:59:37,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 135 transitions, 1116 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-03 19:59:37,713 INFO L231 Difference]: Finished difference. Result has 202 places, 99 transitions, 765 flow [2024-06-03 19:59:37,714 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} [2024-06-03 19:59:37,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-03 19:59:37,714 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 99 transitions, 765 flow [2024-06-03 19:59:37,714 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) [2024-06-03 19:59:37,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:37,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:37,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:59:37,715 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:37,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1020962609, now seen corresponding path program 5 times [2024-06-03 19:59:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:37,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327598760] [2024-06-03 19:59:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:38,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:38,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327598760] [2024-06-03 19:59:38,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327598760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:38,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:38,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:38,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99502030] [2024-06-03 19:59:38,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:38,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:38,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:38,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:38,688 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) [2024-06-03 19:59:38,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:38,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:38,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:38,908 INFO L124 PetriNetUnfolderBase]: 286/611 cut-off events. [2024-06-03 19:59:38,908 INFO L125 PetriNetUnfolderBase]: For 71781/71787 co-relation queries the response was YES. [2024-06-03 19:59:38,910 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. [2024-06-03 19:59:38,911 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 17 changer transitions 50/113 dead transitions. [2024-06-03 19:59:38,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 113 transitions, 1019 flow [2024-06-03 19:59:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-03 19:59:38,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-03 19:59:38,912 INFO L175 Difference]: Start difference. First operand has 202 places, 99 transitions, 765 flow. Second operand 10 states and 99 transitions. [2024-06-03 19:59:38,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 113 transitions, 1019 flow [2024-06-03 19:59:38,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 113 transitions, 915 flow, removed 15 selfloop flow, removed 22 redundant places. [2024-06-03 19:59:38,987 INFO L231 Difference]: Finished difference. Result has 172 places, 60 transitions, 415 flow [2024-06-03 19:59:38,987 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} [2024-06-03 19:59:38,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-03 19:59:38,987 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 60 transitions, 415 flow [2024-06-03 19:59:38,988 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) [2024-06-03 19:59:38,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:38,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:38,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:59:38,988 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:38,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1843511991, now seen corresponding path program 6 times [2024-06-03 19:59:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:38,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270530305] [2024-06-03 19:59:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:39,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:39,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270530305] [2024-06-03 19:59:39,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270530305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:39,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:39,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649151915] [2024-06-03 19:59:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:39,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:39,979 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) [2024-06-03 19:59:39,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:39,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:39,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:40,211 INFO L124 PetriNetUnfolderBase]: 171/367 cut-off events. [2024-06-03 19:59:40,211 INFO L125 PetriNetUnfolderBase]: For 36221/36221 co-relation queries the response was YES. [2024-06-03 19:59:40,212 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. [2024-06-03 19:59:40,213 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 15 changer transitions 18/73 dead transitions. [2024-06-03 19:59:40,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 73 transitions, 589 flow [2024-06-03 19:59:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-03 19:59:40,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-03 19:59:40,214 INFO L175 Difference]: Start difference. First operand has 172 places, 60 transitions, 415 flow. Second operand 10 states and 95 transitions. [2024-06-03 19:59:40,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 73 transitions, 589 flow [2024-06-03 19:59:40,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 73 transitions, 487 flow, removed 24 selfloop flow, removed 32 redundant places. [2024-06-03 19:59:40,242 INFO L231 Difference]: Finished difference. Result has 120 places, 50 transitions, 302 flow [2024-06-03 19:59:40,242 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} [2024-06-03 19:59:40,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-03 19:59:40,242 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 50 transitions, 302 flow [2024-06-03 19:59:40,243 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) [2024-06-03 19:59:40,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:40,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:40,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:59:40,243 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:40,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:40,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1367639445, now seen corresponding path program 7 times [2024-06-03 19:59:40,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414484456] [2024-06-03 19:59:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:41,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414484456] [2024-06-03 19:59:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414484456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:41,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:41,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433481447] [2024-06-03 19:59:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:41,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:41,446 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) [2024-06-03 19:59:41,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:41,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:41,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:41,655 INFO L124 PetriNetUnfolderBase]: 142/312 cut-off events. [2024-06-03 19:59:41,656 INFO L125 PetriNetUnfolderBase]: For 17258/17258 co-relation queries the response was YES. [2024-06-03 19:59:41,657 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. [2024-06-03 19:59:41,657 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 31 selfloop transitions, 17 changer transitions 14/64 dead transitions. [2024-06-03 19:59:41,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 64 transitions, 456 flow [2024-06-03 19:59:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-03 19:59:41,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2024-06-03 19:59:41,658 INFO L175 Difference]: Start difference. First operand has 120 places, 50 transitions, 302 flow. Second operand 11 states and 100 transitions. [2024-06-03 19:59:41,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 64 transitions, 456 flow [2024-06-03 19:59:41,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 64 transitions, 410 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-03 19:59:41,671 INFO L231 Difference]: Finished difference. Result has 106 places, 46 transitions, 275 flow [2024-06-03 19:59:41,671 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} [2024-06-03 19:59:41,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-03 19:59:41,671 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 46 transitions, 275 flow [2024-06-03 19:59:41,671 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) [2024-06-03 19:59:41,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:41,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:59:41,672 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:41,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1046565433, now seen corresponding path program 8 times [2024-06-03 19:59:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:41,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659931500] [2024-06-03 19:59:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:42,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:42,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659931500] [2024-06-03 19:59:42,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659931500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:42,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:42,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:42,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253077741] [2024-06-03 19:59:42,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:42,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:42,802 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) [2024-06-03 19:59:42,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:42,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:42,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:42,920 INFO L124 PetriNetUnfolderBase]: 128/286 cut-off events. [2024-06-03 19:59:42,920 INFO L125 PetriNetUnfolderBase]: For 11482/11482 co-relation queries the response was YES. [2024-06-03 19:59:42,921 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. [2024-06-03 19:59:42,921 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 31 selfloop transitions, 11 changer transitions 15/59 dead transitions. [2024-06-03 19:59:42,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 59 transitions, 417 flow [2024-06-03 19:59:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-03 19:59:42,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.290625 [2024-06-03 19:59:42,922 INFO L175 Difference]: Start difference. First operand has 106 places, 46 transitions, 275 flow. Second operand 10 states and 93 transitions. [2024-06-03 19:59:42,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 59 transitions, 417 flow [2024-06-03 19:59:42,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 59 transitions, 375 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:59:42,930 INFO L231 Difference]: Finished difference. Result has 99 places, 41 transitions, 235 flow [2024-06-03 19:59:42,930 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} [2024-06-03 19:59:42,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-03 19:59:42,931 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 41 transitions, 235 flow [2024-06-03 19:59:42,931 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) [2024-06-03 19:59:42,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:42,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:42,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:59:42,931 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:42,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1363170795, now seen corresponding path program 9 times [2024-06-03 19:59:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:42,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076995495] [2024-06-03 19:59:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:43,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076995495] [2024-06-03 19:59:43,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076995495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:43,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:43,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:59:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748093456] [2024-06-03 19:59:43,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:59:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:59:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:59:43,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:43,904 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) [2024-06-03 19:59:43,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:43,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:43,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:44,005 INFO L124 PetriNetUnfolderBase]: 115/259 cut-off events. [2024-06-03 19:59:44,005 INFO L125 PetriNetUnfolderBase]: For 9356/9356 co-relation queries the response was YES. [2024-06-03 19:59:44,006 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. [2024-06-03 19:59:44,006 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 25 selfloop transitions, 13 changer transitions 14/54 dead transitions. [2024-06-03 19:59:44,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 54 transitions, 367 flow [2024-06-03 19:59:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:59:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:59:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-06-03 19:59:44,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28125 [2024-06-03 19:59:44,007 INFO L175 Difference]: Start difference. First operand has 99 places, 41 transitions, 235 flow. Second operand 10 states and 90 transitions. [2024-06-03 19:59:44,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 54 transitions, 367 flow [2024-06-03 19:59:44,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 54 transitions, 335 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:59:44,014 INFO L231 Difference]: Finished difference. Result has 91 places, 35 transitions, 204 flow [2024-06-03 19:59:44,014 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} [2024-06-03 19:59:44,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 19:59:44,015 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 35 transitions, 204 flow [2024-06-03 19:59:44,015 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) [2024-06-03 19:59:44,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:44,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:44,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:59:44,015 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:44,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash -155991701, now seen corresponding path program 10 times [2024-06-03 19:59:44,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:44,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578093726] [2024-06-03 19:59:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:44,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578093726] [2024-06-03 19:59:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578093726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:45,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:45,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:59:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268621646] [2024-06-03 19:59:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:45,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:59:45,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:59:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:59:45,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:45,354 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) [2024-06-03 19:59:45,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:45,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:45,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:45,539 INFO L124 PetriNetUnfolderBase]: 98/224 cut-off events. [2024-06-03 19:59:45,539 INFO L125 PetriNetUnfolderBase]: For 6870/6870 co-relation queries the response was YES. [2024-06-03 19:59:45,540 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. [2024-06-03 19:59:45,540 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 25 selfloop transitions, 11 changer transitions 12/50 dead transitions. [2024-06-03 19:59:45,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 50 transitions, 332 flow [2024-06-03 19:59:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:59:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:59:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-03 19:59:45,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2682291666666667 [2024-06-03 19:59:45,541 INFO L175 Difference]: Start difference. First operand has 91 places, 35 transitions, 204 flow. Second operand 12 states and 103 transitions. [2024-06-03 19:59:45,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 50 transitions, 332 flow [2024-06-03 19:59:45,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 50 transitions, 294 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:45,546 INFO L231 Difference]: Finished difference. Result has 83 places, 31 transitions, 171 flow [2024-06-03 19:59:45,546 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} [2024-06-03 19:59:45,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-03 19:59:45,547 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 31 transitions, 171 flow [2024-06-03 19:59:45,547 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) [2024-06-03 19:59:45,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:45,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:45,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:59:45,547 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:45,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1052923575, now seen corresponding path program 11 times [2024-06-03 19:59:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207554531] [2024-06-03 19:59:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207554531] [2024-06-03 19:59:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207554531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:46,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961248785] [2024-06-03 19:59:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:46,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:46,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:46,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:46,663 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) [2024-06-03 19:59:46,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:46,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:46,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:46,840 INFO L124 PetriNetUnfolderBase]: 74/172 cut-off events. [2024-06-03 19:59:46,841 INFO L125 PetriNetUnfolderBase]: For 3230/3230 co-relation queries the response was YES. [2024-06-03 19:59:46,841 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. [2024-06-03 19:59:46,842 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 20 selfloop transitions, 8 changer transitions 14/44 dead transitions. [2024-06-03 19:59:46,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 44 transitions, 283 flow [2024-06-03 19:59:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-03 19:59:46,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-06-03 19:59:46,843 INFO L175 Difference]: Start difference. First operand has 83 places, 31 transitions, 171 flow. Second operand 11 states and 96 transitions. [2024-06-03 19:59:46,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 44 transitions, 283 flow [2024-06-03 19:59:46,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 44 transitions, 253 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:59:46,845 INFO L231 Difference]: Finished difference. Result has 76 places, 26 transitions, 134 flow [2024-06-03 19:59:46,846 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} [2024-06-03 19:59:46,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-03 19:59:46,846 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 26 transitions, 134 flow [2024-06-03 19:59:46,846 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) [2024-06-03 19:59:46,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:46,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:59:46,848 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:46,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash -383892851, now seen corresponding path program 12 times [2024-06-03 19:59:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:46,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501053407] [2024-06-03 19:59:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501053407] [2024-06-03 19:59:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501053407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:47,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 19:59:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399151188] [2024-06-03 19:59:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:59:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:59:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:59:48,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:48,022 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) [2024-06-03 19:59:48,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:48,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:48,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:48,213 INFO L124 PetriNetUnfolderBase]: 49/117 cut-off events. [2024-06-03 19:59:48,213 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2024-06-03 19:59:48,213 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. [2024-06-03 19:59:48,214 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 8 changer transitions 11/40 dead transitions. [2024-06-03 19:59:48,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 40 transitions, 240 flow [2024-06-03 19:59:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:59:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:59:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 99 transitions. [2024-06-03 19:59:48,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2578125 [2024-06-03 19:59:48,215 INFO L175 Difference]: Start difference. First operand has 76 places, 26 transitions, 134 flow. Second operand 12 states and 99 transitions. [2024-06-03 19:59:48,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 40 transitions, 240 flow [2024-06-03 19:59:48,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 40 transitions, 214 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:59:48,216 INFO L231 Difference]: Finished difference. Result has 67 places, 23 transitions, 112 flow [2024-06-03 19:59:48,216 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} [2024-06-03 19:59:48,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-03 19:59:48,218 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 23 transitions, 112 flow [2024-06-03 19:59:48,218 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) [2024-06-03 19:59:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:59:48,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:59:48,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:59:48,220 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:59:48,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:59:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -384065831, now seen corresponding path program 13 times [2024-06-03 19:59:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:59:48,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947665773] [2024-06-03 19:59:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:59:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:59:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:59:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:59:49,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:59:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947665773] [2024-06-03 19:59:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947665773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:59:49,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:59:49,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:59:49,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258903982] [2024-06-03 19:59:49,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:59:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:59:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:59:49,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:59:49,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:59:49,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-03 19:59:49,329 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) [2024-06-03 19:59:49,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:59:49,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-03 19:59:49,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:59:49,482 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2024-06-03 19:59:49,482 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-06-03 19:59:49,482 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. [2024-06-03 19:59:49,482 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 19:59:49,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 31 transitions, 162 flow [2024-06-03 19:59:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:59:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:59:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-03 19:59:49,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24147727272727273 [2024-06-03 19:59:49,483 INFO L175 Difference]: Start difference. First operand has 67 places, 23 transitions, 112 flow. Second operand 11 states and 85 transitions. [2024-06-03 19:59:49,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 31 transitions, 162 flow [2024-06-03 19:59:49,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-03 19:59:49,483 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2024-06-03 19:59:49,483 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} [2024-06-03 19:59:49,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-03 19:59:49,484 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2024-06-03 19:59:49,484 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) [2024-06-03 19:59:49,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 19:59:49,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 19:59:49,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 19:59:49,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 19:59:49,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:59:49,487 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] [2024-06-03 19:59:49,489 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:59:49,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:59:49,491 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 19:59:49,491 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 19:59:49,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:59:49 BasicIcfg [2024-06-03 19:59:49,493 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:59:49,493 INFO L158 Benchmark]: Toolchain (without parser) took 147191.25ms. Allocated memory was 155.2MB in the beginning and 931.1MB in the end (delta: 775.9MB). Free memory was 125.4MB in the beginning and 759.4MB in the end (delta: -634.1MB). Peak memory consumption was 141.5MB. Max. memory is 16.1GB. [2024-06-03 19:59:49,493 INFO L158 Benchmark]: Witness Parser took 0.48ms. Allocated memory is still 104.9MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:59:49,493 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 155.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:59:49,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.32ms. Allocated memory is still 155.2MB. Free memory was 125.4MB in the beginning and 92.5MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-03 19:59:49,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.68ms. Allocated memory is still 155.2MB. Free memory was 92.5MB in the beginning and 89.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 19:59:49,494 INFO L158 Benchmark]: Boogie Preprocessor took 67.51ms. Allocated memory is still 155.2MB. Free memory was 89.3MB in the beginning and 86.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 19:59:49,494 INFO L158 Benchmark]: RCFGBuilder took 612.41ms. Allocated memory is still 155.2MB. Free memory was 85.5MB in the beginning and 114.3MB in the end (delta: -28.8MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-03 19:59:49,494 INFO L158 Benchmark]: TraceAbstraction took 145907.27ms. Allocated memory was 155.2MB in the beginning and 931.1MB in the end (delta: 775.9MB). Free memory was 113.0MB in the beginning and 759.4MB in the end (delta: -646.4MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. [2024-06-03 19:59:49,495 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 0.48ms. Allocated memory is still 104.9MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.08ms. Allocated memory is still 155.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.32ms. Allocated memory is still 155.2MB. Free memory was 125.4MB in the beginning and 92.5MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.68ms. Allocated memory is still 155.2MB. Free memory was 92.5MB in the beginning and 89.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.51ms. Allocated memory is still 155.2MB. Free memory was 89.3MB in the beginning and 86.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 612.41ms. Allocated memory is still 155.2MB. Free memory was 85.5MB in the beginning and 114.3MB in the end (delta: -28.8MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 145907.27ms. Allocated memory was 155.2MB in the beginning and 931.1MB in the end (delta: 775.9MB). Free memory was 113.0MB in the beginning and 759.4MB in the end (delta: -646.4MB). Peak memory consumption was 129.3MB. 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: 145.8s, OverallIterations: 129, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 51.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7471 SdHoareTripleChecker+Valid, 22.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6366 mSDsluCounter, 5770 SdHoareTripleChecker+Invalid, 19.5s 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1309 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2802 ImplicationChecksByTransitivity, 31.6s 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 92.5s 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! [2024-06-03 19:59:49,539 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