./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:02:53,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:02:53,533 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:02:53,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:02:53,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:02:53,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:02:53,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:02:53,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:02:53,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:02:53,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:02:53,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:02:53,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:02:53,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:02:53,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:02:53,588 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:02:53,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:02:53,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:02:53,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:02:53,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:02:53,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:02:53,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:02:53,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:02:53,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:02:53,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:02:53,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:02:53,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:02:53,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:02:53,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:02:53,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:02:53,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:02:53,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:02:53,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:02:53,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:02:53,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:02:53,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:02:53,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:02:53,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:02:53,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:02:53,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:02:53,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:02:53,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:02:53,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:02:53,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:02:53,596 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:02:53,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:02:53,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:02:53,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:02:53,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:02:53,826 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:02:53,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:02:54,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:02:55,062 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:02:55,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:02:55,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2481a50/3251504c528f4b1e96b7d7f0c62fbcb3/FLAGe587e13ee [2024-06-14 13:02:55,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2481a50/3251504c528f4b1e96b7d7f0c62fbcb3 [2024-06-14 13:02:55,092 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:02:55,093 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:02:55,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 13:02:55,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:02:55,228 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:02:55,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:02:55,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:02:55,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:02:55,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:02:55" (1/2) ... [2024-06-14 13:02:55,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c932c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:02:55, skipping insertion in model container [2024-06-14 13:02:55,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:02:55" (1/2) ... [2024-06-14 13:02:55,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f15896f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:02:55, skipping insertion in model container [2024-06-14 13:02:55,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:02:55" (2/2) ... [2024-06-14 13:02:55,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c932c6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55, skipping insertion in model container [2024-06-14 13:02:55,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:02:55" (2/2) ... [2024-06-14 13:02:55,239 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:02:55,287 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:02:55,289 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) [2024-06-14 13:02:55,289 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] (((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) [2024-06-14 13:02:55,290 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:02:55,290 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-14 13:02:55,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:02:55,655 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:02:55,681 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:02:55,786 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:02:55,825 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:02:55,826 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55 WrapperNode [2024-06-14 13:02:55,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:02:55,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:02:55,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:02:55,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:02:55,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,890 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 131 [2024-06-14 13:02:55,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:02:55,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:02:55,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:02:55,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:02:55,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,933 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 13:02:55,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:02:55,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:02:55,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:02:55,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:02:55,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (1/1) ... [2024-06-14 13:02:55,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:02:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:02:56,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 13:02:56,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 13:02:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:02:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:02:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:02:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:02:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:02:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:02:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:02:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:02:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:02:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:02:56,034 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:02:56,161 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:02:56,163 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:02:56,406 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:02:56,406 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:02:56,543 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:02:56,544 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:02:56,544 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:02:56 BoogieIcfgContainer [2024-06-14 13:02:56,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:02:56,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:02:56,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:02:56,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:02:56,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:02:55" (1/4) ... [2024-06-14 13:02:56,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d25b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:02:56, skipping insertion in model container [2024-06-14 13:02:56,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:02:55" (2/4) ... [2024-06-14 13:02:56,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d25b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:02:56, skipping insertion in model container [2024-06-14 13:02:56,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:02:55" (3/4) ... [2024-06-14 13:02:56,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d25b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:02:56, skipping insertion in model container [2024-06-14 13:02:56,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:02:56" (4/4) ... [2024-06-14 13:02:56,551 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:02:56,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:02:56,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:02:56,564 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:02:56,609 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:02:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 13:02:56,660 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-14 13:02:56,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:02:56,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:02:56,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 13:02:56,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-14 13:02:56,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:02:56,675 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;@5e83b2d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:02:56,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:02:56,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:02:56,678 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:02:56,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:02:56,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:56,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:02:56,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:02:56,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1451147604, now seen corresponding path program 1 times [2024-06-14 13:02:56,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:56,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513063000] [2024-06-14 13:02:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:57,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513063000] [2024-06-14 13:02:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513063000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:57,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:57,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:02:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79416396] [2024-06-14 13:02:57,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:02:57,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:02:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:02:57,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 13:02:57,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:57,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:57,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 13:02:57,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:57,780 INFO L124 PetriNetUnfolderBase]: 135/253 cut-off events. [2024-06-14 13:02:57,780 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 13:02:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 253 events. 135/253 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 870 event pairs, 79 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 507. Up to 243 conditions per place. [2024-06-14 13:02:57,784 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-14 13:02:57,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 115 flow [2024-06-14 13:02:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:02:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:02:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-14 13:02:57,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-14 13:02:57,793 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 48 transitions. [2024-06-14 13:02:57,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 115 flow [2024-06-14 13:02:57,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:02:57,803 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-14 13:02:57,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-14 13:02:57,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-14 13:02:57,807 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-14 13:02:57,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:57,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:57,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:57,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:02:57,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:02:57,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1311490701, now seen corresponding path program 1 times [2024-06-14 13:02:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:57,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916812172] [2024-06-14 13:02:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:57,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:58,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916812172] [2024-06-14 13:02:58,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916812172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:58,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:58,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:02:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172657777] [2024-06-14 13:02:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:58,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:02:58,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:02:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:02:58,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 13:02:58,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:58,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:58,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 13:02:58,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:58,329 INFO L124 PetriNetUnfolderBase]: 132/248 cut-off events. [2024-06-14 13:02:58,329 INFO L125 PetriNetUnfolderBase]: For 50/53 co-relation queries the response was YES. [2024-06-14 13:02:58,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 248 events. 132/248 cut-off events. For 50/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 840 event pairs, 64 based on Foata normal form. 4/251 useless extension candidates. Maximal degree in co-relation 569. Up to 229 conditions per place. [2024-06-14 13:02:58,331 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-14 13:02:58,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 157 flow [2024-06-14 13:02:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:02:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:02:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-14 13:02:58,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-14 13:02:58,332 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-14 13:02:58,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 157 flow [2024-06-14 13:02:58,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:02:58,333 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-14 13:02:58,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-14 13:02:58,334 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-14 13:02:58,334 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-14 13:02:58,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:58,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:58,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:58,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:02:58,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:02:58,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2001504973, now seen corresponding path program 1 times [2024-06-14 13:02:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:58,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839918433] [2024-06-14 13:02:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:58,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839918433] [2024-06-14 13:02:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839918433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:02:58,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788306378] [2024-06-14 13:02:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:58,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:02:58,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:02:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:02:58,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:02:58,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:58,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:58,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:02:58,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:58,828 INFO L124 PetriNetUnfolderBase]: 152/281 cut-off events. [2024-06-14 13:02:58,828 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-06-14 13:02:58,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 281 events. 152/281 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 963 event pairs, 59 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 718. Up to 254 conditions per place. [2024-06-14 13:02:58,830 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-14 13:02:58,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 227 flow [2024-06-14 13:02:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:02:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:02:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-06-14 13:02:58,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 13:02:58,832 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 70 transitions. [2024-06-14 13:02:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 227 flow [2024-06-14 13:02:58,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 216 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 13:02:58,834 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 137 flow [2024-06-14 13:02:58,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-14 13:02:58,835 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-14 13:02:58,835 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 137 flow [2024-06-14 13:02:58,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:58,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:58,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:02:58,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:02:58,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1917110894, now seen corresponding path program 1 times [2024-06-14 13:02:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10736263] [2024-06-14 13:02:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:02:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:02:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:02:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10736263] [2024-06-14 13:02:59,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10736263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:02:59,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:02:59,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:02:59,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989833153] [2024-06-14 13:02:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:02:59,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:02:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:02:59,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:02:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:02:59,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:02:59,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:59,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:02:59,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:02:59,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:02:59,562 INFO L124 PetriNetUnfolderBase]: 149/276 cut-off events. [2024-06-14 13:02:59,563 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-06-14 13:02:59,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 276 events. 149/276 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 929 event pairs, 41 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 792. Up to 240 conditions per place. [2024-06-14 13:02:59,566 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 9 changer transitions 0/50 dead transitions. [2024-06-14 13:02:59,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 279 flow [2024-06-14 13:02:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:02:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:02:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-14 13:02:59,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 13:02:59,570 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 137 flow. Second operand 6 states and 82 transitions. [2024-06-14 13:02:59,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 279 flow [2024-06-14 13:02:59,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-14 13:02:59,573 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 172 flow [2024-06-14 13:02:59,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-06-14 13:02:59,574 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-14 13:02:59,574 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 172 flow [2024-06-14 13:02:59,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:02:59,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:02:59,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:02:59,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:02:59,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:02:59,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:02:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1555601532, now seen corresponding path program 1 times [2024-06-14 13:02:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:02:59,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828546433] [2024-06-14 13:02:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:02:59,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:02:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828546433] [2024-06-14 13:03:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828546433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:00,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:03:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917874990] [2024-06-14 13:03:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:03:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:03:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:03:00,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:03:00,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:00,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:00,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:03:00,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:00,357 INFO L124 PetriNetUnfolderBase]: 145/268 cut-off events. [2024-06-14 13:03:00,357 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-06-14 13:03:00,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 268 events. 145/268 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 884 event pairs, 22 based on Foata normal form. 4/271 useless extension candidates. Maximal degree in co-relation 844. Up to 214 conditions per place. [2024-06-14 13:03:00,359 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-14 13:03:00,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 304 flow [2024-06-14 13:03:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 13:03:00,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-14 13:03:00,361 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 172 flow. Second operand 7 states and 89 transitions. [2024-06-14 13:03:00,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 304 flow [2024-06-14 13:03:00,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 287 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:00,363 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 169 flow [2024-06-14 13:03:00,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-06-14 13:03:00,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-14 13:03:00,364 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 169 flow [2024-06-14 13:03:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:00,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:00,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:00,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:03:00,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:00,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1606489710, now seen corresponding path program 1 times [2024-06-14 13:03:00,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:00,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374889332] [2024-06-14 13:03:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:00,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374889332] [2024-06-14 13:03:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374889332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:00,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:00,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:03:00,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984492479] [2024-06-14 13:03:00,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:03:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:03:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:03:00,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:00,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:00,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:00,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:00,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:01,023 INFO L124 PetriNetUnfolderBase]: 141/262 cut-off events. [2024-06-14 13:03:01,023 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-06-14 13:03:01,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 262 events. 141/262 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 854 event pairs, 36 based on Foata normal form. 2/263 useless extension candidates. Maximal degree in co-relation 859. Up to 244 conditions per place. [2024-06-14 13:03:01,025 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 32 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-14 13:03:01,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 267 flow [2024-06-14 13:03:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:03:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:03:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-14 13:03:01,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-14 13:03:01,026 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 169 flow. Second operand 5 states and 56 transitions. [2024-06-14 13:03:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 267 flow [2024-06-14 13:03:01,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 240 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:01,028 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 171 flow [2024-06-14 13:03:01,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-14 13:03:01,029 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-14 13:03:01,029 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 171 flow [2024-06-14 13:03:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:01,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:01,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:03:01,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:01,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash -808955857, now seen corresponding path program 1 times [2024-06-14 13:03:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203083858] [2024-06-14 13:03:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203083858] [2024-06-14 13:03:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203083858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:01,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:01,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539353267] [2024-06-14 13:03:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:01,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:01,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:01,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:01,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 171 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:01,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:01,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:01,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:01,762 INFO L124 PetriNetUnfolderBase]: 144/267 cut-off events. [2024-06-14 13:03:01,763 INFO L125 PetriNetUnfolderBase]: For 609/609 co-relation queries the response was YES. [2024-06-14 13:03:01,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 267 events. 144/267 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 876 event pairs, 35 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 897. Up to 225 conditions per place. [2024-06-14 13:03:01,764 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 14 changer transitions 0/53 dead transitions. [2024-06-14 13:03:01,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 339 flow [2024-06-14 13:03:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 13:03:01,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-14 13:03:01,766 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 171 flow. Second operand 7 states and 80 transitions. [2024-06-14 13:03:01,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 339 flow [2024-06-14 13:03:01,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 326 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:01,769 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 215 flow [2024-06-14 13:03:01,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-14 13:03:01,770 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-14 13:03:01,770 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 215 flow [2024-06-14 13:03:01,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:01,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:01,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:01,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:03:01,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:01,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2091949473, now seen corresponding path program 1 times [2024-06-14 13:03:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367957154] [2024-06-14 13:03:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367957154] [2024-06-14 13:03:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367957154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:02,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:02,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317063228] [2024-06-14 13:03:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:02,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:02,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:02,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:02,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 215 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:02,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:02,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:02,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:02,489 INFO L124 PetriNetUnfolderBase]: 153/282 cut-off events. [2024-06-14 13:03:02,490 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2024-06-14 13:03:02,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 282 events. 153/282 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 933 event pairs, 36 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1012. Up to 230 conditions per place. [2024-06-14 13:03:02,491 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-06-14 13:03:02,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 405 flow [2024-06-14 13:03:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 13:03:02,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-14 13:03:02,495 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 215 flow. Second operand 7 states and 81 transitions. [2024-06-14 13:03:02,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 405 flow [2024-06-14 13:03:02,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 386 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:02,498 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 270 flow [2024-06-14 13:03:02,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 13:03:02,502 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-14 13:03:02,502 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 270 flow [2024-06-14 13:03:02,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:02,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:02,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:03:02,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:02,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:02,504 INFO L85 PathProgramCache]: Analyzing trace with hash -808835887, now seen corresponding path program 2 times [2024-06-14 13:03:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191939736] [2024-06-14 13:03:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:03,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191939736] [2024-06-14 13:03:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191939736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088686931] [2024-06-14 13:03:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:03,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:03,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:03,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 270 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:03,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:03,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:03,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:03,289 INFO L124 PetriNetUnfolderBase]: 156/287 cut-off events. [2024-06-14 13:03:03,289 INFO L125 PetriNetUnfolderBase]: For 1033/1033 co-relation queries the response was YES. [2024-06-14 13:03:03,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 287 events. 156/287 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 952 event pairs, 36 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1116. Up to 257 conditions per place. [2024-06-14 13:03:03,291 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2024-06-14 13:03:03,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 418 flow [2024-06-14 13:03:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-14 13:03:03,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-14 13:03:03,292 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 270 flow. Second operand 7 states and 75 transitions. [2024-06-14 13:03:03,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 418 flow [2024-06-14 13:03:03,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 405 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 13:03:03,295 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 306 flow [2024-06-14 13:03:03,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-14 13:03:03,296 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-14 13:03:03,296 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 306 flow [2024-06-14 13:03:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:03,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:03,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:03,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:03:03,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:03,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1825187705, now seen corresponding path program 2 times [2024-06-14 13:03:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143730963] [2024-06-14 13:03:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:03,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:03,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:03,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143730963] [2024-06-14 13:03:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143730963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:03,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:03,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488201471] [2024-06-14 13:03:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:03,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:03,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:03,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:03,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:03,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:03,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:03,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:03,894 INFO L124 PetriNetUnfolderBase]: 162/297 cut-off events. [2024-06-14 13:03:03,894 INFO L125 PetriNetUnfolderBase]: For 1319/1319 co-relation queries the response was YES. [2024-06-14 13:03:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 297 events. 162/297 cut-off events. For 1319/1319 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 999 event pairs, 34 based on Foata normal form. 2/298 useless extension candidates. Maximal degree in co-relation 1204. Up to 273 conditions per place. [2024-06-14 13:03:03,896 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2024-06-14 13:03:03,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 453 flow [2024-06-14 13:03:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 13:03:03,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 13:03:03,898 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 306 flow. Second operand 6 states and 65 transitions. [2024-06-14 13:03:03,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 453 flow [2024-06-14 13:03:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 418 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:03,901 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 326 flow [2024-06-14 13:03:03,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-14 13:03:03,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-14 13:03:03,904 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 326 flow [2024-06-14 13:03:03,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:03,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:03,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:03,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:03:03,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:03,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1825425041, now seen corresponding path program 3 times [2024-06-14 13:03:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34350934] [2024-06-14 13:03:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34350934] [2024-06-14 13:03:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34350934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209398161] [2024-06-14 13:03:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:04,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:04,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:04,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:04,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:04,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:04,653 INFO L124 PetriNetUnfolderBase]: 160/294 cut-off events. [2024-06-14 13:03:04,654 INFO L125 PetriNetUnfolderBase]: For 1497/1497 co-relation queries the response was YES. [2024-06-14 13:03:04,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 294 events. 160/294 cut-off events. For 1497/1497 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 982 event pairs, 33 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 1230. Up to 258 conditions per place. [2024-06-14 13:03:04,656 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-14 13:03:04,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 478 flow [2024-06-14 13:03:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-14 13:03:04,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-14 13:03:04,658 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 326 flow. Second operand 6 states and 71 transitions. [2024-06-14 13:03:04,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 478 flow [2024-06-14 13:03:04,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 461 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 13:03:04,661 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 343 flow [2024-06-14 13:03:04,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-14 13:03:04,661 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-14 13:03:04,662 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 343 flow [2024-06-14 13:03:04,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:04,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:04,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:04,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:03:04,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:04,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1682693983, now seen corresponding path program 3 times [2024-06-14 13:03:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:04,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496519102] [2024-06-14 13:03:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:04,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496519102] [2024-06-14 13:03:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496519102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:05,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:05,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646755894] [2024-06-14 13:03:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:05,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:05,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:05,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:05,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:05,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:05,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:05,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:05,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:05,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:05,374 INFO L124 PetriNetUnfolderBase]: 161/296 cut-off events. [2024-06-14 13:03:05,374 INFO L125 PetriNetUnfolderBase]: For 1832/1832 co-relation queries the response was YES. [2024-06-14 13:03:05,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 296 events. 161/296 cut-off events. For 1832/1832 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1003 event pairs, 35 based on Foata normal form. 2/297 useless extension candidates. Maximal degree in co-relation 1271. Up to 241 conditions per place. [2024-06-14 13:03:05,376 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 43 selfloop transitions, 20 changer transitions 0/65 dead transitions. [2024-06-14 13:03:05,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 539 flow [2024-06-14 13:03:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-14 13:03:05,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-14 13:03:05,378 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 343 flow. Second operand 6 states and 73 transitions. [2024-06-14 13:03:05,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 539 flow [2024-06-14 13:03:05,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 506 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:05,381 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 374 flow [2024-06-14 13:03:05,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-14 13:03:05,382 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-14 13:03:05,382 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 374 flow [2024-06-14 13:03:05,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:05,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:05,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:05,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:03:05,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:05,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1825178777, now seen corresponding path program 1 times [2024-06-14 13:03:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322606227] [2024-06-14 13:03:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:05,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322606227] [2024-06-14 13:03:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322606227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:06,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:06,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:03:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692717663] [2024-06-14 13:03:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:06,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:03:06,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:06,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:03:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:03:06,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:06,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:06,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:06,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:06,278 INFO L124 PetriNetUnfolderBase]: 158/291 cut-off events. [2024-06-14 13:03:06,278 INFO L125 PetriNetUnfolderBase]: For 2016/2016 co-relation queries the response was YES. [2024-06-14 13:03:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 291 events. 158/291 cut-off events. For 2016/2016 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 956 event pairs, 32 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 1282. Up to 267 conditions per place. [2024-06-14 13:03:06,280 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 49 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-06-14 13:03:06,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 506 flow [2024-06-14 13:03:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-14 13:03:06,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 13:03:06,281 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 374 flow. Second operand 6 states and 63 transitions. [2024-06-14 13:03:06,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 506 flow [2024-06-14 13:03:06,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 472 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:06,286 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 362 flow [2024-06-14 13:03:06,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-06-14 13:03:06,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-14 13:03:06,286 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 362 flow [2024-06-14 13:03:06,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:06,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:06,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:06,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:03:06,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:06,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:06,287 INFO L85 PathProgramCache]: Analyzing trace with hash 692082734, now seen corresponding path program 1 times [2024-06-14 13:03:06,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:06,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85627322] [2024-06-14 13:03:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:06,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:07,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:07,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85627322] [2024-06-14 13:03:07,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85627322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:07,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:07,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:07,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560593609] [2024-06-14 13:03:07,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:07,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:07,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:07,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:07,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:07,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:07,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 362 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:07,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:07,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:07,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:07,286 INFO L124 PetriNetUnfolderBase]: 161/296 cut-off events. [2024-06-14 13:03:07,286 INFO L125 PetriNetUnfolderBase]: For 1936/1936 co-relation queries the response was YES. [2024-06-14 13:03:07,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 296 events. 161/296 cut-off events. For 1936/1936 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 985 event pairs, 31 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 1270. Up to 231 conditions per place. [2024-06-14 13:03:07,288 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 50 selfloop transitions, 23 changer transitions 0/75 dead transitions. [2024-06-14 13:03:07,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 600 flow [2024-06-14 13:03:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:03:07,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-14 13:03:07,290 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 362 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:03:07,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 600 flow [2024-06-14 13:03:07,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 580 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:07,293 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 421 flow [2024-06-14 13:03:07,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=421, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-14 13:03:07,294 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-14 13:03:07,294 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 421 flow [2024-06-14 13:03:07,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:07,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:07,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:07,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:03:07,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:07,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash 692172944, now seen corresponding path program 2 times [2024-06-14 13:03:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:07,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629958687] [2024-06-14 13:03:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:07,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:08,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:08,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629958687] [2024-06-14 13:03:08,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629958687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:08,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:08,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:08,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649414095] [2024-06-14 13:03:08,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:08,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:08,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:08,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:08,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 421 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:08,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:08,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:08,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:08,211 INFO L124 PetriNetUnfolderBase]: 164/301 cut-off events. [2024-06-14 13:03:08,212 INFO L125 PetriNetUnfolderBase]: For 2244/2244 co-relation queries the response was YES. [2024-06-14 13:03:08,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 301 events. 164/301 cut-off events. For 2244/2244 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1016 event pairs, 31 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 1367. Up to 253 conditions per place. [2024-06-14 13:03:08,214 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 20 changer transitions 0/73 dead transitions. [2024-06-14 13:03:08,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 613 flow [2024-06-14 13:03:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 13:03:08,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 13:03:08,215 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 421 flow. Second operand 8 states and 87 transitions. [2024-06-14 13:03:08,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 613 flow [2024-06-14 13:03:08,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 73 transitions, 578 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:08,219 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 451 flow [2024-06-14 13:03:08,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=451, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-14 13:03:08,220 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-14 13:03:08,220 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 451 flow [2024-06-14 13:03:08,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:08,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:08,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:08,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:03:08,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:08,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1624766409, now seen corresponding path program 1 times [2024-06-14 13:03:08,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:08,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65760509] [2024-06-14 13:03:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65760509] [2024-06-14 13:03:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65760509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:08,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:08,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032461193] [2024-06-14 13:03:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:08,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:08,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:08,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:08,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:08,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:08,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:08,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:09,009 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-14 13:03:09,009 INFO L125 PetriNetUnfolderBase]: For 3056/3056 co-relation queries the response was YES. [2024-06-14 13:03:09,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 337 events. 186/337 cut-off events. For 3056/3056 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1174 event pairs, 31 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 1564. Up to 176 conditions per place. [2024-06-14 13:03:09,013 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 34 changer transitions 0/88 dead transitions. [2024-06-14 13:03:09,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 811 flow [2024-06-14 13:03:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 13:03:09,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 13:03:09,016 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 451 flow. Second operand 8 states and 102 transitions. [2024-06-14 13:03:09,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 811 flow [2024-06-14 13:03:09,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 768 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:09,022 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 532 flow [2024-06-14 13:03:09,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-06-14 13:03:09,022 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-14 13:03:09,022 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 532 flow [2024-06-14 13:03:09,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:09,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:09,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:09,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:03:09,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:09,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 695897749, now seen corresponding path program 2 times [2024-06-14 13:03:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:09,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651485102] [2024-06-14 13:03:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:09,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651485102] [2024-06-14 13:03:09,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651485102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:09,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:09,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859758507] [2024-06-14 13:03:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:09,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:09,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:09,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:09,908 INFO L124 PetriNetUnfolderBase]: 227/403 cut-off events. [2024-06-14 13:03:09,909 INFO L125 PetriNetUnfolderBase]: For 4187/4187 co-relation queries the response was YES. [2024-06-14 13:03:09,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 403 events. 227/403 cut-off events. For 4187/4187 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1491 event pairs, 36 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 2047. Up to 297 conditions per place. [2024-06-14 13:03:09,913 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 30 changer transitions 0/96 dead transitions. [2024-06-14 13:03:09,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 942 flow [2024-06-14 13:03:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:03:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:03:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:03:09,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-14 13:03:09,916 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 532 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:03:09,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 942 flow [2024-06-14 13:03:09,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 897 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:09,924 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 646 flow [2024-06-14 13:03:09,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=646, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-06-14 13:03:09,925 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-14 13:03:09,925 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 646 flow [2024-06-14 13:03:09,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:09,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:09,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:09,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:03:09,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:09,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 425919192, now seen corresponding path program 3 times [2024-06-14 13:03:09,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:09,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142477765] [2024-06-14 13:03:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142477765] [2024-06-14 13:03:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142477765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135026106] [2024-06-14 13:03:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:10,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:10,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 646 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:10,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:10,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:10,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:10,925 INFO L124 PetriNetUnfolderBase]: 223/398 cut-off events. [2024-06-14 13:03:10,925 INFO L125 PetriNetUnfolderBase]: For 4584/4584 co-relation queries the response was YES. [2024-06-14 13:03:10,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2139 conditions, 398 events. 223/398 cut-off events. For 4584/4584 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1466 event pairs, 37 based on Foata normal form. 3/400 useless extension candidates. Maximal degree in co-relation 2097. Up to 305 conditions per place. [2024-06-14 13:03:10,928 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2024-06-14 13:03:10,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 946 flow [2024-06-14 13:03:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 13:03:10,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 13:03:10,929 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 646 flow. Second operand 8 states and 95 transitions. [2024-06-14 13:03:10,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 946 flow [2024-06-14 13:03:10,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 893 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:10,938 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 675 flow [2024-06-14 13:03:10,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=675, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-14 13:03:10,938 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-14 13:03:10,938 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 675 flow [2024-06-14 13:03:10,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:10,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:10,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:03:10,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:10,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 695892169, now seen corresponding path program 3 times [2024-06-14 13:03:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809699354] [2024-06-14 13:03:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:11,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:11,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809699354] [2024-06-14 13:03:11,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809699354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:11,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:11,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112236337] [2024-06-14 13:03:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:11,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:11,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:11,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:11,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:11,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:11,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:11,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:11,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:11,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:11,722 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-14 13:03:11,723 INFO L125 PetriNetUnfolderBase]: For 4617/4617 co-relation queries the response was YES. [2024-06-14 13:03:11,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 382 events. 213/382 cut-off events. For 4617/4617 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1387 event pairs, 34 based on Foata normal form. 4/385 useless extension candidates. Maximal degree in co-relation 2031. Up to 289 conditions per place. [2024-06-14 13:03:11,725 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 29 changer transitions 0/92 dead transitions. [2024-06-14 13:03:11,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 933 flow [2024-06-14 13:03:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 13:03:11,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 13:03:11,726 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 675 flow. Second operand 8 states and 95 transitions. [2024-06-14 13:03:11,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 933 flow [2024-06-14 13:03:11,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 873 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:11,734 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 681 flow [2024-06-14 13:03:11,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2024-06-14 13:03:11,735 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-14 13:03:11,735 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 681 flow [2024-06-14 13:03:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:11,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:11,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:11,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:03:11,735 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:11,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash -746243303, now seen corresponding path program 4 times [2024-06-14 13:03:11,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:11,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425803514] [2024-06-14 13:03:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:11,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:12,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:12,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425803514] [2024-06-14 13:03:12,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425803514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:12,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:12,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211964838] [2024-06-14 13:03:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:12,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:12,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:12,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:12,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 681 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:12,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:12,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:12,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:12,508 INFO L124 PetriNetUnfolderBase]: 219/392 cut-off events. [2024-06-14 13:03:12,508 INFO L125 PetriNetUnfolderBase]: For 4768/4768 co-relation queries the response was YES. [2024-06-14 13:03:12,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 392 events. 219/392 cut-off events. For 4768/4768 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1443 event pairs, 37 based on Foata normal form. 2/393 useless extension candidates. Maximal degree in co-relation 2103. Up to 360 conditions per place. [2024-06-14 13:03:12,511 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 72 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-06-14 13:03:12,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 893 flow [2024-06-14 13:03:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 13:03:12,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-14 13:03:12,512 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 681 flow. Second operand 7 states and 74 transitions. [2024-06-14 13:03:12,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 893 flow [2024-06-14 13:03:12,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 835 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:12,520 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 676 flow [2024-06-14 13:03:12,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=676, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-14 13:03:12,520 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-14 13:03:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 676 flow [2024-06-14 13:03:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:12,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:12,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:12,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:03:12,521 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:12,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -745976176, now seen corresponding path program 1 times [2024-06-14 13:03:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521067949] [2024-06-14 13:03:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:12,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:13,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521067949] [2024-06-14 13:03:13,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521067949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:13,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:13,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:13,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899354315] [2024-06-14 13:03:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:13,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:13,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 676 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:13,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:13,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:13,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:13,358 INFO L124 PetriNetUnfolderBase]: 217/389 cut-off events. [2024-06-14 13:03:13,359 INFO L125 PetriNetUnfolderBase]: For 4797/4797 co-relation queries the response was YES. [2024-06-14 13:03:13,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 389 events. 217/389 cut-off events. For 4797/4797 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1427 event pairs, 35 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 2071. Up to 362 conditions per place. [2024-06-14 13:03:13,361 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 71 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-14 13:03:13,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 860 flow [2024-06-14 13:03:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:03:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:03:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 13:03:13,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 13:03:13,362 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 676 flow. Second operand 6 states and 65 transitions. [2024-06-14 13:03:13,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 860 flow [2024-06-14 13:03:13,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 823 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:13,374 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 671 flow [2024-06-14 13:03:13,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=671, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-14 13:03:13,374 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-14 13:03:13,375 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 671 flow [2024-06-14 13:03:13,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:13,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:13,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:13,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:03:13,375 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:13,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash -753600688, now seen corresponding path program 4 times [2024-06-14 13:03:13,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:13,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818433190] [2024-06-14 13:03:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:13,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:14,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818433190] [2024-06-14 13:03:14,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818433190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:14,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188501224] [2024-06-14 13:03:14,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:14,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:14,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:14,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:14,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:14,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:14,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 671 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:14,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:14,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:14,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:14,280 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-14 13:03:14,280 INFO L125 PetriNetUnfolderBase]: For 5048/5048 co-relation queries the response was YES. [2024-06-14 13:03:14,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 386 events. 215/386 cut-off events. For 5048/5048 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1418 event pairs, 37 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 2046. Up to 338 conditions per place. [2024-06-14 13:03:14,282 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 75 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2024-06-14 13:03:14,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 895 flow [2024-06-14 13:03:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:03:14,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-14 13:03:14,284 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 671 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:03:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 895 flow [2024-06-14 13:03:14,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 856 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:14,292 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 674 flow [2024-06-14 13:03:14,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=674, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-14 13:03:14,292 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-14 13:03:14,293 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 674 flow [2024-06-14 13:03:14,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:14,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:14,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:03:14,293 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:14,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash -753600533, now seen corresponding path program 5 times [2024-06-14 13:03:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:14,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934971831] [2024-06-14 13:03:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934971831] [2024-06-14 13:03:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934971831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:14,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:14,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:14,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131114523] [2024-06-14 13:03:14,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:14,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:14,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:14,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:14,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:14,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 674 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:14,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:14,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:14,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:15,034 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-14 13:03:15,035 INFO L125 PetriNetUnfolderBase]: For 5750/5750 co-relation queries the response was YES. [2024-06-14 13:03:15,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 406 events. 227/406 cut-off events. For 5750/5750 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1516 event pairs, 37 based on Foata normal form. 4/409 useless extension candidates. Maximal degree in co-relation 2157. Up to 283 conditions per place. [2024-06-14 13:03:15,038 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 28 changer transitions 0/99 dead transitions. [2024-06-14 13:03:15,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 998 flow [2024-06-14 13:03:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 13:03:15,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-14 13:03:15,039 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 674 flow. Second operand 7 states and 89 transitions. [2024-06-14 13:03:15,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 998 flow [2024-06-14 13:03:15,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 99 transitions, 954 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:15,050 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 727 flow [2024-06-14 13:03:15,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=727, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-14 13:03:15,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-14 13:03:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 727 flow [2024-06-14 13:03:15,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:15,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:15,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:15,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:03:15,051 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:15,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:15,052 INFO L85 PathProgramCache]: Analyzing trace with hash -753594953, now seen corresponding path program 6 times [2024-06-14 13:03:15,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:15,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771300162] [2024-06-14 13:03:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:15,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771300162] [2024-06-14 13:03:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771300162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545250166] [2024-06-14 13:03:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:15,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:15,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:15,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:15,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 727 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:15,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:15,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:15,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:15,806 INFO L124 PetriNetUnfolderBase]: 228/408 cut-off events. [2024-06-14 13:03:15,806 INFO L125 PetriNetUnfolderBase]: For 5775/5775 co-relation queries the response was YES. [2024-06-14 13:03:15,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 408 events. 228/408 cut-off events. For 5775/5775 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1527 event pairs, 39 based on Foata normal form. 2/409 useless extension candidates. Maximal degree in co-relation 2225. Up to 285 conditions per place. [2024-06-14 13:03:15,809 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-14 13:03:15,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 98 transitions, 1039 flow [2024-06-14 13:03:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 13:03:15,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-14 13:03:15,810 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 727 flow. Second operand 7 states and 86 transitions. [2024-06-14 13:03:15,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 98 transitions, 1039 flow [2024-06-14 13:03:15,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 956 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:15,820 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 731 flow [2024-06-14 13:03:15,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=731, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-14 13:03:15,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-14 13:03:15,821 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 731 flow [2024-06-14 13:03:15,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:15,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:15,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:15,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:03:15,822 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:15,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash 200445700, now seen corresponding path program 1 times [2024-06-14 13:03:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680042023] [2024-06-14 13:03:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:16,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680042023] [2024-06-14 13:03:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680042023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:16,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:16,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125808716] [2024-06-14 13:03:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:16,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:16,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:16,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:16,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:16,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 731 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:16,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:16,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:16,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:16,859 INFO L124 PetriNetUnfolderBase]: 261/475 cut-off events. [2024-06-14 13:03:16,859 INFO L125 PetriNetUnfolderBase]: For 8569/8569 co-relation queries the response was YES. [2024-06-14 13:03:16,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 475 events. 261/475 cut-off events. For 8569/8569 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1880 event pairs, 26 based on Foata normal form. 2/476 useless extension candidates. Maximal degree in co-relation 2624. Up to 167 conditions per place. [2024-06-14 13:03:16,863 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 62 selfloop transitions, 54 changer transitions 0/118 dead transitions. [2024-06-14 13:03:16,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 118 transitions, 1233 flow [2024-06-14 13:03:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 13:03:16,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-14 13:03:16,865 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 731 flow. Second operand 9 states and 113 transitions. [2024-06-14 13:03:16,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 118 transitions, 1233 flow [2024-06-14 13:03:16,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 118 transitions, 1189 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 13:03:16,877 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 880 flow [2024-06-14 13:03:16,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=880, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-14 13:03:16,878 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-14 13:03:16,878 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 880 flow [2024-06-14 13:03:16,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:16,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:16,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:16,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:03:16,879 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:16,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 200506150, now seen corresponding path program 2 times [2024-06-14 13:03:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634191153] [2024-06-14 13:03:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:17,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:17,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634191153] [2024-06-14 13:03:17,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634191153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:17,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:17,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828044998] [2024-06-14 13:03:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:17,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:17,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:17,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:17,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:17,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:17,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:17,741 INFO L124 PetriNetUnfolderBase]: 265/483 cut-off events. [2024-06-14 13:03:17,742 INFO L125 PetriNetUnfolderBase]: For 9717/9717 co-relation queries the response was YES. [2024-06-14 13:03:17,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 483 events. 265/483 cut-off events. For 9717/9717 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1947 event pairs, 40 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2839. Up to 293 conditions per place. [2024-06-14 13:03:17,746 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 58 selfloop transitions, 53 changer transitions 0/113 dead transitions. [2024-06-14 13:03:17,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 1268 flow [2024-06-14 13:03:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:03:17,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-14 13:03:17,748 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 880 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:03:17,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 113 transitions, 1268 flow [2024-06-14 13:03:17,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 1213 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 13:03:17,762 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 949 flow [2024-06-14 13:03:17,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=949, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2024-06-14 13:03:17,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-14 13:03:17,763 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 949 flow [2024-06-14 13:03:17,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:17,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:17,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:17,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:03:17,764 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:17,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 203302660, now seen corresponding path program 3 times [2024-06-14 13:03:17,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:17,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275001867] [2024-06-14 13:03:17,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:18,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275001867] [2024-06-14 13:03:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275001867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:18,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:18,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:18,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732892408] [2024-06-14 13:03:18,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:18,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:18,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:18,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:18,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:18,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:18,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:18,757 INFO L124 PetriNetUnfolderBase]: 269/491 cut-off events. [2024-06-14 13:03:18,757 INFO L125 PetriNetUnfolderBase]: For 10622/10622 co-relation queries the response was YES. [2024-06-14 13:03:18,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 491 events. 269/491 cut-off events. For 10622/10622 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2000 event pairs, 59 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2976. Up to 437 conditions per place. [2024-06-14 13:03:18,761 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 83 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-14 13:03:18,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 106 transitions, 1206 flow [2024-06-14 13:03:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 13:03:18,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-14 13:03:18,763 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 949 flow. Second operand 9 states and 95 transitions. [2024-06-14 13:03:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 106 transitions, 1206 flow [2024-06-14 13:03:18,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 1095 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:18,780 INFO L231 Difference]: Finished difference. Result has 111 places, 90 transitions, 897 flow [2024-06-14 13:03:18,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=897, PETRI_PLACES=111, PETRI_TRANSITIONS=90} [2024-06-14 13:03:18,781 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-14 13:03:18,781 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 90 transitions, 897 flow [2024-06-14 13:03:18,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:18,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:18,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:18,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:03:18,782 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:18,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:18,784 INFO L85 PathProgramCache]: Analyzing trace with hash 929630826, now seen corresponding path program 1 times [2024-06-14 13:03:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:18,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551201216] [2024-06-14 13:03:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:18,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551201216] [2024-06-14 13:03:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551201216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:19,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193948732] [2024-06-14 13:03:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:19,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:19,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:19,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 90 transitions, 897 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:19,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:19,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:19,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:19,647 INFO L124 PetriNetUnfolderBase]: 265/485 cut-off events. [2024-06-14 13:03:19,647 INFO L125 PetriNetUnfolderBase]: For 10674/10674 co-relation queries the response was YES. [2024-06-14 13:03:19,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 485 events. 265/485 cut-off events. For 10674/10674 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1976 event pairs, 40 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2834. Up to 356 conditions per place. [2024-06-14 13:03:19,651 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 41 changer transitions 0/109 dead transitions. [2024-06-14 13:03:19,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1213 flow [2024-06-14 13:03:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 13:03:19,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-14 13:03:19,653 INFO L175 Difference]: Start difference. First operand has 111 places, 90 transitions, 897 flow. Second operand 8 states and 98 transitions. [2024-06-14 13:03:19,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1213 flow [2024-06-14 13:03:19,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 109 transitions, 1161 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:19,669 INFO L231 Difference]: Finished difference. Result has 112 places, 90 transitions, 935 flow [2024-06-14 13:03:19,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=104, 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=935, PETRI_PLACES=112, PETRI_TRANSITIONS=90} [2024-06-14 13:03:19,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-14 13:03:19,673 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 90 transitions, 935 flow [2024-06-14 13:03:19,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:19,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:19,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:19,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:03:19,674 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:19,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash 97816720, now seen corresponding path program 4 times [2024-06-14 13:03:19,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447467492] [2024-06-14 13:03:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:20,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447467492] [2024-06-14 13:03:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447467492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154640735] [2024-06-14 13:03:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:20,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:20,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 90 transitions, 935 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:20,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:20,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:20,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:20,706 INFO L124 PetriNetUnfolderBase]: 285/529 cut-off events. [2024-06-14 13:03:20,706 INFO L125 PetriNetUnfolderBase]: For 15003/15003 co-relation queries the response was YES. [2024-06-14 13:03:20,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 529 events. 285/529 cut-off events. For 15003/15003 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2243 event pairs, 53 based on Foata normal form. 12/540 useless extension candidates. Maximal degree in co-relation 3049. Up to 395 conditions per place. [2024-06-14 13:03:20,711 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 76 selfloop transitions, 25 changer transitions 9/112 dead transitions. [2024-06-14 13:03:20,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 1236 flow [2024-06-14 13:03:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 13:03:20,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 13:03:20,712 INFO L175 Difference]: Start difference. First operand has 112 places, 90 transitions, 935 flow. Second operand 9 states and 105 transitions. [2024-06-14 13:03:20,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 1236 flow [2024-06-14 13:03:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 1147 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:20,731 INFO L231 Difference]: Finished difference. Result has 114 places, 87 transitions, 875 flow [2024-06-14 13:03:20,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=114, PETRI_TRANSITIONS=87} [2024-06-14 13:03:20,732 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-14 13:03:20,732 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 87 transitions, 875 flow [2024-06-14 13:03:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:03:20,732 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:20,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash 98001418, now seen corresponding path program 1 times [2024-06-14 13:03:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074765689] [2024-06-14 13:03:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:21,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074765689] [2024-06-14 13:03:21,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074765689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:21,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:21,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793300593] [2024-06-14 13:03:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:21,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:21,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:21,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:21,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 87 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:21,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:21,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:21,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:21,660 INFO L124 PetriNetUnfolderBase]: 259/483 cut-off events. [2024-06-14 13:03:21,676 INFO L125 PetriNetUnfolderBase]: For 11482/11482 co-relation queries the response was YES. [2024-06-14 13:03:21,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 483 events. 259/483 cut-off events. For 11482/11482 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2014 event pairs, 49 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2824. Up to 423 conditions per place. [2024-06-14 13:03:21,679 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 79 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-14 13:03:21,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 102 transitions, 1117 flow [2024-06-14 13:03:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 13:03:21,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:03:21,683 INFO L175 Difference]: Start difference. First operand has 114 places, 87 transitions, 875 flow. Second operand 8 states and 88 transitions. [2024-06-14 13:03:21,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 102 transitions, 1117 flow [2024-06-14 13:03:21,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 102 transitions, 1047 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 13:03:21,706 INFO L231 Difference]: Finished difference. Result has 114 places, 88 transitions, 859 flow [2024-06-14 13:03:21,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=859, PETRI_PLACES=114, PETRI_TRANSITIONS=88} [2024-06-14 13:03:21,706 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-14 13:03:21,707 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 88 transitions, 859 flow [2024-06-14 13:03:21,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:21,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:21,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:21,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:03:21,707 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:21,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1650424272, now seen corresponding path program 1 times [2024-06-14 13:03:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:21,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256534572] [2024-06-14 13:03:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:22,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:22,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256534572] [2024-06-14 13:03:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256534572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:22,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311791994] [2024-06-14 13:03:22,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:22,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:22,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:22,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:22,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:22,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 88 transitions, 859 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:22,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:22,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:22,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:22,576 INFO L124 PetriNetUnfolderBase]: 257/480 cut-off events. [2024-06-14 13:03:22,576 INFO L125 PetriNetUnfolderBase]: For 11490/11490 co-relation queries the response was YES. [2024-06-14 13:03:22,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 480 events. 257/480 cut-off events. For 11490/11490 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1995 event pairs, 50 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2779. Up to 442 conditions per place. [2024-06-14 13:03:22,579 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 79 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2024-06-14 13:03:22,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 1073 flow [2024-06-14 13:03:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 13:03:22,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-14 13:03:22,580 INFO L175 Difference]: Start difference. First operand has 114 places, 88 transitions, 859 flow. Second operand 7 states and 74 transitions. [2024-06-14 13:03:22,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 1073 flow [2024-06-14 13:03:22,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 97 transitions, 1025 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:22,597 INFO L231 Difference]: Finished difference. Result has 115 places, 88 transitions, 851 flow [2024-06-14 13:03:22,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=851, PETRI_PLACES=115, PETRI_TRANSITIONS=88} [2024-06-14 13:03:22,598 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-14 13:03:22,598 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 88 transitions, 851 flow [2024-06-14 13:03:22,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:22,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:22,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:22,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:03:22,598 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:22,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1658467594, now seen corresponding path program 2 times [2024-06-14 13:03:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:22,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269853586] [2024-06-14 13:03:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:22,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:23,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269853586] [2024-06-14 13:03:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269853586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:23,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776363097] [2024-06-14 13:03:23,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:23,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:23,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:23,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 88 transitions, 851 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:23,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:23,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:23,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:23,442 INFO L124 PetriNetUnfolderBase]: 261/488 cut-off events. [2024-06-14 13:03:23,442 INFO L125 PetriNetUnfolderBase]: For 12790/12790 co-relation queries the response was YES. [2024-06-14 13:03:23,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 488 events. 261/488 cut-off events. For 12790/12790 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2057 event pairs, 53 based on Foata normal form. 2/489 useless extension candidates. Maximal degree in co-relation 2818. Up to 453 conditions per place. [2024-06-14 13:03:23,446 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 83 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-06-14 13:03:23,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 98 transitions, 1073 flow [2024-06-14 13:03:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 13:03:23,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-14 13:03:23,448 INFO L175 Difference]: Start difference. First operand has 115 places, 88 transitions, 851 flow. Second operand 7 states and 73 transitions. [2024-06-14 13:03:23,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 98 transitions, 1073 flow [2024-06-14 13:03:23,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 98 transitions, 1035 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:23,465 INFO L231 Difference]: Finished difference. Result has 117 places, 89 transitions, 854 flow [2024-06-14 13:03:23,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=117, PETRI_TRANSITIONS=89} [2024-06-14 13:03:23,466 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-14 13:03:23,466 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 89 transitions, 854 flow [2024-06-14 13:03:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:23,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:23,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:03:23,467 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:23,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1886599384, now seen corresponding path program 3 times [2024-06-14 13:03:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118833053] [2024-06-14 13:03:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:24,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:24,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118833053] [2024-06-14 13:03:24,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118833053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:24,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:24,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241877494] [2024-06-14 13:03:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:24,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:24,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 89 transitions, 854 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:24,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:24,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:24,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:24,464 INFO L124 PetriNetUnfolderBase]: 265/496 cut-off events. [2024-06-14 13:03:24,464 INFO L125 PetriNetUnfolderBase]: For 13661/13661 co-relation queries the response was YES. [2024-06-14 13:03:24,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 496 events. 265/496 cut-off events. For 13661/13661 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2105 event pairs, 50 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 2876. Up to 430 conditions per place. [2024-06-14 13:03:24,468 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 79 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-06-14 13:03:24,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 103 transitions, 1100 flow [2024-06-14 13:03:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 13:03:24,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-14 13:03:24,469 INFO L175 Difference]: Start difference. First operand has 117 places, 89 transitions, 854 flow. Second operand 7 states and 80 transitions. [2024-06-14 13:03:24,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 103 transitions, 1100 flow [2024-06-14 13:03:24,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 103 transitions, 1067 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:24,489 INFO L231 Difference]: Finished difference. Result has 119 places, 90 transitions, 883 flow [2024-06-14 13:03:24,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=883, PETRI_PLACES=119, PETRI_TRANSITIONS=90} [2024-06-14 13:03:24,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-14 13:03:24,491 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 90 transitions, 883 flow [2024-06-14 13:03:24,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:24,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:24,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:03:24,491 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:24,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1886606328, now seen corresponding path program 2 times [2024-06-14 13:03:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564883917] [2024-06-14 13:03:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:25,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564883917] [2024-06-14 13:03:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564883917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:25,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:25,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:03:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199233404] [2024-06-14 13:03:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:25,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:03:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:03:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:03:25,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:25,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 90 transitions, 883 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:25,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:25,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:25,336 INFO L124 PetriNetUnfolderBase]: 261/490 cut-off events. [2024-06-14 13:03:25,336 INFO L125 PetriNetUnfolderBase]: For 13604/13604 co-relation queries the response was YES. [2024-06-14 13:03:25,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 490 events. 261/490 cut-off events. For 13604/13604 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2068 event pairs, 52 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 2843. Up to 378 conditions per place. [2024-06-14 13:03:25,339 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 74 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-14 13:03:25,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 109 transitions, 1149 flow [2024-06-14 13:03:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 13:03:25,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 13:03:25,340 INFO L175 Difference]: Start difference. First operand has 119 places, 90 transitions, 883 flow. Second operand 7 states and 91 transitions. [2024-06-14 13:03:25,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 109 transitions, 1149 flow [2024-06-14 13:03:25,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 109 transitions, 1095 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:03:25,359 INFO L231 Difference]: Finished difference. Result has 121 places, 90 transitions, 909 flow [2024-06-14 13:03:25,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=121, PETRI_TRANSITIONS=90} [2024-06-14 13:03:25,360 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-14 13:03:25,360 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 90 transitions, 909 flow [2024-06-14 13:03:25,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:25,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:25,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:25,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:03:25,361 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:25,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:25,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1650127354, now seen corresponding path program 4 times [2024-06-14 13:03:25,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:25,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338641324] [2024-06-14 13:03:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:25,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:25,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338641324] [2024-06-14 13:03:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338641324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:25,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323272934] [2024-06-14 13:03:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:25,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:25,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:25,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:25,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:25,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:25,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 90 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:25,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:25,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:25,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:26,120 INFO L124 PetriNetUnfolderBase]: 258/485 cut-off events. [2024-06-14 13:03:26,120 INFO L125 PetriNetUnfolderBase]: For 12694/12694 co-relation queries the response was YES. [2024-06-14 13:03:26,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 485 events. 258/485 cut-off events. For 12694/12694 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2034 event pairs, 51 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2794. Up to 453 conditions per place. [2024-06-14 13:03:26,122 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 87 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2024-06-14 13:03:26,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 99 transitions, 1123 flow [2024-06-14 13:03:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:03:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:03:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-14 13:03:26,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-06-14 13:03:26,125 INFO L175 Difference]: Start difference. First operand has 121 places, 90 transitions, 909 flow. Second operand 7 states and 71 transitions. [2024-06-14 13:03:26,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 99 transitions, 1123 flow [2024-06-14 13:03:26,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 99 transitions, 998 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:03:26,149 INFO L231 Difference]: Finished difference. Result has 119 places, 90 transitions, 808 flow [2024-06-14 13:03:26,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=808, PETRI_PLACES=119, PETRI_TRANSITIONS=90} [2024-06-14 13:03:26,149 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-14 13:03:26,149 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 90 transitions, 808 flow [2024-06-14 13:03:26,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:26,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:26,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:26,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:03:26,150 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:26,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1886784082, now seen corresponding path program 5 times [2024-06-14 13:03:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63826318] [2024-06-14 13:03:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:26,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63826318] [2024-06-14 13:03:26,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63826318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:26,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:26,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966636379] [2024-06-14 13:03:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:26,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:26,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 90 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:26,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:26,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:26,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:27,132 INFO L124 PetriNetUnfolderBase]: 271/516 cut-off events. [2024-06-14 13:03:27,133 INFO L125 PetriNetUnfolderBase]: For 16162/16162 co-relation queries the response was YES. [2024-06-14 13:03:27,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 516 events. 271/516 cut-off events. For 16162/16162 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2251 event pairs, 40 based on Foata normal form. 12/527 useless extension candidates. Maximal degree in co-relation 2688. Up to 338 conditions per place. [2024-06-14 13:03:27,135 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 73 selfloop transitions, 29 changer transitions 11/115 dead transitions. [2024-06-14 13:03:27,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 115 transitions, 1112 flow [2024-06-14 13:03:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 13:03:27,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-14 13:03:27,137 INFO L175 Difference]: Start difference. First operand has 119 places, 90 transitions, 808 flow. Second operand 8 states and 103 transitions. [2024-06-14 13:03:27,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 115 transitions, 1112 flow [2024-06-14 13:03:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 115 transitions, 1070 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:27,157 INFO L231 Difference]: Finished difference. Result has 121 places, 84 transitions, 777 flow [2024-06-14 13:03:27,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=777, PETRI_PLACES=121, PETRI_TRANSITIONS=84} [2024-06-14 13:03:27,158 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-14 13:03:27,158 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 84 transitions, 777 flow [2024-06-14 13:03:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:27,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:27,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:27,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:03:27,159 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:27,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1971362424, now seen corresponding path program 1 times [2024-06-14 13:03:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153445475] [2024-06-14 13:03:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153445475] [2024-06-14 13:03:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153445475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:27,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025440384] [2024-06-14 13:03:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:27,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:27,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:27,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:27,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 84 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:27,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:27,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:27,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:27,983 INFO L124 PetriNetUnfolderBase]: 269/530 cut-off events. [2024-06-14 13:03:27,984 INFO L125 PetriNetUnfolderBase]: For 18994/18994 co-relation queries the response was YES. [2024-06-14 13:03:27,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 530 events. 269/530 cut-off events. For 18994/18994 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2400 event pairs, 52 based on Foata normal form. 8/537 useless extension candidates. Maximal degree in co-relation 2996. Up to 227 conditions per place. [2024-06-14 13:03:27,987 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 37 changer transitions 13/111 dead transitions. [2024-06-14 13:03:27,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 111 transitions, 1151 flow [2024-06-14 13:03:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 13:03:27,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-14 13:03:27,988 INFO L175 Difference]: Start difference. First operand has 121 places, 84 transitions, 777 flow. Second operand 9 states and 107 transitions. [2024-06-14 13:03:27,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 111 transitions, 1151 flow [2024-06-14 13:03:28,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 1044 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:28,011 INFO L231 Difference]: Finished difference. Result has 120 places, 81 transitions, 728 flow [2024-06-14 13:03:28,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=728, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2024-06-14 13:03:28,011 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-14 13:03:28,011 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 728 flow [2024-06-14 13:03:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:28,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:28,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:03:28,012 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:28,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -628395150, now seen corresponding path program 2 times [2024-06-14 13:03:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932402394] [2024-06-14 13:03:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:28,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:28,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932402394] [2024-06-14 13:03:28,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932402394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:28,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:28,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:28,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323883920] [2024-06-14 13:03:28,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:28,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:28,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:28,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:28,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:28,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:28,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 728 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:28,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:28,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:28,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:28,867 INFO L124 PetriNetUnfolderBase]: 232/457 cut-off events. [2024-06-14 13:03:28,867 INFO L125 PetriNetUnfolderBase]: For 16151/16151 co-relation queries the response was YES. [2024-06-14 13:03:28,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 457 events. 232/457 cut-off events. For 16151/16151 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1983 event pairs, 47 based on Foata normal form. 12/468 useless extension candidates. Maximal degree in co-relation 2422. Up to 243 conditions per place. [2024-06-14 13:03:28,870 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 40 changer transitions 8/103 dead transitions. [2024-06-14 13:03:28,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 103 transitions, 1014 flow [2024-06-14 13:03:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 13:03:28,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-14 13:03:28,871 INFO L175 Difference]: Start difference. First operand has 120 places, 81 transitions, 728 flow. Second operand 9 states and 107 transitions. [2024-06-14 13:03:28,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 103 transitions, 1014 flow [2024-06-14 13:03:28,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 103 transitions, 951 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:28,887 INFO L231 Difference]: Finished difference. Result has 118 places, 78 transitions, 742 flow [2024-06-14 13:03:28,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=742, PETRI_PLACES=118, PETRI_TRANSITIONS=78} [2024-06-14 13:03:28,888 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-14 13:03:28,888 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 78 transitions, 742 flow [2024-06-14 13:03:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:28,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:28,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:28,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:03:28,889 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:28,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1249937490, now seen corresponding path program 3 times [2024-06-14 13:03:28,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:28,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472117488] [2024-06-14 13:03:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:28,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472117488] [2024-06-14 13:03:29,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472117488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:29,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:29,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522346950] [2024-06-14 13:03:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:29,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:29,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:29,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 78 transitions, 742 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:29,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:29,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:29,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:29,724 INFO L124 PetriNetUnfolderBase]: 247/494 cut-off events. [2024-06-14 13:03:29,724 INFO L125 PetriNetUnfolderBase]: For 17520/17520 co-relation queries the response was YES. [2024-06-14 13:03:29,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 494 events. 247/494 cut-off events. For 17520/17520 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2214 event pairs, 58 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 2818. Up to 213 conditions per place. [2024-06-14 13:03:29,727 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 34 changer transitions 12/103 dead transitions. [2024-06-14 13:03:29,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 103 transitions, 1080 flow [2024-06-14 13:03:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:03:29,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-14 13:03:29,728 INFO L175 Difference]: Start difference. First operand has 118 places, 78 transitions, 742 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:03:29,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 103 transitions, 1080 flow [2024-06-14 13:03:29,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 103 transitions, 982 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:03:29,747 INFO L231 Difference]: Finished difference. Result has 119 places, 71 transitions, 657 flow [2024-06-14 13:03:29,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=657, PETRI_PLACES=119, PETRI_TRANSITIONS=71} [2024-06-14 13:03:29,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-14 13:03:29,748 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 71 transitions, 657 flow [2024-06-14 13:03:29,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:29,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:29,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:03:29,748 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:29,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash -541559190, now seen corresponding path program 4 times [2024-06-14 13:03:29,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095869401] [2024-06-14 13:03:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095869401] [2024-06-14 13:03:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095869401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:30,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:30,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:30,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146946942] [2024-06-14 13:03:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:30,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:30,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:30,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:30,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 71 transitions, 657 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:30,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:30,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:30,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:30,805 INFO L124 PetriNetUnfolderBase]: 219/441 cut-off events. [2024-06-14 13:03:30,806 INFO L125 PetriNetUnfolderBase]: For 17552/17552 co-relation queries the response was YES. [2024-06-14 13:03:30,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2544 conditions, 441 events. 219/441 cut-off events. For 17552/17552 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1907 event pairs, 62 based on Foata normal form. 10/450 useless extension candidates. Maximal degree in co-relation 2484. Up to 268 conditions per place. [2024-06-14 13:03:30,808 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 30 changer transitions 9/93 dead transitions. [2024-06-14 13:03:30,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 93 transitions, 905 flow [2024-06-14 13:03:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:03:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:03:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 13:03:30,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:03:30,809 INFO L175 Difference]: Start difference. First operand has 119 places, 71 transitions, 657 flow. Second operand 10 states and 110 transitions. [2024-06-14 13:03:30,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 93 transitions, 905 flow [2024-06-14 13:03:30,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 93 transitions, 817 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 13:03:30,827 INFO L231 Difference]: Finished difference. Result has 112 places, 68 transitions, 612 flow [2024-06-14 13:03:30,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=612, PETRI_PLACES=112, PETRI_TRANSITIONS=68} [2024-06-14 13:03:30,828 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-14 13:03:30,828 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 68 transitions, 612 flow [2024-06-14 13:03:30,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:30,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:30,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:30,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:03:30,829 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:30,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1256930074, now seen corresponding path program 1 times [2024-06-14 13:03:30,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:30,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706993963] [2024-06-14 13:03:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:30,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:31,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:31,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706993963] [2024-06-14 13:03:31,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706993963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:31,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253217874] [2024-06-14 13:03:31,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:31,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:31,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:31,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 68 transitions, 612 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:31,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:31,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:31,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:31,934 INFO L124 PetriNetUnfolderBase]: 197/399 cut-off events. [2024-06-14 13:03:31,934 INFO L125 PetriNetUnfolderBase]: For 11458/11458 co-relation queries the response was YES. [2024-06-14 13:03:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 399 events. 197/399 cut-off events. For 11458/11458 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1681 event pairs, 56 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 2274. Up to 322 conditions per place. [2024-06-14 13:03:31,937 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 61 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-06-14 13:03:31,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 88 transitions, 854 flow [2024-06-14 13:03:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:03:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:03:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 13:03:31,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 13:03:31,939 INFO L175 Difference]: Start difference. First operand has 112 places, 68 transitions, 612 flow. Second operand 11 states and 112 transitions. [2024-06-14 13:03:31,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 88 transitions, 854 flow [2024-06-14 13:03:31,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 88 transitions, 788 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:31,957 INFO L231 Difference]: Finished difference. Result has 111 places, 69 transitions, 622 flow [2024-06-14 13:03:31,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=622, PETRI_PLACES=111, PETRI_TRANSITIONS=69} [2024-06-14 13:03:31,957 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-14 13:03:31,958 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 69 transitions, 622 flow [2024-06-14 13:03:31,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:31,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:31,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:03:31,958 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:31,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1292200480, now seen corresponding path program 2 times [2024-06-14 13:03:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:31,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162951161] [2024-06-14 13:03:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162951161] [2024-06-14 13:03:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162951161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:32,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432405255] [2024-06-14 13:03:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:32,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:32,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:32,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 69 transitions, 622 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:32,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:32,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:32,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:32,969 INFO L124 PetriNetUnfolderBase]: 237/479 cut-off events. [2024-06-14 13:03:32,969 INFO L125 PetriNetUnfolderBase]: For 15678/15678 co-relation queries the response was YES. [2024-06-14 13:03:32,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2919 conditions, 479 events. 237/479 cut-off events. For 15678/15678 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2164 event pairs, 66 based on Foata normal form. 2/480 useless extension candidates. Maximal degree in co-relation 2864. Up to 305 conditions per place. [2024-06-14 13:03:32,971 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 62 selfloop transitions, 31 changer transitions 0/95 dead transitions. [2024-06-14 13:03:32,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 95 transitions, 974 flow [2024-06-14 13:03:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:03:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:03:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 13:03:32,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 13:03:32,972 INFO L175 Difference]: Start difference. First operand has 111 places, 69 transitions, 622 flow. Second operand 11 states and 120 transitions. [2024-06-14 13:03:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 95 transitions, 974 flow [2024-06-14 13:03:32,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 95 transitions, 905 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 13:03:32,991 INFO L231 Difference]: Finished difference. Result has 113 places, 71 transitions, 665 flow [2024-06-14 13:03:32,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=665, PETRI_PLACES=113, PETRI_TRANSITIONS=71} [2024-06-14 13:03:32,994 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-14 13:03:32,994 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 71 transitions, 665 flow [2024-06-14 13:03:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:32,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:32,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:32,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:03:33,000 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:33,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1286475028, now seen corresponding path program 5 times [2024-06-14 13:03:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002195970] [2024-06-14 13:03:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:33,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:33,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002195970] [2024-06-14 13:03:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002195970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:33,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080925722] [2024-06-14 13:03:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:33,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:33,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 71 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:33,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:33,896 INFO L124 PetriNetUnfolderBase]: 264/540 cut-off events. [2024-06-14 13:03:33,896 INFO L125 PetriNetUnfolderBase]: For 20746/20746 co-relation queries the response was YES. [2024-06-14 13:03:33,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 540 events. 264/540 cut-off events. For 20746/20746 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2559 event pairs, 89 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 3216. Up to 299 conditions per place. [2024-06-14 13:03:33,899 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 23 changer transitions 7/96 dead transitions. [2024-06-14 13:03:33,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 96 transitions, 985 flow [2024-06-14 13:03:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 13:03:33,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 13:03:33,925 INFO L175 Difference]: Start difference. First operand has 113 places, 71 transitions, 665 flow. Second operand 9 states and 108 transitions. [2024-06-14 13:03:33,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 96 transitions, 985 flow [2024-06-14 13:03:33,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 96 transitions, 903 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 13:03:33,945 INFO L231 Difference]: Finished difference. Result has 114 places, 69 transitions, 618 flow [2024-06-14 13:03:33,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=618, PETRI_PLACES=114, PETRI_TRANSITIONS=69} [2024-06-14 13:03:33,946 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-14 13:03:33,947 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 69 transitions, 618 flow [2024-06-14 13:03:33,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:33,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:33,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:33,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:03:33,947 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:33,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1286478748, now seen corresponding path program 6 times [2024-06-14 13:03:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:33,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247114652] [2024-06-14 13:03:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247114652] [2024-06-14 13:03:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247114652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:34,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702654767] [2024-06-14 13:03:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:34,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:34,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:34,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:34,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 69 transitions, 618 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:34,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:34,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:34,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:34,835 INFO L124 PetriNetUnfolderBase]: 230/474 cut-off events. [2024-06-14 13:03:34,836 INFO L125 PetriNetUnfolderBase]: For 19094/19094 co-relation queries the response was YES. [2024-06-14 13:03:34,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 474 events. 230/474 cut-off events. For 19094/19094 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2142 event pairs, 77 based on Foata normal form. 12/485 useless extension candidates. Maximal degree in co-relation 2650. Up to 346 conditions per place. [2024-06-14 13:03:34,839 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 23 changer transitions 8/90 dead transitions. [2024-06-14 13:03:34,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 90 transitions, 858 flow [2024-06-14 13:03:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 13:03:34,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-14 13:03:34,858 INFO L175 Difference]: Start difference. First operand has 114 places, 69 transitions, 618 flow. Second operand 9 states and 104 transitions. [2024-06-14 13:03:34,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 90 transitions, 858 flow [2024-06-14 13:03:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 90 transitions, 800 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:03:34,877 INFO L231 Difference]: Finished difference. Result has 113 places, 65 transitions, 577 flow [2024-06-14 13:03:34,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=577, PETRI_PLACES=113, PETRI_TRANSITIONS=65} [2024-06-14 13:03:34,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-14 13:03:34,877 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 65 transitions, 577 flow [2024-06-14 13:03:34,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:34,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:34,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:34,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:03:34,879 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:34,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash 385660282, now seen corresponding path program 3 times [2024-06-14 13:03:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816606246] [2024-06-14 13:03:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:35,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:35,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816606246] [2024-06-14 13:03:35,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816606246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:35,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643456694] [2024-06-14 13:03:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:35,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:35,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:35,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:35,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 65 transitions, 577 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:35,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:35,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:35,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:35,852 INFO L124 PetriNetUnfolderBase]: 209/431 cut-off events. [2024-06-14 13:03:35,852 INFO L125 PetriNetUnfolderBase]: For 13948/13948 co-relation queries the response was YES. [2024-06-14 13:03:35,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 431 events. 209/431 cut-off events. For 13948/13948 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1882 event pairs, 75 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2494. Up to 391 conditions per place. [2024-06-14 13:03:35,855 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 64 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-06-14 13:03:35,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 77 transitions, 773 flow [2024-06-14 13:03:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-14 13:03:35,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2024-06-14 13:03:35,878 INFO L175 Difference]: Start difference. First operand has 113 places, 65 transitions, 577 flow. Second operand 8 states and 79 transitions. [2024-06-14 13:03:35,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 77 transitions, 773 flow [2024-06-14 13:03:35,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 77 transitions, 713 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 13:03:35,895 INFO L231 Difference]: Finished difference. Result has 109 places, 66 transitions, 567 flow [2024-06-14 13:03:35,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=567, PETRI_PLACES=109, PETRI_TRANSITIONS=66} [2024-06-14 13:03:35,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-14 13:03:35,899 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 66 transitions, 567 flow [2024-06-14 13:03:35,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:35,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:35,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:35,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:03:35,900 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:35,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash 376456072, now seen corresponding path program 4 times [2024-06-14 13:03:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816994157] [2024-06-14 13:03:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816994157] [2024-06-14 13:03:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816994157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:36,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:36,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:36,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708700052] [2024-06-14 13:03:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:36,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:36,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:36,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:36,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:36,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 66 transitions, 567 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:36,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:36,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:36,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:36,946 INFO L124 PetriNetUnfolderBase]: 213/439 cut-off events. [2024-06-14 13:03:36,946 INFO L125 PetriNetUnfolderBase]: For 14327/14327 co-relation queries the response was YES. [2024-06-14 13:03:36,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 439 events. 213/439 cut-off events. For 14327/14327 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1935 event pairs, 73 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2527. Up to 393 conditions per place. [2024-06-14 13:03:36,949 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 61 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-14 13:03:36,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 78 transitions, 771 flow [2024-06-14 13:03:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 13:03:36,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 13:03:36,953 INFO L175 Difference]: Start difference. First operand has 109 places, 66 transitions, 567 flow. Second operand 8 states and 81 transitions. [2024-06-14 13:03:36,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 78 transitions, 771 flow [2024-06-14 13:03:36,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 78 transitions, 731 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:36,972 INFO L231 Difference]: Finished difference. Result has 111 places, 67 transitions, 588 flow [2024-06-14 13:03:36,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=588, PETRI_PLACES=111, PETRI_TRANSITIONS=67} [2024-06-14 13:03:36,972 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-14 13:03:36,972 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 67 transitions, 588 flow [2024-06-14 13:03:36,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:36,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:36,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:03:36,973 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:36,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 376463512, now seen corresponding path program 5 times [2024-06-14 13:03:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:36,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644960354] [2024-06-14 13:03:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644960354] [2024-06-14 13:03:37,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644960354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:37,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:37,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981353995] [2024-06-14 13:03:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:37,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:37,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:37,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:37,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:37,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 67 transitions, 588 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:37,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:37,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:37,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:37,971 INFO L124 PetriNetUnfolderBase]: 217/447 cut-off events. [2024-06-14 13:03:37,971 INFO L125 PetriNetUnfolderBase]: For 15269/15269 co-relation queries the response was YES. [2024-06-14 13:03:37,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 447 events. 217/447 cut-off events. For 15269/15269 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1980 event pairs, 79 based on Foata normal form. 2/448 useless extension candidates. Maximal degree in co-relation 2609. Up to 385 conditions per place. [2024-06-14 13:03:37,973 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-14 13:03:37,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 79 transitions, 794 flow [2024-06-14 13:03:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 13:03:37,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-14 13:03:37,975 INFO L175 Difference]: Start difference. First operand has 111 places, 67 transitions, 588 flow. Second operand 8 states and 82 transitions. [2024-06-14 13:03:37,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 79 transitions, 794 flow [2024-06-14 13:03:37,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 79 transitions, 745 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:37,995 INFO L231 Difference]: Finished difference. Result has 113 places, 68 transitions, 601 flow [2024-06-14 13:03:37,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=601, PETRI_PLACES=113, PETRI_TRANSITIONS=68} [2024-06-14 13:03:37,996 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-14 13:03:37,996 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 68 transitions, 601 flow [2024-06-14 13:03:37,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:37,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:37,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:37,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:03:37,997 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:37,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1639390314, now seen corresponding path program 6 times [2024-06-14 13:03:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313109363] [2024-06-14 13:03:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313109363] [2024-06-14 13:03:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313109363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725101910] [2024-06-14 13:03:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:38,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:38,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 68 transitions, 601 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:38,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:38,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:38,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:38,930 INFO L124 PetriNetUnfolderBase]: 237/491 cut-off events. [2024-06-14 13:03:38,931 INFO L125 PetriNetUnfolderBase]: For 21364/21364 co-relation queries the response was YES. [2024-06-14 13:03:38,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2836 conditions, 491 events. 237/491 cut-off events. For 21364/21364 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2268 event pairs, 81 based on Foata normal form. 12/502 useless extension candidates. Maximal degree in co-relation 2779. Up to 352 conditions per place. [2024-06-14 13:03:38,933 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 55 selfloop transitions, 24 changer transitions 7/88 dead transitions. [2024-06-14 13:03:38,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 88 transitions, 859 flow [2024-06-14 13:03:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 13:03:38,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 13:03:38,936 INFO L175 Difference]: Start difference. First operand has 113 places, 68 transitions, 601 flow. Second operand 8 states and 95 transitions. [2024-06-14 13:03:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 88 transitions, 859 flow [2024-06-14 13:03:38,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 88 transitions, 807 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:38,956 INFO L231 Difference]: Finished difference. Result has 115 places, 66 transitions, 608 flow [2024-06-14 13:03:38,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=608, PETRI_PLACES=115, PETRI_TRANSITIONS=66} [2024-06-14 13:03:38,957 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-14 13:03:38,957 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 66 transitions, 608 flow [2024-06-14 13:03:38,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:38,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:38,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:38,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:03:38,958 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:38,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1717021204, now seen corresponding path program 7 times [2024-06-14 13:03:38,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:38,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26186165] [2024-06-14 13:03:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:38,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:39,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:39,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26186165] [2024-06-14 13:03:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26186165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:39,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694843400] [2024-06-14 13:03:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:39,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:39,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:39,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:39,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 66 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:39,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:39,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:39,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:39,773 INFO L124 PetriNetUnfolderBase]: 211/445 cut-off events. [2024-06-14 13:03:39,774 INFO L125 PetriNetUnfolderBase]: For 18753/18753 co-relation queries the response was YES. [2024-06-14 13:03:39,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 445 events. 211/445 cut-off events. For 18753/18753 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2012 event pairs, 69 based on Foata normal form. 8/452 useless extension candidates. Maximal degree in co-relation 2534. Up to 252 conditions per place. [2024-06-14 13:03:39,776 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 56 selfloop transitions, 21 changer transitions 8/87 dead transitions. [2024-06-14 13:03:39,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 87 transitions, 924 flow [2024-06-14 13:03:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 13:03:39,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 13:03:39,777 INFO L175 Difference]: Start difference. First operand has 115 places, 66 transitions, 608 flow. Second operand 8 states and 96 transitions. [2024-06-14 13:03:39,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 87 transitions, 924 flow [2024-06-14 13:03:39,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 87 transitions, 841 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 13:03:39,796 INFO L231 Difference]: Finished difference. Result has 116 places, 62 transitions, 541 flow [2024-06-14 13:03:39,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=541, PETRI_PLACES=116, PETRI_TRANSITIONS=62} [2024-06-14 13:03:39,797 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-14 13:03:39,797 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 62 transitions, 541 flow [2024-06-14 13:03:39,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:39,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:39,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:39,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:03:39,798 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:39,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1644954504, now seen corresponding path program 7 times [2024-06-14 13:03:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:39,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85436771] [2024-06-14 13:03:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:40,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85436771] [2024-06-14 13:03:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85436771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:40,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646192059] [2024-06-14 13:03:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:40,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:40,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:40,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 62 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:40,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:40,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:40,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:40,647 INFO L124 PetriNetUnfolderBase]: 189/399 cut-off events. [2024-06-14 13:03:40,647 INFO L125 PetriNetUnfolderBase]: For 15381/15381 co-relation queries the response was YES. [2024-06-14 13:03:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 399 events. 189/399 cut-off events. For 15381/15381 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1726 event pairs, 70 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 2269. Up to 311 conditions per place. [2024-06-14 13:03:40,649 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-14 13:03:40,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 75 transitions, 749 flow [2024-06-14 13:03:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 13:03:40,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 13:03:40,654 INFO L175 Difference]: Start difference. First operand has 116 places, 62 transitions, 541 flow. Second operand 8 states and 84 transitions. [2024-06-14 13:03:40,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 75 transitions, 749 flow [2024-06-14 13:03:40,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 75 transitions, 690 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:03:40,675 INFO L231 Difference]: Finished difference. Result has 112 places, 63 transitions, 558 flow [2024-06-14 13:03:40,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=112, PETRI_TRANSITIONS=63} [2024-06-14 13:03:40,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-14 13:03:40,675 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 63 transitions, 558 flow [2024-06-14 13:03:40,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:40,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:40,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:03:40,676 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:40,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash -976260096, now seen corresponding path program 8 times [2024-06-14 13:03:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275767761] [2024-06-14 13:03:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275767761] [2024-06-14 13:03:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275767761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:41,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:41,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:41,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882093547] [2024-06-14 13:03:41,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:41,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:41,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:41,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:41,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 63 transitions, 558 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:41,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:41,555 INFO L124 PetriNetUnfolderBase]: 186/394 cut-off events. [2024-06-14 13:03:41,555 INFO L125 PetriNetUnfolderBase]: For 12807/12807 co-relation queries the response was YES. [2024-06-14 13:03:41,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 394 events. 186/394 cut-off events. For 12807/12807 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1706 event pairs, 69 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 2082. Up to 286 conditions per place. [2024-06-14 13:03:41,557 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 22 changer transitions 0/75 dead transitions. [2024-06-14 13:03:41,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 75 transitions, 734 flow [2024-06-14 13:03:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 13:03:41,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:03:41,558 INFO L175 Difference]: Start difference. First operand has 112 places, 63 transitions, 558 flow. Second operand 8 states and 85 transitions. [2024-06-14 13:03:41,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 75 transitions, 734 flow [2024-06-14 13:03:41,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 75 transitions, 668 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 13:03:41,575 INFO L231 Difference]: Finished difference. Result has 114 places, 63 transitions, 540 flow [2024-06-14 13:03:41,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=114, PETRI_TRANSITIONS=63} [2024-06-14 13:03:41,576 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-14 13:03:41,576 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 63 transitions, 540 flow [2024-06-14 13:03:41,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:41,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:41,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:03:41,577 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash 391719541, now seen corresponding path program 1 times [2024-06-14 13:03:41,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:41,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601490815] [2024-06-14 13:03:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:42,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601490815] [2024-06-14 13:03:42,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601490815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:42,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:42,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:42,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716655306] [2024-06-14 13:03:42,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:42,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:42,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:42,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:42,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 63 transitions, 540 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:42,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:42,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:42,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:42,599 INFO L124 PetriNetUnfolderBase]: 179/381 cut-off events. [2024-06-14 13:03:42,599 INFO L125 PetriNetUnfolderBase]: For 12285/12285 co-relation queries the response was YES. [2024-06-14 13:03:42,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 381 events. 179/381 cut-off events. For 12285/12285 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1635 event pairs, 52 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1850. Up to 234 conditions per place. [2024-06-14 13:03:42,601 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 23 changer transitions 16/81 dead transitions. [2024-06-14 13:03:42,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 81 transitions, 744 flow [2024-06-14 13:03:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 13:03:42,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-14 13:03:42,602 INFO L175 Difference]: Start difference. First operand has 114 places, 63 transitions, 540 flow. Second operand 9 states and 95 transitions. [2024-06-14 13:03:42,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 81 transitions, 744 flow [2024-06-14 13:03:42,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 81 transitions, 619 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:42,620 INFO L231 Difference]: Finished difference. Result has 113 places, 58 transitions, 429 flow [2024-06-14 13:03:42,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=429, PETRI_PLACES=113, PETRI_TRANSITIONS=58} [2024-06-14 13:03:42,620 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-14 13:03:42,620 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 58 transitions, 429 flow [2024-06-14 13:03:42,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:42,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:42,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:42,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:03:42,621 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:42,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -310125895, now seen corresponding path program 2 times [2024-06-14 13:03:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528691478] [2024-06-14 13:03:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:43,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:43,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528691478] [2024-06-14 13:03:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528691478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:43,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:43,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677502213] [2024-06-14 13:03:43,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:43,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:43,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:43,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:43,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:43,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 58 transitions, 429 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:43,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:43,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:43,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:43,815 INFO L124 PetriNetUnfolderBase]: 151/320 cut-off events. [2024-06-14 13:03:43,816 INFO L125 PetriNetUnfolderBase]: For 9504/9504 co-relation queries the response was YES. [2024-06-14 13:03:43,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 320 events. 151/320 cut-off events. For 9504/9504 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1297 event pairs, 39 based on Foata normal form. 6/325 useless extension candidates. Maximal degree in co-relation 1347. Up to 209 conditions per place. [2024-06-14 13:03:43,818 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 16 changer transitions 15/74 dead transitions. [2024-06-14 13:03:43,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 74 transitions, 615 flow [2024-06-14 13:03:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 13:03:43,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-14 13:03:43,819 INFO L175 Difference]: Start difference. First operand has 113 places, 58 transitions, 429 flow. Second operand 9 states and 95 transitions. [2024-06-14 13:03:43,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 74 transitions, 615 flow [2024-06-14 13:03:43,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 74 transitions, 557 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 13:03:43,828 INFO L231 Difference]: Finished difference. Result has 104 places, 51 transitions, 368 flow [2024-06-14 13:03:43,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=104, PETRI_TRANSITIONS=51} [2024-06-14 13:03:43,829 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-14 13:03:43,829 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 51 transitions, 368 flow [2024-06-14 13:03:43,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:43,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:43,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:43,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 13:03:43,830 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:43,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1451250795, now seen corresponding path program 3 times [2024-06-14 13:03:43,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449966146] [2024-06-14 13:03:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:44,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:44,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449966146] [2024-06-14 13:03:44,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449966146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:44,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:44,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:44,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075083569] [2024-06-14 13:03:44,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:44,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:44,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:44,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 51 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:44,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:44,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:44,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:44,911 INFO L124 PetriNetUnfolderBase]: 132/283 cut-off events. [2024-06-14 13:03:44,912 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2024-06-14 13:03:44,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 283 events. 132/283 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1092 event pairs, 37 based on Foata normal form. 6/288 useless extension candidates. Maximal degree in co-relation 1159. Up to 191 conditions per place. [2024-06-14 13:03:44,913 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 13 changer transitions 19/67 dead transitions. [2024-06-14 13:03:44,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 67 transitions, 538 flow [2024-06-14 13:03:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:03:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:03:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 13:03:44,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-14 13:03:44,914 INFO L175 Difference]: Start difference. First operand has 104 places, 51 transitions, 368 flow. Second operand 9 states and 93 transitions. [2024-06-14 13:03:44,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 67 transitions, 538 flow [2024-06-14 13:03:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 67 transitions, 494 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 13:03:44,920 INFO L231 Difference]: Finished difference. Result has 93 places, 45 transitions, 311 flow [2024-06-14 13:03:44,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=93, PETRI_TRANSITIONS=45} [2024-06-14 13:03:44,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-14 13:03:44,920 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 45 transitions, 311 flow [2024-06-14 13:03:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:44,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:44,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:44,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 13:03:44,921 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1214762921, now seen corresponding path program 4 times [2024-06-14 13:03:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:44,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158750291] [2024-06-14 13:03:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158750291] [2024-06-14 13:03:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158750291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:45,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233346715] [2024-06-14 13:03:45,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:45,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:45,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 45 transitions, 311 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:45,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:45,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:45,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:45,723 INFO L124 PetriNetUnfolderBase]: 100/214 cut-off events. [2024-06-14 13:03:45,723 INFO L125 PetriNetUnfolderBase]: For 3087/3087 co-relation queries the response was YES. [2024-06-14 13:03:45,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 214 events. 100/214 cut-off events. For 3087/3087 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 741 event pairs, 24 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 766. Up to 98 conditions per place. [2024-06-14 13:03:45,724 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 9 changer transitions 20/55 dead transitions. [2024-06-14 13:03:45,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 55 transitions, 441 flow [2024-06-14 13:03:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-14 13:03:45,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-14 13:03:45,734 INFO L175 Difference]: Start difference. First operand has 93 places, 45 transitions, 311 flow. Second operand 8 states and 78 transitions. [2024-06-14 13:03:45,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 55 transitions, 441 flow [2024-06-14 13:03:45,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 55 transitions, 386 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 13:03:45,738 INFO L231 Difference]: Finished difference. Result has 81 places, 33 transitions, 203 flow [2024-06-14 13:03:45,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=81, PETRI_TRANSITIONS=33} [2024-06-14 13:03:45,739 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-14 13:03:45,739 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 33 transitions, 203 flow [2024-06-14 13:03:45,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:45,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:45,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 13:03:45,739 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:45,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -576113499, now seen corresponding path program 5 times [2024-06-14 13:03:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:45,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764324641] [2024-06-14 13:03:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:46,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:46,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764324641] [2024-06-14 13:03:46,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764324641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:46,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:46,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:03:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32097839] [2024-06-14 13:03:46,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:03:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:03:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:03:46,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:46,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 33 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:46,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:46,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:46,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:46,889 INFO L124 PetriNetUnfolderBase]: 68/154 cut-off events. [2024-06-14 13:03:46,889 INFO L125 PetriNetUnfolderBase]: For 2715/2715 co-relation queries the response was YES. [2024-06-14 13:03:46,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 154 events. 68/154 cut-off events. For 2715/2715 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 460 event pairs, 20 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 544. Up to 60 conditions per place. [2024-06-14 13:03:46,890 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 17 selfloop transitions, 3 changer transitions 21/43 dead transitions. [2024-06-14 13:03:46,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 43 transitions, 307 flow [2024-06-14 13:03:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-14 13:03:46,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-14 13:03:46,891 INFO L175 Difference]: Start difference. First operand has 81 places, 33 transitions, 203 flow. Second operand 8 states and 76 transitions. [2024-06-14 13:03:46,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 43 transitions, 307 flow [2024-06-14 13:03:46,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 43 transitions, 273 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 13:03:46,893 INFO L231 Difference]: Finished difference. Result has 64 places, 21 transitions, 108 flow [2024-06-14 13:03:46,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=64, PETRI_TRANSITIONS=21} [2024-06-14 13:03:46,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-14 13:03:46,894 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 21 transitions, 108 flow [2024-06-14 13:03:46,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:46,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:03:46,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 13:03:46,894 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:03:46,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:03:46,895 INFO L85 PathProgramCache]: Analyzing trace with hash -929432411, now seen corresponding path program 6 times [2024-06-14 13:03:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:03:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711419846] [2024-06-14 13:03:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:03:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:03:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:03:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:03:47,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:03:47,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711419846] [2024-06-14 13:03:47,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711419846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:03:47,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:03:47,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:03:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996374006] [2024-06-14 13:03:47,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:03:47,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:03:47,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:03:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:03:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:03:47,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:03:47,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 21 transitions, 108 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:47,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:03:47,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:03:47,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:03:47,794 INFO L124 PetriNetUnfolderBase]: 25/65 cut-off events. [2024-06-14 13:03:47,794 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2024-06-14 13:03:47,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 65 events. 25/65 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 3 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 170. Up to 24 conditions per place. [2024-06-14 13:03:47,794 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-14 13:03:47,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 27 transitions, 142 flow [2024-06-14 13:03:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:03:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:03:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2024-06-14 13:03:47,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-06-14 13:03:47,795 INFO L175 Difference]: Start difference. First operand has 64 places, 21 transitions, 108 flow. Second operand 8 states and 66 transitions. [2024-06-14 13:03:47,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 27 transitions, 142 flow [2024-06-14 13:03:47,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 27 transitions, 110 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-14 13:03:47,796 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-14 13:03:47,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-14 13:03:47,796 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-14 13:03:47,796 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-14 13:03:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:03:47,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 13:03:47,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 13:03:47,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 13:03:47,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 13:03:47,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 13:03:47,800 INFO L445 BasicCegarLoop]: Path program histogram: [8, 7, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:03:47,802 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 13:03:47,802 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 13:03:47,805 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 13:03:47,805 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 13:03:47,806 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 01:03:47 BasicIcfg [2024-06-14 13:03:47,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 13:03:47,806 INFO L158 Benchmark]: Toolchain (without parser) took 52578.37ms. Allocated memory was 138.4MB in the beginning and 687.9MB in the end (delta: 549.5MB). Free memory was 61.0MB in the beginning and 636.8MB in the end (delta: -575.7MB). Peak memory consumption was 371.8MB. Max. memory is 16.1GB. [2024-06-14 13:03:47,807 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:03:47,807 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 138.4MB. Free memory was 66.4MB in the beginning and 66.2MB in the end (delta: 195.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:03:47,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.15ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 60.7MB in the beginning and 117.1MB in the end (delta: -56.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-06-14 13:03:47,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.77ms. Allocated memory is still 169.9MB. Free memory was 117.1MB in the beginning and 114.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:03:47,807 INFO L158 Benchmark]: Boogie Preprocessor took 75.41ms. Allocated memory is still 169.9MB. Free memory was 114.6MB in the beginning and 110.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 13:03:47,808 INFO L158 Benchmark]: RCFGBuilder took 576.89ms. Allocated memory is still 169.9MB. Free memory was 110.8MB in the beginning and 125.0MB in the end (delta: -14.2MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2024-06-14 13:03:47,808 INFO L158 Benchmark]: TraceAbstraction took 51260.34ms. Allocated memory was 169.9MB in the beginning and 687.9MB in the end (delta: 518.0MB). Free memory was 125.0MB in the beginning and 636.8MB in the end (delta: -511.8MB). Peak memory consumption was 402.3MB. Max. memory is 16.1GB. [2024-06-14 13:03:47,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 138.4MB. Free memory was 66.4MB in the beginning and 66.2MB in the end (delta: 195.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.15ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 60.7MB in the beginning and 117.1MB in the end (delta: -56.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.77ms. Allocated memory is still 169.9MB. Free memory was 117.1MB in the beginning and 114.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.41ms. Allocated memory is still 169.9MB. Free memory was 114.6MB in the beginning and 110.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 576.89ms. Allocated memory is still 169.9MB. Free memory was 110.8MB in the beginning and 125.0MB in the end (delta: -14.2MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * TraceAbstraction took 51260.34ms. Allocated memory was 169.9MB in the beginning and 687.9MB in the end (delta: 518.0MB). Free memory was 125.0MB in the beginning and 636.8MB in the end (delta: -511.8MB). Peak memory consumption was 402.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: 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, 47 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: 51.2s, OverallIterations: 57, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2969 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2551 mSDsluCounter, 1286 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1079 mSDsCounter, 591 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14972 IncrementalHoareTripleChecker+Invalid, 15563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 591 mSolverCounterUnsat, 207 mSDtfsCounter, 14972 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 514 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 509 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=949occurred in iteration=26, InterpolantAutomatonStates: 438, 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, 0.4s SatisfiabilityAnalysisTime, 35.1s InterpolantComputationTime, 874 NumberOfCodeBlocks, 874 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 817 ConstructedInterpolants, 0 QuantifiedInterpolants, 34154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 57 InterpolantComputations, 57 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 13:03:47,834 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